LP3992IMF-1.5 National Semiconductor, LP3992IMF-1.5 Datasheet

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LP3992IMF-1.5

Manufacturer Part Number
LP3992IMF-1.5
Description
IC, V REG 30MA, SHUTDOWN, SMD, 3992
Manufacturer
National Semiconductor
Datasheet

Specifications of LP3992IMF-1.5

Primary Input Voltage
2.5V
Output Voltage
1.5V
Dropout Voltage Vdo
400mV
No. Of Pins
5
Output Current
30mA
Voltage Regulator Case Style
SOT-23
Operating Temperature Range
-40°C To +125°C
Output Voltage Fixed
1.5V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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© 2002 National Semiconductor Corporation
LP3992
Micropower 1.5V CMOS Voltage Regulator with
Shutdown Control
General Description
The LP3992 regulator is designed to meet the requirements
of portable, battery-powered systems providing an accurate
output voltage, low noise, and low quiescent current. Battery
life will be prolonged by the ability of the LP3992 to provide
a 1.5V output from the low input voltage of 1.9V. Additionally,
when switched to a shutdown mode via a logic signal at the
shutdown pin, the power consumption is reduced to virtually
zero. The LP3992 also features short-circuit and thermal-
shutdown protection.
The LP3992 is designed to be stable with space saving
ceramic capacitors as small as 1.0µF.
The device is available in an SOT23-5 package. Perfor-
mance is specified for a -40˚C to 125˚C temperature range.
For output voltages other than 1.5V and alternative package
options, please contact your local NSC sales office.
Typical Application Circuit
DS200412
Key Specifications
n 1.9 to 5.2V input range
n Accurate 1.5V
n Less than 1.5µA quiescent current in shutdown
n Stable with a 1µF output capacitor
n Guaranteed 30mA output current
n Low output voltage Noise; 300µV
Features
n Operation from a low input voltage; 1.9V
n Low quiescent current; 29µA typical
n Stable with a ceramic capacitor
n Logic controlled shutdown
n Fast turn ON and OFF
n Thermal-overload and short circuit protection
n 5 pin package, SOT23
n -40˚C to +125˚C junction temperature range
±
0.09V output voltage
20041201
RMS
December 2002
www.national.com

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LP3992IMF-1.5 Summary of contents

Page 1

... For output voltages other than 1.5V and alternative package options, please contact your local NSC sales office. Typical Application Circuit © 2002 National Semiconductor Corporation Key Specifications n 1.9 to 5.2V input range n Accurate 1.5V n Less than 1.5µ ...

Page 2

... Voltage output. Connect this output to the load circuit. 20041202 SOT23 - 5 Package (MF) Top View See NS package number MF05A LP3992 Supplied as 1000 LP3992 Supplied as 3000 Units, Tape and Reel Units, Tape and Reel LP3992IMF-1.5 LP3992IMFX-1.5 LP3992IMF-1.5/E4000193 LP3992IMFX-1.5/S4000170 2 OUT Package Marking ...

Page 3

... Absolute Maximum Ratings (Notes Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage Output Voltage Shutdown Input Voltage Junction Temperature Lead Temp. (Note 3) Storage Temperature Electrical Characteristics Unless otherwise noted 1.15, V ...

Page 4

... Electrical Characteristics Note 3: The package can pass MSL (moisture sensitivity level 260˚C. Additional information on lead temperature can be obtained from National Semiconductor web pages http://www.national.com/packaging/general.html http://www.national.com/packaging/plastic.html Note 4: The Maximum power dissipation of the device is dependant on the maximum allowable junction temperature for the device and the ambient temperature. ...

Page 5

FIGURE 2. Figure 2. Line Transient Input Test Signal. Typical Performance Characteristics 2.8V 25˚C, Shutdown pin is tied Output Voltage Change vs Temperature FIGURE 3. Figure 3. PSRR Input Test Signal. Unless ...

Page 6

Typical Performance Characteristics. = 2.8V 25˚C, Shutdown pin is tied Ground Current vs V Short Circuit Current Line Transient Response www.national.com Unless otherwise specified (Continued 25˚C IN 20041209 20041211 20041213 6 ...

Page 7

Typical Performance Characteristics. = 2.8V 25˚C, Shutdown pin is tied Turn ON/OFF Timing Ripple Rejection Load Transient Response Unless otherwise specified (Continued) IN 20041215 Load Transient Response 20041217 20041219 ...

Page 8

Application Hints EXTERNAL CAPACITORS In common with most regulators, the LP3992 requires exter- nal capacitors for regulator stability. The LP3992 is specifi- cally designed for portable applications requiring minimum board space and smallest components. These capacitors must be correctly selected ...

Page 9

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

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