MAX8576EUB Maxim Integrated Products, MAX8576EUB Datasheet
MAX8576EUB
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MAX8576EUB Summary of contents
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... Adjustable Temperature-Compensated Hiccup Current Limit ♦ Lossless Peak Current Sensing ♦ Monotonic Startup into Prebias Output (MAX8576/MAX8578) ♦ Startup Overvoltage Protection (MAX8577/MAX8579) ♦ Enable/Shutdown ♦ Adjustable Soft-Start Applications PART MAX8576EUB MAX8577EUB MAX8578EUB MAX8579EUB OCSET IN MAX8576 DH MAX8577 LX BST Pin Configurations appear at end of data sheet. ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers ABSOLUTE MAXIMUM RATINGS IN to GND (MAX8576/MAX8577) ...........................-0.3V to +30V VL to GND (MAX8576/MAX8577).............................-0. (MAX8576/MAX8577) ...............................-0.3V to +30V V to GND (MAX8578/MAX8579) ..........................-0.3V to +6V CC ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers ELECTRICAL CHARACTERISTICS (continued 12V (MAX8576/MAX8577 only), 4.7µF capacitor from VL (MAX8576/MAX8577 only (MAX8578/MAX8579 only); 0.01µF capacitor from SS to GND; V ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers ELECTRICAL CHARACTERISTICS (continued 12V (MAX8576/MAX8577 only), 4.7µF capacitor from VL (MAX8576/MAX8577 only (MAX8578/MAX8579 only); 0.01µF capacitor from SS to GND; V ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers (T = +25 C, unless otherwise noted.) A EFFICIENCY vs. LOAD CURRENT (CIRCUIT OF FIGURE 2) 100 V = 2.5V OUT V = 3.3V OUT 1.8V V ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers ( T = +25 C, unless otherwise noted.) A POWER-UP V (CIRCUIT OF FIGURE OUT I LX 400 s/div POWER-DOWN V (CIRCUIT OF FIGURE 3) ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers ( T = +25 C, unless otherwise noted.) A STARTUP AND SHUTDOWN (CIRCUIT OF FIGURE 2) V GS(Q3 OUT I LX NONMONOTONIC OUTPUT-VOLTAGE RISE (CIRCUIT OF FIGURE 2, ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers PIN NAME MAX8576/ MAX8578/ MAX8577 MAX8579 Feedback Input. Regulates voltage. See the Setting the Output Voltage section. S oft- S tar exter ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers OCSET MAX8578/ GND MAX8579 EN 0.3 FB 0.75V SS SS RAMP 0.05V IN MAX8576 MAX8577 MAX8578 MAX8579 Figure 1. Functional Diagram _______________________________________________________________________________________ FAULT LX DHI DRIVERS OVP LOGIC ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers INPUT 9V TO 24V R1 C4 OFF 12V INPUT, 1.8V/12A OUTPUT (f CIRCUIT IS TARGETED FOR 10.8V TO 13.2V INPUT. HOWEVER, INPUT RANGE ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers MAX8576/MAX8577 External Component List DESCRIPTION/VENDOR PART COMPONENTS QTY 470µF, 35V aluminum electrolytic C1 capacitors Sanyo 35MV470WX C3 1 10µF, 25V X7R ceramic capacitor C4 1 0.01µF, 10V X7R ceramic ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers Nominal switching frequency is programmable over the 200kHz to 500kHz range. High-side MOSFET sensing is used for adjustable hiccup current-limit and short-cir- cuit protection. The MAX8576/MAX8578 can start up into a ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers to SS. See Figure 2 for details. The maximum on-resis- tance of the small external n-channel MOSFET should be less than 40 so that the SS voltage is below 10mV. Synchronous-Rectifier ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers OUT where V = 0.590V the DC resistance of the FB DC output inductor ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers N1 operates as a duty-cycle control switch and has the following major losses: the channel-conduction loss (P ), the VL overlapping switching loss (P N1CC and the drive loss (P ). ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers chosen based on a prototype or evaluation circuit general rule, a smaller current ripple results in less out- put voltage ripple. Since the inductor ripple current is a factor ...
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Input, Low-Cost, Hysteretic Synchronous Step-Down Controllers 1) Place IC decoupling capacitors as close to IC pins as possible. Place the input ceramic decoupling capacitor directly across and as close as possible to the high-side MOSFET’s drain and ...
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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. 18 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products 4X S ...