Device Overview
MP2615CGQ-Z is a 2.1 A switch-mode charger for one-cell or two-cell Li-ion/Li-polymer packs. The MP2615C Rev. 1.1 datasheet specifies a recommended VIN operating range of 4.75 V to 18 V. It supports battery voltage from 2 V to 8.4 V and allows selection of 4.1 V/cell or 4.2 V/cell as the full-charge voltage.
The device uses constant-off-time control rather than a simple fixed-frequency description, allowing duty cycle up to 99% when the battery voltage approaches the input voltage. Charge current is configurable up to 2.1 A.
Confirmed Technical and Ordering Data
| Parameter | Confirmed value | Scope / condition |
|---|---|---|
| Device Function | High-efficiency switch-mode charger for 1-cell or 2-cell Li-ion/Li-polymer batteries | Manufacturer documented |
| Input Voltage | 4.75 to 18 V | Recommended Operating Conditions (MP2615C Rev. 1.1), VIN |
| Output Voltage Or Range | Selectable 4.1 V/cell or 4.2 V/cell full-battery voltage | Manufacturer documented |
| Current Rating | 2.1 A | configurable charge current up to |
| Switching Frequency | Constant-off-time control with duty cycle up to 99% | not a fixed-frequency headline |
| Accuracy | ±0.75 % | full-battery voltage accuracy |
| UVLO Rising Threshold | 3.55 V min; 3.75 V typ; 3.95 V max | Under-voltage lockout threshold; not the recommended VIN lower limit |
| Protection Features | Reverse blocking; thermal shutdown; cycle-by-cycle over-current protection; battery temperature monitoring; safety timer | Manufacturer documented |
| Battery Voltage | 2 to 8.4 V | recommended battery-voltage range |
| Exact Package | QFN-16, 3 mm x 3 mm GQ-Z exact orderable | Manufacturer documented |
| Temperature Grade | -40 to 85 °C | operating junction-temperature range |
Engineering Selection Guidance
Input-voltage scope: use 4.75 V to 18 V as the recommended VIN operating range from the MP2615C Rev. 1.1 datasheet. The same datasheet lists the UVLO rising threshold separately as 3.55 V minimum, 3.75 V typical and 3.95 V maximum; 3.95 V is a protection threshold, not the recommended operating-input minimum.
Cell count and full-charge voltage selection must be considered together. A one-cell design and a two-cell design use the same IC but not the same final battery voltage, so the 4.1 V/4.2 V selector is a per-cell setting rather than a total-pack output specification.
The 99% duty-cycle capability helps maintain charge current with low input-to-battery headroom, but it should not be confused with efficiency or a fixed switching-frequency rating. The control method is constant-off-time and operating behavior changes with conversion conditions.
Internal reverse blocking, battery-temperature monitoring, a safety timer, cycle-by-cycle over-current protection and thermal shutdown protect the charging path. The GQ-Z orderable uses QFN-16 (3 mm x 3 mm) and is specified for -40 to 85 °C operating junction temperature.
Lifecycle and Procurement
Monolithic Power Systems currently lists MP2615CGQ-Z as an active exact orderable. The exact package is QFN-16, 3 mm x 3 mm. The documented temperature information used for this exact part is -40 to 85 °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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