MAX77540
16VIN/6A, Dual-Phase High-Efficiency Buck Converter
High Efficiency and Power Density Single Step Conversions to Core Voltages from USB-C Rails and Multi cell Batteries
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Key Features
Applications/Uses
| VIN (V) (min) | 4 |
| VIN (V) (max) | 16 |
| VOUT1 (V) (min) | 0.5 |
| VOUT1 (V) (max) | 5.2 |
| IOUT1 (A) (max) | 3 |
| Output Adjust. Method | Preset, Resistor, I2C |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| IQ (mA) (typ) | 0.3 |
| # DC-DC Outputs | 2 |
| Switching Frequency (kHz) | 1000 1600 500 |
| Design Tools | EE-Sim |
| Package/Pins | WLP HC/30 |
| Budgetary Price (See Notes) | 0.94 |
Simplified Block Diagram
Technical Docs
| Data Sheet | 16VIN/6A, Dual-Phase High-Efficiency Buck Converter | Sep 20, 2021 |
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 .
Parameters
| VIN (V) (min) | 4 |
| VIN (V) (max) | 16 |
| VOUT1 (V) (min) | 0.5 |
| VOUT1 (V) (max) | 5.2 |
| IOUT1 (A) (max) | 3 |
| Output Adjust. Method | Preset, Resistor, I2C |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| IQ (mA) (typ) | 0.3 |
| # DC-DC Outputs | 2 |
| Switching Frequency (kHz) | 1000 1600 500 |
| Design Tools | generateDesignEESIMUrl('http://maxim.transim.com/pwm2/designreq/Index?partId=29507', '') |
| Package/Pins | WLP HC/30 |
| Budgetary Price (See Notes) | 0.94 |
Key Features
- 4V to 16V Input Voltage Range
- 0.5V to 5.2V Output Voltage Range
- Resistor Configurable Default VOUT
- Two 3A Bucks (1Φ) or One 6A Buck (2Φ)
- ±0.5% VOUT Accuracy (Default VOUT at 25°C)
- 94% Peak Efficiency (7.6VIN, 3.3VOUT, 1MHz)
- Auto SKIP/PWM and Low-Power Mode
- 98% Max. Duty Cycle Dropout Operation
- Programmable Soft-Start/Stop and Ramp-Up/Down Slew Rates
- Pre-Biased Startup and Active Output Discharge
- Programmable Inductor Peak Current Limits
- 0.5/1.0/1.6MHz Nominal Switching Frequency
- Spread-Spectrum Modulation
- Internal/External Frequency Tracking
- Ultrasonic Mode
- Dedicated EN, POK, and FPWM Pins
- Undervoltage lockout (UVLO), Thermal Shutdown, and Short-Circuit Protection
- High-Speed I2C I/F with 3-Slave Address Options
- 30-WLP (2.51mm x 2.31mm) and 24-FC2QFN (3mm x 3mm) Packages
- Less than 55mm2 Total Solution Size
Applications/Uses
- 2/3-Cell Li+ and USB-C Power Delivery Systems
- Audio and Video Equipment
- Microprocessors, field-programmable gate arrays (FPGAs), digital signal processors (DSPs),andapplication-specific integrated circuits (ASICs)
- Networking and PCIe®/redundant array of inexpensive disks (RAID) Cards
Description
The MAX77540 is a high-efficiency step-down converter with two 3A switching phases. It uses an adaptive COT (constant on-time) current-mode control architecture and the two 3A switching phases can be configured as either one (2Φ, 6A) or two (1Φ, 3A each) outputs. Its wide input voltage range enables a direct conversion for sub-1V outputs from 3-cell Li+ batteries, USB PD, and 12VDC supply rails. The output voltages are preset with resistors and are further adjustable through an I2C-compatible interface. With 94% peak efficiency, low quiescent current, and compact solution size, the MAX77540 is ideal for battery powered, space-constraint equipment.
Programmable switching frequency, frequency tracking, spread-spectrum, and ultrasonic mode allow easier system optimization for noise-sensitive applications. Dedicated EN, POK, and FPWMB pins provide options for direct hardware control, while more programmable options, such as soft-start/stop and ramp-up/down slew-rates, are available through I2C. An array of built-in protections insures safe operation under abnormal operating conditions.
Technical Docs
| Data Sheet | 16VIN/6A, Dual-Phase High-Efficiency Buck Converter | Sep 20, 2021 |
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 .
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