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TPS73HD301 Datasheet Preview

TPS73HD301 Datasheet

DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS

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TPS73HD301, TPS73HD318, TPS73HD325
DUALĆOUTPUT LOWĆDROPOUT VOLTAGE REGULATORS
SLVS167C − SEPTEMBER 1998 − REVISED − MAY 1999
D Dual Output Voltages for Split-Supply
Applications
D 3.3-V/Adjustable Output, 3.3 V/1.8 V, and
3.3 V/2.5
D Dropout Voltage < 80 mV Max at
IO = 100 mA (3.3-V option)
D Low Quiescent Current, Independent of
Load . . . 340 µA Typ Per Regulator
D Ultra-Low-Current Sleep State . . . 2 µA Max
D Dual Active-Low Reset Signals with 200-ms
Pulse Width
D Output Current Range of 0 mA to 750 mA
Per Regulator
D 28-Pin PowerPADTSSOP Package
NC
NC
1GND
1EN
1IN
1IN
NC
NC
2GND
2EN
2IN
2IN
NC
NC
PWP PACKAGE
(TOP VIEW)
1 28
2 27
3 26
4 25
5 24
6 23
7 22
8 21
9 20
10 19
11 18
12 17
13 16
14 15
1RESET
NC
NC
1FB/SENSE
1OUT
1OUT
2RESET
NC
NC
2SENSE
2OUT
2OUT
NC
NC
description
NC − No internal connection
The TPS73HD3xx family of dual voltage regulators offers very low dropout voltages and dual outputs in a
compact package. Designed primarily for DSP applications, these devices can be used in any mixed-output
voltage application with each regulator supporting up to 750 mA. Output current can be allocated as desired
between the two regulators and used to power many of todays DSPs. Low quiescent current and very low
dropout voltage assure maximum power usage in battery-powered applications. Texas Instruments PowerPAD
TSSOP package allows use of these devices with any voltage/current combination within the range of the listed
specifications without thermal problems, provided proper device mounting procedures are followed. Separate
inputs allow the designer to configure the source power as desired. Dual active-low reset signals allow resetting
of core-logic and I/O separately. Remote sense/feedback terminals provide regulation at the load. The
TPS73HD3xx are available in 28-pin PowerPAD TSSOP. They operate over a free-air temperature range of
−40°C to 125°C.
TA
−40°C to 125°C
AVAILABLE OPTIONS
REGULATOR 1
VO (V)
Adj (1.2 − 9.75 V)
REGULATOR 2
VO (V)
3.3 V
1.8 V
3.3 V
2.5 V
3.3 V
TSSOP
(PWP)
TPS73HD301PWPR
TPS73HD318PWPR
TPS73HD325PWPR
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.
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 1999, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1




etcTI

TPS73HD301 Datasheet Preview

TPS73HD301 Datasheet

DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS

No Preview Available !

TPS73HD301, TPS73HD318, TPS73HD325
DUALĆOUTPUT LOWĆDROPOUT VOLTAGE REGULATORS
SLVS167C − SEPTEMBER 1998 − REVISED − MAY 1999
functional block diagram
IN
††
EN
+
Vref = 1.182 V
Delayed
Reset
GND
Switch positions shown with EN low (active).
OUTPUT VOLTAGE
Adjustable
1.8 V
2.5 V
3.3 V
R1
0
122
260
420
R2 UNIT
233 k
233 k
233 k
Terminal Functions
TERMINAL
NAME
NO.
I/O
DESCRIPTION
NC
1, 2, 7, 8,
No connection
13−16, 20,
21, 26, 27
1GND
3 Regulator #1 ground
1EN 4 I Regulator #1 enable, low = enable
1IN 5, 6 I Regulator #1 input supply voltage
2GND
9 Regulator #2 ground
2EN 10 I Regulator #2 enable, low = enable
2IN
11, 12
I Regulator #2 input supply voltage
2OUT
17, 18
O Regulator #2 output voltage
2SENSE
19 I Regulator #2 output voltage sense (fixed output)
2RESET
22 O Regulator #2 reset signal, low = reset
1OUT
23, 24
O Regulator #1 output voltage
1FB/SENSE 25 I Regulator #1 output voltage feedback (adjustable output)
1RESET
28 O Regulator #1 reset signal, low = reset
OUT
RESET
SENSE/FB
R1
R2
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number TPS73HD301
Description DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS
Maker etcTI
Total Page 30 Pages
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