Key facts
- Brand
- Maxim
- Model
- MAX1745
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-04
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Maxim MAX1744/MAX1745 Datasheet
The MAX1744 and MAX1745 are high‑voltage step‑down DC‑DC controller ICs designed for automotive, telecom and other industrial‑control applications. They operate from 4.5 V to 36 V input and can deliver up to 50 W of output power while maintaining low quiescent current.
Key features include a proprietary current‑limited control scheme, up to 330 kHz switching frequency, 100 % duty‑cycle operation for low dropout, selectable 3.3 V or SV output (MAX1744) and an external feedback network for a 1.25 V‑18 V adjustable output (MAX1745). The devices are supplied in a 10‑pin UMAX package and are intended for space‑critical designs.
Maxim MAX1745 specifications
| Input Voltage Range | 4.5 V – 36 V |
|---|---|
| Supply Current (typical) | 140 µA |
| Shutdown Supply Current (typical) | 12 µA |
| Adjustable Output Voltage (MAX1745) | 1.25 V – 18 V |
| Efficiency | >90 % |
| Maximum Switching Frequency | 330 kHz |
| Quiescent Current | 90 µA |
| Shutdown Current | 4 µA |
| Package | 10‑pin UMAX |
Source: Maxim MAX1744/MAX1745 Datasheet
All Maxim MAX1745 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum input voltage for the MAX1744/MAX1745?
The devices can operate with an input voltage up to 36 V.
What is the typical efficiency of the MAX1744/MAX1745?
Typical efficiency is greater than 90 %.
What input voltage range does the MAX1744 support?
The device operates from 4.5 V up to 36 V input.
From: Maxim MAX1744/MAX1745 High-Voltage Step-Down DC-DC Controller Datasheet
What fixed output voltages are available for the MAX1744?
The MAX1744 provides a selectable fixed output of either 3.3 V or 5 V.
From: Maxim MAX1744/MAX1745 High-Voltage Step-Down DC-DC Controller Datasheet