LP3990MF-2.8/NOPB National Semiconductor, LP3990MF-2.8/NOPB Datasheet

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LP3990MF-2.8/NOPB

Manufacturer Part Number
LP3990MF-2.8/NOPB
Description
IC REG LDO 150MA 2.8V SOT23-5
Manufacturer
National Semiconductor
Datasheet

Specifications of LP3990MF-2.8/NOPB

Regulator Topology
Positive Fixed
Voltage - Output
2.8V
Voltage - Input
Up to 6V
Voltage - Dropout (typical)
0.12V @ 150mA
Number Of Regulators
1
Current - Output
150mA (Min)
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Other names
*LP3990MF-2.8
LP3990MF-2.8
LP3990MF-2.8NOPB
LP3990MF-2.8NOPBTR
LP3990MF-2.8NOPBTR
LP3990MF-2.8TR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LP3990MF-2.8/NOPB
Manufacturer:
NS/国半
Quantity:
20 000
© 2008 National Semiconductor Corporation
LP3990
150mA Linear Voltage Regulator for Digital Applications
General Description
The LP3990 regulator is designed to meet the requirements
of portable, battery-powered systems providing an accurate
output voltage, low noise, and low quiescent current. The
LP3990 will provide a 0.8V output from the low input voltage
of 2V at up to 150mA load current. When switched into shut-
down mode via a logic signal at the enable pin, the power
consumption is reduced to virtually zero.
The LP3990 is designed to be stable with space saving ce-
ramic capacitors as small as 1.0µF.
Performance is specified for a -40°C to 125°C junction tem-
perature range.
For output voltages other than 0.8V, 1.2, 1.35V, 1.5V, 1.8V,
2.5V, 2.8V, or 3.3V please contact your local NSC sales of-
fice.
Features
Typical Application Circuit
1% Voltage Accuracy at Room Temperature
Stable with Ceramic Capacitor
Logic Controlled Enable
No Noise Bypass Capacitor Required
Thermal-Overload and Short-Circuit Protection
200768
Key Specifications
Package
All available in Lead Free option.
For other package options contact your NSC sales office.
Applications
4 Pin micro SMD
6 pin LLP (SOT23 footprint)
SOT23 - 5
Input Voltage Range
Output Voltage Range
Output Current
Output Stable - Capacitors
Virtually Zero I
Very Low I
Low Output Noise
PSRR
Fast Start Up
Cellular Handsets
Hand-Held Information Appliances
Q
(Enabled)
Q
(Disabled)
20076801
October 16, 2006
1 mm x 1.3 mm
www.national.com
55dB at 1kHz
2.0 to 6.0V
0.8 to 3.3V
150uV
150mA
<10nA
105us
1.0uF
43uA
RMS

Related parts for LP3990MF-2.8/NOPB

LP3990MF-2.8/NOPB Summary of contents

Page 1

... Stable with Ceramic Capacitor ■ Logic Controlled Enable ■ No Noise Bypass Capacitor Required ■ Thermal-Overload and Short-Circuit Protection Typical Application Circuit © 2008 National Semiconductor Corporation Key Specifications ■ Input Voltage Range ■ Output Voltage Range ■ Output Current ■ ...

Page 2

Pin Descriptions Pin No LLP micro SOT23-5 SMD Pad Connection Diagrams www.national.com Packages Symbol Name and Function V Enable Input; Enables the Regulator when EN ...

Page 3

SOT23 - 5 Package (MF) 20076808 See NS package number MF05A 3 www.national.com ...

Page 4

... LP3990TLX-1.35 LP3990TLX-1.5 LP3990TLX-1.8 LP3990TLX-2.5 LP3990TLX-2.8 Package Marking Tape and Reel LP3990SDX-0.8 L085B LP3990SDX-1.2 L086B LP3990SDX-1.35 L150B LP3990SDX-1.5 L087B LP3990SDX-1.8 L088B LP3990SDX-2.5 L090B LP3990SDX-2.8 L091B Package Marking Tape and Reel LP3990MFX-1.2 SCDB LP3990MFX-1.5 SCEB LP3990MFX-1.8 SCFB LP3990MFX-2.5 SCJB LP3990MFX-2.8 SCKB LP3990MFX-3.3 SCLB ...

Page 5

... 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 -0 Enable Input Voltage -0 Junction Temperature Lead/Pad Temp. (Note 3) LLP/SOT23 micro SMD Storage Temperature Continuous Power Dissipation ...

Page 6

Symbol Parameter e Output noise Voltage (Note 10 Thermal Shutdown SHUTDOWN Enable Control Characteristics I Maximum Input Current Input (Note 12 Low Input Threshold IL V High Input Threshold IH Timing Characteristics T ...

Page 7

Typical Performance Characteristics. µF Ceramic 1.0V OUT(NOM) A Output Voltage Change vs Temperature Ground Current LOAD Ground Current LOAD Unless otherwise specified ...

Page 8

Short Circuit Current Power Supply Rejection Ratio Enable Start-up Time www.national.com 20076816 Power Supply Rejection Ratio 20076819 Enable Start-up Time 20076821 8 Line transient 20076817 20076820 20076822 ...

Page 9

Load Transient 20076825 Noise Density 9 20076828 www.national.com ...

Page 10

Application Hints EXTERNAL CAPACITORS In common with most regulators, the LP3990 requires exter- nal capacitors for regulator stability. The LP3990 is specifi- cally designed for portable applications requiring minimum board space and smallest components. These capacitors must be correctly selected ...

Page 11

... Characteristics section under V and V IL Micro SMD MOUNTING The micro SMD package requires specific mounting tech- niques, which are detailed in National Semiconductor Appli- cation Note AN-1112. For best results during assembly, alignment ordinals on the PC board may be used to facilitate placement of the micro SMD device. ...

Page 12

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted micro SMD, 4 Bump, Package (TLA04) NS Package Number TLA04AMA The dimensions for X1, X2 and X3 are given as 1.014 +/− 0.03mm X2 = 1.294 +/− 0.03mm X3 = ...

Page 13

LLP, 6 Lead, Package (SOT23 Land) NS Package Number SDE06A SOT23 - 5 Package NS Package Number MF05A 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 Conditioners www.national.com/timing Data Converters www.national.com/adc Displays www.national.com/displays Ethernet www.national.com/ethernet Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www ...

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