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SGLS176A − AUGUST 2003 − REVISED MARCH 2007
D
Controlled Baseline
− One Assembly/Test Site, One Fabrication
Site
D
D
D
Ultralow 85 µA Typical Quiescent Current
Fast Transient Response
2% Tolerance Over Specified Conditions for
Fixed-Output Versions
D
D
D
D
D
D
D
Extended Temperature Performance of
−40°C to 125°C
Enhanced Diminishing Manufacturing
Sources (DMS) Support
D
20-Pin TSSOP PowerPAD (PWP) Package
Thermal Shutdown Protection
D
Enhanced Product Change Notification
PWP PACKAGE
(TOP VIEW)
†
Qualification Pedigree
Open Drain Power Good
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
GND/HSINK
GND/HSINK
GND/HSINK
NC
GND/HSINK
500-mA Low-Dropout Voltage Regulator
GND
Available in 1.5-V, 1.8-V, 2.5-V, 2.8-V, 3.3-V
Fixed Output and Adjustable Versions
NC
NC
EN
PG
D
Dropout Voltage to 169 mV (Typ) at 500 mA
(TPS77633)
IN
IN
FB/NC
OUT
†
Component qualification in accordance with JEDEC and industry
standards to ensure reliable operation over an extended
temperature range. This includes, but is not limited to, Highly
Accelerated Stress Test (HAST) or biased 85/85, temperature
cycle, autoclave or unbiased HAST, electromigration, bond
intermetallic life, and mold compound life. Such qualification
testing should not be viewed as justifying use of this component
beyond specified performance and environmental limits.
NC
OUT
GND/HSINK
GND/HSINK
GND/HSINK
GND/HSINK
NC − No internal connection
description
The TPS776xx devices are designed to have a fast transient response and be stable with a 10-µF low ESR
capacitors. This combination provides high performance at a reasonable cost.
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 169 mV at an
output current of 500 mA for the TPS77633) 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 85 µA over the full range of output current, 0 mA to 500 mA). These two key specifications yield a significant
improvement in operating life for battery-powered systems. 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 1 µA at T = 25°C.
J
Power good (PG) of the TPS776xx is an active high output, which can be used to implement a power-on reset or
a low-battery indicator.
The TPS776xx are offered in 1.5-V, 1.8-V, 2.5-V, 2.8 V, and 3.3-V fixed-voltage versions and in an adjustable version
(programmable over the range of 1.2 V to 5.5 V for TPS77601 option). Output voltage tolerance is specified as a
maximum of 2% over line, load, and temperature ranges. The TPS776xx family is available in 20 pin TSSOP
package.
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.
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Copyright 2007, Texas Instruments Incorporated
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ꢣꢧ ꢤ ꢣꢝ ꢞꢱ ꢠꢟ ꢢ ꢪꢪ ꢨꢢ ꢡ ꢢ ꢘ ꢧ ꢣ ꢧ ꢡ ꢤ ꢬ
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1
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