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概述
The LP6434SPF is a high efficiency synchronous buck converter supporting up to 4A output current and low heat.
The LP6434SPF employs an adaptive constant-on-time (COT) control scheme to achieve fast load transient response and without external compensation. The external components are minimized, requiring only one
inductor, several resistors and capacitors.
The LP6434SPF supports both aluminum polymer capacitors and ceramic capacitors without extra compensation components.
The LP6434SPF integrates PFM (Pulse Frequency Modulation) operation, which helps maintain the system efficiency at light load. The LP6434SPF also integrates multiple protection functions, i.e., over-voltage protection (OVP), over-current protection (OCP), over-temperature protection (OTP), under-voltage lockout (UVLO), and short circuit protection (SCP).
The LP6434SPF is available in an 8-pin ESOP-8 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)
4.2-30
输出电流(A)
4
输出电压(V)
0.6-13.2
FB电压(V)
0.6
电压精度
±1%
工作频率(Hz)
500K
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
ESOp8
特征
特征
◆ Wide input voltage range: 4.2V – 30V, 32V absolute maximum voltage rating
◆ Output voltage range: Vref – 13.2V
◆ High efficiency operation
- Integrated a 40-mΩ LS-MOSFET and a 70-mΩ HS-MOSFET
-95% peak efficiency from 12V to 5V conversion
◆ Constant-on time (COT) control with fast transient response
◆ ±1% 0.6V Vref accuracy
◆ Typical 500-kHz switching frequency
◆ 95% maximum duty cycle
◆ Programmable soft-start time
◆ Integrated UVLO, OVP, OCP, SCP, and OTP protections
◆ ESOP-8 package
◆ RoHS Compliant and 100% Lead (Pb) Free
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