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Overview
| Topology | Buck Converter |
| Input voltage | 4.5-18 V |
| Output 1 | 5 V / 6 A |
Description
The RT6257A is a high-efficiency, monolithic synchronous step-down DC-DC converter that can deliver up to 6A output current from a 4.5V to 18V input supply. The RT6257A 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
- 6A 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 30m/20mMOSFETs
- Adjustable Output Voltage from 0.6V to 5V
- Internal Soft-Start (1.5ms typ.)
- Built-In UVP/OTP
- Input Under Voltage Lockout
- TSOT23-6 (FC) Package
Typical applications
- Portable TV
- Access Point Router/ Set Top Box/ DSL Modem
- LCD TV
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 74437368033 | SPEC | 8 files | WE-LHMI SMT Power Inductor | 3.3 | 11.1 | 15.6 | 31.2 | 11.8 | 22 | SMT |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 74437368033 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Samples |
|---|