MP4459DQT-LF-Z
ActiveCONV DC-DC SINGLE STEP DOWN 4.5V TO 36V T/R
Deep-Dive with AI
Search across all available documentation for this part.
MP4459DQT-LF-Z
ActiveCONV DC-DC SINGLE STEP DOWN 4.5V TO 36V T/R
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | MP4459DQT-LF-Z |
|---|---|
| Current - Output | 1.5 A |
| Frequency - Switching [Max] | 4 MHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 10-WFDFN Exposed Pad |
| Supplier Device Package | 10-TQFN (3x3) |
| Synchronous Rectifier | False |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 36 V |
| Voltage - Input (Min) [Min] | 3.8 V |
| Voltage - Output (Max) [Max] | 30 V |
| Voltage - Output (Min/Fixed) | 0.8 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 3.29 | |
| 10 | $ 2.96 | |||
| 25 | $ 2.80 | |||
| 100 | $ 2.42 | |||
| 250 | $ 2.30 | |||
| 500 | $ 2.06 | |||
| 1000 | $ 1.74 | |||
| 2500 | $ 1.65 | |||
| Digi-Reel® | 1 | $ 3.29 | ||
| 10 | $ 2.96 | |||
| 25 | $ 2.80 | |||
| 100 | $ 2.42 | |||
| 250 | $ 2.30 | |||
| 500 | $ 2.06 | |||
| 1000 | $ 1.74 | |||
| 2500 | $ 1.65 | |||
| Tape & Reel (TR) | 5000 | $ 1.59 | ||
Description
General part information
MP4459 Series
The MP4459 is a high frequency step-down switching regulator with an integrated internal high-side high voltage power MOSFET. It provides 1.5A output with current mode control for fast loop response and easy compensation. The wide 3.8V to 36V input range accommodates a variety of step-down applications, including those in automotive systems. A 120µA operational quiescent current is suitable for use in battery-powered applications. The frequency foldback helps prevent inductor current runaway during startup and thermal shutdown provides reliable, fault tolerant operation. In some applications, such as AM radio and ADSL applications, in which the device is sensitive to frequency band, the MP4459 can avoid the related EMI problem by setting the frequency at 4MHz. The MP4459 is available in thin 10-pin 3mm x 3mm TQFN package.120µA Quiescent Current Wide 3.8V to 36V Operating Input Range 150m? Internal Power MOSFET Up to 4MHz Programmable Switching Frequency Ceramic Capacitor Stable Internal Soft-Start Precision Current Limit without a Current Sensing Resistor Up to 95% Efficiency Output Adjustable from 0.8V to 30V Available in 10-Pin 3x3mm TQFN Package
Documents
Technical documentation and resources