AP65352

NOT RECOMMENDED FOR NEW DESIGN USE AP65353 AP65352 3A, 18V, 650kHz ADAPTIVE COT STEP-DOWN CONVERTER Description The AP65352 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 TVs and monitors. Pin Assignments ( Top View ) 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 AP65352 also features programmable soft-start, UVLO, OTP, OVP and OCP to protect the circuit. AP65352 operates in continuous conduction mode (CCM) in light load conditions for better EMI performance. AP65353 and AP65355 are the options for light-load efficiency enhancement. EN 1 FB 2 VREG5 3 SS 4 Exposed Pad 9 SO-8EP 8 VIN 7 BST 6 SW 5 PGND This IC is available in SO-8EP package. 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  3A Continuous Output Current  650kHz Switching Frequency  Built-in Overcurrent Limit  Built-in Overvoltage Protectio...