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TPS7101 Datasheet

  • TPS7101

  • 最低压降 (LDO) PMOS 可调节稳压器

  • 703.70KB

  • 38页

  • TI

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TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092F 鈥?NOVEMBER 1994 鈥?REVISED JANUARY 1997
D
D
D
D
D
D
D
D
Available in 5-V, 4.85-V, and 3.3-V
Fixed-Output and Adjustable Versions
Very Low-Dropout Voltage . . . Maximum of
32 mV at I
O
= 100 mA (TPS7150)
Very Low Quiescent Current 鈥?Independent
of Load . . . 285
碌A
Typ
Extremely Low Sleep-State Current
0.5
碌A
Max
2% Tolerance Over Specified Conditions
For Fixed-Output Versions
Output Current Range of 0 mA to 500 mA
TSSOP Package Option Offers Reduced
Component Height for Space-Critical
Applications
Power-Good (PG) Status Output
D OR P PACKAGE
(TOP VIEW)
GND
EN
IN
IN
1
2
3
4
8
7
6
5
PG
SENSE
鈥?/div>
/FB
鈥?/div>
OUT
OUT
PW PACKAGE
(TOP VIEW)
description
The TPS71xx integrated circuits are a family
of micropower low-dropout (LDO) voltage
regulators. 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.
GND
GND
GND
NC
NC
EN
NC
IN
IN
IN
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
PG
NC
NC
FB
鈥?/div>
NC
SENSE
鈥?/div>
OUT
OUT
NC
NC
NC 鈥?No internal connection
鈥?SENSE 鈥?Fixed voltage options only
(TPS7133, TPS7148, and TPS7150)
鈥?FB 鈥?Adjustable version only (TPS7101)
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 TPS7150) 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
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
maximum at T
J
= 25掳C.
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
漏
1997, 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
鈥?/div>
DALLAS, TEXAS 75265
1

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