MAX5089
2.2MHz, 2A Buck Converters with an Integrated High-Side Switch
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Up to 2.2MHz Switching Frequency Prevents Harmonics from Interfering in the ADSL2+ and Automotive AM Radio Frequency Bands
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Features
- 4.5V to 5.5V or 5.5V to 23V Input Voltage Range
- Output Voltage Adjustable Down to 0.6V
- 2A Output Current
- Synchronous Rectifier Driver Output (MAX5089) for Higher Efficiency
- Resistor-Programmable Switching Frequency from 200kHz to 2.2MHz
- External Synchronization and Enable (On/Off) Inputs
- Clock Output for Driving Second Converter 180° Out-Of-Phase (MAX5089)
- Integrated 150mΩ High-Side n-Channel Power MOSFET
- Power-On Reset Output (MAX5088)/Power-Good Output (MAX5089)
- Short-Circuit Protection
- Thermal-Shutdown Protection
- Thermally Enhanced 16-Pin TQFN Package Dissipates 2.7W
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The MAX5088/MAX5089 high-frequency, DC-DC converters with an integrated n-channel power MOSFET provide up to 2A of load current. The MAX5088 includes an internal power MOSFET to enable the design of a nonsynchronous buck topology power supply. The MAX5089 is for the design of a synchronous buck topology power supply. These devices operate from a 4.5V to 5.5V or 5.5V to 23V input voltage and a 200kHz to 2.2MHz resistor-programmable switching frequency. The voltage-mode architecture with a peak switch current-limit scheme provides stable operation up to a 2.2MHz switching frequency. The MAX5088 includes a clock output for driving a second DC-DC converter 180° out-of-phase and a power-on-reset (RESET-bar) output. The MAX5089 includes a power-good output and a synchronous rectifier driver to drive an external low-side MOSFET in the buck converter configuration for high efficiency.
The MAX5088/MAX5089 protect against overcurrent conditions by utilizing a peak current limit as well as overtemperature shutdown providing a very reliable and compact power source for point-of-load regulation applications. Additional features include synchronization, internal digital soft-start, and an enable input. The MAX5088/MAX5089 are available in a thermally enhanced, space-saving 16-pin TQFN (5mm x 5mm) package and operate over the -40°C to +125°C temperature range.
Applications
- Automotive Radio Power Supply
- IP Phones/WLAN Access Points
- Servers and Networks
- xDSL Modem Power Supply
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MAX5089
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Data Sheet
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MAX5088-MAX5089: 2.2MHz, 2A Buck Converters with an Integrated High-Side Switch Data Sheet (Rev.1)
MAX5088-MAX5089_cn: 2.2MHz、2A buck转换器，集成高边开关 Data Sheet (Rev.1)
Documentation
Software & Part Ecosystem
| Parts | Product Life Cycle | Description | ||
|---|---|---|---|---|
|
Internal Power Switch Boost Regulators2 |
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PRODUCTION |
2.2MHz, Dual-Output Buck or Boost Converter with Internal Power MOSFETs |
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PRODUCTION |
2.2MHz, Dual-Output Buck or Boost Converter with POR and Power-Fail Output |
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Internal Power Switch Buck Regulators2 |
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|
PRODUCTION |
1.5A, 40V, MAXPower Step-Down DC-DC Converters |
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|
PRODUCTION |
1.5A, 40V, MAXPower Step-Down DC-DC Converters |
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