BD1604MUV,BD1604MVV is a backlight LED driver for small LCD panels, which is a charge pump type. The number of external devices is minimized.
The BD1604MUV is a 4‑channel white LED driver designed for small LCD backlights. It uses a charge‑pump architecture to minimise external components and provides up to 120 mA total LED current (30 mA per channel) with high efficiency (≥90 %).
The device includes LED on/off control pins, 3 % current matching accuracy, and protection functions such as output‑voltage protection, current overload limiter and thermal shutdown. Pin‑out diagrams, recommended circuit examples, layout guidelines, electrical characteristics and ordering information are provided.
| Number of LED channels | 4ch |
|---|---|
| Maximum LED current (total) | 120 mA |
| Maximum LED current per channel | 30 mA |
| Operating supply voltage (VBAT) | 2.7 V ~ 5.5 V |
| Power‑supply voltage rating (Vmax) | 7 V |
| Operating temperature range | –30 °C ~ 85 °C |
| Storage temperature range | –55 °C ~ 150 °C |
| LED pin control voltage (VLED) | 0.08 V ~ 0.20 V |
| Over‑current limiter | 600 mA ~ 900 mA |
| LED current accuracy | 0.5 % ~ 5.0 % |
| UVLO detecting voltage | 1.9 V ~ 2.5 V |
Each LED channel can be driven up to 30 mA, giving a total of 120 mA for the four channels.
LED current can be set by an external resistance on the ISET pin or by applying a PWM signal to the EN pin.
The device includes output‑voltage protection, a current overload limiter, and a thermal‑shutdown circuit.
The driver is specified for a supply voltage between 2.7 V and 5.5 V.