MAX1927REUB Maxim Integrated Products, MAX1927REUB Datasheet
MAX1927REUB
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MAX1927REUB Summary of contents
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... Output Voltages from 0.75V 2.6V to 5.5V Input Voltage Range o Power-OK Output o No Schottky Diode Required o Selectable Forced PWM Operation o 1MHz Fixed-Frequency PWM Operation o 140µA Quiescent Current o Soft-Start o 10-Pin µMAX Package PART MAX1927REUB MAX1928EUB15 Applications MAX1928EUB18 MAX1928EUB25 2. POK 9 BATT ...
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Low-Output-Voltage, 800mA, PWM Step-Down DC-DC Converters ABSOLUTE MAXIMUM RATINGS BATT, PWM, POK, COMP, SHDN to GND ...............-0.3V to +6V PGND to GND .......................................................-0.3V to +0.3V LX, REF GND ................................-0. Continuous Power Dissipation (T = +70°C) A ...
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Low-Output-Voltage, 800mA, PWM Step-Down ELECTRICAL CHARACTERISTICS (continued) = 3.6V, SHDN = BATT 0.1µF, T BATT REF PARAMETER N-Channel Synchronous Rectifier Turn-Off Threshold LX Leakage Current Maximum Duty Cycle Minimum Duty Cycle Internal Oscillator Frequency Thermal Shutdown Threshold ...
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Low-Output-Voltage, 800mA, PWM Step-Down DC-DC Converters ELECTRICAL CHARACTERISTICS (continued) = 3.6V, SHDN = BATT 0.1µF, T BATT REF PARAMETER FB Input Current Reference Voltage Accuracy Reference-Supply Rejection PWM CONTROLLER P-Channel On-Resistance N-Channel On-Resistance P-Channel Current-Limit Threshold P-Channel ...
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Low-Output-Voltage, 800mA, PWM Step-Down (Circuits of Figure 3 and +25°C, unless otherwise noted.) A MAX1927R EFFICIENCY vs. LOAD CURRENT 100 3.3V OUT ...
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Low-Output-Voltage, 800mA, PWM Step-Down DC-DC Converters (Circuits of Figure 3 and +25°C, unless otherwise noted.) A MAXIMUM LOAD CURRENT vs. INPUT VOLTAGE 1 OUT 1.2 1 2.5V OUT ...
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Low-Output-Voltage, 800mA, PWM Step-Down PIN NAME Forced-PWM Input. Drive to GND to use PWM at medium to heavy loads and pulse-skipping at light loads. 1 PWM Drive to BATT to force PWM operation at all loads. 2 GND Ground 3 ...
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Low-Output-Voltage, 800mA, PWM Step-Down DC-DC Converters Detailed Description The MAX1927/MAX1928 PWM step-down DC-DC con- verters accept inputs as low as 2.6V, while delivering 800mA to output voltages as low as 0.75V. These devices operate in one of two modes to ...
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Low-Output-Voltage, 800mA, PWM Step-Down LX MAX1927R FB Figure 2. Setting the Adjustable Output Voltage Applications Information Output Voltage Selection The MAX1927/MAX1928 have preset output voltages. In addition, the MAX1927R has an adjustable output. To set the output voltage at the ...
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Low-Output-Voltage, 800mA, PWM Step-Down DC-DC Converters For the MAX1928 OUT OUT MAX ( ) CS Resistors R1 and R2 are external to the MAX1927 (see the Setting the Output Voltage section). I maximum ...
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Low-Output-Voltage, 800mA, PWM Step-Down Solving for C gives ESR OUT 22pF, whichever is greater. Standard Application Circuits Figures 3 and 4 are standard applications circuits for the MAX1927/MAX1928. Figure 3 illustrates the ...
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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 © 2002 Maxim Integrated Products 4X S ...