MAX1842EEE Maxim Integrated Products, MAX1842EEE Datasheet
MAX1842EEE
Specifications of MAX1842EEE
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MAX1842EEE Summary of contents
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... Idle-Mode Operation at Light Loads ♦ Thermal Shutdown ♦ Adjustable Soft-Start Inrush Current Limiting ♦ 100% Duty Cycle During Low-Dropout Operation ♦ Output Short-Circuit Protection ♦ 16-Pin QSOP Package PART MAX1742EEE MAX1742EEE+ MAX1842EEE MAX1842EEE+ + Denotes lead-free package. Applications INPUT 3V TO 5.5V 2.2μF Features = 4.5V IN ...
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Step-Down Regulators with Synchronous Rectification and Internal Switches ABSOLUTE MAXIMUM RATINGS GND ........................................................-0. .............................................................................±0.3V CC GND to PGND.....................................................................±0.3V All Other Pins to GND.................................-0. Current (Note ...
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Step-Down Regulators with Synchronous Rectification and Internal Switches ELECTRICAL CHARACTERISTICS (continued 3.3V, FBSEL = GND 0°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL Current-Limit ...
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Step-Down Regulators with Synchronous Rectification and Internal Switches ELECTRICAL CHARACTERISTICS ( 3.3V, FBSEL = GND -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL Input Voltage ...
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Step-Down Regulators with Synchronous Rectification and Internal Switches (Circuit of Figure +25°C, unless otherwise noted.) A MAX1742 EFFICIENCY vs. OUTPUT CURRENT (V = 5.0V 6.0μH) IN 100 V = 2.5V 47kΩ, ...
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Step-Down Regulators with Synchronous Rectification and Internal Switches (Circuit of Figure +25°C, unless otherwise noted.) A MAX1742 STARTUP AND SHUTDOWN 1ms/div MAX1742 LINE-TRANSIENT RESPONSE 20μs/div 1.5V 100kΩ, L ...
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Step-Down Regulators with Synchronous Rectification and Internal Switches (Circuit of Figure +25°C, unless otherwise noted.) A MAX1842 EFFICIENCY vs. OUTPUT CURRENT (V = 5.0V 2.5μH) IN 100 V = 2.5V 47kΩ, ...
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Step-Down Regulators with Synchronous Rectification and Internal Switches (Circuit of Figure +25°C, unless otherwise noted.) A MAX1842 LOAD-TRANSIENT RESPONSE 10μs/div PIN NAME Shutdown Control Input. Drive SHDN low to disable the reference, control circuitry, and ...
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Step-Down Regulators with Synchronous Rectification and Internal Switches _______________Detailed Description The MAX1742/MAX1842 synchronous, current-mode, constant-off-time, PWM DC-DC converters step down input voltages 5. preset output voltage of 2.5V, 1.8V, or 1.5V ...
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Step-Down Regulators with Synchronous Rectification and Internal Switches INPUT C = 10μF (MAX1742 33μF (MAX1842) IN 10Ω 2.2μF Figure 1. Typical Circuit COMP REF 470pF 10Ω 2.2μF SHDN REF 1μF NOTE: ...
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Step-Down Regulators with Synchronous Rectification and Internal Switches constant-off-time mode, the synchronous-rectifier switch turns off just prior to the PMOS power switch turning on. While both switches are off, inductor current flows through the internal body diode of ...
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Step-Down Regulators with Synchronous Rectification and Internal Switches Table 3. Output Voltage Programming PIN FBSEL FB V Output voltage CC Unconnected Output voltage REF Output voltage Resistive GND divider LX MAX1742 MAX1842 50kΩ ...
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Step-Down Regulators with Synchronous Rectification and Internal Switches The peak inductor current at full load is 1.125 x I the above equation is used; otherwise, the peak current is calculated by: V OUT = + I I PEAK ...
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Step-Down Regulators with Synchronous Rectification and Internal Switches The constant-current source stops charging once the voltage across the soft-start capacitor reaches 1.8V (Figure 5). Extended Current Limit (MAX1842) For applications requiring occasional short bursts of high output current ...
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Step-Down Regulators with Synchronous Rectification and Internal Switches 3) Place the LX node components as close together and as near to the device as possible. This reduces resistive and switching losses as well as noise ground ...
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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. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc ...