MAX1960
2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining
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Key Features
Applications/Uses
| VIN (V) (min) | 2.35 |
| VIN (V) (max) | 5.5 |
| VOUT1 (V) (min) | 0.8 |
| VOUT1 (V) (max) | 5 |
| IOUT1 (A) (max) | 20 |
| Switch Type | External |
| Output Adjust. Method | Resistor |
| Synchronous Switching? | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 1000 |
| Package/Pins | QSOP/20 |
| Budgetary Price (See Notes) | 3.04 |
Simplified Block Diagram
Technical Docs
| Data Sheet | 2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining | Feb 23, 2010 |
Support & Training
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Sampling:
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Parameters
| VIN (V) (min) | 2.35 |
| VIN (V) (max) | 5.5 |
| VOUT1 (V) (min) | 0.8 |
| VOUT1 (V) (max) | 5 |
| IOUT1 (A) (max) | 20 |
| Switch Type | External |
| Output Adjust. Method | Resistor |
| Synchronous Switching? | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 1000 |
| Package/Pins | QSOP/20 |
| Budgetary Price (See Notes) | 3.04 |
Key Features
- 0.5% Accurate Output
- Operates from 2.35V to 5.5V Supply
- Generates Low Output Voltage Down to 0.8V
- On-Chip Charge Pump Provides 5V Gate Drive
- Ceramic or Electrolytic Capacitors
- 94% Efficiency
- External Synchronization from 450kHz to 1.2MHz
- 500kHz/1MHz Fixed-Frequency PWM Operation
- Fast Transient Response
- Two Converters Can Operate 180° Out-of-Phase
- ±4% Voltage Margining for System Test
- 10% Accurate Current Sensing (MAX1962)
- Adaptive Dead Time Prevents Shoot-Through
Applications/Uses
- ASIC, FPGA, DSP, and CPU Core and I/O Voltages
- Cellular Base Stations
- Server and Storage Systems
- Telecom and Network Equipment
Description
Fixed-frequency PWM operation and external synchronization make these controllers suitable for telecom and datacom applications. The operating frequency is programmable to either 500kHz or 1MHz, or from 450kHz to 1.2MHz with an external clock. A clock output is provided to synchronize another converter for 180° out-of-phase operation. A high closed-loop bandwidth provides excellent transient response for applications with dynamic loads.
Lossless current sensing in the MAX1960 and MAX1961 is achieved by monitoring the drain-to-source voltage of the low-side external FET. The current limit is scalable to accommodate a wide variety of MOSFETs and load currents. The MAX1962 has 10% accurate sense-resistor-based current limiting.
The MAX1960 and MAX1962 have an adjustable output voltage from 0.8V to 4.95V. The MAX1961 and MAX1962 have four preset output voltages (1.5V, 1.8V, 2.5V, and 3.3V) and feature 0.5% voltage accuracy over temperature, line, and load variations. The MAX1960 and MAX1961 also feature voltage-margining control inputs that shift the output voltage up or down by 4% for system testing.
Technical Docs
| Data Sheet | 2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining | Feb 23, 2010 |
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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