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MAX8564AEUB Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX8564AEUB Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 15 page General Description The MAX8563/MAX8564/MAX8564A ultra-low-output dual and triple LDO controllers allow flexible and inexpensive point-of-load voltage conversion in motherboards, desknotes, notebooks, and other applications. These parts feature a 0.5V reference voltage with ±1% accuracy providing tight regulation of the output volt- age. The MAX8563 has three n-channel MOSFET con- troller outputs, and the MAX8564/MAX8564A has two controller outputs. Each controller output is adjustable from 0.5V to 3.3V when VDD = 12V and between 0.5V and 1.8V when VDD = 5V. Each output is independently enabled and asserts a POK signal when the output reaches 94% of the set value. Each output is protected against a soft short-circuit condition by an undervoltage comparator that disables the output when it drops to under 80% of the set voltage for more than 50µs. For a catastrophic short condition, the regulators are shut down immediately if the output drops below 60% of the set voltage. The MAX8563 is available in a 16-pin QSOP package, and the MAX8564/MAX8564A are available in a 10-pin µMAX® package. Applications Features ♦ MAX8563: 3 Outputs ♦ MAX8564/MAX8564A: 2 Outputs ♦ ±1% Feedback Regulation ♦ Adjustable Output Voltage Down to 0.5V ♦ Can Use Ceramic Output Capacitors ♦ Wide Supply Voltage Range Permits Operation from 5V or 12V Rails ♦ Individual Enable Control and POK Signal Allows Sequencing ♦ Overload Protection Against Soft Short-Circuit Condition ♦ Undervoltage Short-Circuit Protection ♦ Drive n-Channel MOSFETs ±1%, Ultra-Low Output Voltage, Dual and Triple Linear n-FET Controllers ________________________________________________________________ Maxim Integrated Products 1 Ordering Information 19-3290; Rev 2; 6/06 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. EVALUATION KIT AVAILABLE PART TEMP RANGE PIN- PACKAGE PKG CODE MAX8563EEE -40°C to +85°C 16 QSOP E16-1 MAX8564EUB -40°C to +85°C 10 µMAX U10-2 MAX8564AEUB+ -40°C to +85°C 10 µMAX U10-2 OFF ON OFF ON OFF ON DRV1 FB1 EN1 POK1 GND N.C. DRV3 FB3 VDD DRV2 FB2 EN2 POK2 N.C. POK3 EN3 MAX8563 1.8V ±5% IN C1 C5 R2 R1 C4 OUT1 1.5V/1.5A R3 Q1 POK1 3.3V ±5% IN OUT3 2.5V/2A* C9 C10 C8 Q3 R8 R7 R9 R6 R5 R4 C6 C2 C3 C7 Q2 OUT2 1.05V/3A POK2 POK3 5V OR 12VIN 1.2V ±5% IN *2.5V OUTPUT ONLY WITH VDD = 12V Typical Operating Circuit Pin Configurations appear at end of data sheet. µMAX is a registered trademark of Maxim Integrated Products, Inc. +Denotes lead-free package. Motherboards Dual/Triple Power Supplies Desknotes and Notebooks Graphic Cards Ultra-Low-Dropout Voltage Regulators Low-Voltage DSP, µP, and Microcontroller Power Supplies |
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