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TPS76850QPWP Datasheet Preview

TPS76850QPWP Datasheet

1-A Low-Dropout Linear Regulator

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TPS768xxQ
www.ti.com
SLVS211L – JUNE 1999 – REVISED JANUARY 2006
FAST TRANSIENT RESPONSE, 1-A LOW-DROPOUT VOLTAGE REGULATORS
FEATURES
Input Voltage Range: 2.7 V to 10 V
Low-Dropout Voltage: 230 mV typical at 1 A
(TPS76850)
2% Tolerance Over Specified Conditions for
Fixed-Output Versions
Open Drain Power Good (See TPS767xx for
Power-On Reset With 200-ms Delay Option)
Ultralow 85 µA Typical Quiescent Current
Available in 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V,
3.0-V, 3.3-V, 5.0-V Fixed Output and
Adjustable (1.2 V to 5.5 V) Versions
Fast Transient Response
Thermal Shutdown Protection
SOIC-8 (D) and TSSOP-20 (PWP) Package
D PACKAGE
(Top View)
GND 1
EN 2
IN 3
IN 4
8 PG
7 FB/NC
6 OUT
5 OUT
PWP PACKAGE
(Top View)
GND/HSINK 1
GND/HSINK 2
GND 3
NC 4
EN 5
IN 6
IN 7
NC 8
GND/HSINK 9
GND/HSINK 10
20 GND/HSINK
19 GND/HSINK
18 NC
17 NC
16 PG
15 FB/NC
14 OUT
13 OUT
12 GND/HSINK
11 GND/HSINK
DESCRIPTION
This device is designed to have a fast transient
response and be stable with 10 µF capacitors. This
combination provides high performance at a
reasonable cost.
Since the PMOS device behaves as a low-value
resistor, the dropout voltage is very low (typically
230 mV at an output current of 1 A for the TPS76850)
and is directly proportional to the output current.
Additionally, because 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
1 A). These two key specifications yield a significant
improvement in operating life for battery-powered
systems. This LDO family also features a shutdown
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.
Power good (PG) is an active high output, which can
be used to implement a power-on reset or a
low-battery indicator.
VI
0.1 µF
TPS768xx
6
IN
7
IN
5
EN
16
PG
14
OUT
13
OUT
GND
3
PG
VO
Co
+
10 µF
Figure 1. Typical Application Configuration
(For Fixed Output Options)
NC = No Internal Connection
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.
All 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 © 1999–2006, Texas Instruments Incorporated




etcTI

TPS76850QPWP Datasheet Preview

TPS76850QPWP Datasheet

1-A Low-Dropout Linear Regulator

No Preview Available !

TPS768xxQ
SLVS211L – JUNE 1999 – REVISED JANUARY 2006
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
TPS768xxQyyyz
VOUT (2)
XX is nominal output voltage (for example, 28 = 2.8 V, 285 = 2.85 V, 01 = Adjustable).
YYY is package designator.
Z is package quantity.
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
(2) Custom output voltages are available; minimum order quantities may apply. Contact factory for details and availability.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted) (1)
Input voltage range, VI(2)
Voltage range at EN
Maximum PG voltage
Peak output current
Continuous total power dissipation
Output voltage, VO (OUT, FB)
Operating junction temperature range, TJ
Storage temperature range, Tstg
ESD rating, HBM
VALUE
–0.3 V to 13.5 V
–0.3 V to VI + 0.3 V
16.5 V
Internally limited
See Dissipation Rating Table
7V
–40°C to +125°C
–65°C to +150°C
2 kV
(1) 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 under Recommended Operating
Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to network terminal ground.
DISSIPATION RATING TABLE—FREE-AIR TEMPERATURES
PACKAGE
D
PWP (1)
AIR FLOW
(CFM)
0
250
0
250
TA < +25°C
POWER RATING
568.18 mW
904.15 mW
3.1 W
4.1 W
DERATING FACTOR
ABOVE TA = +25°C
5.6818 mW/°C
9.0415 mW/°C
30.7 mW/°C
41.2 mW/°C
TA = +70°C
POWER RATING
312.5 mW
497.28 mW
1.7 W
2.3 W
TA = +85°C
POWER RATING
227.27 mW
361.66 mW
1.2 W
1.6 W
(1) This parameter is measured with the recommended copper heat sink pattern on a 4-layer, 5-in × 5-in PCB, 1 oz. copper, 4-in × 4-in
coverage (4 in2).
RECOMMENDED OPERATING CONDITIONS
Input voltage, VI(1)
Output voltage range, VO
Output current, IO(2)
Operating junction temperature, TJ(2)
MIN
MAX
UNIT
2.7
10
V
1.2
5.5
V
0
1.0
A
–40
+125
°C
(1) Minimum VIN = VOUT + VDO or 2.7 V, whichever is greater.
(2) Continuous current and operating junction temperature are limited by internal protection circuitry, but it is not recommended that the
device operate under conditions beyond those specified in this table for extended periods of time.
2
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Part Number TPS76850QPWP
Description 1-A Low-Dropout Linear Regulator
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