MAX15001
Current-Mode PWM Controllers with Programmable Switching Frequency
Isolated/Nonisolated Current-Mode PWM Controllers in Tiny 10-Pin µMAX Packages with Adjustable Frequency from 12.5kHz to 625kHz
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Overview
Features and Benefits
- Current-Mode Control
- Programmable Switching Frequency Up to 625kHz
- Accurate UVLO Threshold (1%)
- Open-Drain UVLO Flag Output with Internal Delay
- 36V to 72V Telecom Voltage Range
- Universal Offline Input Voltage Range
- Rectified 85VAC to 265VAC (MAX15000)
- 9.5V to 24V Input (MAX15001)
- Digital Soft-Start
- Internal Bootstrap UVLO With Large Hysteresis (MAX15000)
- Internal Error Amplifier with 1.5% Accurate Reference
- 50µA (typ) Startup Supply Current
- 50% Maximum Duty-Cycle Limit (MAX15000A/MAX15001A)
- 75% Maximum Duty-Cycle Limit (MAX15000B/MAX15001B)
- 60ns Cycle-by-Cycle Current-Limit Propagation Delay
- Available in Tiny 10-Pin µMAX Packages
Product Details
The MAX15000/MAX15001 current-mode PWM controllers contain all the control circuitry required for the design of wide-input-voltage isolated and nonisolated power supplies. The MAX15000 is well suited for universal input (rectified 85VAC to 265VAC) or telecom (-36VDC to -72VDC) power supplies. The MAX15001 is well suited for low input voltage (9.5VDC to 24VDC) power supplies.
The MAX15000/MAX15001 contain an internal error amplifier that regulates the tertiary winding output voltage which is used in primary-side regulated isolated power supplies. Primary-side regulation eliminates the need for an optocoupler. An input undervoltage lockout (UVLO) is provided for programming the input-supply start voltage and to ensure proper operation during brownout conditions. An open-drain UVLO flag output, with 210µs internal delay, allows the sequencing of a secondary-side controller. The input-supply start voltage is externally programmable with a voltage divider. A UVLO/EN input is used to shutdown the MAX15000/MAX15001. Internal digital soft-start eliminates output voltage overshoot.
The MAX15000 has an internal bootstrap UVLO with large hysteresis that requires a minimum 23.6V for startup. The MAX15001 does not have the internal bootstrap UVLO and can be biased directly from a minimum voltage of 9.5V.
The switching frequency for the MAX15000/MAX15001 is programmable with an external resistor. The MAX15000A/MAX15001A provide a 50% maximum duty-cycle limit, while the MAX15000B/MAX15001B provide a 75% maximum duty-cycle limit. These devices are available in 10-pin µMAX® packages and are rated for operation over the -40°C to +85°C temperature range.
Applications
- 1/2, 1/4, and 1/8th Brick Power Modules
- 12V Boost and SEPIC Regulators
- High-Efficiency, Isolated Telecom Power Supplies
- Industrial Power Conversion
- Isolated and Nonisolated High-Brightness LED Power Supplies
- Isolated Keep-Alive Power Supplies
- Networking/Server
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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
Product Recommendations
MAX15001 Companion Parts
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| MAX15001AEUB+ | Material Declaration | Reliability Data | 10-MINI_SO-N/A | |
| MAX15001AEUB+T | Material Declaration | Reliability Data | 10-MINI_SO-N/A | |
| Wafer Fabrication Data |
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