2A , 18V, 350KHz
Synchronous Step-Down Converter
GENERAL DESCRIPTION
The PT1203 is a monolithic pulse-width-modulated (PWM) synchronous step-down switch mode regulator with two internal power MOSFETs. It achieves 2A continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limit and thermal shutdown.
The PT1203 requires a minimum number of external components, available in SOP-8 and ESOP-8 package.
FEATURES
l 2A Output Current
l 0.13Ω Internal Power MOSFET Switch
l Stable with Low ESR Output Ceramic Capacitors
l Up to 93% Efficiency
l Fixed 350KHz Frequency
l Thermal Shutdown
l Cycle-by-Cycle Over Current Protection
l Wide 4.75V to 18V Operating Input Range
l Output Adjustable from 0.923V to 15V
l Available in 8-Pin SOP8 and ESOP8 Packages
APPLICATION
l 2A Output Current
l 0.13Ω Internal Power MOSFET Switch
l Stable with Low ESR Output Ceramic Capacitors
l Up to 93% Efficiency
l Fixed 350KHz Frequency
l Thermal Shutdown
l Cycle-by-Cycle Over Current Protection
l Wide 4.75V to 18V Operating Input Range
l Output Adjustable from 0.923V to 15V
l Available in 8-Pin SOP8 and ESOP8 Packages
APPLICATION
l 2A Output Current
l 0.13Ω Internal Power MOSFET Switch
l Stable with Low ESR Output Ceramic Capacitors
l Up to 93% Efficiency
l Fixed 350KHz Frequency
l Thermal Shutdown
l Cycle-by-Cycle Over Current Protection
l Wide 4.75V to 18V Operating Input Range
l Output Adjustable from 0.923V to 15V
l Available in 8-Pin SOP8 and ESOP8 Packages
APPLICATION
l 2A Output Current
l 0.13Ω Internal Power MOSFET Switch
l Stable with Low ESR Output Ceramic Capacitors
l Up to 93% Efficiency
l Fixed 350KHz Frequency
l Thermal Shutdown
l Cycle-by-Cycle Over Current Protection
l Wide 4.75V to 18V Operating Input Range
l Output Adjustable from 0.923V to 15V
l Available in 8-Pin SOP8 and ESOP8 Packages
APPLICATION
l 2A Output Current
l 0.13Ω Internal Power MOSFET Switch
l Stable with Low ESR Output Ceramic Capacitors
l Up to 93% Efficiency
l Fixed 350KHz Frequency
l Thermal Shutdown
l Cycle-by-Cycle Over Current Protection
l Wide 4.75V to 18V Operating Input Range
l Output Adjustable from 0.923V to 15V
l Available in 8-Pin SOP8 and ESOP8 Packages
APPLICATION
l 2A Output Current
l 0.13Ω Internal Power MOSFET Switch
l Stable with Low ESR Output Ceramic Capacitors
l Up to 93% Efficiency
l Fixed 350KHz Frequency
l Thermal Shutdown
l Cycle-by-Cycle Over Current Protection
l Wide 4.75V to 18V Operating Input Range
l Output Adjustable from 0.923V to 15V
l Available in 8-Pin SOP8 and ESOP8 Packages
APPLICATION
l PC Monitors
l LCD TV
l Distributed Power Systems
l Network Systems
l FPGA, DSP, ASIC Power Supplies
l Notebook Computers
TYPICAL APPLICATION CIRCUIT
