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QX7138
Ø Power Supply Voltage: 3.0V~6.0V Ø PWM Dimming Frequency: 200HZ~10KHZ Ø Output Current: 20mA to 3.0A Ø Output Current Accuracy: Better than ±5% Ø Only requires an external resistor and an NMOS tube Ø Voltage can extend to over 400V, current can be extended to 3.0A
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- Product Description
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- Commodity name: QX7138
- 封装: SOT-23-5
- 品牌: Quanxin
Ø Power Supply Voltage: 3.0V~6.0V Ø PWM Dimming Frequency: 200HZ~10KHZ Ø Output Current: 20mA to 3.0A Ø Output Current Accuracy: Better than ±5% Ø Only requires an external resistor and an NMOS tube Ø Voltage can extend to over 400V, current can be extended to 3.0A
QX7138
QX7138 is a PWM dimmable, low dropout linear buck constant current LED driver.
QX7138 only requires an external resistor and an NMOS transistor to form a complete LED constant current drive circuit. Adjusting this external resistor can regulate the output current, which is adjustable from 20mA to 3.0A.
QX7138 can also achieve PWM dimming by applying an external signal to the DIM pin. The frequency range of the input signal to the DIM pin is 200Hz to 10KHz. When dimming functionality is not required, the DIM pin can be left floating.
The normal operating voltage of QX7138 is 3.0V to 6.0V. When the power supply voltage exceeds 6.0V, an external clamping circuit can limit the chip's operating voltage to 6.0V to meet the requirements for high voltage, high current constant current LED driving.
QX7138 adopts the SOT-23-5 package.
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