DC/DC Converter. LM4510 Datasheet

LM4510 Converter. Datasheet pdf. Equivalent

Part LM4510
Description Synchronous Step-Up DC/DC Converter
Feature LM4510 Synchronous Step-Up DC/DC Converter with True Shutdown Isolation October 2007 LM4510 Synchr.
Manufacture National Semiconductor
Datasheet
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LM4510 Synchronous Step-Up DC/DC Converter with True Shutdow LM4510 Datasheet
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LM4510
October 2007
LM4510
Synchronous Step-Up DC/DC Converter with True
Shutdown Isolation
General Description
The LM4510 is a current mode step-up DC/DC converter with
a 1.2A internal NMOS switch designed to deliver up to 120
mA at 16V from a Li-Ion battery.
The device's synchronous switching operation (no external
Schottky diode) at heavy-load, and non-synchronous switch-
www.DataSheeitn4gUo.cpoemration at light-load, maximizes power efficiency.
True shutdown function by synchronous FET and related cir-
cuitry ensures input and output isolation.
A programmable soft-start circuit allows the user to limit the
amount of inrush current during startup. The output voltage
can be adjusted by external resistors.
The LM4510 features advanced short-circuit protection to
maximize safety during output to ground short condition. Dur-
ing shutdown the feedback resistors and the load are discon-
nected from the input to prevent leakage current paths to
ground.
The LM4510 is available in a 10-pin thermally enhanced
Leadless Leadframe Package: LLP-10.
Features
18V@80 mA from 3.2V input
5V@280 mA from 3.2V input
No external Schottky diode required
85% peak efficiency
Soft start
True shutdown isolation
Stable with small ceramic or tantalum output capacitors
Output short-circuit protection
Feedback fault protection
Input under-voltage lock out
Thermal shutdown
0.002 µA shutdown current
Wide input voltage range: 2.7V to 5.5V
1.0 MHz fixed frequency operation
Low-profile 10–pin LLP package (3mm x 3mm x 0.8mm)
Applications
Organic LED Panel Power Supply
Charging Holster
White LED Backlight
USB Power Supply
Class D Audio Amplifier
Camera Flash LED Driver
Typical Application Circuit
FIGURE 1. Typical Application Circuit
© 2007 National Semiconductor Corporation 300310
30031001
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LM4510
Efficiency at Vout = 16V
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30031030
Connection Diagram
LLP-10 No Pullback Package, 3mm x 3mm x 0.8mm
NS Package Number SDA10A
30031002
Ordering Information
Order Number
LM4510SD
LM4510SDX
SPEC
NOPB
NOPB
Package Type
LLP-10
LLP-10
Pin Descriptions/Functions
NSC Package Drawing
SDA10A
SDA10A
Package Marking
L4510
L4510
Supplied As
1000 Units, Tape and Reel
4500 Units, Tape and Reel
Pin Name
Function
1 SW Switch pin. Drain connections of both internal NMOS and PMOS devices.
2
PGND
Power ground
3 VIN Analog and Power supply input. Input range: 2.7V to 5.5V.
4 EN Enable logic input. HIGH= Enabled, LOW=Shutdown.
5 SS Soft-start pin
6
AGND
Analog ground
7
COMP
Compensation network connection.
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