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概述
The LP6456 is a synchronous buck converter supporting up to 6A output current. The 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 LP6456 supports both aluminum polymer capacitors and ceramic capacitors without extra components.
The LP6456 integrates PFM (Pulse Frequency Modulation) operation, which helps maintain the system efficiency at light load. The LP6456 also integrates multiple protection functions, i.e., over-current protection (OCP),
over-temperature protection (OTP), under (UVLO), over-voltage protection protection (SCP).
The LP6456 is available in a small 6 SOT23-6 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)
4.2-16
输出电流(A)
6
输出电压(V)
0.6-7
FB电压(V)
0.6
电压精度
±1%
工作频率(Hz)
400K
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
SOT23-6(FC)
特征
特征
◆ Wide input voltage range: 4.2V – 16
◆ Output voltage range: Vref– 7V
◆ 6-A continues output current
◆ High efficiency operation
- Integrated an18-mΩ LS-MOSFET and a HS-MOSFET
- 93% efficiency at 6A load from 12V to 5V conversion
◆ Automatic PFM mode at light load
◆ ±1% Vref accuracy at 25ºC
◆ Typical 400-kHz switching frequency
◆ COT control scheme with fast load transient response
◆ Output discharge function integrated
◆ Cycle by cycle current limit and hiccup protect
◆ Integrated UVLO, OVP, OCP, SCP, and OTP protections
◆ 1.5ms typical soft-start time
◆ 1.6mm Χ 2.9mm SOT23-6 package
◆ RoHS Compliant and 100% Lead (Pb) Free
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