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MAX15000AEUB+ Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX15000AEUB+ Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 18 page General Description The MAX15000/MAX15001 current-mode PWM con- trollers contain all the control circuitry required for the design of wide-input-voltage isolated and nonisolated power supplies. The MAX15000 is well suited for uni- versal 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 volt- age 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 volt- age 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 start- up. The MAX15001 does not have the internal bootstrap UVLO and can be biased directly from a minimum volt- age 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% maxi- mum 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 High-Efficiency, Isolated Telecom Power Supplies Networking/Servers Isolated Keep-Alive Power Supplies 12V Boost and SEPIC Regulators Isolated and Nonisolated High-Brightness LED Power Supplies Industrial Power Conversion Features ♦ 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 Current-Mode PWM Controllers with Programmable Switching Frequency ________________________________________________________________ Maxim Integrated Products 1 1 2 3 4 5 10 9 8 7 6 IN VCC NDRV GND COMP FB UFLG UVLO/EN MAX15000 MAX15001 µMAX TOP VIEW RT CS Pin Configuration Ordering Information 19-3957; Rev 0; 1/06 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Warning: The MAX15000/MAX15001 are designed to work with high voltages. Exercise caution. +Denotes lead-free package. Selector Guide appears at end of data sheet. PART TEMP RANGE PIN- PACKAGE PKG CODE MAX15000AEUB+ -40°C to +85°C 10 µMAX U10-2 MAX15000BEUB+ -40°C to +85°C 10 µMAX U10-2 MAX15001AEUB+ -40°C to +85°C 10 µMAX U10-2 MAX15001BEUB+ -40°C to +85°C 10 µMAX U10-2 µMAX is a registered trademark of Maxim Integrated Products, Inc. |
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