特点
Designed Specifi cally to Drive Large and Small Q
G
PFETs
Very Low Loss Replacement for Power Supply OR’ing Diodes
Wide Operating Voltage Range: 3.6V to 36V
–40°C to 125°C Operating Temperature Range
Reverse Battery Protection
Automatic Switching Between DC Sources
Low Quiescent Current: 35μA per Channel
Load Current Sharing
MOSFET Gate Protection Clamp
Precision Input Control Comparators for Setting Switchover Threshold Points
Open-Drain Feedback Points for Customer Specified Hysteresis Control
Minimal External Components
Space Saving 10-Lead MSOP Package
典型应用
典型应用
描述
The LTC4416 integrates two interconnected PowerPath controllers with soft switchover control. The “soft-off” switchover permits the users to transfer between two dissimilar voltages without excessive voltage undershoot (or VDROOP) in the output supply. The LTC4416/LTC4416-1 also contain a “fast-on” feature that dramatically increases gate drive current when the forward input voltage exceeds 25mV. The LTC4416 “fast off” feature is engaged when the sense voltage exceeds the input voltage by 25mV. The LTC4416-1 enables the fast off under the same conditions and when the other external P-channel device is selected using the enable pins.
The wide operating supply range supports operation from one to eight Li-Ion cells in series. The low quiescent current (35μA per channel) is independent of the load current. The gate driver includes an internal voltage clamp for MOSFET protection.
The LTC4416/LTC4416-1 are available in low profi le 10-lead MSOP packages.