1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
GND/HEATSINK
GND/HEATSINK
V
IN1
V
IN2
V
OUT2
V
OUT1
V
SENSE2
/FB2
V
IN1
V
IN2
V
OUT2
V
OUT1
NC
MR
EN1
EN2
RESET
GND
NC=Nointernalconnection
GND/HEATSINK
GND/HEATSINK
NC
NC
PG2
PG1
V
SENSE1
/FB1
PWPPACKAGE
(TOPVIEW)
1.8 V
V
IN1
V
IN2
EN1
EN2
V
OUT1
V
SENSE1
PG1
MR
RESET
PG2
V
SENSE2
V
OUT2
TPS70451PWP
5V
3.3V
I/O
PG2
Core
0.22 mF
RESET
22 mF
47 mF
0.22 mF
MR
PG1
EN1
250kW
>2V
<0.7V
250kW
>2V
<0.7V
>2V
<0.7V
EN2
250kW
TPS70445, TPS70448
TPS70451, TPS70458
TPS70402
www.ti.com
SLVS307F –SEPTEMBER 2000–REVISED APRIL 2010
DUAL-OUTPUT, LOW DROPOUT VOLTAGE REGULATORS
WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS
Check for Samples: TPS70445, TPS70448, TPS70451, TPS70458, TPS70402
1
FEATURES
DESCRIPTION
23
• Dual Output Voltages for Split-Supply
The TPS704xx family of devices consists of
Applications
dual-output, low-dropout voltage regulators with
integrated SVS (RESET, POR, or power on reset)
• Independent Enable Functions (See Part
and power good (PG) functions. These devices are
Number TPS703xx for Sequenced Outputs)
capable of supplying 1 A and 2 A by regulator 1 and
• Output Current Range of 1 A on Regulator 1
regulator 2 respectively. Quiescent current is typically
and 2 A on Regulator 2
185 mA at full load. Differentiated features, such as
• Fast Transient Response
accuracy, fast transient response, SVS supervisory
circuit (power on reset), manual reset input, and
• Voltage Options: 3.3-V/2.5-V, 3.3-V/1.8-V,
independent enable functions provide a complete
3.3-V/1.5-V, 3.3-V/1.2-V, and Dual Adjustable
system solution.
Outputs
• Open Drain Power-On Reset with 120-ms Delay
• Open Drain Power Good for Regulator 1 and
Regulator 2
• Ultralow 185mA (typ) Quiescent Current
• 2mA Input Current During Standby
• Low Noise: 78mV
RMS
Without Bypass Capacitor
• Quick Output Capacitor Discharge Feature
• One Manual Reset Input
• 2% Accuracy Over Load and Temperature
• Undervoltage Lockout (UVLO) Feature
• 24-Pin PowerPAD™ TSSOP Package
• Thermal Shutdown Protection
1
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.
2PowerPAD is a trademark of Texas Instruments.
3All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2000–2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
