The AN8049FHN is a three-channel PWM DC-DC converter control IC that features low-voltage operation. This IC can form a power supply that provides two step-up outputs and one step-down or polarity inverted output with a minimal number of external components.
The AN8049FHN is a three-channel PWM DC-DC converter control IC designed for low-voltage operation starting at 1.8V. It is housed in an ultrathin 4-directional-lead SMD package with a maximum thickness of 0.8 mm and a pin pitch of 0.5 mm, making it suitable for miniaturized power supplies.
The IC features two step-up outputs and one step-down or polarity-inverted output. It supports a wide output frequency range from 20 kHz to 1 MHz and includes on/off control pins for each channel to facilitate sequence control. The device incorporates a timer latch short-circuit protection circuit and a low input voltage malfunction prevention circuit (U.V.L.O.) with an operation start voltage of 1.67 V typical.
| Minimum operating supply voltage | 1.8 V |
|---|---|
| Package type | QFN-24 |
| Package thickness | 0.8 mm maximum |
| Pin pitch | 0.5 mm |
| Operating supply voltage range | 1.8 V to 14 V |
| Output frequency range | 20 kHz to 1 MHz |
| Fixed duty factor | 86% |
| Operating temperature range | -30 to +85 °C |
The IC can operate from as low as 1.8 V, allowing it to run from 2 dry batteries.
It is a three-channel PWM DC-DC converter control IC.
The operation start voltage is 1.67 V typical.