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LP2960 Datasheet Preview

LP2960 Datasheet

Adjustable Micropower 0.5A Low-Dropout Regulators

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LP2960
www.ti.com
SNVS112C – APRIL 1999 – REVISED APRIL 2013
LP2960 Adjustable Micropower 0.5A Low-Dropout Regulators
Check for Samples: LP2960
FEATURES
1
2 Output Voltage Adjusts from 1.23V–29V
• Ensured 500 mA Output Current
• 5V and 3.3V Versions Available
• 16-Pin SO Package
• Low Dropout Voltage
• Low Quiescent Current
• Tight Line and Load Regulation
• Low Temperature Coefficient
• Current Limiting and Thermal Protection
• Logic-Level Shutdown
• Can be Wired for Snap-ON and Snap-OFF
• Reverse Battery Protection
APPLICATIONS
• High-Efficiency Linear Regulator
• Regulator with Under-Voltage Shutdown
• Low Dropout Battery-Powered Regulator
• Cellular Telephones
DESCRIPTION
The LP2960 is a micropower voltage regulator with
very low dropout voltage (12 mV typical at 1 mA load
and 470 mV typical at 500 mA load) and very low
quiescent current (450 μA typical at 1 mA load).
The LP2960 is ideally suited for battery-powered
systems: the quiescent current increases only slightly
at dropout, which prolongs battery life.
The LP2960 retains all the desirable characteristics of
the LP2953, and offers increased output current.
The error flag goes low any time the output drops
more than 5% out of regulation.
Reverse battery protection is provided.
The LP2960 requires only 10 μF of output
capacitance for stability (5V version).
The internal voltage reference is made available for
external use, providing a low-T.C. reference with very
good regulation characteristics.
The part is available in a 16-pin surface mount
(SOIC) package.
Block Diagram
1
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.
2
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 © 1999–2013, Texas Instruments Incorporated




etcTI

LP2960 Datasheet Preview

LP2960 Datasheet

Adjustable Micropower 0.5A Low-Dropout Regulators

No Preview Available !

LP2960
SNVS112C – APRIL 1999 – REVISED APRIL 2013
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings(1)
Storage Temperature Range
Operating Junction Temperature Range
Lead Temperature (Soldering, 5 sec.)
Power Dissipation(2)
Input Supply Voltage
Feedback Input Voltage(3)
Comparator Input Voltage(4)
Comparator Output Voltage(4)
ESD Rating(5)
LP2960AI/LP2960I
65°C to +150°C
40°C to +125°C
260°C
Internally Limited
20V to +30V
0.3V to +5V
0.3V to +30V
0.3V to +30V
1.5 kV
(1) Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply
when operating the device outside of its rated operating conditions.
(2) The maximum allowable power dissipation is a function of the maximum junction temperature, TJ (max), the junction-to-ambient thermal
resistance, θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated
using:
Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator
will go into thermal shutdown. See Application Hints for additional information on heatsinking and thermal resistance.
(3) When used in dual-supply systems where the regulator load is returned to a negative supply, the output voltage must be diode-clamped
to ground.
(4) May exceed the input supply voltage.
(5) Human Body Model, 200 pF discharged through 1.5 kΩ.
Electrical Characteristics
Limits in standard typeface are for TJ = 25°C, and limits in boldface type apply over the full operating temperature range.
Unless otherwise specified: CIN = 4.7 μF, VIN = VO(NOM) + 1V, IL = 1 mA, COUT = 10 μF for 5V parts or COUT = 22 μF for 3.3V
parts, Feedback pin is tied to VTAP pin, Output pin is tied to Sense pin, VS/D = 2V.
Symbol
Parameter
Conditions
LP2960AI (1)
Typ
Min
Max
LP2960I (1)
Min
Max
Units
VO
Output Voltage
(5V Versions)
Output Voltage
(3.3 Versions)
1 mA IL 500 mA
1 mA IL 500 mA
5.0
4.962
4.930
5.038
5.070
4.925
4.880
5.075
5.120
V
3.3
3.275
3.254
3.325
3.346
3.250
3.221
3.350
3.379
Output Voltage
Temperature Coefficient
See (2)
20
130
160 ppm/°C
Output Voltage
Line Regulation
VIN = [VO(NOM) + 1V] to 30V
0.06
0.2
0.5
0.4
0.8
%
Output Voltage
Load Regulation
See (3)
0.08
0.16
0.30
0.20
0.40
%
(1) All room temperature limits are 100% production tested. All limits at temperature extremes are ensured via correlation using standard
Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level.
(2) Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
(3) Output voltage load regulation is measured at constant junction temperature using low duty cycle pulse testing. Two separate tests are
performed, one for the load current range of 100 μA to 1 mA and one for the 1 mA to 500 mA range. Changes in output voltage due to
heating effects are covered by the thermal regulation specification.
2
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Copyright © 1999–2013, Texas Instruments Incorporated
Product Folder Links: LP2960


Part Number LP2960
Description Adjustable Micropower 0.5A Low-Dropout Regulators
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