Device Overview
MP2637GR-Z combines a single-cell switch-mode charger, system power-path management and reverse boost operation in a QFN-24 package. The recommended input range is 4.5 V to 6 V, programmable charge current reaches 2.5 A, and boost-mode output-current limit can be programmed up to 2.4 A.
The charger supports selectable 4.2 V or 4.35 V battery regulation with 0.5% accuracy. A 600 kHz internal oscillator is used, with control behavior that can extend duty cycle when input and battery voltages are close.
Confirmed Technical and Ordering Data
| Parameter | Confirmed value | Scope / condition |
|---|---|---|
| Device Function | Single-cell switch-mode battery charger with power-path management and reverse boost mode | Manufacturer documented |
| Input Voltage | 4.5 to 6 V | recommended operating input |
| Output Voltage Or Range | Selectable 4.2 V or 4.35 V charge voltage; boost operation from battery to SYS | Manufacturer documented |
| Current Rating | 2.5 A programmable charge current; 2.4 A programmable boost output-current limit | Manufacturer documented |
| Switching Frequency | 600 kHz | built-in oscillator |
| Accuracy | 0.5 % | charge-voltage accuracy |
| Protection Features | Input OVP; battery OVP; thermal regulation/shutdown; battery temperature monitoring; short-circuit protection; programmable timer | Manufacturer documented |
| Power Path | Integrated input-current limit and input-voltage regulation with system priority | Manufacturer documented |
| Exact Package | QFN-24, 4 mm x 4 mm GR-Z exact orderable | Manufacturer documented |
| Temperature Grade | -40 to 125 °C | operating junction-temperature range |
Engineering Selection Guidance
Charge mode and boost mode are separate power-flow states. With an input source present, the IC charges the battery while managing system load priority; without the source, the battery can feed the SYS rail through boost operation. The 2.5 A charge-current figure and 2.4 A boost-current-limit figure therefore describe different paths.
Power-path control includes input-current limiting and input-voltage regulation. These functions allow the system load to take priority before remaining input power is allocated to battery charging, so adapter capability affects the achievable battery current.
Protection includes input and battery over-voltage protection, battery temperature monitoring, thermal regulation/shutdown, timer protection and output short-circuit handling. The exact GR-Z part is QFN-24 (4 mm x 4 mm), with recommended junction operation from -40 to 125 °C.
Lifecycle and Procurement
Monolithic Power Systems currently lists MP2637GR-Z as an active exact orderable. The exact package is QFN-24, 4 mm x 4 mm. The documented temperature information used for this exact part is -40 to 125 °C. Manufacturer lifecycle status does not state HKEQGOO stock, lead time, MOQ or final availability.
Official Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment.
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