Diodes Incorporated — Analog and discrete power solutions
U DFN3030 10

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

DFN3030-10.png
Back to Inactve Datasheet Archive

AP65455 (Obsolete)

Inactive Datasheet Archive

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.

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.

Feature(s)

  • 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

Application(s)

Point of Load power

Product Specifications

Product Parameters

Efficiency (%) 94
Frequency Typ (Hz) 650
HS RDS(ON) (mΩ) 90
LS RDS(ON) (mΩ) 57
MaximumInput Voltage (V) N/A
MinimumInput Voltage (V) 4.5
Output Current (mA) N/A
Output Voltage (V) 0.76 to 6
Quiescent Current Typ (mA) 0.6
Shutdown Current Typ (µA) 1
Type Buck

Related Content

Packages

Technical Documents

Recommended Soldering Techniques

TN1.pdf