LP2992AIM5-3.3 National Semiconductor, LP2992AIM5-3.3 Datasheet

IC, LDO VOLT REG, 3.3V, 250mA, 5-SOT-23

LP2992AIM5-3.3

Manufacturer Part Number
LP2992AIM5-3.3
Description
IC, LDO VOLT REG, 3.3V, 250mA, 5-SOT-23
Manufacturer
National Semiconductor
Datasheet

Specifications of LP2992AIM5-3.3

Primary Input Voltage
16V
Output Voltage Fixed
3.3V
Dropout Voltage Vdo
450mV
No. Of Pins
5
Output Current
250mA
Operating Temperature Range
-40°C To +125°C
Termination Type
SMD
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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© 2010 National Semiconductor Corporation
Micropower 250 mA Low-Noise Ultra Low-Dropout
Regulator in SOT-23 and LLP Packages Designed for Use
with Very Low ESR Output Capacitors
Designed for Use with Very Low ESR Output Capacitors
General Description
The LP2992 is a 250 mA, fixed-output voltage regulator de-
signed to provide ultra low-dropout and low noise in battery
powered applications.
Using an optimized VIP
the LP2992 delivers unequalled performance in all specifica-
tions critical to battery-powered designs:
Dropout Voltage: Typically 450 mV @ 250 mA load, and
5 mV @ 1 mA load.
Ground Pin Current: Typically 1500 µA @ 250 mA load, and
75 µA @ 1 mA load.
Enhanced Stability: The LP2992 is stable with output ca-
pacitor ESR as low as 5 mΩ, which allows the use of ceramic
capacitors on the output.
Sleep Mode: Less than 1 µA quiescent current when ON/OFF
pin is pulled low.
Smallest Possible Size: SOT-23 and LLP packages use ab-
solute minimum board space.
Precision Output: 1% tolerance output voltages available (A
grade).
Low Noise: By adding a 10 nF bypass capacitor, output noise
can be reduced to 30 µV (typical).
Multiple voltage options, from 1.5V to 5.0V, are available as
standard products. Consult factory for custom voltages.
Block Diagram
VIP
®
is a registered trademark of National Semiconductor Corporation.
®
(Vertically Integrated PNP) process,
200294
LP2992
Features
Applications
Ultra low dropout voltage
Guaranteed 250 mA output current
Smallest possible size (SOT-23, LLP package)
Requires minimum external components
Stable with low-ESR output capacitor
<1 µA quiescent current when shut down
Low ground pin current at all loads
Output voltage accuracy 1% (A Grade)
High peak current capability
Wide supply voltage range (16V max)
Low Z
Overtemperature/overcurrent protection
−40°C to +125°C junction temperature range
Custom voltages available
Cellular Phone
Palmtop/Laptop Computer
Personal Digital Assistant (PDA)
Camcorder, Personal Stereo, Camera
OUT
: 0.3Ω typical (10 Hz to 1 MHz)
20029401
www.national.com
July 22, 2010

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LP2992AIM5-3.3 Summary of contents

Page 1

... Multiple voltage options, from 1.5V to 5.0V, are available as standard products. Consult factory for custom voltages. Block Diagram VIP ® registered trademark of National Semiconductor Corporation. © 2010 National Semiconductor Corporation LP2992 Features ■ Ultra low dropout voltage ■ ...

Page 2

Basic Application Circuit    *ON/OFF input must be actively terminated. Tie to V   **Minimum capacitance is shown to ensure stability (may be increased without limit). Ceramic capacitor required for output (see Application Hints). ***Reduces output noise (may be omitted ...

Page 3

... LP2992IM5-1.8 LFCB LP2992AIM5X-2.5 LFDA LP2992AIM5-2.5 LFDA LP2992IM5X-2.5 LFDB LP2992IM5-2.5 LFDB LP2992AIM5X-3.0 LF8A LP2992AIM5-3.0 LF8A LP2992IM5X-3.0 LF8B LP2992IM5-3.0 LF8B LP2992AIM5X-3.3 LFEA LP2992AIM5-3.3 LFEA LP2992IM5X-3.3 LFEB LP2992IM5-3.3 LFEB LP2992AIM5X-5.0 LFFA LP2992AIM5-5.0 LFFA LP2992IM5X-5.0 LFFB LP2992IM5-5.0 LFFB LP2992AILDX-1.5 L011A LP2992AILD-1.5 L011A LP2992ILDX-1.5 L011AB LP2992ILD-1.5 L011AB LP2992AILDX-1 ...

Page 4

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range Operating Junction Temperature Range Lead Temp. (Soldering, 5 sec.) ESD Rating (Note 2) Electrical Characteristics Limits in standard typeface are for T ...

Page 5

Symbol Parameter I ON/OFF Input Current ON/OFF e Output Noise n Voltage (RMS) Ripple Rejection I (SC) Short Circuit Current O I (PK) Peak Output Current O Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the component ...

Page 6

Typical Performance Characteristics (NOM) + 25°C, ON/OFF pin is tied Temperature OUT Short-Circuit Current Ripple Rejection www.national.com Unless otherwise specified Short-Circuit Current 20029408 Short Circuit Current vs Output Voltage 20029410 ...

Page 7

Ripple Rejection 20029415 Ripple Rejection 20029417 Ripple Rejection 20029419 Ripple Rejection Ripple Rejection Ripple Rejection 7 20029416 20029418 20029423 www.national.com ...

Page 8

Ripple Rejection Output Impedance vs Frequency Output Noise Density www.national.com Output Impedance vs Frequency 20029422 Output Noise Density 20029421 GND Pin vs Load Current 20029425 8 20029420 20029424 20029426 ...

Page 9

Dropout Voltage vs Temperature 20029427 Ignd vs Load and Temperature 20029430 Load Transient Response 20029433 Input Current vs Pin Instantaneous Short Circuit Current Load Transient Response 9 20029429 20029431 20029434 www.national.com ...

Page 10

Load Transient Response Line Transient Response Line Transient Response www.national.com Line Transient Response 20029447 Line Transient Response 20029436 Turn-On Time 20029438 10 20029435 20029437 20029439 ...

Page 11

Turn-On Time 20029440 Turn-On Time 20029442 11 Turn-On Time 20029441 www.national.com ...

Page 12

Application Hints EXTERNAL CAPACITORS Like any low-dropout regulator, the LP2992 requires external capacitors for regulator stability. These capacitors must be correctly selected for good performance. Input Capacitor An input capacitor whose capacitance is between the LP2992 input and ground (the ...

Page 13

... Ratings). to keep the regulator LLP MOUNTING The LLP package requires specific mounting techniques which are detailed in National Semiconductor Application Note # 1187. Referring to the section PCB Design Recom- mendations, it should be noted that the pad style which . To prevent mis- should be used with the LLP package is the NSMD (non-sol- der mask defined) type ...

Page 14

Physical Dimensions For Order Numbers, refer to www.national.com inches (millimeters) unless otherwise noted 5-Lead Small Outline Package (M5) NS Package Number MF05A Table 1 in the “Ordering Information” section of this document. 6-Lead LLP Package (LD) NS Package Number LDE06A ...

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15 www.national.com ...

Page 16

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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