MAX761 Maxim Integrated Products, MAX761 Datasheet
MAX761
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MAX761 Summary of contents
Page 1
... Output voltages are preset to 12V (MAX761) and 15V (MAX762), or they can be set with two external resistors. With a 5V input, the MAX761 guarantees a 12V, 150mA output. Its high efficiency, low supply current, fast start-up time, SHDN controlling capability, and small size make the MAX761 ideal for powering flash memory ...
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... A CONDITIONS Figure 2, bootstrapped MAX76_C/E Figure with external resistors. MAX76_M Figure 2, bootstrapped Figure 2, bootstrapped V+ = 16.5V, normal operation, SHDN = 0V, non-bootstrapped Figure 2, MAX761 5V, SHDN = 0V, IN normal operation V+ = 10.0V, shutdown mode, SHDN = V+ 0mA ≤ I ≤ 75mA, LOAD Figure 2, 3V ≤ V+ ≤ 12V MAX761, 0mA ≤ I ≤ ...
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Adjustable, High-Efficiency, Low I ELECTRICAL CHARACTERISTICS (continued) ( 0mA 0.1µ LOAD REF A PARAMETER SYMBOL Reference Load Regulation Reference Line Regulation LX Leakage Current FB Leakage Current I FB ...
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... OUTPUT CURRENT (mA) REFERENCE OUTPUT RESISTANCE vs. TEMPERATURE 250 200 10µA 150 100 50µA 100µ -60 -40 - 100 120 140 TEMPERATURE ( C) MAX761 START-UP VOLTAGE vs. R LOAD 2 12V OUT 2.1 BOOTSTRAPPED INTERNAL RESISTORS 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 0 100 1000 LOAD QUIESCENT CURRENT vs ...
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Adjustable, High-Efficiency, Low I ____________________________Typical Operating Characteristics (continued) (Circuit of Figure +25°C, unless otherwise noted LEAKAGE vs. TEMPERATURE 1000 V+ = 15V 100 16. ...
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Adjustable, High-Efficiency, Low I , Step-Up DC-DC Converters Q _____________________________Typical Operating Characteristics (continued) (Circuit of Figure +25°C, unless otherwise noted.) A LOAD–TRANSIENT RESPONSE 5µs/div (0mA to 200mA) LOAD ...
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... The internal N-channel power MOSFET allows 1A peak currents, increasing the output current capability over previous pulse-frequency-modu- lation (PFM) devices. Figure 1 shows the MAX761/ MAX762 block diagram. The MAX761/MAX762 offer three main improvements over prior solutions: (1) the converters operate with tiny ...
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... After this minimum time, the switch either (1) stays off if the output is in regulation, or (2) turns on again if the output is out of regulation. The MAX761/MAX762 also limit the peak inductor cur- rent, allowing the devices to run in continuous-conduc- tion mode (CCM) and maintain high efficiency with heavy loads (Figure 4a) ...
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... TRIP __________________Design Procedure Setting the Output Voltage The MAX761/MAX762’s output voltage can be adjusted from 5V to 16.5V using external resistors R1 and R2 configured as shown in Figures 3 and 5. For adjustable- output operation, select feedback resistor R1 in the 10kΩ to 250kΩ range. Higher R1 values within this range give lowest supply current and best light-load efficiency ...
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... The input bypass capacitor, C1, reduces peak currents drawn from the voltage source, and also reduces noise at the voltage source caused by the MAX761/MAX762’s switching action. The input voltage source impedance determines the size of the capacitor required at the V+ input ...
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Adjustable, High-Efficiency, Low I Reference Capacitor Bypass REF with a 0.1µF capacitor. REF can source up to 100µA. Setting the Low-Battery Detector Voltage To set the low-battery detector’s falling trip voltage (V ), select R3 between 10kΩ 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. 12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1993 Maxim Integrated Products LX 0.142" ...