Datasheet Texas Instruments TPS77625DG4 — 数据表

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 DESCRIPTION 1 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 85ВµA Typical Quiescent Current Fast Transient Response 2% Tolerance Over Specified Conditions for
Fixed-Output Versions 8-Pin SOIC and 20-Pin TSSOP PowerPADв„ў
(PWP) Packages Thermal Shutdown Protection
23 APPLICATIONS Typical Application Circuit
(Fixed Voltage Options)
6
7 RESET/
PG IN 5 RESET/PG Power good (PG) of the TPS776xx is an active high
output, which can be used to implement a power-on
reset or a low-battery indicator. IN
OUT 0.1mF 16 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 current is very
low and independent of output loading (typically 85ВµA …