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TPS75801, TPS758A01
,
TPS75815, TPS75818
TPS75825, TPS75833
www.ti.com
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
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.
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.
TO−220 (KC) PACKAGE
(TOP VIEW)
EN
IN
GND
OUTPUT
FB/NC
1
2
3
4
5
250
V
DO
−Dropout Voltage −mV
TPS75833
DROPOUT VOLTAGE
vs
JUNCTION TEMPERATURE
I
O
= 3 A
V
O
= 3.3 V
∆
VO
−Change in Output Voltage −mV
TPS75815
LOAD TRANSIENT RESPONSE
150
100
50
0
−50
−100
−150
di
0.75 A
=
s
dt
200
V
O
= 1.5 V
C
O
= 100
µF
TO−263 (KTT) PACKAGE
(TOP VIEW)
EN
IN
GND
OUTPUT
FB/NC
1
2
3
4
5
100
50
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
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.
All other trademarks are the property of their respective owners.
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
I
O
−Output Current −A
150
TPS75801, TPS758A01
,
TPS75815, TPS75818
TPS75825, TPS75833
SLVS330F – JUNE 2001 – REVISED APRIL 2007
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric changes could cause the device not to meet its published
specifications.
ORDERING INFORMATION
(1)
PRODUCT
TPS758xxyyyz
or
TPS758A01yyyz
(2)
(1)
(2)
V
OUT
XX
is nominal output voltage (for example, 25 = 2.5V, 01 = Adjustable).
YYY
is package designator.
Z
is package quantity.
For the most current specification and package information, refer to the Package Option Addendum located at the end of this datasheet
or see the TI website at
www.ti.com.
TPS758A01 available in adjustable version only. See
TPS758A01 Reference Voltage
in
Electrical Characteristics
for different V
REF
range.
ABSOLUTE MAXIMUM RATINGS
Over operating junction temperature range (unless otherwise noted)
(1) (2)
TPS758xx
Input voltage range, V
IN
Voltage range at EN
Peak output current
Continuous total power dissipation
Output voltage, V
OUT
(OUT, FB)
Operating junction temperature range, T
J
Storage temperature range, T
STG
ESD rating, HBM
ESD rating, CDM
(1)
(2)
–0.3 to 6
–0.3 to 6
Internally limited
See
Dissipation Ratings Table
5.5
–40 to +150
–65 to +150
2
500
V
°C
°C
kV
V
UNIT
V
V
Stresses beyond those listed under
Absolute Maximum Ratings
may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability.
All voltage values are with respect to network terminal ground.
DISSIPATION RATINGS TABLE
PACKAGE
TO-220
TO-263
(1)
(2)
(3)
R
ΘJC
(°C/W)
2
2
R
ΘJA
(°C/W)
(1)
58.7
(2)
38.7
(3)
For both packages, the R
ΘJA
values were computed using a JEDEC High-K board (2S2P) with a 1-ounce internal copper plane and
ground plane. There was no air flow across the packages.
R
ΘJA
was computed assuming a vertical, free-standing TO-220 package with pins soldered to the board. There is no heatsink attached
to the package.
R
ΘJA
was computed assuming a horizontally-mounted TO-263 package with pins soldered to the board. There is no copper pad
underneath the package.
2
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TPS75801, TPS758A01
,
TPS75815, TPS75818
TPS75825, TPS75833
SLVS330F – JUNE 2001 – REVISED APRIL 2007
ELECTRICAL CHARACTERISTICS
Over recommended operating junction temperature range (T
J
= –40°C to +125°C), V
IN
= V
OUT(nom)
+ 1V, I
OUT
= 1mA,
V
EN
= V
IN
, C
OUT
= 100µF (unless otherwise noted). Typical values are at T
J
= +25°C.
PARAMETER
V
IN
V
REF
Input voltage
range
(1)
TPS75801
TPS758A01
V
REF
TPS75801
TPS758A01
V
OUT
+ 1V
≤
V
IN
≤
5.5V, 1mA
≤
I
OUT
≤
3A
V
OUT
+ 1V
≤
V
IN
≤
5.5V, 1mA
≤
I
OUT
≤
3A
V
OUT
+ 1V
≤
V
IN
< 5.5V
1mA
≤
I
OUT
≤
3A
(2)
TEST CONDITIONS
MIN
2.8
TYP
1.225
1.24
MAX
5.5
UNIT
V
V
V
Reference voltage
Output voltage range
5
+3
+3
0.04
0.15
150
300
14
200
3
1
62
35
0.1
V
%
%
%/V
%
mV
A
µA
µA
µA
dB
µV
RMS
V
V
OUT
∆V
OUT
%/∆V
IN
∆V
OUT
%/∆I
OUT
V
DO
I
CL
I
GND
I
SHDN
I
FB
PSRR
V
N
V
EN
(HI)
V
EN
(LO)
I
EN
(HI)
Accuracy
(1)
Line regulation
(1)
Load regulation
Dropout voltage
Output current limit
Ground pin current
–3
–3
V
IN
= 3.2V, I
OUT
= 3A
V
OUT
= 0V
1mA
≤
I
OUT
≤
3A
V
EN
= 0V
FB = 1.5V
f = 100Hz, V
IN
= 2.8V, V
OUT
= 1.5V, I
OUT
= 3A
BW = 300Hz to 50kHz, V
IN
= 2.8V, V
OUT
= 1.5V
2
–1
5.5
10
125
0.1
Shutdown current (I
GND
)
FB pin current
Power-supply rejection ratio
(ripple rejection)
Output noise voltage
Enable high (enabled)
Enable low (shutdown)
Enable pin current (enabled)
Output discharge transistor current
0.7
V
EN
= V
IN
V
EN
= 0V
T
J
= +25°C, V
OUT
= 1.5V
T
J
= +25°C, V
IN
rising
V
IN
falling
–40
–1
–1
10
2.2
100
+150
+125
0
25
2.75
1
1
V
µA
µA
mA
V
mV
°C
°C
UVLO
T
SD
T
J
(1)
(2)
Undervoltage lockout
Hysteresis
Thermal shutdown temperature
Operating junction temperature
Minimum V
IN
= V
OUT
+ V
DO
or 2.8V, whichever is greater.
V
IN
= V
OUT(nom)
– 0.1V. V
DO
is not measured for devices with V
OUT(nom)
< 2.9V because minimum V
IN
= 2.8V.
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3
TPS75801, TPS758A01
,
TPS75815, TPS75818
TPS75825, TPS75833
SLVS330F – JUNE 2001 – REVISED APRIL 2007
www.ti.com
FUNCTIONAL BLOCK DIAGRAMS
ADJUSTABLE VOLTAGE VERSION
IN
UVLO
Current
Sense
ILIM
GND
-
SHUTDOWN
+
FB
EN
UVLO
OUT
R
1
R
2
Thermal
Shutdown
V
REF
= 1.22 V
Bandgap
Reference
FIXED VOLTAGE VERSIONS
IN
UVLO
Current
Sense
ILIM
GND
-
SHUTDOWN
+
R
1
OUT
EN
UVLO
R
2
Thermal
Shutdown
V
REF
= 1.22 V
Bandgap
Reference
Table 1. TERMINAL FUNCTIONS
TPS758xx
NAME
EN
IN
GND
OUT
FB/NC
PIN NO.
1
2
3
4
5
DESCRIPTION
Enable input
Input supply
Ground
Regulated output voltage; see
Output Capacitor
section for output capacitor requirements.
Feedback voltage for adjustable device. Connect to GND or leave open for fixed V
OUT
devices.
4
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