TPS70248PWP Datasheet, PDF (1/37 Pages) Texas Instruments – DUAL-OUTPUT, LOW DROPOUT VOLTAGE REGULATORS WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS

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TPS70245, TPS70248
TPS70251, TPS70258
TPS70202
SLVS286E – JUNE 2000 – REVISED DECEMBER 2009
DUAL-OUTPUT, LOW DROPOUT VOLTAGE REGULATORS
WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS
FEATURES
1
•23 Dual Output Voltages for Split-Supply
Applications
• Independent Enable Functions (See Part
Number TPS701xx for Sequenced Outputs)
• Output Current Range of 500mA on Regulator
1 and 250mA on Regulator 2
• Fast Transient Response
• Voltage Options: 3.3V/2.5V, 3.3V/1.8V,
3.3V/1.5V, 3.3V/1.2V, and Dual Adjustable
Outputs
• Open Drain Power-On Reset with 120ms Delay
• Open Drain Power Good for Regulator 1 and
Regulator 2
• Ultralow 190μA (typ) Quiescent Current
• 1μA Input Current During Standby
• Low Noise: 65μV_RMS Without Bypass Capacitor
• Quick Output Capacitor Discharge Feature
• One Manual Reset Input
• 2% Accuracy Over Load and Temperature
• Undervoltage Lockout (UVLO) Feature
• 20-Pin PowerPAD™ TSSOP Package
• Thermal Shutdown Protection
DESCRIPTION
The TPS702xx 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 500mA and 250mA by regulator
1 and regulator 2 respectively. Quiescent current is
typically 190μA 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.
PWP PACKAGE
(TOP VIEW)
NC
1
V_IN1
2
V_IN1
3
MR
4
EN1
5
EN2
6
RESET
7
GND
8
V_IN2
9
V_IN2
10
20
NC
19
V_OUT1
18
V_OUT1
17
V_SENSE1/FB1
16
PG1
15
PG2
14
V_SENSE2/FB2
13
V_OUT2
12
V_OUT2
11
NC
NC = No internal connection
TPS70251 PWP
5V
VIN1
VOUT1
3.3 V
I/O
0.1 mF
0.1 mF
VIN2
VSENSE1
PG1
MR
RESET
10 mF
250 kW
PG1
MR _{>2 V}
<0.7 V
250 kW
250 kW
RESET
>2 V
<0.7 V
>2 V
<0.7 V
EN1
EN1
EN2 _EN2
PG2
VSENSE2
VOUT2
PG2
10 mF
1.8 V
Core
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.
PowerPAD is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2000–2009, Texas Instruments Incorporated