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AAT3242ITP-WN-T1

hot AAT3242ITP-WN-T1

AAT3242ITP-WN-T1

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Part Number AAT3242ITP-WN-T1
Manufacturer Skyworks Solutions Inc.
Description IC REG LIN 3.3V/2.5V 12TSOPJW
Datasheet AAT3242ITP-WN-T1 Datasheet
Package 12-TFSOJ (0.094", 2.40mm Width)
In Stock 71344 piece(s)
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AAT3242ITP-WN-T1 Specifications

ManufacturerSkyworks Solutions Inc.
CategoryIntegrated Circuits (ICs) - PMIC - Voltage Regulators - Linear
Datasheet AAT3242ITP-WN-T1 Datasheet
Package12-TFSOJ (0.094", 2.40mm Width)
Series-
Number of Regulators2
Current - Output300mA, 150mA
Operating Temperature-40°C ~ 85°C
Mounting TypeSurface Mount
Package / Case12-TFSOJ (0.094", 2.40mm Width)
Supplier Device Package12-TSOPJW

AAT3242ITP-WN-T1 Datasheet

Page 1

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AAT3242 DATA SHEET 300mA/150mA Dual CMOS LDO Linear Regulator 1 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202259A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 10, 2012 General Description The AAT3242 is a dual low dropout linear regulator with Power OK (POK) outputs. Two integrated regulators pro- vide a high power 300mA output and a lower power 150mA output, making this device ideal for use with microprocessors and DSP cores in portable products. Two POK pins provide open drain output signals when their respective regulator output is within regulation. The AAT3242 has independent input voltage and enable pins for increased design flexibility. This device features a very low quiescent current (140µA typical) and low dropout voltages (typically 200mV and 400mV at the full output current level), making it ideal for portable appli- cations where extended battery life is critical. The AAT3242 has complete over-current/short-circuit and over-temperature protection circuits to guard against extreme operating conditions. The AAT3242 is available in the space-saving, Pb-free, 12-pin TSOPJW and TDFN33 packages. This device is capable of operation over the -40°C to +85°C tempera- ture range. Features • High/Low Current Outputs, 300mA/150mA • Low Dropout: ▪ LDO A: 400mV at 300mA ▪ LDO B: 200mV at 150mA • High Output Voltage Accuracy: ±1.5% • High PSRR: 65dB at 1kHz • 70µA Quiescent Current for Each LDO • Over-Current/Short-Circuit Protection • Over-Temperature Protection • Two POK Outputs • Independent Power and Enable Inputs • Uses Low Equivalent Series Resistance (ESR) Ceramic Capacitors • 12-Pin TSOPJW and TDFN33 Packages • -40°C to +85°C Temperature Range Applications • Cellular Phones • Digital Cameras • Handheld Instruments • Microprocessor / DSP Core / I/O Power • Notebook Computers • PDAs and Handheld Computers • Portable Communication Devices Typical Application AAT3242 2.2µF 100kΩ 2.2µF Enable B Enable A VIN OUTPUT A OUTPUT B POKA 100kΩ POKB POKA OUTA OUTB POKB GNDENB INB INA ENA

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AAT3242 DATA SHEET 300mA/150mA Dual CMOS LDO Linear Regulator 2 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202259A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 10, 2012 Pin Descriptions Pin # Symbol FunctionTSOPJW-12 TDFN33-12 1 12 ENA Enable Regulator A pin; this pin should not be left floating. When pulled low, the PMOS pass transistor turns off and the device enters shutdown mode, consuming less than 1µA. 2, 3, 8, 9 4, 10 GND Ground connection pins. For the TDFN33 package, The exposed thermal pad (EP) should be connected to the board ground plane and Pins 4 and 10. The ground plane should include a large exposed copper pad under the package with vias to the bottom layer ground plane for thermal dissipation (see package outline). 4 11 POKA Power OK pin with open drain output. It is pulled low when the OUTA pin is below the 10% regulation window. 5 9 OUTB Low current (150mA) regulator output pin; should be decoupled with a 2.2µF or greater output low-ESR ceramic capacitor. 6 7 INB Input voltage pin for Regulator B; should be decoupled with 1µF or greater capacitor. 7 6 ENB Enable Regulator B; this pin should not be left floating. When pulled low, the PMOS pass transistor turns off and the device enters shutdown mode, consuming less than 1µA. 10 5 POKB Power OK pin with open drain output. It is pulled low when the OUTB pin is below the 10% regulation window. 11 3 OUTA High-current (300mA) regulator output pin; should be decoupled with a 2.2µF or greater output low-ESR ceramic capacitor. 12 1 INA Input voltage pin for Regulator A; should be decoupled with 1µF or greater capacitor. n/a 2, 8 N/C Not connected. Pin Configuration TSOPJW-12 TDFN33-12 (Top View) (Top View) 1 2 3 4 5 6 12 11 10 9 8 7 ENA GND GND POKA OUTB INB INA OUTA POKB GND GND ENB INA N/C OUTA 1 GND POKB ENB ENA POKA GND OUTB N/C INB EP 2 3 4 5 6 12 11 10 9 8 7

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AAT3242 DATA SHEET 300mA/150mA Dual CMOS LDO Linear Regulator 3 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202259A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 10, 2012 Absolute Maximum Ratings1 Symbol Description Value Units VIN Input Voltage 6.0 V VENIN(MAX) Maximum EN to Input Voltage 0.3 IOUT2 DC Output Current PD/(VIN - VO) mA TJ Operating Junction Temperature Range -40 to 150 °C TLEAD Maximum Soldering Temperature (at leads, 10 sec) 300 Thermal Information Symbol Description Value Units ΘJA Thermal Resistance3 TSOPJW-12 110 °C/W TDFN33-12 50 PD Maximum Power Dissipation (TA = 25°C) TSOPJW-124 909 mW TDFN33-125 2 W 1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions specified is not implied. 2. Based on long-term current density limitation. 3. Mounted on an FR4 board. 4. Derate 9.1mW/°C above 25°C. 5. Derate 6.25mW/°C above 25°C.

Page 5

AAT3242 DATA SHEET 300mA/150mA Dual CMOS LDO Linear Regulator 4 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202259A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 10, 2012 Electrical Characteristics1 VIN = VOUT(NOM) + 1.0V for VOUT options greater than 1.5V. VIN = 2.5V for VOUT ≤ 1.5V. IOUT = 1.0mA, COUT = 2.2µF, CIN = 1.0µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C. Symbol Description Conditions Min Typ Max Units LDO A; IOUT = 300mA VOUT Output Voltage Tolerance IOUT = 1mA to 300mA TA = 25°C -1.5 1.5 % TA = -40 to 85°C -2.5 2.5 VIN Input Voltage VOUT + VDO5 5.5 V VDO Dropout Voltage2, 3 IOUT = 300mA 400 600 mV DVOUT/ VOUT*DVIN Line Regulation4 VIN = VOUT + 1V to 5.0 V 0.09 %/V DVOUT(Line) Dynamic Line Regulation IOUT = 300mA, VIN = VOUT + 1 to VOUT + 2, TR/TF = 2µs 5.0 mV DVOUT(Load) Dynamic Load Regulation IOUT = 1mA to 300mA, TR < 5µs 60 VEN(L) Enable Threshold Low 0.6 V VEN(H) Enable Threshold High 1.5 VPOK Power OK Trip Threshold VOUT Rising, TA = 25°C 90 94 98 % of VOUTVPOKHYS Power OK Hysteresis 1.0 VPOK(LO) Power OK Output Voltage Low ISINK = 1mA 0.4 V IPOK POK Output Leakage Current VPOK < 5.5V, VOUT in Regulation 1.0 µA IOUT Output Current VOUT > 1.2V 300 mA ISC Short-Circuit Current VOUT < 0.4V 600 IQ Ground Current VIN = 5V, No Load; EN A = VIN 70 125 µA ISD Shutdown Current VIN = 5V, EN A = 0V 1.0 PSRR Power Supply Rejection Ratio IOUT =10mA 1kHz 65 dB10kHz 45 1MHz 42 TSD Over-Temperature Shutdown Threshold 145 °C THYS Over-Temperature Shutdown Hysteresis 12 eN Output Noise eNBW = 300Hz to 50kHz 250 µVRMS TC Output Voltage Temperature Coefficient 22 ppm/°C 1. The AAT3242 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla- tion with statistical process controls. 2. VDO is defined as VIN - VOUT when VOUT is 98% of nominal. 3. For VOUT < 2.1V, VDO = 2.5 - VOUT. 4. CIN = 10µF. 5. To calculate minimum input voltage, use the following equation: VIN(MIN) = VOUT(MAX) + VDO(MAX) as long as VIN ≥ 2.5V.

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AAT3242 DATA SHEET 300mA/150mA Dual CMOS LDO Linear Regulator 5 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202259A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 10, 2012 Electrical Characteristics1 (continued) VIN = VOUT(NOM) + 1.0V for VOUT options greater than 1.5V. VIN = 2.5V for VOUT ≥ 1.5V. IOUT = 1.0mA, COUT = 2.2µF, CIN = 1.0µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C. Symbol Description Conditions Min Typ Max Units LDO B; IOUT = 150mA VOUT Output Voltage Tolerance IOUT = 1mA to 150mA TA = 25°C -1.5 1.5 %TA = -40 to 85°C -2.5 2.5 VIN Input Voltage VOUT + VDO5 5.5 V VDO Dropout Voltage2, 3 IOUT = 150mA 200 300 mV DVOUT/ VOUT*DVIN Line Regulation4 VIN = VOUT + 1V to 5.0V 0.09 %/V DVOUT(Line) Dynamic Line Regulation IOUT = 150mA, VIN = VOUT + 1 to VOUT + 2, TR/TF = 2µs 5.0 mV DVOUT(Load) Dynamic Load Regulation IOUT = 1mA to 150mA, TR <5µs 60 VEN(L) Enable Threshold Low 0.6 V VEN(H) Enable Threshold High 1.5 VPOK Power OK Trip Threshold VOUT Rising, TA = 25°C 90 94 98 % of VOUTVPOKHYS Power OK Hysteresis 1.0 VPOK(LO) Power OK Output Voltage Low ISINK = 1mA 0.4 V IPOK POK Output Leakage Current VPOK < 5.5V, VOUT in Regulation 1.0 µA IOUT Output Current VOUT > 1.2V 150 mA ISC Short-Circuit Current VOUT < 0.4V 600 IQ Ground Current VIN = 5V, No Load; EN B = VIN 70 125 µA PSRR Power Supply Rejection Ratio IOUT = 10mA 1kHz 65 dB10kHz 45 1MHz 42 TSD Over-Temperature Shutdown Threshold 145 °C THYS Over-Temperature Shutdown Hysteresis 12 eN Output Noise eNBW = 300Hz to 50kHz 250 µVRMS TC Output Voltage Temperature Coefficient 22 ppm/°C 1. The AAT3242 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla- tion with statistical process controls. 2. VDO is defined as VIN - VOUT when VOUT is 98% of nominal. 3. For VOUT < 2.3V, VDO = 2.5 - VOUT. 4. CIN = 10µF. 5. To calculate minimum input voltage, use the following equation: VIN(MIN) = VOUT(MAX) + VDO(MAX) as long as VIN ≥ 2.5V.

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AAT3242 DATA SHEET 300mA/150mA Dual CMOS LDO Linear Regulator 6 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202259A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 10, 2012 Typical Characteristics Unless otherwise noted, VIN = 5V, TA = 25°C. Dropout Voltage vs. Temperature 0 60 120 180 240 300 360 420 480 540 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 Temperature (°C) D ro po ut V ol ta ge (m V) IL = 300mA IL = 150mA IL = 100mA IL = 50mA Dropout Characteristics 2.00 2.20 2.40 2.60 2.80 3.00 3.20 2.70 2.80 2.90 3.00 3.10 3.20 3.30 Input Voltage (V) O ut pu t V ol ta ge (V ) IOUT = 300mA IOUT = 150mA IOUT = 100mA IOUT = 50mAIOUT = 10mA IOUT = 0mA Dropout Voltage vs. Output Current 0 50 100 150 200 250 300 350 400 450 500 0 50 100 150 200 250 300 Output Current (mA) D ro po ut V ol ta ge (m V) 85°C 25°C -40°C Ground Current vs. Input Voltage 0 10 20 30 40 50 60 70 80 90 2 2.5 3 3.5 4.54 5 Input Voltage (V) G ro un d C ur re nt (µ A ) IOUT = 0mA IOUT = 10mA IOUT = 50mA IOUT = 150mA IOUT = 300mA Quiescent Current vs. Temperature 0 10 20 30 40 50 60 70 80 90 100 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 Temperature (°C) Q ui es ce nt C ur re nt (µ A ) Line Transient Response 2.85 2.90 2.95 3.00 3.05 3.10 3.15 3.20 3.25 Time (100µs/div) O utput Voltage (V) -2 -1 0 1 2 3 4 5 6 In pu t V ol ta ge (V ) VIN VOUT

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AAT3242 DATA SHEET 300mA/150mA Dual CMOS LDO Linear Regulator 7 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202259A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 10, 2012 Typical Characteristics Unless otherwise noted, VIN = 5V, TA = 25°C. Load Transient Response 2.60 2.65 2.70 2.75 2.80 2.85 2.90 Time (100µs/div) O ut pu t V ol ta ge (V ) -100 0 100 200 300 400 500 O utput C urrent (m A )IOUT VOUT Load Transient Response 300mA 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 Time (10µs/div) O ut pu t V ol ta ge (V ) -100 0 100 200 300 400 500 600 700 800 O utput C urrent (m A ) VOUT IOUT POK Output Response Time (200µs/div) VIN (2V/div) VOUT (2V/div) VPOK (1V/div) Over-Current Protection -200 0 200 400 600 800 1000 1200 Time (20ms/div) O ut pu t C ur re nt (m A ) Self Noise 0.01 0.1 1 10 0.01 0.1 1 10 100 1000 Frequency (kHz) N oi se A m pl itu de (m V/ rt H z) VEN(H) and VEN(L) vs. VIN 1.050 1.075 1.100 1.125 1.150 1.175 1.200 1.225 1.250 2.5 3.0 3.5 4.0 4.5 5.0 5.5 Input Voltage (V) V E N (V ) VEN(H) VEN(L)

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AAT3242 DATA SHEET 300mA/150mA Dual CMOS LDO Linear Regulator 8 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202259A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 10, 2012 Functional Description The AAT3242 is a high performance dual LDO regulator with two Power OK pins. The first regulator (A) sources 300mA of current, while the second (B) regulator can deliver 150mA. Each regulator has an integrated Power OK comparator which indicates when the respective out- put is out of regulation. The POK pins are open drain outputs, and they are held low when the respective regulator is in shutdown mode. The device has independent enable pins to shut down each LDO regulator for power conservation in portable products. Forcing EN A/B low (<0.6V) powers down the regulators and draws a maximum of 1.0µA. The AAT3242 has short-circuit and thermal protection in case of adverse operating conditions. Device power dissipation is limited to the package type and thermal dissipation properties. Refer to the Thermal Considerations section of this datasheet for details on device operation at max- imum output current loads. Applications Information To assure the maximum possible performance is obtained from the AAT3242, please refer to the following applica- tion recommendations. Input Capacitor A 1µF or larger capacitor is typically recommended for CIN in most applications. A CIN capacitor is not required for basic LDO regulator operation; however, if the AAT3242 is physically located more than three centime- ters from an input power source, a CIN capacitor will be needed for stable operation. CIN should be located as closely to the device VIN pin as practically possible. CIN values greater than 1µF will offer superior input line transient response and will assist in maximizing the highest possible power supply ripple rejection. Ceramic, tantalum, or aluminum electrolytic capacitors may be selected for CIN. There is no specific capacitor ESR requirement for CIN; however, for 300mA LDO regu- Functional Block Diagram Error Amplifier Over-Current Protection Over - Temperature Protection Voltage Reference + - INA ENA POKA OUTA 91% VREF + - Error Amplifier Over-Current Protection Over - Temperature Protection Voltage Reference + - INB ENB POKB GND OUTB 91% VREF + -

Page 10

AAT3242 DATA SHEET 300mA/150mA Dual CMOS LDO Linear Regulator 9 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202259A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 10, 2012 lator output operation, ceramic capacitors are recom- mended for CIN due to their inherent capability over tantalum capacitors to withstand input current surges from low impedance sources such as batteries in porta- ble devices. Output Capacitor For proper load voltage regulation and operational stabil- ity, a capacitor is required between pins VOUT and GND. The COUT capacitor connection to the LDO regulator ground pin should be made as direct as practically pos- sible for maximum device performance. The AAT3242 has been specifically designed to function with very low ESR ceramic capacitors. For best performance, ceramic capacitors are recommended. Typical output capacitor values for maximum output cur- rent conditions range from 1µF to 10µF. Applications utilizing the exceptionally low output noise and optimum power supply ripple rejection characteris- tics of the AAT3242 should use 2.2µF or greater for COUT. If desired, COUT may be increased without limit. In low output current applications where output load is less than 10mA, the minimum value for COUT can be as low as 0.47µF. Capacitor Characteristics Ceramic composition capacitors are highly recommend- ed over all other types of capacitors for use with the AAT3242. Ceramic capacitors offer many advantages over their tantalum and aluminum electrolytic counter- parts. A ceramic capacitor typically has very low ESR, is lower cost, has a smaller PCB footprint, and is non- polarized. Line and load transient response of the LDO regulator is improved by using low ESR ceramic capaci- tors. Since ceramic capacitors are non-polarized, they are not prone to incorrect connection damage. Equivalent Series Resistance ESR is a very important characteristic to consider when selecting a capacitor. ESR is the internal series resistance associated with a capacitor that includes lead resistance, internal connections, size and area, material composi- tion, and ambient temperature. Typically, capacitor ESR is measured in milliohms for ceramic capacitors and can range to more than several ohms for tantalum or alumi- num electrolytic capacitors. Ceramic Capacitor Materials Ceramic capacitors less than 0.1µF are typically made from NPO or C0G materials. NPO and C0G materials gen- erally have tight tolerance and are very stable over tem- perature. Larger capacitor values are usually composed of X7R, X5R, Z5U, or Y5V dielectric materials. These two material types are not recommended for use with LDO regulators since the capacitor tolerance can vary more than ±50% over the operating temperature range of the device. A 2.2µF Y5V capacitor could be reduced to 1µF over temperature; this could cause problems for circuit operation. X7R and X5R dielectrics are much more desir- able. The temperature tolerance of X7R dielectric is bet- ter than ±15%. Capacitor area is another contributor to ESR. Capacitors which are physically large in size will have a lower ESR when compared to a smaller sized capacitor of an equivalent material and capacitance value. These larger devices can improve circuit transient response when compared to an equal value capacitor in a smaller package size. Consult capacitor vendor data- sheets carefully when selecting capacitors for LDO regu- lators. POK Output The AAT3242 features integrated Power OK comparators which can be used as an error flag. The POK open drain output goes low when output voltage is 6% (typ) below its nominal regulation voltage. Additionally, any time one of the regulators is in shutdown, the respective POK out- put is pulled low. Connect a pull-up resistor from POKA to OUTA, and POKB to OUTB. Enable Function The AAT3242 features an LDO regulator enable/disable function. Each LDO has its own dedicated enable pin. These pins (EN) are active high and are compatible with CMOS logic. To assure the LDO regulators will switch on, ENA/B must be greater than 1.6V. The LDO regulators will shut down when the voltage on the ENA/B pins falls below 0.6V. In shutdown, the AAT3242 will consume less than 1.0µA of current. If the enable function is not needed in a specific application, it may be tied to VIN to keep the LDO regulator in a continuously on state. When the LDO regulators are in shutdown mode, an internal 20W resistor is connected between VOUT and GND. This is intended to discharge COUT when the LDO regulators are disabled. The internal 20W has no adverse effects on device turn-on time.

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