18V/2A Synchronous BUCK Switching Converter in SOT563
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概述
The LP6452AT/F is a synchronous buck converter supporting up to 2A output current. The LP6452AT/F employs an adaptive constant-on-time (COT) control scheme to achieve fast load transient response. The external components are minimized, requiring only one inductor, two resistors, and two capacitors. The LP6452AT/F supports both aluminum polymer capacitors and ceramic capacitors without extra compensation components. The LP6452AT/F integrates PFM (Pulse Frequency Modulation) operation, which helps maintain the system efficiency at light load. The LP6452AT/F also integrates multiple protection functions, i.e., over-current protection (OCP), over-temperature protection (OTP), under-voltage lockout (UVLO), and short circuit protection (SCP). The LP6452AT/F is available in a small 6-pin 1.6mmΧ1.6mm SOT563 package.
应用
◆ Industrial PC ◆ Network/digital video recorder (NVR/DVR) ◆ TV and TV box ◆ 12V Industrial bus applications
数据参数
数据参数
输入电压(V)
4.2~18
输出电压(V)
0.8~7
FB电压（V）
0.6
电压精度
±1%
工作频率(Hz)
1.2M
最大输出电流(A)
3
输出通道数量
1
工作模式
Syn.
EN控制
Y
轻负载模式
PFM/PWM
产品特征/功能
COT,Internal Soft Start,OCP,SCP,OTP
封装
SOT563(FC）
特征
特征
◆ Wide input voltage range: 4.2V – 18V ◆ Output voltage range: Vref – 7V ◆ High efficiency operation - Integrated an 60-mΩ LS-MOSFET and an 90-mΩ HS-MOSFET - 91% efficiency at 2A load from 12V to 5V conversion ◆ Automatic PFM mode at light load ◆ ±1% Vref accuracy ◆ Typical 1.2-MHz switching frequency ◆ COT control scheme with fast load transient response ◆ Hiccup protection ◆ Integrated UVLO, OVP, OCP, SCP, and OTP protections ◆ 1.25ms typical soft-start time ◆ 1.6mm Χ 1.6mm SOT563 package ◆ RoHS Compliant and 100% Lead (Pb) Free
