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概述
The LP3208H is a synchronous buck converter supporting up to 1.5A output current. The LP3208H employs an adaptive constant-off-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 LP3208H supports both aluminum polymer capacitors and ceramic capacitors without extra compensation components.
The LP3208H integrates PFM (Pulse Frequency Modulation) operation, which helps maintain the system efficiency at light load. The LP3208H 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 LP3208H is available in a small SOT23-5, SOT23-6 or SOT563 package.
应用
◆ Industrial PC
◆ Network/digital video recorder (NVR/DVR)
◆ TV
◆ Set-top Box
◆ WIFI
◆ Battery powered devices
数据参数
数据参数
输入电压(V)
2.5-5.5
输出电压(V)
0.6-5.5
FB电压(V)
0.6
电压精度
±2%
工作频率(Hz)
1.5M
最大输出电流(A)
1.5
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,100% Duty,Internal Soft Start,OCP,OVP,SCP,OTP
封装
SOT23-5/SOT23-6/SOT563
特征
特征
◆ Input voltage range: 2.7V~ 5.5V
◆ Output voltage range: 0.6V ~VIN
◆ High efficiency operation
- Integrated a 120mΩ LS-MOSFET and a 200mΩ HS-MOSFET
- Integrated a 130mΩ LS-MOSFET and a 215mΩ HS-MOSFET
- More than 90% efficiency at 1A load from 5V to 3.3V conversion
◆ Automatic PFM mode at light load
◆ ±1.5% VREF accuracy at 25℃
◆ Low quiescent current: 40μA
◆ Shutdown current <1μA
◆ Pseudo fixed 1.5MHz switching frequency
◆ Adaptive COT control scheme with fast load transient response
◆ PG output
◆ Integrated UVLO, OVP, OCP, SCP, and OTP protections
◆ 0.4ms typical soft-start time
◆ Auto-discharge
◆ SOT23-5, SOT23-6 and SOT563 package
◆ RoHS Compliant and 100% Lead (Pb) Free
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