LP3962EP Datasheet, PDF (1/20 Pages) National Semiconductor (TI) – 1.5A Fast Ultra Low Dropout Linear Regulators

January 2005
LP3962EP/LP3965EP
1.5A Fast Ultra Low Dropout Linear Regulators
General Description
The LP3962EP/LP3965EP series of fast ultra low-dropout
linear regulators operate from a +2.5V to +7.0V input supply.
Wide range of preset output voltage options are available.
These ultra low dropout linear regulators respond very fast to
step changes in load which makes them suitable for low
voltage microprocessor applications. The LP3962EP/
LP3965EP are developed on a CMOS process which allows
low quiescent current operation independent of output load
current. This CMOS process also allows the LP3962EP/
LP3965EP to operate under extremely low dropout condi-
tions.
Dropout Voltage: Ultra low dropout voltage; typically 38mV
at 150mA load current and 380mV at 1.5A load current.
Ground Pin Current: Typically 5mA at 1.5A load current.
Shutdown Mode: Typically 15µA quiescent current when
the shutdown pin is pulled low.
Error Flag: Error flag goes low when the output voltage
drops 10% below nominal value (for LP3962EP).
SENSE: Sense pin improves regulation at remote loads.
(For LP3965EP)
Precision Output Voltage: Multiple output voltage options
are available ranging from 1.2V to 5.0V and adjustable
(LP3965EP), with a guaranteed accuracy of ±1.5% at room
temperature, and ±3.0% over all conditions (varying line,
load, and temperature).
ENHANCED PLASTIC
• Extended Temperature Performance of −40˚C to +125˚C
• Baseline Control - Single Fab & Assembly Site
• Process Change Notification (PCN)
• Qualification & Reliability Data
• Solder (PbSn) Lead Finish is standard
• Enhanced Diminishing Manufacturing Sources (DMS)
Support
Features
n Ultra low dropout voltage
n Low ground pin current
n Load regulation of 0.04%
n 15µA quiescent current in shutdown mode
n Guaranteed output current of 1.5A DC
n Available in SOT-223,TO-263 and TO-220 packages
n Output voltage accuracy ± 1.5%
n Error flag indicates output status (LP3962EP)
n Sense option improves better load regulation
(LP3965EP)
n Extremely low output capacitor requirements
n Overtemperature/overcurrent protection
Applications
n Microprocessor power supplies
n GTL, GTL+, BTL, and SSTL bus terminators
n Power supplies for DSPs
n SCSI terminator
n Post regulators
n High efficiency linear regulators
n Selected Military Applications
n Selected Avionics Applications
Ordering Information
PART NUMBER
LP3962ES-2.5EP
LP3965ES-2.5EP
LP3965ES-ADJEP
(Notes 1, 2)
VID PART NUMBER
V62/04751-01
V62/04751-02
V62/04751-03
TBD
NS PACKAGE NUMBER (Note 3)
TS5B
TS5B
TS5B
TBD
Note 1: For the following (Enhanced Plastic) version, check for availability: LP3962EMP-1.8EP, LP3962EMP2.5EP, LP3962EMP-3.3EP, LP3962EMP-
5.0EP, LP3962EMPX1.8EP, LP3962EMPX2.5EP, LP3962EMPX3.3EP, LP3962EMPX5.0EP, LP3962ET-1.8EP, LP3962ET-2.5EP, LP3962ET-3.3EP,
LP3962ET-5.0EP, LP3962ES-1.8EP, LP3962EX-3.3EP, LP3962ES-5.0EP, LP3962ESX-1.8EP, LP3962ESX-2.5EP, LP3962ESX-3.3EP, LP3962ESX-5.0EP,
LP3965EMP-1.8EP, LP3965EMP-2.5EP, LP3965EMP-3.3EP, LP3965EMP-5.0EP, LP3965EMP-ADJEP, LP3965EMPX1.8EP, LP3965EMPX2.5EP,
LP3965EMPX3.3EP, LP3965EMPX5.0EP, LP3965EMPXADJEP, LP3965ET-1.8EP, LP3965ET-2.5EP, LP3965ET-3.3EP, LP3965ET-5.0EP, LP3965ET-
ADJEP, LP3965ES-1.8EP, LP3965ES-3.3EP, LP3965ES-5.0EP, LP3965ESX-1.8EP, LP3965ESX-2.5EP, LP3965ESX-3.3EP, LP3965ESX-5.0EP,
LP3965ESX-ADJEP. Parts listed with an "X" are provided in Tape & Reel and parts without an "X" are in Rails.
Note 2: FOR ADDITIONAL ORDERING AND PRODUCT INFORMATION, PLEASE VISIT THE ENHANCED PLASTIC WEB SITE AT: www.national.com/
mil
Note 3: Refer to package details under Physical Dimensions
© 2005 National Semiconductor Corporation DS201147
www.national.com