Dual-channel Synchronous DC/dc Step-down Controller
This datasheet includes multiple variants, all published together in a single manufacturer document.
| Part number | RT8249B |
|---|---|
| Manufacturer | Richtek |
| File Size | 281.71 KB |
| Description | Dual-Channel Synchronous DC/DC Step-Down Controller |
| Datasheet | RT8249B RT8249A Datasheet (PDF) |
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The RT8249A/B/C is a dual-channel step-down, controller generating supply voltages for battery-powered systems. It includes two Pulse-Width Modulation (PWM) controllers adjustable from 2V to 5.5V, and two fixed 5V/3.3V linear regulators. Each linear regulator provides up to 100mA output current and 3.3V linear regulator provides 1% accuracy under 35mA.
| Part Number | Description |
|---|---|
| RT8249A | Dual-Channel Synchronous DC/DC Step-Down Controller |
| RT8249C | Dual-Channel Synchronous DC/DC Step-Down Controller |
| RT8249D | Dual-Channel Synchronous DC/DC Step-Down Controller |
| RT8240A | High Efficiency Single Synchronous Buck PWM Controller |
| RT8240B | High Efficiency Single Synchronous Buck PWM Controller |
| RT8240C | High Efficiency Single Synchronous Buck PWM Controller |
| RT8241 | High Efficiency Single Synchronous Buck PWM Controller |
| RT8241E | High Efficiency Single Synchronous Buck PWM Controller |
| RT8243A | Main Power Supply Controller |
| RT8243B | Main Power Supply Controller |
