TPS70845, TPS70848, TPS70851, TPS70858, TPS70802
DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS
WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS
SLVS301B – JUNE 2000 – REVISED OCTOBER 2002
D
D
D
D
Dual Output Voltages for Split-Supply
Applications
D
D
D
D
D
D
D
D
D
D
Fast Transient Response
Ultralow 190 µA (typ) Quiescent Current
1 µA Input Current During Standby
Independent Enable Functions (See Part
Number TPS707xx for Sequenced Outputs)
Low Noise: 65 µV
Capacitor
Without Bypass
RMS
Output Current Range of 250 mA on
Regulator 1 and 125 mA on Regulator 2
Quick Output Capacitor Discharge Feature
One Manual Reset Input
Voltage Options Are 3.3-V/2.5-V, 3.3-V/1.8-V,
3.3-V/1.5-V, 3.3-V/1.2-V, and Dual Adjustable
Outputs
2% Accuracy Over Load and Temperature
Undervoltage Lockout (UVLO) Feature
20-Pin PowerPAD TSSOP Package
Thermal Shutdown Protection
D
D
Open Drain Power-On Reset With 120-ms
Delay
Open Drain Power Good for Regulator 1
and Regulator 2
PWP PACKAGE
(TOP VIEW)
description
NC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
NC
V
The TPS708xx is a low-dropout voltage regulator
V
V
IN1
IN1
OUT1
with integrated SVS (RESET, POR, or power on
reset) and power good (PG) functions. These
devices are capable of supplying 250 mA and 125
mA by regulator 1 and regulator 2 respectively.
Quiescent current is typically 190 µA at full load.
Differentiated features, such as accuracy, fast
transient response, SVS supervisory circuit
(power on reset), manual reset input, and
independent enable functions provide a complete
system solution.
V
V
OUT1
MR
EN1
EN2
/FB1
/FB2
SENSE1
PG1
PG2
RESET
GND
V
V
V
SENSE2
OUT2
V
V
IN2
IN2
OUT2
NC
NC – No internal connection
TPS70851 PWP
I/O
3.3 V
V
OUT1
5 V
V
IN1
10 µF
0.1 µF
V
SENSE1
250 kΩ
250 kΩ
PG1
PG1
MR
MR
>2 V
V
IN2
250 kΩ
<0.7 V
0.1 µF
EN1
RESET
RESET
PG2
>2 V
>2 V
PG2
EN1
EN2
<0.7 V
<0.7 V
EN2
V
SENSE2
1.8 V
Core
V
OUT2
10 µF
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.
PowerPAD is a trademark of Texas Instruments.
Copyright 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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265