TPS75801_15 Datasheet, PDF (1/26 Pages) Texas Instruments – FAST-TRANSIENT RESPONSE, 3A, LOW-DROPOUT VOLTAGE REGULATORS

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TPS75801, TPS758A01
TPS75815, TPS75818
TPS75825, TPS75833
SLVS330F – JUNE 2001 – REVISED APRIL 2007
FAST-TRANSIENT RESPONSE, 3A, LOW-DROPOUT VOLTAGE REGULATORS
FEATURES
• 3A Low-Dropout Voltage Regulator
• Available in 1.5V, 1.8V, 2.5V, and 3.3V
Fixed-Output and Adjustable Versions
• Dropout Voltage Typically 150mV at 3A
(TPS75833)
• V_REF and Pinout Compatible with MIC29302
(TPS758A01)
• Low 125µA Typical Quiescent Current
• Fast Transient Response
• 3% Tolerance Over Specified Conditions for
Fixed-Output Versions
• Available in 5-Pin TO-220 and TO-263
Surface-Mount Packages
• Thermal Shutdown Protection
DESCRIPTION
The TPS758xx family of 3A low dropout (LDO)
regulators contains four fixed voltage option
regulators and an adjustable voltage option
regulator. These devices are capable of supplying 3A
of output current with a dropout of 150mV
(TPS75833). Therefore, the device is capable of
performing a 3.3V to 2.5V conversion.
Quiescent current is 125µA at full load and drops to
less than 1µA when the device is disabled. The
TPS758xx is designed to have fast transient
response for large load current changes.
Because the PMOS device behaves as a low-value
resistor, the dropout voltage is very low (typically
150mV at an output current of 3A for the TPS75833)
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
125µA over the full range of output current). These
two key specifications yield a significant
improvement in operating life for battery-powered
systems.
The device is enabled when EN (enable) is
connected to a high voltage level (> 2V). Applying a
low voltage level (< 0.7V) to EN shuts down the
regulator, reducing the quiescent current to less than
1µA at T_J = +25°C.
The TPS758xx is offered in 1.5V, 1.8V, 2.5V, and
3.3V fixed-voltage versions and in an adjustable
version (programmable over the range of 1.22V to
5V). Output voltage tolerance is specified as a
maximum of 3% over line, load, and temperature
ranges. The TPS758xx family is available in a 5-pin
TO-220 (KC) and TO-263 (KTT) packages.
EN
IN
GND
OUTPUT
FB/NC
TO−220 (KC) PACKAGE
(TOP VIEW)
1
2
3
4
5
TO−263 (KTT) PACKAGE
(TOP VIEW)
EN
1
IN
2
GND
3
OUTPUT
4
FB/NC
5
TPS75833
DROPOUT VOLTAGE
vs
JUNCTION TEMPERATURE
250
IO = 3 A
V_O = 3.3 V
200
150
100
50
TPS75815
LOAD TRANSIENT RESPONSE
150
100
VO = 1.5 V
CO = 100 µF
50
0
−50
−100
−150
di
dt
=
0.75 A
s
3
0
−40 −25 −10 5 20 35 50 65 80 85 110 125
T_J −Junction Temperature −_C
0
0 20 40 60 80 100 120 140 160 180 200
t −Time −µs
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
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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 © 2001–2007, Texas Instruments Incorporated