Datasheet Linear Technology LT3686HDD#PBF — 数据表

LT3686
37V/1.2A Step-Down
Regulator in 3mm × 3mm DFN
Features Description Wide Input Range:
Operation from 3.6V to 37V
Overvoltage Lockout Protects Circuit Through
55V Transients
n Low Minimum On-Time:
Converts 16VIN to 3.3VOUT at 2MHz
n 1.2A Output Current
n Adjustable Frequency: 300kHz to 2.5MHz
n Constant Switching Frequency at Light Loads
n Tracking and Soft-Start
n Precision UVLO
n Short-Circuit Robust
n I in Shutdown 0.8V, BD < 5.2V ns
mV 2.3
2.3 Switch Active Current Minimum Boost Voltage Above Switch %/V 680
l Max BD Pin Active Load Current UNITS 2.2 mA
2.4 V 30 40 mA BD Pin Active Load Disable Threshold l 5.2 6.5 V DA Pin Current to Stop OSC l 1.2 1.7 A MODE High l 0.8 MODE Low l V MODE Pin Bias Current
SS Threshold V 0.1 µA 0.9 SS Source Current VSS = 1V EN/UVLO Bias Current VEN/UVLO = 10V
VEN/UVLO = 0V EN/UVLO Threshold to Turn Off 1.3 l EN/UVLO Hysteresis Current
Boost Diode Forward Drop 0.4 IBD to IBOOST = 200mA Note 1: Stresses beyond those listed under Absolute Maximum Ratings …