TPS775xx, TPS776xx
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TPS775xx, TPS776xx
www.ti.com.............................................................................................................................................. SLVS232J – SEPTEMBER 1999 – REVISED MARCH 2009
TPS775xx with RESET Output, TPS776xx with PG Output FAST-TRANSIENT-RESPONSE 500mA LOW-DROPOUT
VOLTAGE REGULATORS
FEATURES
1
23 Open Drain Power-On Reset with 200ms Delay (TPS775xx)
Open Drain Power Good (TPS776xx) 500mA Low-Dropout
Voltage Regulator Available in Fixed Output and Adjustable
Versions Dropout
Voltage to 169mV (Typ) at 500mA
(TPS77x33) Ultralow 85µA Typical Quiescent Current Fast Transient Response 2% Tolerance Over Specified Conditions for
Fixed-Output Versions 8-Pin SOIC and 20-Pin TSSOP PowerPAD™
(PWP) Packages Thermal Shutdown Protection
APPLICATIONS
FPGA Power DSP Core and I/O
Voltages
Typical Application Circuit (Fixed
Voltage Options)
VIN 0.1mF
6 IN
7 IN
5 EN
RESET/ 16 PG
OUT 14 OUT 13
GND 3
RESET /PG
VOUT
(1)
COUT +
10mF
DESCRIPTION
The TPS775xx and TPS776xx devices are designed to have a fast transient response and be stable with a 10µF low ESR capacitor. This combination provides high performance at a reasonable cost.
Because the PMOS device behaves as a low-value resistor, the dropout
voltage is very low (typically 169mV at an output current of 500mA for the TPS77x33) and is directly proportional to the output current. Additionally, since the PMOS pass element is a
voltage-driven device, the quiescent curre...
