Datasheet tps73633

TPS736xx www.ti.com SBVS038T – SEPTEMBER 2003 – REVISED AUGUST 2010

Cap-Free, NMOS, 400mA Low-Dropout Regulator with Reverse Current Protection
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FEATURES
• Stable with No Output Capacitor or Any Value or Type of Capacitor Input Voltage Range of 1.7V to 5.5V Ultra-Low Dropout Voltage: 75mV typ Excellent Load Transient Response—with or without Optional Output Capacitor New NMOS Topology Delivers Low Reverse Leakage Current Low Noise: 30mVRMS typ (10Hz to 100kHz) 0.5% Initial Accuracy 1% Overall Accuracy Over Line, Load, and Temperature Less Than 1mA max IQ in Shutdown Mode Thermal Shutdown and Specified Min/Max Current Limit Protection Available in Multiple Output Voltage Versions – Fixed Outputs of 1.20V to 5.0V – Adjustable Output from 1.20V to 5.5V – Custom Outputs Available

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DESCRIPTION
The TPS736xx family of low-dropout (LDO) linear voltage regulators uses a new topology: an NMOS pass element in a voltage-follower configuration. This topology is stable using output capacitors with low ESR, and even allows operation without a capacitor. It also provides high reverse blockage (low reverse current) and ground pin current that is nearly constant over all values of output current. The TPS736xx uses an advanced BiCMOS process to yield high precision while delivering very low dropout voltages and low ground pin current. Current consumption, when not enabled, is under 1mA and ideal for portable applications. The extremely low output noise (30mVRMS with 0.1mF CNR) is ideal for powering VCOs. These devices are protected by thermal shutdown and foldback current limit. space
DRB PACKAGE 3mmx 3mm SON (TOP VIEW) OUT 1 N/C 2 NR/FB 3 GND 4 8 IN 7 N/C 6 N/C 5 EN
IN GND EN 1 2 3 4 NR/FB 5 OUT

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DBV PACKAGE SOT23 (TOP VIEW)

APPLICATIONS
• • • • Portable/Battery-Powered Equipment Post-Regulation for Switching Supplies Noise-Sensitive Circuitry such as VCOs Point of Load Regulation for DSPs, FPGAs, ASICs, and Microprocessors
Optional