MAX764 Maxim Integrated Products, MAX764 Datasheet
MAX764
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MAX764 Summary of contents
Page 1
... PWM device). The input voltage range 16V. The output volt- age is preset at -5V (MAX764), -12V (MAX765), or -15V (MAX766); it can also be adjusted from -1V to -16V using two external resistors (Dual Mode ...
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... CONDITIONS MAX76_C/E MAX76_M V+ = 16V, SHDN < 0. 16V, SHDN > 1. 10V, SHDN > 1.6V 3V ≤ V+ ≤ 16V MAX76_C MAX76_E MAX76_M MAX764, -4.8V ≤ V ≤ 5.2V OUT MAX765C/E, -11.52V ≤ V ≤ 12.48V OUT MAX765M, -11.52V ≤ V ≤ 12.48V OUT MAX766, -14.40V ≤ V ≤ -15.60V ...
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... Note 1: See Maximum Output Current vs. Supply Voltage graph in the Typical Operating Characteristics . Guarantees are based on correlation to switch on-time, switch off-time, on-resistance, and peak current rating. Note 2: Circuit of Figure 2. __________________________________________Typical Operating Characteristics ( -5V +25°C, unless otherwise noted.) OUT A MAX764 EFFICIENCY vs. LOAD CURRENT 100 10V ...
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Adjustable, High-Efficiency, Low I ____________________________Typical Operating Characteristics (continued) ( -5V +25°C, unless otherwise noted.) OUT A MAXIMUM OUTPUT CURRENT vs. SUPPLY VOLTAGE 600 CIRCUIT OF FIGURE 2 500 V = -5V OUT ...
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High-Efficiency, Low I ____________________________Typical Operating Characteristics (continued) ( -5V +25°C, unless otherwise noted.) OUT A LX ON-RESISTANCE vs. TEMPERATURE 2.2 2 (V+) = 10V OUT 1.8 1 ...
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Adjustable, High-Efficiency, Low I ____________________________Typical Operating Characteristics (continued) ( -5V +25°C, unless otherwise noted.) OUT A TIME TO ENTER/EXIT SHUTDOWN 0V 0V 2ms/div CIRCUIT OF FIGURE 5V ...
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High-Efficiency, Low I ____________________________Typical Operating Characteristics (continued) ( -5V +25°C, unless otherwise noted.) OUT A DISCONTINUOUS CONDUCTION AT HALF CURRENT LIMIT s/div CIRCUIT OF FIGURE 5V ...
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... The internal P-channel power MOSFET allows peak currents of 0.75A, increasing the output current capability over previous pulse-frequency-modulation (PFM) devices. Figure 1 shows the MAX764/MAX765/ MAX766 block diagram. The MAX764/MAX765/MAX766 offer three main improvements over prior solutions: ...
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... F 2) turns on again if the output is out of regulation. 20V The MAX764/MAX765/MAX766 limit the peak inductor current, which allows them to run in continuous-con- duction mode and maintain high efficiency with heavy INPUT loads. (See the photo Continuous Conduction at Full VOLTAGE (V) Current Limit in the Typical Operating Characteristics ...
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... Adjustable, High-Efficiency, Low I Modes of Operation When delivering high output currents, the MAX764/ MAX765/MAX766 operate in continuous-conduction mode. In this mode, current always flows in the induc- tor, and the control circuit adjusts the duty-cycle of the switch on a cycle-by-cycle basis to maintain regulation without exceeding the switch-current capability ...
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High-Efficiency, Low I Reference Capacitor Bypass REF with a 0.1µF capacitor (C3). The REF out- put can source up to 100µA for external loads. Layout Considerations Proper PC board layout is essential to reduce noise generated by high current levels ...
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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 © 1994 Maxim Integrated Products ...