AP65455：Buck Converter
| Part Number | Data Sheet | SPICE Model | Type | Efficiency (%) | RDS(ON) (mΩ) | Frequency Typ (kHz) | MinimumInput Voltage (V) | MaximumInput Voltage (V) | Output Current (A) | Output Voltage (V) | Standby Quiescent Current Typ (µA) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AP65455 | AP65455.pdf | - | - | 90 (high-side) / 57 (low side) | 650 | 4.5 | - | - | 0.76 to 6 | 600 |
Description
The AP65455 is an adaptive constant on-time mode synchronous buck converter providing high efficiency, excellent transient response and high DC output accuracy for low-voltage regulation in digital TV and monitor. The constant-on-time control scheme handles wide input/output voltage ratios and provides low external component count. The internal proprietary circuit enables the device to adopt both low equivalent series resistance (ESR) output capacitors, such as SP-CAP or POSCAP and ultra-low ESR ceramic capacitors. The AP65455 features programmable soft-start, UVLO, OTP, high voltage tolerance EN pin, Power Good and OCP to protect the circuit. This IC is available in DFN3030-10 package.
Application
Point of Load power
Features
- Fixed Frequency Emulated Constant On-time Control
- Good Stability Independent of the Output Capacitor ESR
- Fast Load Transient Response
- Synchronous Rectification: 90mΩ Internal High-side Switch and 57mΩ Internal Low-side Switch
- Wide Input Voltage Range: 4.5V to 18V
- Output Voltage Range: 0.76V to 6V
- 4A Continuous Output Current
- 650kHz Switching Frequency
- Built-in Over Current Limit
- Support Power Good Pin
- High Voltage Tolerance EN pin
- Built-in Thermal Shutdown Protection
- Programmable Soft-start
- Pre-biased Start-up
Ordering Information
- AP65455FN-7
U-DFN3030-10
- AP65455.pdf AP65455
