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Overview
| Topology | Buck Converter |
| Input voltage | 4.5-36 V |
| Switching frequency | 300-2100 kHz |
| Output 1 | 12 V / 3 A |
Description
The RT2875A/B is a high efficiency, current-mode synchronous DC-DC step-down converter that can deliver up to 3A output current over a wide input voltage range from 4.5V to 36V. The device integrates 95mΩ high-side and 70mΩ low-side MOSFETs to achieve high conversion efficiency. The current-mode control architecture supports fast transient response and simple external compensation. A cycle-by-cycle current limit function provides protection against shorted output and an external soft-start eliminates input current surge during start-up. The RT2875A/B provides complete protection functions such as input under-voltage lockout, output under-voltage protection, over-current protection and thermal shutdown.The RT2875A/B is available in the thermal enhanced TSSOP-14 (Exposed Pad) package.
Features
- 3A Output Current
- Internal N-MOSFETs
- Current Mode Control
- Adjustable Switching Frequency : 300kHz to 2.1MHz
- Adjustable Current Limit : 1.5A to 6A
- Synchronous to External Clock : 300kHz to 2.1MHz
- Adjustable Output Voltage from 0.6V to 24V
- High Efficiency Up to 95%
- Stable with Low ESR Ceramic Output Capacitors
- Cycle-by-Cycle Current Limit
- Input Under-Voltage Lockout
- Output Under-Voltage Protection
- Thermal Shutdown
- AEC-Q100 Grade 2 Certification
- RoHS Compliant and Halogen Free
Typical applications
- Digital Set Top Boxes/ Broadband Communications
- Point of Load Regulator in Distributed Power Systems
- Vehicle Electronics
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) | fres(MHz) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-LHMI SMT Power Inductor, 1 µH, 4.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance1 µH | Performance Rated Current4.5 A | Saturation Current @ 10%5.65 A | Saturation Current @ 30%10 A | DC Resistance47 mΩ | Self Resonant Frequency90 MHz | MountSMT |