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MAX8640ZEXT18+T

hot MAX8640ZEXT18+T

MAX8640ZEXT18+T

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Part Number MAX8640ZEXT18+T
Manufacturer Maxim Integrated
Description IC REG BCK 1.8V 0.5A SYNC SC70-6
Datasheet MAX8640ZEXT18+T Datasheet
Package 6-TSSOP, SC-88, SOT-363
In Stock 1343 piece(s)
Unit Price $ 2.1542 *
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MAX8640ZEXT18+T Specifications

ManufacturerMaxim Integrated
CategoryIntegrated Circuits (ICs) - PMIC - Voltage Regulators - DC DC Switching Regulators
Datasheet MAX8640ZEXT18+T Datasheet
Package6-TSSOP, SC-88, SOT-363
Series-
FunctionStep-Down
Output ConfigurationPositive
TopologyBuck
Output TypeFixed
Number of Outputs1
Voltage - Input (Min)2.7V
Voltage - Input (Max)5.5V
Voltage - Output (Min/Fixed)1.8V
Current - Output500mA
Frequency - Switching4MHz
Synchronous RectifierYes
Operating Temperature-40°C ~ 85°C (TA)
Mounting TypeSurface Mount
Package / Case6-TSSOP, SC-88, SOT-363
Supplier Device PackageSC-70-6

MAX8640ZEXT18+T Datasheet

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19-3997; Rev 5; 8/14 MAX8640Y/MAX8640Z Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC Converters EVALUATION KIT AVAILABLE For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. General Description The MAX8640Y/MAX8640Z step-down converters are optimized for applications where small size, high effi- ciency, and low output ripple are priorities. They utilize a proprietary PWM control scheme that optimizes the switching frequency for high efficiency with small exter- nal components and maintains low output ripple volt- age at all loads. The MAX8640Z switches at up to 4MHz to allow a tiny 1µH inductor and 2.2µF output capacitor. The MAX8640Y switches at up to 2MHz for higher efficiency while still allowing small 2.2µH and 4.7µF components. Output current is guaranteed up to 500mA, while typical quiescent current is 28µA. Factory-preset output voltages from 0.8V to 2.5V elimi- nate external feedback components. Internal synchronous rectification greatly improves effi- ciency and replaces the external Schottky diode required in conventional step-down converters. Internal fast soft-start eliminates inrush current so as to reduce input capacitor requirements. The MAX8640Y/MAX8640Z are available in the tiny 6- pin, SC70 (2.0mm x 2.1mm) and µDFN (1.5mm x 1.0mm) packages. Both packages are lead-free. Applications Microprocessor/DSP Core Power I/O Power Cell Phones, PDAs, DSCs, MP3s Other Handhelds Where Space Is Limited Features  Tiny SC70 and µDFN Packages  500mA Guaranteed Output Current  4MHz or 2MHz PWM Switching Frequency  Tiny External Components: 1µH/2.2µF or 2.2µH/4.7µF  28µA Quiescent Current  Factory Preset Outputs from 0.8V to 2.5V  ±1% Initial Accuracy  Low Output Ripple at All Loads  Ultrasonic Skip Mode Down to 1mA Loads  Ultra-Fast Line- and Load-Transient Response  Fast Soft-Start Eliminates Inrush Current Ordering Information PART* PIN- PACKAGE TOP MARK MAX8640YEXT08+T 6 SC70 ACQ MAX8640YEXT10+T 6 SC70 ADF MAX8640YEXT11+T 6 SC70 ACR MAX8640YEXT12+T 6 SC70 ACS MAX8640YEXT13+T 6 SC70 ACG MAX8640YEXT15+T 6 SC70 ADD MAX8640YEXT16+T 6 SC70 ADB MAX8640YEXT18+T 6 SC70 ACI MAX8640YEXT19+T 6 SC70 ACH MAX8640YEXT82+T 6 SC70 ADJ GND OUT 1 ++ 6 IN 5 GND LX GND OUT LX MAX8640Y MAX8640Z MAX8640Y MAX8640Z SC70 2.0mm x 2.1mm TOP VIEW 2 3 6 5 44 1 2 3 SHDN IN GND SHDN µDFN 1.5mm x 1.0mm Pin Configurations L1 1µH OR 2.2µH C2 2.2µF OR 4.7µF C1 2.2µF OUT LX GND IN SHDNON/OFF MAX8640Y MAX8640Z INPUT 2.7V TO 5.5V OUTPUT 0.8V TO 2.5V UP TO 500mA Typical Operating Circuit Ordering Information continued and Selector Guide appears at end of data sheet. *Contact factory for availability of each version. For 2.85V output (82 version), request application note that includes limitations and typical operating characteristics. +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. Note: All devices are specified over the -40°C to +85°C operating temperature range.

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MAX8640Y/MAX8640Z Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC Converters 2 Maxim Integrated ABSOLUTE MAXIMUM RATINGS 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. IN to GND.................................................................-0.3V to +6V OUT, SHDN to GND ....................................-0.3V to (VIN + 0.3V) LX Current (Note 1) ........................................................0.8ARMS OUTPUT Short Circuit to GND ...................................Continuous Continuous Power Dissipation (TA = +70°C) 6-Pin SC70 (derate 3.1mW/°C above +70°C)..............245mW 6-Pin µDFN (derate 2.1mW/°C above +70°C) ..............167.7mW 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 ELECTRICAL CHARACTERISTICS (VIN = 3.6V, SHDN = IN, TA = -40°C to +85°C, typical values are at TA = +25°C, unless otherwise noted.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Range VIN 2.7 5.5 V UVLO Threshold UVLO VIN rising, 100mV hysteresis 2.44 2.6 2.70 V No load, no switching 28 48 TA = +25°C 0.01 0.1Supply Current ICC SHDN = GND TA = +85°C 0.1 µA Output Voltage Range VOUT Factory preset 0.8 2.5 V ILOAD = 0mA, TA = +25°C -1 0 +1Output Voltage Accuracy (Falling Edge) ILOAD = 0mA, TA = -40°C to +85°C -2 +2 % Output Load Regulation (Voltage Positioning) Equal to inductor DC resistance RL V/A VIH VIN = 2.7V to 5.5V 1.4 SHDN Logic Input Level VIL VIN = 2.7V to 5.5V 0.4 V TA = +25°C 0.001 1 SHDN Input Bias Current IIH,IL VIN = 5.5V, SHDN = GND or IN TA = +85°C 0.01 µA Minimum Required SHDN Reset Time tSHDN 10 µs Peak Current Limit ILIMP pFET switch 590 770 1400 mA Valley Current Limit ILIMN nFET rectifier 450 650 1300 mA Rectifier Off-Current Threshold ILXOFF nFET rectifier 10 40 70 mA RONP pFET switch, ILX = -40mA 0.6 1.2 On-Resistance RONN nFET rectifier, ILX = 40mA 0.35 0.7 Ω TA = +25°C 0.1 1 LX Leakage Current ILXLKG VIN = 5.5V, LX = GND to IN, SHDN = GND TA = +85°C 1 µA tON(MIN) 95 Minimum On and Off Times tOFF(MIN) 95 ns Thermal Shutdown +160 °C Thermal-Shutdown Hysteresis 20 °C Note 1: LX has internal clamp diodes to IN and GND. Applications that forward bias these diodes should not exceed the IC’s package power-dissipation limit. Note 2: All devices are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design.

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MAX8640Y/MAX8640Z Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC Converters 3Maxim Integrated Typical Operating Characteristics (VIN = 3.6V, VOUT = 1.5V, MAX8640Z, L = Murata LQH32CN series, TA = +25°C, unless otherwise noted.) EFFICIENCY vs. LOAD CURRENT 1.8V OUTPUT LOAD CURRENT (mA) EF FI C IE N C Y ( % ) M A X 8 6 4 0 Y /Z t o c0 1 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 MAX8640YEXT18 5 15 10 25 20 30 35 2.7 3.9 4.33.1 3.5 4.7 5.1 5.5 NO-LOAD SUPPLY CURRENT vs. SUPPLY VOLTAGE M A X 8 6 4 0 Y /Z t o c0 2 SUPPLY VOLTAGE (V) S U P P LY C U R R EN T (μ A ) MAX8640YEXT18 MAX8640ZEXT15 SWITCHING FREQUENCY vs. LOAD CURRENT LOAD CURRENT (mA) S W IT C H IN G F R EQ U EN C Y ( M H z) M A X 8 6 4 0 Y /Z t o c0 3 0 100 200 300 400 500 0.1 1 10 MAX8640ZEXT15 MAX8640YEXT18 OUTPUT VOLTAGE vs. LOAD CURRENT (VOLTAGE POSITIONING) LOAD CURRENT (mA) O U TP U T V O LT A G E (V ) M A X 8 6 4 0 Y /Z t o c0 4 0 100 200 300 400 500 1.30 1.35 1.40 1.45 1.50 1.55 MAX8640ZEXT15 ILX VLX VOUT 200mA/div 2V/div 20mV/div (AC-COUPLED) 10μs/div LIGHT-LOAD SWITCHING WAVEFORMS (IOUT = 1mA) MAX8640Y/Z toc05 ILX VLX VOUT 200mA/div 2V/div 0V 0mA 20mV/div (AC-COUPLED) 200ns/div MEDIUM-LOAD SWITCHING WAVEFORMS (IOUT = 40mA) MAX8640Y/Z toc06 ILX VLX VOUT 200mA/div 2V/div 0V 0mA 20mV/div (AC-COUPLED) 200ns/div HEAVY-LOAD SWITCHING WAVEFORMS (IOUT = 300mA) MAX8640Y/Z toc07

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MAX8640Y/MAX8640Z Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC Converters 4 Maxim Integrated Typical Operating Characteristics (continued) (VIN = 3.6V, VOUT = 1.5V, MAX8640Z, L = Murata LQH32CN series, TA = +25°C, unless otherwise noted.) ILX IIN VSHDN VOUT 100mA/div 500mA/div 1V/div 0V 0mA 0mA 5V/div 20μs/div LIGHT-LOAD STARTUP WAVEFORM (100Ω LOAD) MAX8640Y/Z toc08 ILX IIN VSHDN VOUT 100mA/div 500mA/div 1V/div 0V 0mA 0mA 5V/div 20μs/div HEAVY-LOAD STARTUP WAVEFORM (5Ω LOAD) MAX8640Y/Z toc09 ILX VOUT VIN 20mV/div AC-COUPLED 200mA/div 0mA 1V/div 4V 20μs/div LINE-TRANSIENT RESPONSE (4V TO 3.5V TO 4V) MAX8640Y/Z toc10 IOUT VOUT ILX 500mA/div 50m/div AC-COUPLED 200mA/div 0mA 40μs/div LOAD-TRANSIENT RESPONSE (5mA TO 250mA TO 5mA) MAX8640Y/Z toc11 IOUT VOUT ILX 500mA/div 100mV/div AC-COUPLED 200mA/div 0V 40μs/div LOAD-TRANSIENT RESPONSE (10mA TO 500mA TO 10mA) MAX8640Y/Z toc12

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PIN NAME FUNCTION 1 LX Inductor Connection to the Internal Drains of the p-channel and n-channel MOSFETs. High impedance during shutdown. 2, 5 GND Ground. Connect these pins together directly under the IC. 3 OUT Output Sense Input. Bypass with a ceramic capacitor as close as possible to pin 3 (OUT) and pin 2 (GND). OUT is internally connected to the internal feedback network. 4 SHDN Acti ve- Low S hutd ow n Inp ut. A l og i c- l ow on S HD N d i sab l es the step - d ow n D C - D C and r esets the l og i c. A l og i c- hi g h on S HD N enab l es the step - d ow n D C - D C . E nsur e that S HD N i s l ow for ≥ 10µs ( tS H D N ) after V I N r i ses ab ove i ts und er vol tag e l ockout thr eshol d ( U V LO ) to r eset the l og i c. S ee the S hutd ow n M od e secti on for m or e i nfor m ati on. 6 IN Supply Voltage Input. Input voltage range is 2.7V to 5.5V. Bypass with a ceramic capacitor as close as possible to pin 6 (IN) and pin 5 (GND). Pin Description MAX8640Y/MAX8640Z Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC Converters 5Maxim Integrated Detailed Description The MAX8640Y/MAX8640Z step-down converters deliv- er over 500mA to outputs from 0.8V to 2.5V. They utilize a proprietary hysteretic PWM control scheme that switches at up to 4MHz (MAX8640Z) or 2MHz (MAX8640Y), allowing some trade-off between efficien- cy and size of external components. At loads below 100mA, the MAX8640Y/MAX8640Z automatically switch to pulse-skipping mode to minimize the typical quies- cent current (28µA). Output ripple remains low at all loads, while the skip-mode switching frequency remains ultrasonic down to 1mA (typ) loads. Figure 1 is the simplified functional diagram. Control Scheme A proprietary hysteretic PWM control scheme ensures high efficiency, fast switching, fast transient response, low output ripple, and physically tiny external compo- nents. This control scheme is simple: when the output voltage is below the regulation threshold, the error comparator begins a switching cycle by turning on the high-side switch. This switch remains on until the mini- mum on-time expires and the output voltage is above the regulation threshold or the inductor current is above the current-limit threshold. Once off, the high-side switch remains off until the minimum off-time expires and the output voltage falls again below the regulation threshold. During the off period, the low-side synchro- nous rectifier turns on and remains on until either the high-side switch turns on again or the inductor current approaches zero. The internal synchronous rectifier eliminates the need for an external Schottky diode. Voltage-Positioning Load Regulation The MAX8640Y/MAX8640Z utilize a unique feedback network. By taking DC feedback from the LX node, the usual phase lag due to the output capacitor is removed, making the loop exceedingly stable and allowing the use of very small ceramic output capacitors. This configuration yields load regulation equal to the inductor’s series resistance multiplied by the load current. This voltage-positioning load regulation greatly reduces overshoot during load transients, effectively halving the peak-to-peak output-voltage excursions compared to tra- ditional step-down converters. See the Load-Transient Response in the Typical Operating Characteristics. Shutdown Mode A logic-low on SHDN places the MAX8640Y/MAX8640Z in shutdown mode by disabling the step-down DC-DC and resetting its logic. In shutdown mode, the supply current (ICC) is reduced to 0.01µA typical. Additionally, the power MOSFETs between IN, LX, and GND (Figure 1) are open such that LX is high impedance. Ensure that SHDN is low for ≥ 10µs (tSHDN) after VIN rises above its undervoltage lockout threshold (UVLO) to reset the logic. In the majority of systems, this tSHDN requirement is fulfilled naturally because the upstream logic controlling SHDN is powered off of the same VIN as the MAX8640Y/MAX8640Z. However, systems that want an always on regulator without the burden of enable/disable logic can use an R and C circuit on SHDN as shown in Figure 2.

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MAX8640Y/MAX8640Z Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC Converters 6 Maxim Integrated Soft-Start The MAX8640Y/MAX8640Z include internal soft-start circuitry that eliminates inrush current at startup, reduc- ing transients on the input source. Soft-start is particu- larly useful for higher impedance input sources, such as Li+ and alkaline cells. See the Soft-Start Response in the Typical Operating Characteristics. Applications Information The MAX8640Y/MAX8640Z are optimized for use with a tiny inductor and small ceramic capacitors. The correct selection of external components ensures high efficien- cy, low output ripple, and fast transient response. Inductor Selection A 1µH inductor is recommended for use with the MAX8640Z, and 2.2µH is recommended for the MAX8640Y. A 1µH inductor is physically smaller but requires faster switching, resulting in some efficiency loss. Table 1 lists several recommended inductors. It is acceptable to use a 1.5µH inductor with either the MAX8640Y or MAX8640Z, but efficiency and ripple should be verified. Similarly, it is acceptable to use a 3.3µH inductor with the MAX8640Y, but performance should be verified. For optimum voltage positioning of load transients, choose an inductor with DC series resistance in the 75mΩ to 150mΩ range. For higher efficiency at heavy loads (above 200mA) or minimal load regulation (but some transient overshoot), the resistance should be kept as low as possible. For light-load applications up to 200mA, higher resistance is acceptable with very lit- tle impact on performance. Capacitor Selection Output Capacitor The output capacitor, C2, is required to keep the output voltage ripple small and to ensure regulation loop sta- bility. C2 must have low impedance at the switching fre- quency. Ceramic capacitors are recommended due to their small size and low ESR. Make sure the capacitor maintains its capacitance over temperature and DC bias. Capacitors with X5R or X7R temperature charac- teristics typically perform well. The output capacitance can be very low; see the Selector Guide for recom- mended capacitance values. For optimum load-tran- sient performance and very low output ripple, the output capacitor value in µF should be equal to or larger than the inductor value in µH. MAX8640 SHDN GND 100kΩ IN ESD DIODE VIN 4.7nF Figure 2. Using an R and C circuit to create an always on regu- lator PWM LOGIC MAX8640Y MAX8640Z GND LX IN SHDN 0.6V OUT Figure 1. Simplified Functional Diagram

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MAX8640Y/MAX8640Z Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC Converters 7Maxim Integrated Table 1. Suggested Inductors MANUFACTURER SERIES INDUCTANCE (µH) DC RESISTANCE (Ω typ) CURRENT RATING (mA) DIMENSIONS L x W x H (mm) MIPFT2520D 2.0 0.16 900 2.5 x 2.0 x 0.5 1.5 0.07 1500 2.2 0.08 1300 FDK MIPF2520D 3.3 0.10 1200 2.5 x 2.0 x 1.0 1.0 0.12 1200 1.5 0.16 1000Murata LQM31P 2.2 0.22 900 3.2 x 1.6 x 0.95 1.2 0.08 590 1.5 0.09 520Sumida CDRH2D09 2.2 0.12 440 3.0 x 3.0 x 1.0 1.0 0.11 1100 1.5 0.13 1000Taiyo Yuden CKP3216T 2.2 0.14 900 3.2 x 1.6 x 0.9 1.0 0.15 460 GLF201208T 2.2 0.36 300 2.0 x 1.25 x 0.9 1.0 0.07 400 GLF2012T 2.2 0.10 300 2.0 x 1.25 x 1.35 1.0 0.10 800 TDK GLF251812T 2.2 0.20 600 2.5 x 1.8 x 1.35 1.0 0.05 1000 MDT2520-CR 2.2 0.08 700 2.5 x 2.0 x 1.0 1.0 0.07 1100 TOKO D2812C 2.2 0.14 770 2.8 x 2.8 x 1.2 Input Capacitor The input capacitor, C1, reduces the current peaks drawn from the battery or input power source and reduces switching noise in the IC. The impedance of C1 at the switching frequency should be kept very low. Ceramic capacitors are recommended due to their small size and low ESR. Make sure the capacitor main- tains its capacitance over temperature and DC bias. Capacitors with X5R or X7R temperature characteristics typically perform well. Due to the MAX8640Y/ MAX8640Z soft-start, the input capacitance can be very low. For optimum noise immunity and low input ripple, choose a capacitor value in µF that is equal to or larger than the inductor’s value in µH. PCB Layout and Routing High switching frequencies and large peak currents make PCB layout a very important part of design. Good design minimizes excessive EMI on the feedback paths and voltage gradients in the ground plane, both of which can result in instability or regulation errors. Connect the inductor, input capacitor, and output capacitor as close together as possible, and keep their traces short, direct, and wide. Connect the two GND pins under the IC and directly to the grounds of the input and output capacitors. Keep noisy traces, such as the LX node, as short as possible. Refer to the MAX8640Z evaluation kit for an example PCB layout and routing scheme.

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MAX8640Y/MAX8640Z Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC Converters 8 Maxim Integrated Selector Guide RECOMMENDED COMPONENTS PART OUTPUT VOLTAGE (V) FREQUENCY (MHz) L1 (µH) C2 (µF) TOP MARK MAX8640YEXT08 0.8 1.2 2.2 10 ACQ MAX8640YEXT10 1.0 1.6 2.2 4.7 ADF MAX8640YEXT11 1.1 1.7 2.2 4.7 ACR MAX8640YEXT12 1.2 1.8 2.2 4.7 ACS MAX8640YEXT13 1.3 1.9 2.2 4.7 ACG MAX8640YEXT15 1.5 2.0 2.2 4.7 ADD MAX8640YEXT16 1.6 2.0 2.2 4.7 ADB MAX8640YEXT18 1.8 2.0 2.2 4.7 ACI MAX8640YEXT19 1.9 2.0 2.2 4.7 ACH MAX8640YEXT24 2.4 2.0 2.2 4.7 ADM MAX8640YEXT25 2.5 1.7 2.2 4.7 ACJ MAX8640YEXT82 2.85 1.5 2.2 4.7 ADJ MAX8640YELT08 0.8 1.2 2.2 10 NB MAX8640YELT11 1.1 1.7 2.2 4.7 NC MAX8640YELT12 1.2 1.8 2.2 4.7 ND MAX8640YELT13 1.3 1.9 2.2 4.7 NE MAX8640YELT15 1.5 2.0 2.2 4.7 NF MAX8640YELT16 1.6 2.0 2.2 4.7 NG MAX8640YELT18 1.8 2.0 2.2 4.7 NH MAX8640YELT19 1.9 2.0 2.2 4.7 NI MAX8640YELT25 2.5 1.7 2.2 4.7 NJ MAX8640YELT82 2.85 1.5 2.2 4.7 OW MAX8640ZEXT08 0.8 2.4 1 4.7 ACL MAX8640ZEXT11 1.1 3.4 1 2.2 ACM MAX8640ZEXT12 1.2 3.6 1 2.2 ACN MAX8640ZEXT13 1.3 3.7 1 2.2 ACO MAX8640ZEXT15 1.5 3.9 1 2.2 ACP MAX8640ZEXT18 1.8 4.0 1 2.2 ACU MAX8640ZELT08 0.8 2.4 1 4.7 NK MAX8640ZELT11 1.1 3.4 1 2.2 NL

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MAX8640Y/MAX8640Z Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC Converters 9Maxim Integrated Ordering Information (continued) PART* PIN- PACKAGE TOP MARK MAX8640YEXT24+T 6 SC70 ADM MAX8640YEXT25+T 6 SC70 ACJ MAX8640YELT08+T 6 µDFN NB MAX8640YELT11+T 6 µDFN NC MAX8640YELT12+T 6 µDFN ND MAX8640YELT13+T 6 µDFN NE MAX8640YELT15+T 6 µDFN NF MAX8640YELT16+T 6 µDFN NG MAX8640YELT18+T 6 µDFN NH MAX8640YELT19+T 6 µDFN NI MAX8640YELT25+T 6 µDFN NJ MAX8640YELT82+T 6 µDFN OW PART* PIN- PACKAGE TOP MARK MAX8640ZEXT08+T 6 SC70 ACL MAX8640ZEXT11+T 6 SC70 ACM MAX8640ZEXT12+T 6 SC70 ACN MAX8640ZEXT13+T 6 SC70 ACO MAX8640ZEXT15+T 6 SC70 ACP MAX8640ZEXT18+T 6 SC70 ACU MAX8640ZELT08+T 6 µDFN NK MAX8640ZELT11+T 6 µDFN NL MAX8640ZELT12+T 6 µDFN NM MAX8640ZELT13+T 6 µDFN NN MAX8640ZELT15+T 6 µDFN NO MAX8640ZELT18+T 6 µDFN NP Chip Information PROCESS: BiCMOS Selector Guide (continued) RECOMMENDED COMPONENTS PART OUTPUT VOLTAGE (V) FREQUENCY (MHz) L1 (µH) C2 (µF) TOP MARK MAX8640ZELT12 1.2 3.6 1 2.2 NM MAX8640ZELT13 1.3 3.7 1 2.2 NN MAX8640ZELT15 1.5 3.9 1 2.2 NO MAX8640ZELT18 1.8 4.0 1 2.2 NP *Contact factory for availability of each version. For 2.85V output (82 version), request application note that includes limitations and typical operating characteristics. +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. Note: All devices are specified over the -40°C to +85°C operating temperature range.

MAX8640ZEXT18+T Reviews

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July 30, 2019

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Jas***** Kemp

February 12, 2019

Every time I order, I get it correctly filled and faster than most of website. For a friendly use operate system, you guys are the best!

MAX8640ZEXT18+T Guarantees

Service Guarantee

Service Guarantees

We guarantee 100% customer satisfaction.

Our experienced sales team and tech support team back our services to satisfy all our customers.

Quality Guarantee

Quality Guarantees

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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