LT3667 PDF Datasheet


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Description

This is 40V 400mA Step-Down Switching Regulator. Features Triple Output Supply from a Single Input Requires Only One Inductor n I = 50μA at 12V to 5V, 3.3V and 2.5V with No Load Q IN n Buck Regulator: Low Ripple (<15mVP-P) Burst Mode Operation® 400mA Output with Internal Power Switch 4.3V to 40V Input Operation Range (60V Max) n Dual Low Dropout Linear Regulators 200mA Outputs with Programmable Current Limits 1.6V to 45V Input Range Fault Protected to ±45V n Adjustable 250kH- to 2.2MH- Switching Frequency n Synchronizable Between 300kH- and 2.2MH- n Programmable Undervoltage Lockout n Power Good Indicators n Available in a Thermally-Enhanced 16-Lead MSOP and 24-Lead (3mm × 5mm) QFN Packages n LT3667 40V 400mA Step-Down Switching Regulator with Dual Fault Protected LDOs Description The LT®3667 is a monolithic triple power supply composed of a 400mA buck switching regulator and two 200mA low dropout linear regulators (LDOs). The buck regulator includes a high efficiency switch, a boost diode, and the necessary .