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The MAX77756 is a synchronous 500mA step-down DC-DC converter with integrated dual-input power multiplexer (MUX). The converter operates on an input supply as low as 3.0V and as high as 24V. Default output voltage is factory-programmed to either 1.8V, 3.3V, or 5.0V. Output voltage is further adjustable through external resistors or an I2C serial interface.
The dual-input power MUX selects the higher voltage from two different input sources to power the step-down converter. Control circuitry ensures that only one channel of the MUX is on at a time to prevent cross-conduction between input sources. For single-input applications, the MUX can be bypassed and the step-down converter can be powered directly from the SUP pin.
The MAX77756 is available in a small 2.33mm × 1.42mm (0.7mm max height), 15-bump wafer-level package (WLP). For a similar buck converter without a power MUX, refer to the MAX77596.
The dual-input power MUX selects the higher voltage from two different input sources to power the step-down converter. Control circuitry ensures that only one channel of the MUX is on at a time to prevent cross-conduction between input sources. For single-input applications, the MUX can be bypassed and the step-down converter can be powered directly from the SUP pin.
The MAX77756 is available in a small 2.33mm × 1.42mm (0.7mm max height), 15-bump wafer-level package (WLP). For a similar buck converter without a power MUX, refer to the MAX77596.
Design Solution: Pack More Power in Your Cool, Small Smart-Home Hub ›
主要特征
- Wide Input Power Supply
- 3V to 24V Supply Voltage
- 500mA (max) Output Current
- 1.8V, 3.3V, or 5.0V Factory-Set VOUT with Optional I2C Control: 1.5V to 7.5V in 50mV Steps
- External Feedback Resistor VOUT Option (1V to 99% VSUP)
- Hardware or Software Enable
- Dual-Input Power MUX Replaces Common-Cathode Diode Arrays
- Automatic Ideal-Diode ORing Voltage Selector
- 250mΩ MOSFETs Minimize Power Consumption, BOM, and Solution Size
- Low IQ Enables Always-On Rails
- 1.5µA Quiescent Current (Only SUP Powered)
- 19µA Quiescent Current (IN1/IN2 Powered)
- 88% Peak Efficiency (12VSUP, 3.3VOUT)
- Safe and Easy to Use
- Short-Circuit and Thermal Protection
- 8ms Soft-Start
- Software-Enabled Spread Spectrum
- Pin-Programmable Inductor Peak Current Level
- Small Size
- 2.33mm × 1.42mm (0.7mm max height) Wafer-Level Package (WLP)
- 15-Bump, 0.4mm Pitch, 3 × 5 Array
应用/用途
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- 笔记本电脑和平板电脑
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Parametric specs for Step-Down Switching Regulators
| VIN (V) (min) | 3 |
| VIN (V) (max) | 24 |
| VOUT1 (V) (min) | 1.5 |
| VOUT1 (V) (max) | 7.5 |
| IOUT1 (A) (max) | 0.5 |
| Switch Type | Internal |
| Preset VOUT (V) | 5 |
| Output Adjust. Method | Digital/VID Preset |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 1000 |
| Design Tools | EE-Sim |
| Package/Pins | WLP/15 |
| Budgetary Price (See Notes) | $0.49 @1k |
查看更多
技术文档
| 数据资料 | 24V Input, 500mA Buck Regulator with Dual-Input Power MUX | Nov 08, 2017 | |
| solutionguides | USB-C and USB Power Delivery Solutions |
单击下面的标题以查看详情页面
描述
The MAX77756 evaluation kit (EV kit) is a fully assembled and tested PCB that demonstrates the MAX77756 synchronous 500mA step-down converter. The EV kit allows for easy evaluation of the IC’s input power multiplexer and step-down converter. A dual-range (8mA and 800mA full scale) electronic load is included on the EV kit for easy buck converter load control.
Windows®-based software provides a user-friendly graphical user interface (GUI), as well as a detailed register-based interface to exercise the features of the IC.
查看详情特征
- Easy to Use
- Evaluates Both Fixed-Output and Adjustable- Output Versions (3.3V Version Preinstalled)
- 3V to 24V Input Voltage Range
- Demonstrates 1.5µA Quiescent Current at 12VSUP Input
- GUI Drives I2C Interface
- Emulates System Loading
- On-Board Electronic Load
- Electronic Load has Steady-State, Transient, and Random Modes
- Optional Ability to Control Electronic Load through Function Generator for Patterned Load Waveforms
- Proven PCB Layout
- Fully Assembled and Tested
/cn/design/design-tools/ee-sim.html?
 | 工具和模型 EE-Sim: 设计和仿真MAX77756 | 创建设计 |
参量
Parametric specs for Step-Down Switching Regulators
| VIN (V) (min) | 3 |
| VIN (V) (max) | 24 |
| VOUT1 (V) (min) | 1.5 |
| VOUT1 (V) (max) | 7.5 |
| IOUT1 (A) (max) | 0.5 |
| Switch Type | Internal |
| Preset VOUT (V) | 5 |
| Output Adjust. Method | Digital/VID Preset |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 1000 |
| Design Tools | EE-Sim |
| Package/Pins | WLP/15 |
| Budgetary Price (See Notes) | $0.49 @1k |
主要特征
- Wide Input Power Supply
- 3V to 24V Supply Voltage
- 500mA (max) Output Current
- 1.8V, 3.3V, or 5.0V Factory-Set VOUT with Optional I2C Control: 1.5V to 7.5V in 50mV Steps
- External Feedback Resistor VOUT Option (1V to 99% VSUP)
- Hardware or Software Enable
- Dual-Input Power MUX Replaces Common-Cathode Diode Arrays
- Automatic Ideal-Diode ORing Voltage Selector
- 250mΩ MOSFETs Minimize Power Consumption, BOM, and Solution Size
- Low IQ Enables Always-On Rails
- 1.5µA Quiescent Current (Only SUP Powered)
- 19µA Quiescent Current (IN1/IN2 Powered)
- 88% Peak Efficiency (12VSUP, 3.3VOUT)
- Safe and Easy to Use
- Short-Circuit and Thermal Protection
- 8ms Soft-Start
- Software-Enabled Spread Spectrum
- Pin-Programmable Inductor Peak Current Level
- Small Size
- 2.33mm × 1.42mm (0.7mm max height) Wafer-Level Package (WLP)
- 15-Bump, 0.4mm Pitch, 3 × 5 Array
应用/用途
- null
- null
- 笔记本电脑和平板电脑
- null
描述
The MAX77756 is a synchronous 500mA step-down DC-DC converter with integrated dual-input power multiplexer (MUX). The converter operates on an input supply as low as 3.0V and as high as 24V. Default output voltage is factory-programmed to either 1.8V, 3.3V, or 5.0V. Output voltage is further adjustable through external resistors or an I2C serial interface.
The dual-input power MUX selects the higher voltage from two different input sources to power the step-down converter. Control circuitry ensures that only one channel of the MUX is on at a time to prevent cross-conduction between input sources. For single-input applications, the MUX can be bypassed and the step-down converter can be powered directly from the SUP pin.
The MAX77756 is available in a small 2.33mm × 1.42mm (0.7mm max height), 15-bump wafer-level package (WLP). For a similar buck converter without a power MUX, refer to the MAX77596.
The dual-input power MUX selects the higher voltage from two different input sources to power the step-down converter. Control circuitry ensures that only one channel of the MUX is on at a time to prevent cross-conduction between input sources. For single-input applications, the MUX can be bypassed and the step-down converter can be powered directly from the SUP pin.
The MAX77756 is available in a small 2.33mm × 1.42mm (0.7mm max height), 15-bump wafer-level package (WLP). For a similar buck converter without a power MUX, refer to the MAX77596.
Design Solution: Pack More Power in Your Cool, Small Smart-Home Hub ›
技术文档
| 数据资料 | 24V Input, 500mA Buck Regulator with Dual-Input Power MUX | Nov 08, 2017 | |
| solutionguides | USB-C and USB Power Delivery Solutions |
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