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MAX8553EEE+T

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MAX8553EEE+T

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Part Number MAX8553EEE+T
Manufacturer Maxim Integrated
Description IC CNTRLR BUCK PWM 16-QSOP
Datasheet MAX8553EEE+T Datasheet
Package 16-SSOP (0.154", 3.90mm Width)
In Stock 22,090 piece(s)
Unit Price $ 1.9584 *
Lead Time Can Ship Immediately
Estimated Delivery Time Jun 3 - Jun 8 (Choose Expedited Shipping)
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Part Number # MAX8553EEE+T (PMIC - Voltage Regulators - Special Purpose) is manufactured by Maxim Integrated and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

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MAX8553EEE+T Specifications

ManufacturerMaxim Integrated
CategoryIntegrated Circuits (ICs) - PMIC - Voltage Regulators - Special Purpose
Datasheet MAX8553EEE+TDatasheet
Package16-SSOP (0.154", 3.90mm Width)
SeriesQuick-PWM?
ApplicationsController, DDR
Voltage - Input4.5 V ~ 28 V
Number of Outputs1
Voltage - OutputAdjustable
Operating Temperature-40°C ~ 85°C
Mounting TypeSurface Mount
Package / Case16-SSOP (0.154", 3.90mm Width)
Supplier Device Package16-QSOP

MAX8553EEE+T Datasheet

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Page 2

General Description The MAX8553 is a 4.5V to 28V input-voltage, synchro- nous step-down controller that provides a complete power-management solution for DDR memory. The MAX8553 generates 1/2 VREFIN voltage for VTT and VTTR. The VTT and VTTR tracking voltages are main- tained within 1% of 1/2 VREFIN. The MAX8554 is a 4.5V to 28V input voltage, nontracking step-down controller with a low 0.6V feedback threshold voltage. The MAX8553/ MAX8554 use Maxim’s proprietary Quick-PWM™ archi- tecture for fast transient response and operate with selectable pseudo-fixed frequencies. Both controllers can operate without an external bias supply. The controllers operate in synchronous-rectification mode to ensure balanced current sourcing and sinking capabili- ty of up to 25A. The MAX8553/MAX8554 also provide up to 95% efficiency, making them ideal for server and point- of-load applications. Additionally, a low 5µA shutdown current allows for longer battery life in notebook applica- tions. Lossless current monitoring is achieved by monitor- ing the low-side MOSFET’s drain-to-source voltage. The MAX8553/MAX8554 have an adjustable foldback current limit to withstand a continuous output overload and short circuit. Digital soft-start provides control of inrush current during power-up. Overvoltage protection shuts the con- verter down and discharges the output capacitor. The MAX8553/MAX8554 come in space-saving 16-pin QSOP packages. Applications Wide-Input Power Supplies Servers and Storage Applications ASIC and CPU Core Voltages Notebook and LCD-PC Power Supplies DDR I and DDR II Memory Power Supplies AGTL Bus Termination Supplies Features ♦ Up to 25A Output-Current Capability ♦ Quick-PWM Control for Fast Loop Response ♦ Up to 95% Efficiency ♦ 4.5V to 28V Input Voltage Range ♦ No External Bias Supply Required ♦ 0 to 3.6V Input REFIN Range (MAX8553) ♦ Automatically Sets VTT and VTTR to within ±1% of 1/2 VREFIN- (MAX8553) ♦ Low 0.6V Feedback Threshold (MAX8554) ♦ 200kHz/300kHz/400kHz/550kHz Selectable Switching Frequencies ♦ Adjustable Foldback Current Limit ♦ Overvoltage Protection ♦ Digital Soft-Start M A X 8 5 5 3 /M A X 8 5 5 4 4.5V to 28V Input, Synchronous PWM Buck Controllers for DDR Termination and Point-of-Load Applications ________________________________________________________________ Maxim Integrated Products 1 Ordering Information MAX8553 DHEN/HSD +5V POK VIN VOUT VTTR V+ REFIN LX DL VTTRGND POK REFIN VL BST V+ REF ILIM FSEL PGND VTTPART TEMP RANGE PIN-PACKAGE MAX8553EEE -40°C to +85°C 16 QSOP MAX8554EEE -40°C to +85°C 16 QSOP Typical Operating Circuit 19-3017; Rev 1; 5/05 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Pin Configurations appear at end of data sheet. Quick-PWM is a trademark of Maxim Integrated Products, Inc.

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M A X 8 5 5 3 /M A X 8 5 5 4 4.5V to 28V Input, Synchronous PWM Buck Controllers for DDR Termination and Point-of-Load Applications 2 _______________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS (VV+ = VHSD = +12V, VEN/HSD = VREFIN = +2.5V, VEN = +5V, CVL = 4.7µF, CVTTR = 1µF, CREF = 0.22µF, VFSEL = 0V, ILIM = VL, PGND = LX = GND, BST = VL, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless otherwise specified.) Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. V+, EN/HSD, EN, HSD to GND...............................-0.3V to +30V PGND to GND .......................................................-0.3V to +0.3V VTT, REFIN, POK, OUT, FB, VL to GND...................-0.3V to +6V REF, VTTR, DL, ILIM, FSEL to GND ............-0.3V to (VVL + 0.3V) LX to PGND ...............................................................-2V to +30V BST to GND............................................................-0.3V to +36V DH to LX ...................................................................-0.3V to +6V LX to BST..................................................................-6V to +0.3V REF Short Circuit to GND...........................................Continuous Continuous Power Dissipation (TA = +70°C) 16-Pin QSOP (derated 8.3mW/°C above +70°C) ........667mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C PARAMETER CONDITIONS MIN TYP MAX UNITS V+ Input Voltage Range VL not connected to V+ 6 28 V V+ Input Voltage Range VL connected to V+ 4.5 5.5 V EN/HSD Input Voltage Range MAX8553 enabled 1.5 28.0 V EN Input Voltage Range MAX8554 enabled 1.5 28.0 V EN Input Current 2 3 µA HSD Input Voltage Range MAX8554 enabled 1.5 28.0 V HSD Input Current 20 40 µA REFIN Input Voltage Range 0 3.6 V V+ Supply Current (MAX8553) VVTT = +1.35V 0.8 1.2 mA V+ Supply Current (MAX8554) VFB = 630mV 0.62 0.90 mA REFIN Supply Current 125 250 µA EN/HSD Supply Current 5 10 µA VL Supply Current VVL = VV+ = 5.5V, VVTT = +1.35V 0.8 1.2 mA V+ Shutdown Supply Current EN/HSD = GND 3 5 µA REFIN Shutdown Supply Current EN/HSD = GND 1 µA VL Shutdown Supply Current VVL = VV+ = +5.5V, VEN/HSD = 0V 5 12 µA VL Undervoltage-Lockout Threshold Rising edge, typical hysteresis = 40mV 4.05 4.25 4.40 V VTT VTT Input Bias Current VVTT = +1.25V -0.15 0 µA VTT Feedback Voltage Range 0 1.8 V VREFIN = VEN/HSD = +1.8V 49.5 50 50.5 VTT Feedback Voltage Accuracy VREFIN = VEN/HSD = +3.6V 49.5 50 50.5 % VRE FIN FB Input Bias Current MAX8554, VFB = +600mV -0.15 0 µA

Page 4

M A X 8 5 5 3 /M A X 8 5 5 4 4.5V to 28V Input, Synchronous PWM Buck Controllers for DDR Termination and Point-of-Load Applications _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS (continued) (VV+ = VHSD = +12V, VEN/HSD = VREFIN = +2.5V, VEN = +5V, CVL = 4.7µF, CVTTR = 1µF, CREF = 0.22µF, VFSEL = 0V, ILIM = VL, PGND = LX = GND, BST = VL, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless otherwise specified.) PARAMETER CONDITIONS MIN TYP MAX UNITS FB Regulation Voltage MAX8554, VOUT = +2.5V, FSEL unconnected 0.598 0.607 0.616 V Output Adjust Range MAX8554 (Note 1) 0.6 3.5 V VTT Line Regulation VEN/HSD ±10%, VVTT = +1.25V, IOUT = 0A ±0.325 % FB Line Regulation MAX8554, VHSD ±10%, VOUT = +2.5V, IOUT = 0A, FSEL unconnected ±0.325 % VTT Load Regulation 0 < IOUT < +7A, VVTT = +1.25V 0.2 % FB Load Regulation MAX8554, 0 < IOUT < +7A, VOUT = +2.5V, FSEL unconnected 0.2 % REFERENCE Reference Output Voltage VV+ = VVL = +4.5 to +5.5V, IREF = 0 1.97 2.00 2.03 V Reference Load Regulation VV+ = VVL = +5V, IREF = 0 to 50µA 10 mV Reference UVLO VV+ = VVL = +5V, reference rising, hysteresis = 27mV 1.5 1.6 1.7 V VTTR VTTR Output Voltage Range 0 1.8 V IVTTR = -5mA to +5mA 49.5 50 50.5 IVTTR = -25mA to +25mA, VREFIN = +1.8V 49 50 51VTTR Output Accuracy IVTTR = -25mA to +25mA, VREFIN = +3.6V 49.5 50 50.5 % VRE FIN Thermal Shutdown Rising temperature, typical hysteresis = 15°C +160 °C SOFT-START ILIM Ramp Period Ramps the ILIM trip threshold from 20% to 100% in 20% increments 0.8 1.7 3.0 ms Output Predischarge Period Rising edge of EN/HSD to the start of internal digital soft-start 0.8 1.7 3.0 ms OSCILLATOR FSEL = VL 200 FSEL = unconnected 300 FSEL = REF 400 Oscillator Frequency FSEL = GND 550 kHz FSEL = VL 2.18 2.5 2.83 FSEL unconnected 1.45 1.67 1.89 FSEL = REF 1.09 1.25 1.41 On-Time MAX8553, VVTT = +1.25V (Note 2) FSEL = GND 0.82 0.91 1.00 µs FSEL = VL 0.89 1.02 1.16 FSEL unconnected 0.61 0.71 0.80 FSEL = REF 0.43 0.49 0.56 On-Time MAX8554, VOUT = +2.5V (Note 2) FSEL = GND 0.33 0.37 0.41 µs Off-Time (Note 2) 350 400 ns

Page 5

M A X 8 5 5 3 /M A X 8 5 5 4 4.5V to 28V Input, Synchronous PWM Buck Controllers for DDR Termination and Point-of-Load Applications 4 _______________________________________________________________________________________ ELECTRICAL CHARACTERISTICS (continued) (VV+ = VHSD = +12V, VEN/HSD = VREFIN = +2.5V, VEN = +5V, CVL = 4.7µF, CVTTR = 1µF, CREF = 0.22µF, VFSEL = 0V, ILIM = VL, PGND = LX = GND, BST = VL, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless otherwise specified.) PARAMETER CONDITIONS MIN TYP MAX UNITS CURRENT LIMIT LX to PGND, ILIM = VL 80 100 115 LX to PGND, RILIM = 100kΩ 35 50 65 Current-Limit Threshold (Positive Direction) LX to PGND, RILIM = 400kΩ 160 200 230 mV Current-Limit Threshold (Negative Direction) LX to PGND, ILIM = VL, with respect to positive current-limit threshold -130 -110 -90 % ILIM Input Current 5 µA FAULT DETECTION MAX8553 (VREFIN > +1V) 57 60 63 % VRE FIN MAX8553 (VREFIN ≤ +1V) 0.576 0.600 0.624Overvoltage Threshold MAX8554 0.696 0.720 0.744 V VL REGULATOR Output Voltage +6V < VV+ <+28V, 1mA < IVL < 35mA 4.80 5.0 5.33 V Line Regulation +6V < VV+ < +28V, IVL = 10mA 0.2 % RMS Output Current 35 mA Bypass Capacitor ESR < 100mΩ 2.2 µF DRIVER DH Gate-Driver On-Resistance VBST - VLX = +5V 1.4 2.5 Ω DL Gate-Driver On-Resistance (Source) DL high state 1.6 3.0 Ω DL Gate-Driver On-Resistance (Sink) DL low state 0.75 1.25 Ω DL rising 32 Dead Time DL falling 30 ns FSEL LOGIC Logic Input Current -3 +3 µA Logic Low (GND) 0.5 V Logic REF Level FSEL = REF 1.65 2.35 V Logic Float Level FSEL unconnected 3.15 3.85 V Logic VL Level FSEL = VL VVL - 0.4 V EN/HSD OR EN LOGIC EN/HSD or EN Shutdown Current Max IEN/HSD for VEN/HSD < +0.8V or VEN < +0.8V 0.5 3.0 µA Logic High VVL = VV+ = +4.5 to +5.5V, 100mV hysteresis 1.5 V Logic Low VVL = VV+ = +4.5 to +5.5V 0.8 V

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M A X 8 5 5 3 /M A X 8 5 5 4 4.5V to 28V Input, Synchronous PWM Buck Controllers for DDR Termination and Point-of-Load Applications _______________________________________________________________________________________ 5 ELECTRICAL CHARACTERISTICS (continued) (VV+ = VHSD = +12V, VEN/HSD = VREFIN = +2.5V, VEN = +5V, CVL = 4.7µF, CVTTR = 1µF, CREF = 0.22µF, VFSEL = 0V, ILIM = VL, PGND = LX = GND, BST = VL, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless otherwise specified.) PARAMETER CONDITIONS MIN TYP MAX UNITS POWER-OK OUTPUT Upper VTT and VTTR Threshold MAX8553 55 56 57 % VRE FIN Lower VTT and VTTR Threshold MAX8553 43 44 45 % VRE FIN Upper Threshold MAX8554 0.646 0.672 0.698 V Lower Threshold MAX8554 0.504 0.528 0.552 V POK Output Low Level ISINK = 2mA 0.4 V POK Output High Leakage VPOK = +5V 5 µA ELECTRICAL CHARACTERISTICS (VV+ = VHSD = +12V, VEN/HSD = VREFIN = +2.5V, VEN = +5V, CVL = 4.7µF, CVTTR = 1µF, CREF = 0.22µF, VFSEL = 0, ILIM = VL, PGND = LX = POK = GND, BST = VL, TA = -40°C to +85°C, unless otherwise specified.) (Note 3) PARAMETER CONDITIONS MIN MAX UNITS V+ Input Voltage Range VL not connected to V+ 6 28 V V+ Input Voltage Range VL connected to V+ 4.5 5.5 V EN/HSD Input Voltage Range MAX8553 enabled 1.5 28.0 V EN Input Voltage Range MAX8554 enabled 1.5 28.0 V EN Input Current 3 µA HSD Input Voltage Range MAX8554 enabled 1.5 28.0 V HSD Input Current 40 µA REFIN Input Voltage Range 0 3.6 V V+ Supply Current (MAX8553) VVTT = +1.35V 1.2 mA V+ Supply Current (MAX8554) VFB = 630mV 0.90 mA REFIN Supply Current 250 µA EN/HSD Supply Current 10 µA VL Supply Current VVL = VV+ = 5.5V, VVTT = +1.35V 1.2 mA V+ Shutdown Supply Current EN/HSD = GND 5 µA REFIN Shutdown Supply Current EN/HSD = GND 1 µA VL Shutdown Supply Current VVL = VV+ = +5.5V, VEN/HSD = 0V 12 µA VL Undervoltage-Lockout Threshold Rising edge, typical hysteresis = 40mV 4.05 4.40 V VTT VTT Input Bias Current VVTT = +1.25V -0.2 0 µA VTT Feedback Voltage Range 0 1.8 V VREFIN = VEN/HSD = +1.8V 49.5 50.5 VTT Feedback Voltage Accuracy VREFIN = VEN/HSD = +3.6V 49.5 50.5 % VRE FIN FB Input Bias Current MAX8554, VFB = +600mV -0.2 0 µA FB Regulation Voltage MAX8554, VOUT = +2.5V, FSEL unconnected 0.598 0.616 V Output Adjust Range MAX8554 (Note 1) 0.6 3.5 V

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M A X 8 5 5 3 /M A X 8 5 5 4 4.5V to 28V Input, Synchronous PWM Buck Controllers for DDR Termination and Point-of-Load Applications 6 _______________________________________________________________________________________ ELECTRICAL CHARACTERISTICS (continued) (VV+ = VHSD = +12V, VEN/HSD = VREFIN = +2.5V, VEN = +5V, CVL = 4.7µF, CVTTR = 1µF, CREF = 0.22µF, VFSEL = 0, ILIM = VL, PGND = LX = POK = GND, BST = VL, TA = -40°C to +85°C, unless otherwise specified.) (Note 3) PARAMETER CONDITIONS MIN MAX UNITS REFERENCE Reference Output Voltage VV+ = VVL = +4.5 to +5.5V, IREF = 0 1.97 2.03 V Reference Load Regulation VV+ = VVL = +5V, IREF = 0 to 50µA 10 mV Reference UVLO VV+ = VVL = +5V, reference rising, hysteresis = 27mV 1.5 1.7 V VTTR VTTR Output Voltage Range 0 1.8 V IVTTR = -5mA to +5mA 49.5 50.5 IVTTR = -25mA to +25mA, VREFIN = +1.8V 49 51VTTR Output Accuracy IVTTR = -25mA to +25mA, VREFIN = +3.6V 49.5 50.5 % VRE FIN SOFT-START ILIM Ramp Period Ramps the ILIM trip threshold from 20% to 100% in 20% increments 0.8 3.0 ms Output Predischarge Period Rising edge of EN/HSD to the start of internal digital soft-start 0.8 3.0 ms OSCILLATOR FSEL = VL 2.18 2.83 FSEL unconnected 1.45 1.89 FSEL = REF 1.09 1.41 On-Time MAX8553, VVTT = +1.25V (Note 2) FSEL = GND 0.82 1.00 µs FSEL = VL 0.89 1.16 FSEL unconnected 0.61 0.80 FSEL = REF 0.43 0.56 On-Time MAX8554, VOUT = +2.5V (Note 2) FSEL = GND 0.33 0.41 µs Off-Time (Note 2) 420 ns CURRENT LIMIT LX to PGND, ILIM = VL 80 115 LX to PGND, RILIM = 100kΩ 30 65 Current-Limit Threshold (Positive Direction) LX to PGND, RILIM = 400kΩ 150 230 mV Current-Limit Threshold (Negative Direction) LX to PGND, ILIM = VL, with respect to positive current-limit threshold -130 -90 % ILIM Input Current µA FAULT DETECTION MAX8553 (VREFIN > +1V) 57 63 % MAX8553 (VREFIN ≤ +1V) 0.576 0.624Overvoltage Threshold MAX8554 0.696 0.744 V VL REGULATOR Output Voltage +6V < VV+ < +28V, 1mA < IVL < 35mA 4.80 5.33 V RMS Output Current 35 mA Bypass Capacitor ESR < 100mΩ 2.2 µF

Page 8

M A X 8 5 5 3 /M A X 8 5 5 4 4.5V to 28V Input, Synchronous PWM Buck Controllers for DDR Termination and Point-of-Load Applications _______________________________________________________________________________________ 7 ELECTRICAL CHARACTERISTICS (continued) (VV+ = VHSD = +12V, VEN/HSD = VREFIN = +2.5V, VEN = +5V, CVL = 4.7µF, CVTTR = 1µF, CREF = 0.22µF, VFSEL = 0, ILIM = VL, PGND = LX = POK = GND, BST = VL, TA = -40°C to +85°C, unless otherwise specified.) (Note 3) PARAMETER CONDITIONS MIN MAX UNITS DRIVER DH Gate-Driver On-Resistance VBST - VLX = +5V 2.5 Ω DL Gate-Driver On-Resistance (Source) DL high state 3.0 Ω DL Gate-Driver On-Resistance (Sink) DL low state 1.25 Ω FSEL LOGIC Logic Input Current -3 +3 µA Logic Low (GND) 0.5 V Logic REF Level FSEL = REF 1.65 2.35 V Logic Float Level FSEL unconnected 3.15 3.85 V Logic VL Level FSEL = VL VVL - 0.4 V EN/HSD OR EN LOGIC EN/HSD or EN Shutdown Current Max IEN/HSD for VEN/HSD < +0.8V or VEN < +0.8V 0.5 3.0 µA Logic High VVL = VV+ = +4.5 to +5.5V, 100mV hysteresis 1.5 V Logic Low VVL = VV+ = +4.5 to +5.5V 0.8 V POWER-OK OUTPUT Upper VTT, and VTTR Threshold MAX8553 55 57 % VRE FIN Lower VTT, and VTTR Threshold MAX8553 43 45 % VRE FIN Upper Threshold MAX8554 0.646 0.698 V Lower Threshold MAX8554 0.504 0.552 V POK Output Low Level ISINK = 2mA 0.4 V POK Output High Leakage VPOK = +5V 5 µA Note 1: Consult factory for applications that require higher than 3.5V output. Note 2: On-time and off-time specifications are measured from 50% point to 50% point at the DH pin with LX forced to 0V, BST forced to 5V, and a 250pF capacitor connected from DH to LX. Actual in-circuit times may differ due to MOSFET switching speeds. Note 3: Specifications to -40°C are guaranteed by design and are not production tested.

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1.19 1.23 1.21 1.27 1.25 1.29 1.31 0 42 6 8 LOAD REGULATION (CIRCUIT OF FIGURE 2) M A X 8 5 5 3 /4 t o c0 9 LOAD CURRENT (A) O U TP U T V O LT A G E (V ) VTT CONNECTED AS SHOWN IN FIGURE 2 VTT CONNECTED TO THE OUTPUT M A X 8 5 5 3 /M A X 8 5 5 4 4.5V to 28V Input, Synchronous PWM Buck Controllers for DDR Termination and Point-of-Load Applications 8 _______________________________________________________________________________________ Typical Operating Characteristics (VV+ = 12V, VOUT = 1.8V, circuit of Figure 1, TA = +25°C, unless otherwise noted.) 100 30 0.1 1.0 10.0 EFFICIENCY vs. LOAD CURRENT (CIRCUIT OF FIGURE 2) 60 M A X 8 5 5 3 /4 t o c0 1 LOAD CURRENT (A) EF FI C IE N C Y ( % ) 70 40 50 80 90 VIN = 1.8V VOUT = 0.9V VIN = 2.5V VOUT = 1.25V 0.1 10.0 100.0 EFFICIENCY vs. LOAD CURRENT (CIRCUIT OF FIGURE 1) M A X 8 5 5 3 /4 t o c0 2 LOAD CURRENT (A) EF FI C IE N C Y ( % ) 1.0 100 30 40 50 60 70 90 80 VOUT = 1.8V VOUT = 2.5V 400 450 550 500 600 650 -8 -4 -2-6 0 2 4 6 8 SWITCHING FREQUENCY vs. OUTPUT CURRENT (CIRCUIT OF FIGURE 2) M A X 8 5 5 3 /4 t o c0 3 OUTPUT CURRENT (A) S W IT C H IN G F R EQ U EN C Y ( kH z) 200 240 220 280 260 300 320 6 8 10 12 14 16 18 20 22 24 26 28 SWITCHING FREQUENCY vs. INPUT VOLTAGE (CIRCUIT OF FIGURE 3) M A X 8 5 5 3 /4 t o c0 4 INPUT VOLTAGE (V) S W IT C H IN G F R EQ U EN C Y ( kH z) 160 180 170 200 190 210 220 -40 -15 10 35 60 85 FREQUENCY vs. TEMPERATURE M A X 8 5 5 3 /4 t o c0 5 TEMPERATURE (°C) FR EQ U EN C Y ( kH z) 0 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 4.5 5.0 4 8 12 16 20 24 28 MAX8554 SHUTDOWN SUPPLY CURRENT vs. INPUT VOLTAGE M A X 8 5 5 3 /4 t o c0 6 INPUT VOLTAGE (V) S H U TD O W N S U P P LY C U R R EN T (µ A ) V+ = HSD, EN = GND 0 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 4.5 5.0 4 8 12 16 20 24 28 MAX8553 SHUTDOWN SUPPLY CURRENT vs. INPUT VOLTAGE M A X 8 5 5 3 /4 t o c0 7 INPUT VOLTAGE (V) S H U TD O W N S U P P LY C U R R EN T (µ A ) EN = GND 1.74 1.78 1.76 1.82 1.80 1.84 1.86 0 4.0 8.0 12.0 16.0 20.0 LOAD REGULATION (CIRCUIT OF FIGURE 1) M A X 8 5 5 3 /4 t o c0 8 LOAD CURRENT (A) O U TP U T V O LT A G E (V )

Page 10

M A X 8 5 5 3 /M A X 8 5 5 4 4.5V to 28V Input, Synchronous PWM Buck Controllers for DDR Termination and Point-of-Load Applications _______________________________________________________________________________________ 9 Typical Operating Characteristics (continued) (VV+ = 12V, VOUT = 1.8V, circuit of Figure 1, TA = +25°C, unless otherwise noted.) LOAD TRANSIENT 0A TO 20A TO 0A (CIRCUIT OF FIGURE 1) MAX8553/4 toc10 40µs/div IOUT 10A/div 100mV/div AC-COUPLEDVOUT LOAD TRANSIENT -8A TO +8A TO -8A (CIRCUIT OF FIGURE 2) MAX8553/4 toc11 40µs/div VTT CONNECTED TO THE OUTPUT VOUT 0 5A/div 20mV/div AC-COUPLED IOUT LOAD TRANSIENT -8A TO +8A TO -8A (CIRCUIT OF FIGURE 2) MAX8553/4 toc12 40µs/div VTT CONNECTED AS SHOWN IN FIGURE 2 VOUT 0 5A/div 20mV/div AC-COUPLED IOUT SWITCHING WAVEFORMS WITH 20A LOAD (CIRCUIT OF FIGURE 1) MAX8553/4 toc13 2µs/div VLX IL 10A/div 0 5V/div 20mV/div AC-COUPLED VOUT

MAX8553EEE+T Reviews

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Gabr*****a Vora

May 23, 2020

Rec today in good order & condition . Thanks for speedy delivery.Regards.

Mus*****cott

May 17, 2020

The best choice, clear and easy to make an order. Gives me full control.

Ana *****mukh

May 16, 2020

Used this on starter solenoid and works as expected.

Auro*****ashyap

May 15, 2020

I've had no issues. Good product, would buy again.

Magno*****alton

May 14, 2020

Always have what I need, fast and easy for making an order, fast shipping and great service! That about covers it! Many Thanks!

Estr***** Sahni

April 26, 2020

Works just like the original one and even has the correct connectors installed.

Perl*****ickson

April 21, 2020

I was glad to find this product being sold at a great price. They were the perfect replacement.

Shau*****ntiago

April 15, 2020

Wow super fast delivery, product as described good company!

Valen*****haman

April 13, 2020

You guys and girls I can trust and rely on. Thank You All!

Elizab*****kenzie

April 11, 2020

Absolutely the finest source for electric components, connectors, terminal strips, panel lights, etc. The website online ordering system makes a easy business.

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We provide 90 days warranty.

If the items you received were not in perfect quality, we would be responsible for your refund or replacement, but the items must be returned in their original condition.

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RNC60H2583DSBSL RNC60H2583DSBSL Vishay Dale, RES 258K OHM 1/4W .5% AXIAL, Axial, Quick-PWM? View
KTR10EZPF2803 KTR10EZPF2803 Rohm Semiconductor, RES SMD 280K OHM 1% 1/8W 0805, 0805 (2012 Metric), Quick-PWM? View
2510R-94H 2510R-94H API Delevan Inc., FIXED IND 820UH 22MA 95 OHM SMD, 2-SMD, Quick-PWM? View
FW-08-03-G-D-245-100-A-TR FW-08-03-G-D-245-100-A-TR Samtec Inc., .050'' BOARD SPACERS, -, Quick-PWM? View
97-3100A22-14PX 97-3100A22-14PX Amphenol Industrial Operations, AB 19C 19#16 PIN RECP, -, Quick-PWM? View
VI-B3W-IY-B1 VI-B3W-IY-B1 Vicor Corporation, CONVERTER MOD DC/DC 5.5V 50W, Full Brick, Quick-PWM? View
VE-J1V-IY-S VE-J1V-IY-S Vicor Corporation, CONVERTER MINIMOD DC/DC 5.8V 50W, Half Brick, Quick-PWM? View
DG06D0512A DG06D0512A Delta Electronics, DCDC CONVERTER +/-12VOUT 6W, 24-DIP Module, 8 Leads, Quick-PWM? View
5SGSMD4H3F35C2L 5SGSMD4H3F35C2L Intel, IC FPGA 432 I/O 1152FBGA, 1152-BBGA, FCBGA, Quick-PWM? View
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MAX8553EEE+T

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