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TPS70445 Datasheet

  • TPS70445

  • DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS WITH INTEGRATED S...

  • 569.81KB

  • 32頁(yè)

  • TI

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TPS70445, TPS70448, TPS70451, TPS70458, TPS70402
DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS
WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS
SLVS307B 鈥?SEPTEMBER 2000 鈥?REVISED APRIL 2003
D
Dual Output Voltages for Split-Supply
D
D
D
D
D
D
Applications
Independent Enable Functions (See Part
Number TPS703xx for Sequenced Outputs)
Capacitor
Output Current Range of 1 A on
D
Quick Output Capacitor Discharge Feature
Regulator 1 and 2 A on Regulator 2
D
One Manual Reset Input
Fast Transient Response
D
2% Accuracy Over Load and Temperature
Voltage Options Are 3.3-V/2.5-V, 3.3-V/1.8-V,
D
Undervoltage Lockout (UVLO) Feature
3.3-V/1.5-V, 3.3-V/1.2-V, and Dual Adjustable
D
24-Pin PowerPAD錚?TSSOP Package
Outputs
D
Thermal Shutdown Protection
Open Drain Power-On Reset With 120-ms
Delay
Open Drain Power Good for Regulator 1
1
24
GND/HEATSINK
GND/HEATSINK
and Regulator 2
2
23
V
V
IN1
V
IN1
D
Ultralow 185
碌A(chǔ)
(typ) Quiescent Current
D
2
碌A(chǔ)
Input Current During Standby
D
Low Noise: 78
碌V
RMS
Without Bypass
description
The TPS704xx family of devices consists of
dual-output low-dropout voltage regulators with
integrated SVS (RESET, POR, or power on reset)
and power good (PG) functions. These devices
are capable of supplying 1 A and 2 A by regulator
1 and regulator 2 respectively. Quiescent current
is typically 185
碌A(chǔ)
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.
TPS70451 PWP
5V
0.22
碌F
VIN1
VOUT1
VSENSE1
PG1
VIN2
0.22
碌F
>2 V
<0.7 V
>2 V
<0.7 V
VOUT2
EN2
MR
MR
NC
MR
EN1
EN2
RESET
GND
V
IN2
V
IN2
GND/HEATSINK
3
4
5
6
7
8
9
10
11
12
22
21
20
19
18
17
16
15
14
13
OUT1
V
OUT1
V
SENSE1
/FB1
NC
PG1
PG2
NC
V
SENSE2
/FB2
V
OUT2
V
OUT2
GND/HEATSINK
NC 鈥?No internal connection
3.3 V
22
碌F
250 k鈩?/div>
PG1
>2 V
<0.7 V
250 k鈩?/div>
RESET
PG2
250 k鈩?/div>
I/O
RESET
EN1
EN1
PG2
EN2
VSENSE2
1.8 V
47
碌F
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
錚?/div>
2000, 鈥?2003 Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
1

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