TPS797 Datasheet, PDF (1/18 Pages) Texas Instruments – Ultralow IQ, 50mA LDO Linear Regulators with Power Good Output in SC70 Package

TPS797xx
www.ti.com
SLVS332I – MARCH 2001 – REVISED OCTOBER 2013
Ultralow I_Q, 50mA LDO Linear Regulators with Power Good Output
in SC70 Package
Check for Samples: TPS797xx
FEATURES
1
•2 50mA Low-Dropout Regulator
• Ultralow 1.2μA Quiescent Current at 10mA
• 5-Pin SC70 (DCK) Package
• Integrated Power Good Output
• Stable With Any Capacitor (> 0.47μF)
• Dropout Voltage Typically 105mV at 10mA
(TPS79733)
• Over-Current Limitation
• –40°C to +85°C Operating Junction
Temperature Range
APPLICATIONS
• Battery-Powered Microcontrollers and
Microprocessors
DESCRIPTION
The TPS797xx family of low-dropout (LDO) voltage
regulators offers the benefits of low-dropout voltage
and ultralow-power operation. The device is stable
with any capacitor (> 0.47μF). Therefore,
implementations of this device require very little board
space due to the miniaturized packaging and
potentially small output capacitor. In addition, the
family includes an integrated open drain active-high
power good (PG) output. Intended for use in
microcontroller-based, battery-powered applications,
the TPS797xx family low dropout and ultralow-
powered operation results in a significant increase in
system battery operating life. The small packaging
minimizes consumption of board space.
The device is enabled when the applied voltage
exceeds the minimum input voltage. The usual PNP
pass transistor has been replaced by a PMOS pass
element. Because the PMOS pass element behaves
as a low-value resistor, the dropout voltage is very
low, typically 105mV at 10mA of load current, and is
directly proportional to the load current. The
quiescent current is ultralow (1.2μA typically) and is
stable over the entire range of output load current
(0mA to 50mA). When properly configured with a pull-
up resistor, the PG output can be used to implement
a power-on reset or low battery indicator.
DCK PACKAGE
(Top View)
PG 1
GND 2
5 OUT
NC 3
4 IN
2.00
1.75
1.50
V_I = 4.3V
V_O = 3.3V
C_O = 1mF
I_O = 10mA
1.25
1.00
0.75
0.50
-40
-15
10
35
60
85
Free-Air Temperature (°C)
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2001–2013, Texas Instruments Incorporated