MAX8664BEEP+ Maxim Integrated Products, MAX8664BEEP+ Datasheet
MAX8664BEEP+
Specifications of MAX8664BEEP+
Related parts for MAX8664BEEP+
MAX8664BEEP+ Summary of contents
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... Out-of-Phase Operation Reduces Input Ripple Current o Overcurrent and Overvoltage Protection o External Reference Input for Second Controller o Prebiased Startup Operation PART MAX8664AEEP+ MAX8664BEEP+ Note: This device operates over the -40°C to +85°C operating temperature range. + Denotes lead-free package. IN2 Applications OUT2 ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response ABSOLUTE MAXIMUM RATINGS IN to GND ...........................................................…-0.3V to +30V VL to GND...................................................................-0.3 to +8V IN, BST_ to VL ........................................................-0.3V to +30V V , FB_, PWRGD to GND.......................................-0. ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response ELECTRICAL CHARACTERISTICS (continued 12V GND = 56.1kΩ, REFIN2 = V IN OSC/EN12 T = +25°C.) (Note 2) A PARAMETER PROTECTION FEATURES V Overvoltage Protection (OVP) Threshold V V ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response (Circuit of Figure 2, 600kHz 12V EFFICIENCY vs. LOAD CURRENT (600kHz, FIGURE 2) 100 2.5V OUT 1.8V ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response (Circuit of Figure 2, 600kHz 12V POWER-DOWN WAVEFORMS OUT1 V OUT2 V PRWGD 1ms/div ENABLE WAVEFORMS (FIGURE 4) MAX8664 toc11 ENABLE V OUT1 V OUT2 ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response PIN NAME High-Side MOSFET Driver Output for Controller 1. Connect DH1 to the gate of the high-side MOSFET. DH1 is 1 DH1 low in shutdown and UVLO. External Inductor Connection for Controller ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response PIN NAME Internal Analog Supply When using a 4.5V to 5.5V supply, connect a 10Ω resistor from V CC internal circuitry. Open-Drain Power-Good Output. PWRGD is high impedance when ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response V CC BIAS GENERATOR VOLTAGE REFERENCE REF EN SOFT-START 1 SHUTDOWN 1 FB1 0.6V S2 FB2 REF2 S1 REFIN2 IF V > 2.0V REFIN2 OPEN S1 AND CLOSE S2. OTHERWISE, CLOSE S1 ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response Detailed Description The MAX8664 dual-output PWM controller is a low-cost solution for dual power-supply systems. It provides two individual outputs that operate 180° out-of-phase to minimize input capacitance requirements. Built-in dri- vers ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response The threshold that trips overcurrent protection is set by a resistor connected from ILIM_ to the drain of the high- side MOSFET(s). ILIM_ sinks 50µA (typ) through this resistor. When the drain-source ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response INPUT FB1 10.8V TO 13.2V IN C17 1μ C18 1μF REFIN2 VL C14 4.7μF MAX8664 GND VCC R9 POWER-GOOD 10kΩ TO SYSTEM PWRGD R10 39.2kΩ OSC/EN12 ENABLE N9 2N7002 ON ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response Table 2. Component List for Figure 2 DESIGNATION QTY DESCRIPTION C1, C3, 10µF ±20%, 16V X5R ceramic 4 C20, C21 capacitors (1206) 1000µF ±20%, 16V electrolytic C4 1 capacitor (8mm diameter, 20mm ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response FB1 INPUT 10V TO 14V IN C5 1μ 1μF R6 OUT1 1kΩ REFIN2 VL C12 C13 R7 1000pF 4.7μF 1kΩ GND VCC R9 10kΩ POWER-GOOD PWRGD TO SYSTEM R10 ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response Table 3. Component List for Figure 3 DESIGNATION QTY DESCRIPTION 0.01µF, 10V X7R ceramic C1, C15 2 capacitors C2, C3, C16, C17 4 10µF, 16V X5R ceramic capacitors 1000µF/16V aluminum electrolytic C4 ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response 5V C5 1μF C6 4.7μF R5 0.6V 10Ω EXT REF C12 VCC 1μF R7 10kΩ C14 R8 0.01μF 10kΩ N5 2N7002 Q1 VCC R9 CMST3904 47kΩ R10 POWER-GOOD 10kΩ TO SYSTEM R12 ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response Table 4. Component List for Figure 4 DESIGNATION QTY DESCRIPTION 0.01µF, 10V X7R ceramic C1, C14, C15 2 capacitors C2, C16 2 1µF, 6.3V X5R ceramic capacitors 10µF, 6.3V X5R ceramic C3, ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response FB1 INPUT 7.2V TO 20V IN C5 1μ 1μF REFIN2 VL C12 4.7μF GND VCC R7 POWER-GOOD 10kΩ TO SYSTEM PWRGD R8 75kΩ OSC/EN12 N5 ENABLE 2N7002 FB2 Figure ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response Table 5. Component List for Figure 5 DESIGNATION QTY DESCRIPTION 0.01µF, 10V X7R ceramic C1, C13 2 capacitors C2, C3, C14, C15 4 10µF, 25V X5R ceramic capacitors C5 1 1µF, 25V ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response Figure 6b. Ratiometric Tracking Startup and Shutdown Waveforms Figure 6c. Sequencing Startup and Shutdown Waveforms ______________________________________________________________________________________ V OUT1 CHIP ENABLE V OUT1 V OUT2 ON OFF PWRGD CHIP ENABLE V CC EXTERNAL ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response Figure 6d. Sequencing Startup and Shutdown Waveforms with System Enable 2 Signal Design Procedure Setting the Switching Frequency Connect a resistor from OSC/EN12 to GND to set the switching frequency between 100kHz ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response RIPPLE RIPPLE(ESR) RIPPLE(C) The output voltage ripple as a consequence of the ESR, ESL, and output capacitance is: = × − RIPPLE ESR ( ) ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response To set the no-load output voltage (V value follows: ⎛ ⎞ ⎛ ⎜ ⎜ ⎟ ⎝ − ⎝ ⎠ OUT ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response The high-side MOSFET(s) operate as duty-cycle control switches and have the following major losses: the chan- nel conduction loss (P ), the overlapping switching HSCC loss (P ), and the drive loss ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response The input filter capacitors reduce peak currents drawn from the power source and reduce noise and voltage ripple on the input caused by the circuit’s switching. The input capacitors must meet the ...
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Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response Pin Configuration TOP VIEW DH1 1 20 ILIM1 LX1 2 19 FB1 BST1 3 18 PWRGD MAX8664 DL1 GND PGND DL2 7 ...
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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. 26 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products Package Information is a registered trademark of Maxim Integrated Products, Inc ...