MP2451DT-LF-Z
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | SOT-23-6 |
| Mfr | Monolithic Power Systems Inc. |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Voltage - Input (Max) | 36V |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Current - Output | 600mA |
| Supplier Device Package | SOT-23-6 |
| Output Configuration | Positive |
| Function | Step-Down |
| Topology | Buck |
| Frequency - Switching | 2MHz |
| Synchronous Rectifier | No |
| Voltage - Output (Min/Fixed) | 0.8V |
| Voltage - Output (Max) | 28.8V |
| Voltage - Input (Min) | 3.3V |
| Package | Tape & Reel (TR) |
| Product Status | Not For New Designs |
| Base Product Number | MP2451 |
| REACH Status | REACH Unaffected |
| Standard Package | 3,000 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
MP2451DT-LF-Z step-down DC-DC converter IC Positive Adjustable 0.8V 1 Output 600mA
The MP2451DT-LF-Z from MPS is a high-efficiency, 0.6A, 36V input step-down (buck) DC-DC converter housed in a compact SOT-23-6 package. Designed for robust performance in industrial and automotive environments, it operates from a wide 3.3V to 36V input range and delivers an adjustable output from 0.8V to 28.8V via an external resistor divider. The chip integrates a 500mΩ internal high-side MOSFET and operates at a fixed 2MHz switching frequency, allowing for a small external inductor and ceramic output capacitors, which minimizes the total solution footprint. Key protection features include cycle-by-cycle current limiting, thermal shutdown, and under-voltage lockout (UVLO), ensuring reliable operation. With a low 130µA quiescent current and an ultra-low 3µA shutdown current, it is optimized for battery-powered applications requiring extended runtimes. The device is fully specified over the -40°C to +125°C junction temperature range and is suitable for a broad range of power conversion tasks.
MP2451DT-LF-Z buck converter Applications
● Industrial & Automotive Systems: Power modules for PLCs, sensors, and 12V/24V bus-powered control systems requiring wide input tolerance.
● Consumer Electronics: Set-top boxes, routers, and portable devices where space-efficient power conversion is critical.
● Battery-Powered Equipment: Handheld instruments and IoT devices leveraging the low standby current for long battery life.
● Distributed Power Architecture: Point-of-load (POL) voltage regulation from an intermediate bus voltage.
Alternative regulator models
1. MP2451DJ-LF-Z: The same MP2451 chip but supplied in a TSOT-23-6 package, offering an even smaller footprint for space-constrained designs.
2. MP2460DJ-LF-Z: A synchronous buck converter from MPS with higher efficiency (integrated low-side FET) and a wider 4.5V-45V input range.
3. LM2674M-ADJ (Texas Instruments): A 500mA, 40V input step-down regulator in an SOIC-8 package, providing a similar non-synchronous buck function.
4. AP3406ASET-ADJ (Diodes Incorporated): A 600mA, 36V asynchronous buck converter with a 340kHz switching frequency, suitable for lower-noise applications.
