Key facts
- Brand
- Semtech
- Model
- SC3
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-07-06
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Semtech SC1182/3 Programmable Synchronous DC/DC Converter Datasheet
The $C1182/3 combines a synchronous voltage mode controller with two low-dropout linear regulators to implement three DC/DC converters. The switching section operates at a fixed frequency of 200kHz and features an integrated 5-bit D/A converter for programmable output voltages ranging from 2.0V to 3.5V without external components.
The device includes logic-compatible shutdown, pulse-by-pulse current limiting, and on-chip power good signaling. The linear sections provide fixed or adjustable low-dropout regulation suitable for GTL bus and non-GTL I/O requirements.
Semtech SC3 specifications
| Operating Frequency | 200kHz |
|---|---|
| Efficiency (Switching Section) | 95% |
| Output Voltage Range | 2.0V to 3.5V |
| Voltage Resolution (2.0V-3.5V) | 100mV increments |
| Operating Temperature Range | 0°C to +125°C (Junction) |
Source: Semtech SC1182/3 Programmable Synchronous DC/DC Converter Datasheet
All Semtech SC3 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What microprocessors is this device designed for?
It is designed for Intel Pentium II (Klamath) or Deschutes microprocessor supplies.
From: Semtech SC1182/3 Programmable Synchronous DC/DC Converter Datasheet
Does the switching section require external components for voltage programming?
No, it provides programmability of output voltage with no external components.
From: Semtech SC1182/3 Programmable Synchronous DC/DC Converter Datasheet
Is a heatsink required for the SC1172/3?
No, the synchronous design enables a no heatsink solution.
From: Semtech SC1172/3 Programmable Synchronous DC/DC Converter Datasheet
What is the maximum supply current for the switching section when Voc is 5.0V?
The typical supply current is 8 mA under these conditions.
From: Semtech SC1172/3 Programmable Synchronous DC/DC Converter Datasheet
What is the fixed operating frequency of the SC1162/3 switching section?
The device operates at a fixed frequency of 200kHz.
From: Semtech SC1162/3 Programmable Synchronous DC/DC Converter Datasheet