TPS70845 Datasheet, PDF (1/29 Pages) Texas Instruments – DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS

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 Dual Output Voltages for Split-Supply
Applications
D Independent Enable Functions (See Part
Number TPS707xx for Sequenced Outputs)
D Output Current Range of 250 mA on
Regulator 1 and 125 mA on Regulator 2
D 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
D Open Drain Power-On Reset With 120-ms
Delay
D Open Drain Power Good for Regulator 1
and Regulator 2
description
The TPS708xx is a low-dropout voltage regulator
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.
D Fast Transient Response
D Ultralow 190 µA (typ) Quiescent Current
D 1 µA Input Current During Standby
D Low Noise: 65 µV_RMS Without Bypass
Capacitor
D Quick Output Capacitor Discharge Feature
D One Manual Reset Input
D 2% Accuracy Over Load and Temperature
D Undervoltage Lockout (UVLO) Feature
D 20-Pin PowerPAD TSSOP Package
D Thermal Shutdown Protection
PWP PACKAGE
(TOP VIEW)
NC
1
20
V_IN1
2
19
V_IN1
3
18
MR
4
17
EN1
5
16
EN2
6
15
RESET
7
14
GND
8
13
V_IN2
9
12
V_IN2
10
11
NC – No internal connection
NC
V_OUT1
V_OUT1
V_SENSE1/FB1
PG1
PG2
V_SENSE2/FB2
V_OUT2
V_OUT2
NC
TPS70851 PWP
5V
VIN1
VOUT1
3.3 V
I/O
0.1 µF
0.1 µF
VIN2
VSENSE1
PG1
MR
RESET
10 µF
250 kΩ
PG1
MR _{>2 V}
<0.7 V
250 kΩ
250 kΩ
RESET
>2 V
<0.7 V
>2 V
<0.7 V
EN1
EN1
EN2 _EN2
PG2
VSENSE2
VOUT2
PG2
10 µF
1.8 V
Core
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.
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.
Copyright  2002, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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