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4s High Accuracy Secondary Hardware Protector With CTL and LDO TPB7462
◉ The TPB7462 series is a secondary overcharge hardware protector for 2s, 3s, or 4s lithium-ion battery packs.
◉ TPB7462 series provides high accuracy overcharge threshold to avoid the safety risk from battery pack. It also provides the CTL pin to directly control output or connect PTC (Positive Temperature Coefficient) resistor to monitor over temperature of battery pack.
◉ The TPB7462 integrates a LDO for powering external circuit with extremely low leakage current.
◉ TPB7462 is available in WDFN2x2-8 package. Its operation temperature range is from −40°C to +85°C.
product Features
− Normal Mode 4μA at +25°C
− Shutdown Mode 0.4μA at +25°C
− Programmable Overcharge Threshold Voltage from 4.1V to 4.8V in 50mV step
− Overcharge Threshold Accuracy ±20mV (+25°C)
− Overcharge Threshold Accuracy ±25mV (- 10°C to +60°C)
− Overcharge Hysteresis Voltage −380mV
− Selectable Overcharge Detection Delay Time 2s, 4s, 6s, and 8s
− Selectable Delay Time for Shutdown 2s, 4s, 6s, and 8s
− Selectable CMOS Active High or Low output
− Selectable LDO Output 3.0V, and 3.3V
− LDO output Cut off Voltage 2.5V
− Output Current 2mA
− Short Circuit Protector
Applications
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