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QK1301A Low-Voltage Key Charging LED Driver IC
QK1301A Low-Voltage Key Charging LED Driver IC
Single-chip solution integrating linear charger & synchronous boost. 1A rate, 93% efficiency, 10μA standby.
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| Full Part Number | QK1301A |
| Brand / Manufacturer | HICHON |
| Datasheet | Download |
| Package Type | SOT23-6 |
| MOQ / SPQ | 3000/Reel |
| Mounting Style | SMD/SMT |
| Input Voltage Range | 4.5V ~ 5V |
| Output Voltage & Current | Battery Voltage / 1A |
| Output Voltage Range | Battery Voltage (2.6V ~ 4.2V) |
| Output Current Range | 0 ~ 1A |
| Charge Current | Up to 0.5A |
| Charge Voltage | 4.2V（±1.5%） |
| Standby Power Consumption | < 10μA |
| Quiescent Current | 5μA ~ 10μA |
| Peak Current | 1A |
| Switching Frequency | 25kHz (LED Switching Frequency) |
| Topology | Linear Charger + LED Driver |
| RDS(on) | 180mΩ |
| Drive Capability | Up to 1A |
| Supply Voltage | 4.5V ~ 5V |
| Operating Temperature | -40℃ ~ +70℃ |
| Semiconductor Material | Silicon |
| Battery Chemistry | Li-ion / Li-Polymer |
| Battery Cell Count | 1 |
| LED String Count | Series-connected (Multi) |
| Dimming Method | Key 4-Level Dimming: 100% → 20% → 7Hz Strobe → Off |
| Protection Features | OCP, OVP, UVLO (2.6V), OTP (160℃), Reverse Battery Protection, Charge Thermal Derating (130℃) |
| Dimensions | SOT23-6: 2.9×2.8×1.2mm |
| Packaging | Tape & Reel |
QK1301A is a dedicated IC for low-voltage LED lights. It features complete charging functions, comprehensive battery protection circuits and key switch control.
QK1301A supports power-saving mode with static standby current less than 10μA. It is equipped with full battery protection including over-current, over-voltage, constant-current, constant-voltage and thermal protection. When the lithium battery charging voltage is lower than 2.7V, trickle charge is activated to prevent battery damage. When the battery voltage rises above 2.7V, high-current constant-current charging starts. As the voltage approaches 4.2V, the charging current decreases gradually. Once the charging current drops below a preset threshold, the IC terminates charging. The detection error of charging voltage is controlled within ±1.5%.
Features
- Low static standby current (<10μA)
- 0.5A charging current, maximum 1A output current
- Under-voltage protection
- Internal chip over-temperature protection
- Direct single-cell lithium battery charging via USB port
- Preset 4.2V charging voltage
- Complete LED status indication function
- Supports 0V charging
- Trickle charge below 2.7V
- Battery reverse connection protection
- SOT23-6 package
Applications
- protectionlHandheld lamps, flashlights, headlamps, low-voltage bulb lights
Download QK1301A Datasheet
What is the Minimum Order Quantity (MOQ)?
What is the Minimum Order Quantity (MOQ)?
Standard MOQ is 1 Reel. Sample orders are accepted in smaller quantities. Please contact us for custom arrangements.
Are your products guaranteed authentic?
Are your products guaranteed authentic?
All products are genuine, factory-sourced components. Certificate of Analysis (COA) and Datasheet are available upon request. Third-party inspection can be arranged if needed.
What is your sample policy?
What is your sample policy?
Standard samples require a sample fee, which is deductible upon bulk order placement. Free evaluation samples are available for qualified companies. Shipping costs are covered by the buyer or charged to the buyer's courier account.
What payment methods are accepted?
What payment methods are accepted?
We accept T/T (Wire Transfer) with 80% deposit and balance before shipment, PayPal or credit card for small orders, and net terms for established customers upon approval.
What is the lead time?
What is the lead time?
In-stock items ship within 3–7 business days. Custom or bulk orders take 4–12 weeks depending on capacity and materials. Exact lead time will be confirmed upon order placement.
