LTC3824 - High Voltage Step-Down Controller With 40µA Quiescent Current

The LTC3824 is a step-down DC/DC controller designed to drive an external P-channel MOSFET. With a wide input range of 4V to 60V and a high voltage gate driver, the LTC3824 is suitable for many industrial and automotive high power applications. Constant frequency current mode operation provides excellent performance.

The LTC3824 can be configured for Burst Mode operation. Burst Mode operation enhances low current efficiency (only 40µA quiescent current) and extends battery run time. The switching frequency can be programmed up to 600kHz and is easily synchronizable.

Other features include current limit, soft start, micropower shutdown, and Burst Mode disable.

The LTC3824 is available in a 10-lead MSE power package.

Features

Wide Input Range: 4V to 60V
Current Mode Constant Frequency PWM
Very Low Dropout Operation: 100% Duty Cycle
Programmable Switching Frequency: 200kHz to 600kHz
Selectable High Efficient Burst Mode® Operation: 40µA Quiescent Current
Easy Synchronization
8V, 2A Gate Drive (VCC > 10V) for Industrial High Voltage P-Channel MOSFET
Programmable Soft-Start
Programmable Current Limit
Available in a Small 10-Pin Thermally Enhanced MSE Package

Typical Application

Applications

Industrial and Automotive Power Supplies
Telecom Power Supplies
Distributed Power Systems

Packaging

**Order Information**
Part Number	Package	Temp	Price(1-99)	Price (1k)*
LTC3824EMSE#PBF	MS-10E	E	$2.78	$1.95
LTC3824EMSE#TRPBF	MS-10E	E		$2.01
LTC3824HMSE#PBF	MS-10E	H	$3.64	$2.55
LTC3824HMSE#TRPBF	MS-10E	H		$2.61
LTC3824IMSE#PBF	MS-10E	I	$3.34	$2.34
LTC3824IMSE#TRPBF	MS-10E	I		$2.40
LTC3824MPMSE	MS-10E	MP	$4.96	$3.47
LTC3824MPMSE#PBF	MS-10E	MP	$4.96	$3.47
LTC3824MPMSE#TR	MS-10E	MP		$3.53
LTC3824MPMSE#TRPBF	MS-10E	MP		$3.53