TPS70745, TPS70748, TPS70751, TPS70758, TPS70702
DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS
WITH POWER UP SEQUENCING FOR SPLIT VOLTAGE DSP SYSTEMS
SLVS291 – MAY 2000
Dual Output Voltages for Split-Supply
Applications
Open Drain Power Good for Regulator 1
Ultra Low 190 µA (typ) Quiescent Current
1 µA Input Current During Standby
Selectable Power Up Sequencing for DSP
Applications
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
Two Manual Reset Inputs
Fast Transient Response
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
Open Drain Power-On Reset With 120-ms
Delay
PWP PACKAGE
(TOP VIEW)
description
TPS707xx family devices are designed to provide
a complete power management solution for DSP,
processor power, ASIC, FPGA, and digital
applications where dual output voltage regulators
are required. Easy programmability of the
sequencing function makes this family ideal for
any DSP applications with power sequencing
requirement. Differentiated features, such as
accuracy, fast transient response, SVS supervi-
sory circuit (power on reset), manual reset inputs,
and enable function, provide a complete system
solution.
NC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
NC
V
V
V
IN1
IN1
OUT1
V
V
OUT1
MR1
MR2
EN
SEQ
GND
/FB1
/FB2
SENSE1
PG1
RESET
V
V
V
SENSE2
OUT2
V
V
IN2
IN2
OUT2
NC
TPS70751 PWP
DSP
I/O
3.3 V
V
OUT1
5 V
V
IN1
10 µF
0.1 µF
V
SENSE1
250 kΩ
PG1
PG1
MR2
MR2
MR1
>2 V
V
IN2
250 kΩ
<0.7 V
0.1 µF
RESET
RESET
MR1
EN
<0.7 V
>2 V
>2 V
EN
<0.7 V
V
SENSE2
SEQ
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 Incorporated.
Copyright 2000, 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