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Overview
| Topology | Buck Converter |
| Input voltage | 4.5-18 V |
| Output 1 | 5 V / 4 A |
Description
The RT6254A is a high-efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 4A output current from a 4.5V to 18V input supply. The RT6254A adopts ACOT architecture to allow the transient response to be improved and keep in constant frequency. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. Fault conditions also include output under voltage protection and thermal shutdown.
Features
- 4.5V to 18V Input Voltage Range
- 4A Output Current
- Constant-on-Time Mode to Enables Fast Transient Response
- Low Output Ripple and Allows Ceramic Output Capacitor
- 500kHz Switching Frequency
- High Efficient Internal Power MOSFET Switch Optimized for Lower Duty Cycle Applications
- Integrated 48mΩ/25mΩMOSFETs
- Adjustable Output Voltage from 0.6V to 5V
- Internal Soft-Start (1.5ms typ.)
- Built-In UVP/OTP
- Power Good Indicator (90%)
- Input Under Voltage Lockout
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | Material | LR (µH) | fres (MHz) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 7443340470 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCC SMT High Current Cube Inductor | 4.7 | 8.9 | 7.7 | 9.5 | 13.5 | Ferrite | 3.5 | 45 |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 7443340470 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | Material | LR (µH) | fres (MHz) | Samples |
|---|