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Diodes Incorporated AP62800 | Demoboard AP62800SJ-EVM
4.5V TO 17V INPUT, 8A SYNCHRONOUS BUCK CONVERTER
Overview
| Topology | Buck Converter |
| Input voltage | 4.5-17 V |
| Switching frequency | 400-1200 kHz |
| Output 1 | 5 V / 8 A |
| IC revision | 2 |
Description
The AP62800 is a 8A, synchronous buck converter with a wide input voltage range of 4.5V to 17V. The device fully integrates a 22mΩ high-side power MOSFET and a 10mΩ low-62800side power MOSFET to provide high-efficiency step-down DC-DC conversion.The AP62800 device is easily used by minimizing the external component count due to its adoption of Constant On-Time (COT) control to achieve fast transient response, easy loop stabilization, and low output voltage ripple.The AP62800 design is optimized for Electromagnetic Interference (EMI) reduction. The device has a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which reduces high-frequency radiated EMI noise caused by MOSFET switching.
Features
VIN: 4.5V to 17VOutput Voltage (VOUT): 0.6V to 7V8A Continuous Output Current0.6V ± 1% Reference Voltage195μA Quiescent CurrentSelectable Operation Modes
- Pulse Frequency Modulation (PFM)
- Ultrasonic Mode (USM)
- Pulse Width Modulation (PWM)Selectable Switching Frequency
- 400kHz
- 800kHz
- 1.2MHzProgrammable Soft-Start TimeProprietary Gate Driver Design for Best EMI ReductionPower-Good IndicatorPrecision Enable Threshold to Adjust UVLOProtection Circuitry
- Undervoltage Lockout (UVLO)
- Cycle-by-Cycle Valley Current Limit
- Thermal Shutdown
Typical applications
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | L(µH) | IRP,40K(A) | ISAT,30%(A) | RDC typ.(mΩ) | RDC max.(mΩ) | fres(MHz) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 50 V(DC), 47 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance47 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 100 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3 % | Insulation Resistance5 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 25 V(DC), 1 µF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | Capacitance1 µF | Capacitance±10% | Rated Voltage25 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor10 % | Insulation Resistance0.5 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | |||||
 | WE-XHMI SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-XHMI SMT Power Inductor | – | – | – | Size6030 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length6.65 mm | Width6.45 mm | Height3 mm | – | – | Inductance1.2 µH | Performance Rated Current14.45 A | Saturation Current @ 30%21.6 A | DC Resistance6.4 mΩ | DC Resistance7.04 mΩ | Self Resonant Frequency53 MHz | MountSMT |