Description

The R5426D116EA-TR-F is an electronic component in the IC Chips category. It is a protection IC for over-charge/discharge of rechargeable one-cell Lithium-ion (Li+) excess load current. This component also includes a short circuit protector for preventing large external short circuit current. It is composed of three voltage detectors, a reference unit, a delay circuit, a short circuit protector, and a logic circuit. When the charging voltage crosses the detector threshold from a low value to a value higher than VDET1, the output switches to a low level to protect the charger's negative pin level. After detecting over-charge, the voltage detector (VD1) can be reset and the output returns to high when the VDD voltage decreases to a level lower than "VREL1." The R5426D116EA-TR-F is suitable for Li+ one-cell protectors for battery packs and high precision protectors for cell phones and other gadgets using on board Li+ one-cell batteries.

Specifications and features

- Low supply current: Supply current Typ. 3.0µA (Standby current Typ. 0.3µA for detecting over-discharge)

- High accuracy detector threshold: Over-charge detector (Topt=25°C) ±25mV (Topt=0 to 50°C) ±30 mV, Over-discharge detector ±2.5%

- Variety of detector threshold: Over-charge detector threshold 4.0V - 4.4V step of 0.005V, Over-discharge detector threshold 2.0V - 3.0V step of 0.005V

- Built-in protection circuit: Excess current protection 0.05V - 0.4V step of 0.005V, Accuracy ±15%

- Output delay of over-charge: Time delay at C3=0.01µF and VDD=4.3V - 75ms for R5421N111C

- Output delay of over-discharge: VDD=2.4V with built-in capacitor - 10ms for R5421N111C/112C

- Small package: SOT-23-6 / 6-pin

Application Scenarios

- Li+ one-cell protector for battery pack

- High precision protectors for cell-phones and any other gadgets using on board Li+ one-cell battery

Comparison

- Provides protection against over-charge and discharge of Li+ batteries

- Includes a short circuit protector for preventing large external short circuit current

- Low supply current and standby current

- High accuracy detector threshold

- Variety of detector threshold options

- Built-in protection circuit for excess current protection

- Output delay for over-charge and over-discharge

- Compact SOT-23-6 / 6-pin package

- Not suitable for multi-cell Lithium-ion (Li+) batteries