LP3878SD-ADJ/NOPB National Semiconductor, LP3878SD-ADJ/NOPB Datasheet

IC VREG 800MA ADJ 8-LLP

LP3878SD-ADJ/NOPB

Manufacturer Part Number
LP3878SD-ADJ/NOPB
Description
IC VREG 800MA ADJ 8-LLP
Manufacturer
National Semiconductor
Type
Linearr
Datasheet

Specifications of LP3878SD-ADJ/NOPB

Regulator Topology
Positive Adjustable
Voltage - Output
1 ~ 5.5 V
Voltage - Input
2.5 ~ 16 V
Voltage - Dropout (typical)
0.475V @ 800mA
Number Of Regulators
1
Current - Output
800mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-LLP
Package
8LLP EP
Function
LDO
Number Of Outputs
1
Input Voltage Range
16 to 2.5 V
Output Voltage
1 to 5.5 V
Maximum Output Current
1.2(Typ) A
Output Type
Adjustable
Accuracy
±1 %
Typical Dropout Voltage @ Current
0.001@100uA|0.15@200mA|0.475@800mA V
Polarity
Positive
For Use With
LP3878-ADJEVAL - BOARD EVALUATION LP3878-ADJ
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Other names
LP3878SD-ADJ
LP3878SD-ADJNOPB
LP3878SD-ADJNOPBTR
LP3878SD-ADJNOPBTR
LP3878SD-ADJTR

Available stocks

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Part Number:
LP3878SD-ADJ/NOPB
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Quantity:
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© 2009 National Semiconductor Corporation
Micropower 800mA Low Noise "Ceramic Stable"
Adjustable Voltage Regulator for 1V to 5V Applications
General Description
The LP3878-ADJ is an 800 mA adjustable output voltage reg-
ulator designed to provide high performance and low noise in
applications requiring output voltages as low as 1.0V.
Using an optimized VIP
the LP3878-ADJ delivers superior performance:
Ground Pin Current: Typically 5.5 mA @ 800 mA load, and
180 µA @ 100 µA load.
Low Power Shutdown: The LP3878-ADJ draws less than 10
μA quiescent current when shutdown pin is pulled low.
Precision Output: Guaranteed output voltage accuracy is
1% at room temperature.
Low Noise: Broadband output noise is only 18 μV (typical)
with 10 nF bypass capacitor.
Basic Application Circuit
*Capacitance values shown are minimum required to assure stability. Larger output capacitor provides improved dynamic response. Output capacitor must
meet ESR requirements (see Application Information).
**The Shutdown pin must be actively terminated (see Application Information). Tie to INPUT (Pin 4) if not used.
VIP
®
is a registered trademark of National Semiconductor Corporation.
®
(Vertically Integrated PNP) process,
201209
LP3878-ADJ
Features
Applications
1.0V to 5.5V output
Designed for use with low ESR ceramic capacitors
Very low output noise
8 Lead PSOP and LLP surface mount package
<10 μA quiescent current in shutdown
Low ground pin current at all loads
Over-temperature/over-current protection
-40°C to +125°C operating junction temperature range
ASIC Power Supplies In:
DSP and FPGA Power Supplies
SMPS Post-Regulator
Medical Instrumentation
- Desktops, Notebooks and Graphic Cards
- Set Top Boxes, Printers and Copiers
www.national.com
20120903
June 1, 2009

Related parts for LP3878SD-ADJ/NOPB

LP3878SD-ADJ/NOPB Summary of contents

Page 1

... Larger output capacitor provides improved dynamic response. Output capacitor must meet ESR requirements (see Application Information). **The Shutdown pin must be actively terminated (see Application Information). Tie to INPUT (Pin 4) if not used. VIP ® registered trademark of National Semiconductor Corporation. © 2009 National Semiconductor Corporation LP3878-ADJ Features ■ ...

Page 2

... LP3878MR-ADJ STD LP3878MRX-ADJ STD LP3878SD-ADJ STD LP3878SDX-ADJ The capacitor connected between BYPASS and GROUND lowers output noise voltage level and is required for loop stability. DO NOT CONNECT. This pin is used for post package test and must be left floating. Device ground. Input source voltage. ...

Page 3

... 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 Temperature (Soldering, 5 seconds) ESD Rating (Note 2) Shutdown Pin Electrical Characteristics Limits in standard typeface are for T J Limits are guaranteed through design, testing, or correlation ...

Page 4

Symbol Parameter SHUTDOWN INPUT V S/D Input Voltage S/D I S/D Input Current S/D Note 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 ...

Page 5

Typical Performance Characteristics C = 4.7 µ µ 2V OUT S Temperature GND GND Load Minimum Unless otherwise specified nF, T ...

Page 6

Minimum Ripple Rejection Output Noise Spectral Density www.national.com OUT 20120953 20120958 20120948 6 Ripple Rejection 20120954 Output Noise Spectral Density 20120947 Line Transient Response 20120931 ...

Page 7

Line Transient Response 20120933 Line Transient Response 20120935 Line Transient Response 20120934 Line Transient Response Line Transient Response Line Transient Response 7 20120932 20120936 20120937 www.national.com ...

Page 8

Line Transient Response Line Transient Response Load Transient Response www.national.com Line Transient Response 20120939 Line Transient Response 20120942 Load Transient Response 20120945 8 20120940 20120941 20120943 ...

Page 9

Load Transient Response 20120946 Turn-On Characteristics 20120955 Load Transient Response Turn-Off Characteristics 9 20120944 20120956 www.national.com ...

Page 10

Block Diagram Application Information PACKAGE INFORMATION The LP3878-ADJ is offered in the 8 lead PSOP or LLP surface mount packages to allow for increased power dissipation compared to the SO-8 and Mini SO-8. For details on thermal performance as well ...

Page 11

Ohms. If these are used as output capacitors for the LP3878- ADJ, the regulator stability requirements are satisfied important to remember that capacitor tolerance and vari- ation with temperature must be taken into consideration when selecting an output ...

Page 12

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 8 Lead LLP Surface Mount PackagePackage NS Package Number SDC08A 8-Lead PSOP Package (PSOP-8) NS Package Number MRA08A 12 ...

Page 13

Notes 13 www.national.com ...

Page 14

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: 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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