TPS77101-Q1 Datasheet, PDF (2/25 Pages) Texas Instruments – 150-mA LDO REGULATORS WITH 8-PIN MSOP PACKAGING

TPS771xx-Q1 WITH RESET OUTPUT
TPS772xx-Q1 WITH POWER GOOD OUTPUT
150ĆmA LDO REGULATORS WITH 8ĆPIN MSOP PACKAGING
SGLS295A − FEBRUARY 2005 − REVISED APRIL 2008
description (continued)
Because the PMOS device behaves as a low-value resistor, the dropout voltage is low (typically 115 mV at an
output current of 150 mA for 3.3-V option) and is directly proportional to the output current. Additionally, since
the PMOS pass element is a voltage-driven device, the quiescent current is low and independent of output
loading (typically 92 µA over the full range of output current, 0 mA to 150 mA). These two key specifications yield
a significant improvement in operating life for battery-powered systems.
The device is enabled when the EN pin is connected to a low-level input voltage. This LDO family also features
a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent
current to less than 1 µA at T_J = 25°C.
The TPS771xx features an integrated power-on reset, commonly used as a supply voltage supervisor (SVS)
or reset output voltage. The RESET output of the TPS771xx initiates a reset in DSP, microcomputer or
microprocessor systems at power up and in the event of an undervoltage condition. An internal comparator in
the TPS771xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulated
output voltage. When OUT reaches 95% of its regulated voltage, RESET goes to a high-impedance state after
a 220 ms delay. RESET goes to low-impedance state when OUT is pulled below 95% (i.e., over load condition)
of its regulated voltage.
For the TPS772xx, the power good terminal (PG) is an active high output, which can be used to implement a
power-on reset or a low-battery indicator. An internal comparator in the TPS772xx monitors the output voltage
of the regulator to detect an undervoltage condition on the regulated output voltage. When OUT falls below 82%
of its regulated voltage, PG goes to a low-impedance state. PG goes to a high-impedance state when OUT is
above 82% of its regulated voltage.
TJ
−40°C to 125°C
AVAILABLE OPTIONS^{}§
OUTPUT VOLTAGE
(V)
PACKAGED DEVICES^}
MSOP (DGK)
TYP
TPS771xx
SYMBOL
5
TPS77150QDGKQ1§
BMO
TPS77250QDGKQ1§
3.3
TPS77133QDGKQ1§
BMN
TPS77233QDGKQ1§
2.8
TPS77128QDGKQ1§
BMM
TPS77228QDGKQ1§
2.7
TPS77127QDGKQ1§
BML
TPS77227QDGKQ1§
1.8
TPS77118QDGKQ1§
BMK
TPS77218QDGKQ1§
1.5
TPS77115QDGKQ1§
BMJ
TPS77215QDGKQ1§
TPS772xx
SYMBOL
BMI
BMH
BMG
BMF
BME
BMD
Adjustable
1.5 V to 5.5 V
TPS77101QDGKQ1
ANP
TPS77201QDGKQ1§
BMC
† _{For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see}
the TI web site at http://www.ti.com.
‡ _{Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.}
§ _{Product Preview}
NOTE: The TPS77101 and TPS77201 are programmable using an external resistor divider (see the application information
section). The DGK package is available taped and reeled. Add an R suffix to the device type (e.g., TPS77101QDGKRQ1).
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