MAX16955
36V, 1MHz Step-Down Controller with Low Operating Current
Automotive Synchronous Step-Down Controller Uses Only 50µA of Quiescent Current at No Load
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Key Features
Applications/Uses
| VIN (V) (min) | 3.5 |
| VIN (V) (max) | 36 |
| VOUT1 (V) (min) | 1 |
| VOUT1 (V) (max) | 10 |
| IOUT1 (A) (max) | 5 |
| Switch Type | External |
| Preset VOUT (V) | 5 |
| Output Adjust. Method | Preset Resistor |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 1000 |
| Package/Pins | TSSOP/16 |
| Budgetary Price (See Notes) | 2.66 |
Simplified Block Diagram
Technical Docs
| Data Sheet | 36V, 1MHz Step-Down Controller with Low Operating Current | Aug 27, 2014 |
Support & Training
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Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
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Parameters
| VIN (V) (min) | 3.5 |
| VIN (V) (max) | 36 |
| VOUT1 (V) (min) | 1 |
| VOUT1 (V) (max) | 10 |
| IOUT1 (A) (max) | 5 |
| Switch Type | External |
| Preset VOUT (V) | 5 |
| Output Adjust. Method | Preset Resistor |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 1000 |
| Package/Pins | TSSOP/16 |
| Budgetary Price (See Notes) | 2.66 |
Key Features
- Wide 3.5V to 36V Input Voltage Range
- 42V Input Transient Tolerance
- High Duty Cycle During Undervoltage Transients
- 220kHz to 1MHz Adjustable Switching Frequency
- Current-Mode Control Architecture
- Adjustable (1V to 10V) Output Voltage with ±2% Accuracy
- Three Operating Modes
- 50µA Ultra-Low Quiescent Current Skip Mode
- Forced Fixed-Frequency Mode
- External Frequency Synchronization
- Lowest BOM Count, Current-Mode Control Architecture
- Power-Good Output
- Enable Input Compatible from 3.3V Logic Level to 42V
- Current-Limit, Thermal Shutdown, and Overvoltage Protection
- -40°C to +125°C Automotive Temperature Range
- Automotive Qualified
Applications/Uses
- Automotive
- Industrial
- Military
- Point of Load
Description
The MAX16955 operates in fixed-frequency PWM mode and low quiescent current skip mode. It features an enable logic input, which is compatible up to 42V to disable the device and reduce its shutdown current to 10µA. Protection features include overcurrent limit, overvoltage, undervoltage, and thermal shutdown with automatic recovery. The device also features a powergood monitor to ease power-supply sequencing.
The MAX16955 is available in a thermally enhanced 16-pin TSSOP package with exposed pad and is specified for operation over the -40°C to +125°C automotive temperature range.
Technical Docs
| Data Sheet | 36V, 1MHz Step-Down Controller with Low Operating Current | Aug 27, 2014 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
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