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LA8509A Datasheet Preview

LA8509A Datasheet

18V/3A Synchronous Step-Down DC-DC Converter

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LA8509A pdf
LA8509A
340KHz, 18V/3A Synchronous Step-Down DC-DC Converter
General Description
Features
The LA8509A is a current mode, synchronous
step-down DC-DC converter that is designed to
meet 3A output current, and utilizes PWM
control scheme that switches with 340KHz
fixed frequency.
The input voltage range of LA8509A is from
4.5V to 18V, and available in adjustable output
voltage from 0.925V to 12V. The supply
current is only 1.3mA during operation and
under 0.3uA in shutdown.
This device provides an enable function that
can be controlled by external logic signal. It
also provides excellent regulation during line
or load transient due to the current mode
operation. Other features of current limit,
soft-start, thermal shutdown protection, and
short circuit protection are also included. Due
to the low RDS(ON) of the internal power
MOSFET, this device provides high efficiency
step-down applications. It is available in
ESOP-8 package.
l Continuous 3A Output Capability
l 0.925V Reference Voltage
l 4.5V to 18V Input Voltage Range
l Adjustable Output from 0.925V to 12V
l 340KHz Oscillation Frequency
l 0.3uA Low Shutdown Current
l 1.3mA Low Supply Current
l Current Mode for Excellent Response
l Support Low ESR Output Ceramic Capacitors
l Internal Current Limit
l Soft-Start
l Short Circuit Protection
l Thermal Shutdown Protection
l ESOP-8 Package
l Meet RoHS Standard
Applications
l Broadband Communication Device
l LCD TV / Monitor
l Storage Device
l Wireless Application
Ordering Information
Marking Information
LA8509A 1 2 3 4
1 (Package Type) => P: ESOP
2 (Number of Pins) => G: 8pin
3 (Output Voltage) => Blank: Adjustable
4 (Special Feature) => Blank: N/A
Available Part Number
LA8509APG
LA8509APG
1234
1 2 (Date Code)
For date code rule, please contact our sales
representative directly
3 4 (Internal Code)
Rev01
-1-
Mar. 07, 2013
www.inno.com.tw



INNO-TECH
INNO-TECH

LA8509A Datasheet Preview

LA8509A Datasheet

18V/3A Synchronous Step-Down DC-DC Converter

No Preview Available !

LA8509A pdf
Typical Application
100K
10nF
71
12V
EN BS
10uH
IN
2
SW
3
22uF
MLCC
0.1uF
LA8509A SS
0.1uF
8
COMP
6
10K
GND
FB
5
44.2K
NC
2.2nF
4
10K
LA8509A
5V
22uF 22uF
MLCC MLCC
100K
10nF
71
12V
EN BS
4.7uH
IN
2
SW
3
22uF
MLCC
0.1uF
LA8509A SS
0.1uF
8
COMP
6
3K
GND
FB
5
2K
NC
6.2nF
4
6.8K
1.2V
22uF 22uF
MLCC MLCC
Efficiency & Thermal Performance
Rev01
-2-
Mar. 07, 2013
www.inno.com.tw


Part Number LA8509A
Description 18V/3A Synchronous Step-Down DC-DC Converter
Maker INNO-TECH
Total Page 18 Pages
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2 LA8509A 18V/3A Synchronous Step-Down DC-DC Converter INNO-TECH
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LA8509A pdf






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