AAT3242

Application

• Cellular Phones
• Digital Cameras
• Handheld Instruments
• Microprocessor / DSP Core / I/O Power
• Notebook Computers
• PDAs and Handheld Computers
• Portable Communication Devices




Pinout






Specifications

• High/low current outputs: 300mA/150mA
• Low dropout:
  • LDO A: 400mV at 300mA
  • LDO B: 200mV at 150mA
• High output voltage accuracy: *Plus-or-minus*1.5%
• High PSRR: 65dB at 1KHz
• 70A quiescent current for each LDO
• Over-current/short-circuit protection
• Over-temperature protection
• Two Power OK (POK) outputs
• Independent power and enable inputs
• Uses low ESR ceramic capacitors
• -40 to +85C temperature range
• 12-pin TSOPJW package

Symbol	Description	Value	Units
VIN	Input Voltage	6.0	V
VENIN(MAX)	Maximum EN to Input Voltage	0.3	V
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	°C

Description

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The AAT3242 is a Dual Low Dropout Linear Regulator with Power OK outputs. Two integrated regulators provide 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 Power OK (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 (140A typical) and low dropout voltages, typically 200mV and 400mV at the full output current level, making it ideal for portable applications 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 a space-saving 12-pin TSOPJW package and is capable of operation over a -40 to +85C temperature range.

The AAT3242 is a dual low dropout linear regulator with Power OK (POK) outputs. Two integrated regulators provide 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 applications 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 a space-saving 12-pin TSOPJW package. This device is capable of operation over the -40°C to +85°C temperature range.