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TPS75318QPWP Datasheet(PDF) 2 Page - Texas Instruments

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Part # TPS75318QPWP
Description  FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS75318QPWP Datasheet(HTML) 2 Page - Texas Instruments

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TPS75101Q, TPS75115Q, TPS75118Q, TPS75125Q, TPS75133Q WITH POWER GOOD
TPS75301Q, TPS75315Q, TPS75318Q, TPS75325Q, TPS75333Q WITH RESET
FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
SLVS241B – MARCH 2000 – REVISED JUNE 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 160 mV
at an output current of 1.5 A for the TPS75x33Q) and is directly proportional to the output current. Additionally,
since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent
of output loading (typically 75
µA over the full range of output current, 1 mA to 1.5 A). These two key
specifications yield a significant improvement in operating life for battery-powered systems.
The device is enabled when EN is connected to a low level voltage. This LDO family also features a sleep mode;
applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent current to less than
1
µA at TJ = 25°C.
For the TPS751xxQ, the power-good terminal (PG) is an active high, open drain output, which can be used to
implement a power-on reset or a low-battery indicator.
The RESET (SVS, POR, or power on reset) output of the TPS753xxQ initiates a reset in microcomputer and
microprocessor systems in the event of an undervoltage condition. An internal comparator in the TPS753xxQ
monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage.
When the output reaches 95% of its regulated voltage, RESET goes to a high-impedance state after a 100-ms
delay. RESET goes to a logic-low state when the regulated output voltage is pulled below 95% (i.e., over load
condition) of its regulated voltage.
The TPS751xxQ or TPS753xxQ is offered in 1.5-V, 1.8-V, 2.5-V and 3.3-V fixed-voltage versions and in an
adjustable version (programmable over the range of 1.5 V to 5 V). Output voltage tolerance is specified as a
maximum of 2% over line, load, and temperature ranges. The TPS751xxQ and TPS753xxQ families are
available in 20-pin TSSOP (PWP) packages.
AVAILABLE OPTIONS
TJ
OUTPUT VOLTAGE
TSSOP (PWP)
TJ
(TYP)
PG
RESET
3.3 V
TPS75133QPWP
TPS75333QPWP
2.5 V
TPS75125QPWP
TPS75325QPWP
– 40
°C to 125°C
1.8 V
TPS75118QPWP
TPS75318QPWP
1.5 V
TPS75115QPWP
TPS75315QPWP
Adjustable 1.5 V to 5 V
TPS75101QPWP
TPS75301QPWP
NOTE: The TPS75x01 is programmable using an external resistor divider (see application
information). The PWP package is available taped and reeled. Add an R suffix to the
device type (e.g., TPS75201QPWPR) to indicate tape and reel.
† See application information section for capacitor selection details.
PG or
RESET
OUT
OUT
4
3
5
IN
IN
EN
GND
17
6
8
9
VI
0.22
µF
PG or RESET Output
VO
47
µF
+
CO†
SENSE
7
Figure 1. Typical Application Configuration (For Fixed Output Options)


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