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The AP3612 is a high efficiency boost controller with 12-string current sources for driving W°C backlight. It operates over a wide input voltage range from 4.5V to 33V. The current of 12 strings are simply programmed from 20mA to 75mA with an external resistor. The current matching between each string is 1.5% (Typ). Its operating frequency can be adjusted from 0.1MHz to 1MHz. The AP3612 features Cycle-by-cycle Current Limit, Soft Start, Under Voltage Lock Out (UVLO) protection, programmable OVP, Over Temperature Protection (OTP), open/short °C protection, VOUT short protection and Schottky diode short-circuit protection.
| Dimming | PWM |
|---|---|
| Efficiency (%) | 95 |
| Function | Boost Controller with Current Sink |
| MaximumInput Voltage (V) | 33 |
| Maximum Output Current per Channel | 75 |
| Maximum Output Voltage (V) | 60 |
| MinimumInput Voltage (V) | 4.5 |
| Number of Regulated Output Channels | 12 |
| OperatingTemperatureRange (°C) | -40 to 85 |
| OVP | Yes |
| Quiescent Current (µA) | 3 |
| Soft Start | Yes |
| Standby Quiescent Current (µA) | 0.1 |
| SW RDS(ON) | N/A |
| Switching Frequency (MHz) | ADJ 0.1 to 1 |
| Typical Over-Current Protection Current | 540/RCS |
| VFB | N/A |
A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.
| PCN # | Issue Date | Implementation Date | Subject |
|---|---|---|---|
| PCN-2380 | 2018-11-07 | 2019-05-07 | Device End of Life (EOL) |
