LTC1430AIGN#TR Description
The LTC 1430A is a high power, high eficiency switching regulator controller optimized for 5V to 1.xV-3.xV applications. lt includes a precision internal reference and an internal feedback system that can provide output regulation of +1% over temperature, load current, and line voltage shifts.
The LTC1430A uses a synchronous switching architecture with two-Chanel output devices, eliminating the need for a high-power, high-cost P-channel device. Additionally, it senses output current across the drain-source resistance of the upper N-channel FET, providing an adjustable current limit without an external low-value sense resistor.
LTC1430AIGN#TR Features
High Power 5V to 1.xV-3.xV Switching Controller:
Can Exceed 10A 0utput
Maximum Duty Cycle > 90% Permits 3.3V to 2.xV
Conversion Using a Low Power 5V Supply
All N-Channel External MOSFETs
Fixed Frequency Operation- Small L
Excellent Output Regulation: +1% 0ver Line, Load
and Temperature Variations
High Eficiency: Over 95% Possible
No Low-Value Sense Resistor Needed
Outputs Can Drive External FETs with Up to
10,000pF Gate Capacitance
Quiescent Current: 350uA Typ, 1μA in Shutdown
Fast Transient Response
Adjustable or Fixed 3.3V Output
Available in 8-Lead So and 16-Lead GN
and S0 Packages
LTC1430AIGN#TR Applications
Power Supply for Pentium° II and AMD-K6°
Microprocessors
High Power 5V to 3. xV Regulators
Local Regulation for Dual Voltage Logic Boards
Low Voltage, High Current Battery Regulation
