MAX1674EUA Maxim Integrated Products, MAX1674EUA Datasheet
MAX1674EUA
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MAX1674EUA Summary of contents
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... LBI/LBO Low-Battery Detector , where OUT o Selectable Current Limit for Reduced Ripple o Low-Noise, Anti-Ringing Feature (MAX1676) o 8-Pin and 10-Pin µMAX Packages o Preassembled Evaluation Kit (MAX1676EVKIT) _______________Ordering Information PART MAX1674EUA MAX1675EUA MAX1676EUB TOP VIEW OUTPUT 3.3V, 5V, OR ADJ (2V TO 5.5V 300mA LOW-BATTERY DETECT OUT TEMP ...
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High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters ABSOLUTE MAXIMUM RATINGS Supply Voltage (OUT to GND) ..............................-0.3V to +6.0V Switch Voltage (LX to GND) .....................-0. Battery Voltage (BATT to GND).............................-0.3V to +6.0V SHDN, LBO to GND ..............................................-0.3V to +6.0V LBI, ...
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High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters ELECTRICAL CHARACTERISTICS (continued 2V OUT (V = 3.3V), R BATT OUT PARAMETER SYMBOL Operating Current into OUT (Note 3) Shutdown Current into OUT Efficiency LX Switch On-Time ...
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High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters ELECTRICAL CHARACTERISTICS (continued) = ∞ 2V OUT -40°C to +85°C, unless otherwise noted.) (Note 4) BATT L A PARAMETER SYMBOL CLSEL Input Current I CLSEL SHDN Input ...
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High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters 22µ 47µ 47µF IN OUT NO-LOAD BATTERY CURRENT vs. INPUT BATTERY VOLTAGE 160 140 120 I = 1A, 5.0V LIMIT 100 0.5A, 5.0V LIMIT ...
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... PIN MAX1674 MAX1676 MAX1675 — — Dual-Mode is a trademark of Maxim Integrated Products. 6 _______________________________________________________________________________________ Typical Operating Characteristics (continued) = 0.1µ +25°C, unless otherwise noted.) REF A LOAD-TRANSIENT RESPONSE MAX1674 TOC16 3.3V OUT I OUT 200mA/div V OUT 50mV/div AC COUPLED 5µs/div NAME Dual-Mode™ Feedback Input. Connect to GND for +5.0V output. ...
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High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters Detailed Description The MAX1674/MAX1675/MAX1676 compact, step-up DC-DC converters start up with voltages as low as 0.9V and operate with an input voltage down to 0.7V. Consuming only 16µA of quiescent current, these devices offer ...
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High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters As a result, the synchronous rectifier significantly improves efficiency without the addition of an external component. Conversion efficiency can be as high as 94%, as shown in the Typical Operating Characteristics. For low-voltage inputs ...
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High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters Selecting the Output Voltage V can be set to 3.3V or 5.0V by connecting the FB OUT pin to GND (5V) or OUT (3.3V) (Figures 5 and 6). To adjust the output voltage, connect ...
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High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters 47µF R1 200Ω BATT LX (MAX1676) OUT R3 CLSEL (MAX1676) LBI FB SHDN R2 MAX1674 100k MAX1675 MAX1676 REF LBO GND 0.1µF Figure 8. Setting Resistor Values for the Low-Battery Indicator when V < ...
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High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters Table 1. Suggested Components PRODUCTION METHOD Sumida CD43 series Sumida CD54 series Coilcraft DT1608C Surface Mount Coilcraft DO1608C Coiltronics Uni-PAC Murata LQH4 series Miniature Through-Hole Sumida RCH654-220 Table 2. Surface-Mount Inductor Specifications MANUFACTURER Ω ...
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High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters Optional External Rectifier Although not required, a Schottky diode (such as the MBR0520) connected between LX and OUT allows lower start-up voltages (Figure 10) and is recommend- ed when operating at input voltages below ...