Key facts
- Brand
- Maxim
- Model
- MAX1846
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-08
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Maxim MAX1846/MAX1847 Datasheet
The MAX1846 and MAX1847 are high‑efficiency, current‑mode PWM controllers that generate negative output voltages for telecom and networking power supplies. They operate from a 3.0 V to 16.5 V input and can produce -2 V to -200 V output, delivering up to 30 W (MAX1846) or 70 W (MAX1847) while maintaining about 90 % efficiency.
The devices feature programmable switching frequency (100 kHz‑500 kHz), internal soft‑start, over‑current protection, and optional synchronization to an external clock. They are offered in compact 10‑pin UMAX and 16‑pin QSOP packages and are compatible with both ceramic and electrolytic output capacitors.
Maxim MAX1846 specifications
| Operating Input Voltage Range | 3.0 V – 16.5 V |
|---|---|
| Output Voltage Range | -2 V to -200 V |
| Switching Frequency | 100 kHz – 500 kHz |
| Efficiency | ≈90 % |
| Maximum Output Power (MAX1846) | 30 W |
| Maximum Output Power (MAX1847) | 70 W |
Source: Maxim MAX1846/MAX1847 Datasheet
All Maxim MAX1846 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the input voltage range for the MAX1846/MAX1847?
The devices operate from 3.0 V to 16.5 V input.
What switching frequency can be set on these controllers?
The switching frequency is programmable between 100 kHz and 500 kHz.
What is the operating input voltage range for the MAX1846/MAX1847?
The devices operate from 3 V to 16.5 V input.
What is the typical efficiency of these controllers?
Typical efficiency is about 90 %.