MAX8538EEI+ Maxim Integrated Products, MAX8538EEI+ Datasheet
MAX8538EEI+
Specifications of MAX8538EEI+
Related parts for MAX8538EEI+
MAX8538EEI+ Summary of contents
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... Power DSP Core Supplies Power Combiner in Advanced VGA Cards Networking Systems RAMBUS Memory Power Supplies ________________________________________________________________ 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. ♦ MAX8537/MAX8539: Complete DDR Supplies ♦ MAX8538: Dual Nontracking Controller ♦ ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies ABSOLUTE MAXIMUM RATINGS V+ to GND ..............................................................-0.3V to +25V AVL GND........................................................-0.3V to +6V PGND to GND .......................................................-0.3V to +0.3V FB_, EN_, POK_ to GND...........................................-0.3V to +6V ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies ELECTRICAL CHARACTERISTICS (continued) (V+ = 12V, EN_ = VL, BST_ = 6V, LX_ = 1V, VL load = 0mA 10nF 1µF, R ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies ELECTRICAL CHARACTERISTICS (continued) (V+ = 12V, EN_ = VL, BST_ = 6V, LX_ = 1V, VL load = 0mA 10nF 1µF, R ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies (Circuit of Figure +25°C, 400kHz switching frequency EFFICIENCY vs. LOAD CURRENT DDQ 100 SENSE RESISTOR = 0Ω 12V IN ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies (Circuit of Figure +25°C, 400kHz switching frequency POWER-OK MAX8537 toc10 V DDQ 2V/div POK1 5V/div V TT 1V/div POK2 5V/div ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies NAME NAME PIN (MAX8537/ (MAX8538) MAX8539) 1 BST2 BST2 2 DH2 DH2 3 LX2 LX2 4 ILIM2 ILIM2 5 POK1 POK1 6 DL2 DL2 7 POK2 POK2 8 ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies NAME NAME PIN (MAX8537/ (MAX8538) MAX8539 DL1 DL1 24 PGND PGND 25 ILIM1 ILIM1 26 LX1 LX1 27 DH1 DH1 28 BST1 BST1 Detailed ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies The MAX8537/MAX8538/MAX8539 step-down DC-DC converters use a PWM voltage-mode control scheme. An internal high-bandwidth (25MHz) operational amplifi used as an error amplifier to regulate the output ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies Figure 1. Typical Application Circuit: MAX8537 DDR Memory Application (400kHz Switching) 10 ______________________________________________________________________________________ ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies Figure 2. MAX8539 DDR Memory Application (400kHz Switching) ______________________________________________________________________________________ 11 ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies Figure 3. MAX8538 PowerPC™ Application (400kHz Switching) PowerPC is a trademark of Motorola, Inc. 12 ______________________________________________________________________________________ ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies Figure 4. MAX8538 Dual-Output Application (1MHz Switching) ______________________________________________________________________________________ 13 ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies Power-Good Signal (POK_) The power-good signal (POK_ open-drain output. The MOSFET turns on and POK_ is held low until FB_ is ±12% from its nominal threshold ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies by 10°C, resulting in a pulsed output during continuous thermal-overload conditions. During a thermal event, the switching converters are turned off, POK1 and POK2 are pulled low, and ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies venting the output capacitor voltage from further devia- tion from its regulating value. Do not exceed the capacitor’s voltage or ripple current ratings. MOSFET Selection The MAX8537/MAX8538/MAX8539 controllers ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies of the inductor ripple current (see the Inductor Selection section the high-side MOSFET DS(ON) is used for current sensing, make sure to use the maxi- ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies where V MOD RAMP V RAMP π ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies OUT GAIN CLOSED-LOOP GAIN (dB) 0 Figure 6. Error-Amplifier Compensation Circuit; Closed-Loop and Error-Amplifier Gain Plot for Case 1 GAIN (dB) 0 Figure 7. Closed-Loop ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies FREQ OSC 1V EN1 COMP1 REFIN SS2 AVL BIAS GND EN2 COMP2 20 ______________________________________________________________________________________ MAX8537/MAX8539 Functional Diagram IMAX SENSE CONTROL LOGIC PWM REF 0.80V SOFT-START EAMP 0.936V OVP1 ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies TOP VIEW BST2 1 DH2 2 LX2 3 ILIM2 4 POK1 5 DL2 6 POK2 7 EN2 8 EN1 9 FREQ 10 COMP2 11 FB2 12 SS2 13 ...
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Dual-Synchronous Buck Controllers for Point-of- Load, Tracking, and DDR Memory Power Supplies 2) Keep separate the power ground plane (connected to the sources of the low-side MOSFETs, pin 24, input capacitor ground, output capacitor ground, and VL decoupling capacitor ground) ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 23 © 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc ...