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OUT
OUT
GND/HEATSINK
GND/HEATSINK
PWP PACKAGE
(BOTTOM VIEW)
description
The TPS71Hxx integrated circuits are a family of
micropower low-dropout (LDO) voltage regula-
tors. An order of magnitude reduction in dropout
voltage and quiescent current over conventional
LDO performance is achieved by replacing the
typical pnp pass transistor with a PMOS device.
Thermal
Pad
Because the PMOS device behaves as a
low-value resistor, the dropout voltage is very low
(maximum of 32 mV at an output current of
100 mA for the TPS71H50) and is directly
proportional to the output current (see Figure 1). Additionally, since the PMOS pass element is a voltage-driven
device, the quiescent current is very low and remains independent of output loading (typically 285
碌A(chǔ)
over the
full range of output current, 0 mA to 500 mA). These two key specifications yield a significant improvement in
operating life for battery-powered systems. The LDO family also features a sleep mode; applying a TTL high
signal to EN (enable) shuts down the regulator, reducing the quiescent current to 0.5
碌A(chǔ)
maximum at T
J
= 25擄C.
NC 鈥?No internal connection
鈥?SENSE 鈥?Fixed voltage options only (TPS71H33,
TPS71H48, and TPS71H50)
鈥?FB 鈥?Adjustable version only (TPS71H01)
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.
Copyright
錚?/div>
2002, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303
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DALLAS, TEXAS 75265
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