LT LTC4007EGN#PBF

Литий-ионный-40°C ~ 85°C (TA)

Overview

The LTC4007EGN is a complete constant-current/constant-voltage charger controller for 3- or 4-cell lithium-ion batteries. The PWM controller uses a synchronous, quasi-constant frequency, constant off-time architecture that will not generate audible noise even when using ceramic capacitors. Charging current is programmable to ±4% accuracy using a programming resistor. Charging current can also be monitored as a voltage across the programming resistor.

LTC4007EGN includes a thermistor input, which suspends charging if an unsafe temperature condition is detected. If the cell voltage is less than 2.5V, a low-battery indicator asserts and can be used to program a trickle charge current to safely charge depleted batteries. The FAULT pin is also asserted and charging terminates if the low-battery condition persists for more than 1/4 of the total charge time.

Features

Applications

• Golf carts
• Forklift
• Pallet jacks
• Personnel carriers
• Maintenance shops
• Rental fleets
• Truck dealers
• Floor scrubber
• Material handling
• Man lift