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LA8533A fiches techniques PDF

Linear Artwork - 3A/21V Step-Down DC-DC Converter

Numéro de référence LA8533A
Description 3A/21V Step-Down DC-DC Converter
Fabricant Linear Artwork 
Logo Linear Artwork 





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LA8533A fiche technique
General Description
LA8533/A
1.4MHz, 3A/21V Step-Down DC-DC Converter
Features
LA8533/A is a current mode, step-down DC-DC
converter that is designed to meet 3A output
current, and utilizes PWM control scheme that
switches with 1.4MHz fixed frequency.
The input voltage range of LA8533/A is from
4.5V to 21V, and available in adjustable output
voltage from 0.8V to VIN. The supply current is
only 1mA during operation and under 20uA 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 soft-start,
current limit, thermal shutdown protection,
and short circuit protection are also included.
To increase light-load conversion efficiency,
the Power-Saving Mode (PSM) feature is
automatically activated. This device 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 4.5V to 21V Input Voltage Range
l Continuous 3A Output Capability
l 0.8V Reference Voltage
l 100% Duty Cycle
l 20uA Low Shutdown Current
l 1mA Low Supply Current
l 1.4MHz Switching Frequency in PWM Mode
l Power-Saving Mode (PSM) at Light-Load
l Current Mode for Excellent Response
l Internal Soft-Start & Current Limit
l No External Compensation Required
l Support Low ESR Output Ceramic Capacitors
l Short Circuit & Thermal Shutdown Protection
l Standard ESOP-8 Package
l Meet RoHS Standard
Applications
l Wireless / Broadband Communication
l LCD TV / Monitor
l Set-Top-Box
l Portable Device
Ordering Information
LA8533/A 1 2 3 4 ; (A: Bonding Code)
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
LA8533PG
LA8533APG
Marking Information
NC GND SW SW
NC EN NC FB
LA8533PG
1234
LA8533APG
1234
FB EN NC IN LA8533
NC IN SW GND LA8533A
1 2 (Date Code)
For date code rule, please contact our sales
representative directly.
3 4 (Internal Code)
LA8533(A)-D01
-1-
Dec. 26, 2010
www.linear-artwork.com

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