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TPS734XX Datasheet(PDF) 4 Page - Texas Instruments

Part No. TPS734XX
Description  250mA, Low Quiescent Current, Ultra-Low Noise, High PSRR Low-Dropout Linear Regulator
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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TPS734XX Datasheet(HTML) 4 Page - Texas Instruments

 
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DEVICE INFORMATION
FUNCTIONAL BLOCK DIAGRAMS
Thermal
Shutdown
UVLO
Current
Limit
3.3MW
Overshoot
Detect
500kW
1.208V
Bandgap
IN
EN
FB
OUT
GND
400W
Thermal
Shutdown
UVLO
Current
Limit
2 A
m
Overshoot
Detect
500kW
Quickstart
1.208V
Bandgap
(1)
IN
EN
NR
OUT
GND
400W
NOTE(1): Fixedvoltageversionsbetween1.0Vto1.2Vhavea1.0Vbandgapcircuit
insteadofa1.208Vbandgapcircuit.
PIN CONFIGURATIONS
TPS734xxDDC
TSOT23-5
(TOPVIEW)
OUT
NR
IN
GND
EN
1
2
3
5
4
TPS73401DDC
TSOT23-5
(TOPVIEW)
OUT
FB
IN
GND
EN
1
2
3
5
4
TPS734xxDRV
2mmx2mmSON-6
(TOPVIEW)
IN
N/C
EN
6
5
4
OUT
NR
GND
1
2
3
GND
TPS73401DRV
2mmx2mmSON-6
(TOPVIEW)
IN
N/C
EN
6
5
4
OUT
FB
GND
1
2
3
GND
TPS734xx
SBVS089F – DECEMBER 2007 – REVISED FEBRUARY 2009 ........................................................................................................................................ www.ti.com
Figure 1. Fixed Voltage Versions
Figure 2. Adjustable Voltage Versions
PIN DESCRIPTIONS
TPS734xx
NAME
DDC
DRV
DRB
DESCRIPTION
IN
1
6
8
Input supply.
GND
2
3, Pad
4
Ground. The pad must be tied to GND.
Driving the enable pin (EN) high turns on the regulator. Driving this pin low puts the
EN
3
4
5
regulator into shutdown mode. EN can be connected to IN if not used.
Fixed voltage versions only; connecting an external capacitor to this pin bypasses noise
NR
4
2
3
generated by the internal bandgap. This allows output noise to be reduced to very low
levels.
Adjustable version only; this is the input to the control loop error amplifier, and is used to set
FB
4
2
3
the output voltage of the device.
Output of the regulator. A small capacitor (total typical capacitance
≥ 2.0
µF ceramic) is
OUT
5
1
1
needed from this pin to ground to assure stability.
N/C
5
2, 6, 7
Not internally connected. This pin must either be left open, or tied to GND.
4
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Copyright © 2007–2009, Texas Instruments Incorporated


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