DC-DC Converter. LA8521 Datasheet

LA8521 Converter. Datasheet pdf. Equivalent

Part LA8521
Description 5A/23V Step-Down DC-DC Converter
Feature General Description LA8521 300KHz, 5A/23V Step-Down DC-DC Converter Features LA8521 is a voltage m.
Manufacture INNO-TECH
Datasheet
Download LA8521 Datasheet

General Description LA8521 300KHz, 5A/23V Step-Down DC-DC C LA8521 Datasheet
Recommendation Recommendation Datasheet LA8521 Datasheet





LA8521
General Description
LA8521
300KHz, 5A/23V Step-Down DC-DC Converter
Features
LA8521 is a voltage mode, step-down DC-DC
converter that is designed to meet 5A output
current, and utilizes PWM control scheme that
switches with 300KHz fixed frequency.
The input voltage range of LA8521 is from 3.6V
to 23V, and available in adjustable output
voltage from 0.8V to VIN. The supply current is
only 3mA during operation and under 1uA 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. Other features of current
limit, 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 can also operate with a
maximum duty cycle of 100% for use in low
drop-out conditions. The package is available
in standard ESOP-8.
l Adjustable Output Voltage from 0.8V to VIN
l 3.6V to 23V Input Voltage Range
l Continuous 5A Output Capability
l 300KHz Oscillation Frequency
l 0.8V Reference Voltage
l 1uA Low Shutdown Current
l 3mA Low Supply Current
l 100% Duty Cycle
l Built-in Low RDS(ON) Power MOSFET
l No External Compensation Required
l Adjustable Current Limit
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
LA8521 1 2 3 4
1 (Package Type) => P: ESOP
2 (Number of Pins) => G: 8 pin
3 (Output Voltage) => Blank: Adjustable
4 (Special Feature) => Blank: N/A
Available Part Number
LA8521PG
Marking Information
LA8521PG
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



LA8521
Typical Application
l 12V to 5V, IOUT=5A
VIN=12V
IN
4
SW
5,6
15uH
330uF 10uF 0.1uF
E/C MLCC MLCC
2.7K
EN
2
LA8521
5A SBD
Optional
3 OCSET
GND
7,8
FB 1
1.3K
6.8K
l Efficiency Curve
LA8521
VOUT=5V/5A
330uF 0.1uF
E/C MLCC
100%
12V to 2.5V
12V to 5V
12V to 3.3V
12V to 9V
90%
80%
70%
60%
50%
0
12 34
Output C urrent (A)
5
100%
5V to 1.2V
5V to 2.5V
5V to 1.8V
5V to 3.3V
90%
80%
70%
60%
50%
0
12 34
Output C urrent (A)
5
Rev01
-2-
Mar. 07, 2013
www.inno.com.tw





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