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MAX15000 Dataheets PDF



Part Number MAX15000
Manufacturers Maxim Integrated Products
Logo Maxim Integrated Products
Description Current-Mode PWM Controllers
Datasheet MAX15000 DatasheetMAX15000 Datasheet (PDF)

www.DataSheet4U.com 19-3957; Rev 0; 1/06 Current-Mode PWM Controllers with Programmable Switching Frequency General Description 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 su.

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www.DataSheet4U.com 19-3957; Rev 0; 1/06 Current-Mode PWM Controllers with Programmable Switching Frequency General Description 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 10pin µMAX® packages and are rated for operation over the -40°C to +85°C temperature range. ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ 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 MAX15000/MAX15001 Ordering Information PART TEMP RANGE PINPACKAGE 10 µMAX 10 µMAX 10 µMAX 10 µMAX PKG CODE U10-2 U10-2 U10-2 U10-2 MAX15000AEUB+ -40°C to +85°C MAX15000BEUB+ MAX15001BEUB+ -40°C to +85°C -40°C to +85°C MAX15001AEUB+ -40°C to +85°C 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 Selector Guide appears at end of data sheet. µMAX is a registered trademark of Maxim Integrated Products, Inc. Warning: The MAX15000/MAX15001 are designed to work with high voltages. Exercise caution. +Denotes lead-free package. Pin Configuration TOP VIEW UVLO/EN 1 UFLG FB COMP CS 2 3 4 5 10 IN 9 VCC NDRV GND RT MAX15000 MAX15001 8 7 6 µMAX 1 ________________________________________________________________ Maxim Integrated Products 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. www.DataSheet4U.com Current-Mode PWM Controllers with Programmable Switching Frequency MAX15000/MAX15001 ABSOLUTE MAXIMUM RATINGS IN to GND ...............................................................-0.3V to +30V IN Clamp (Internal Shunt) Current ........................................5mA VCC to GND ............................................................-0.3V to +13V FB, COMP, UVLO/EN, RT, CS to GND .....................-0.3V to +6V UFLG to GND .........................................................-0.3V to +30V NDRV to GND ............................................-0.3V to (VCC + 0.3V) Continuous Power Dissipation (TA = +70°C) 10-Pin µMAX (derate 5.6mW/°C above +70°C) ........444.4mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range ............................-65°C to +150°C Junction Temperature ......................................................+150°C Lead Temperature (soldering, 10s) .................................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECT.


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