l4946b STMicroelectronics, l4946b Datasheet
l4946b
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l4946b Summary of contents
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... THERMAL SHUTDOWN AND LIMITATION (FOLDBACK) REVERSE BATTERY AND LOAD DUMP PROTECTION INHIBIT (ON/OFF) AND RESET FUNCTIONS DESCRIPTION The L4946B is a quad output low drop voltage regulator. The four outputs are a low drop 10V at 125mA ( 8.5V at 250mA ( 200mA (V ) and a low drop 5V st-by line at ...
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L4946 OPERATING CONDITION Symbol V Supply Voltage S I Load Current ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage S V Input Voltage (ON/OFF Output Voltage (LVW, Reset ...
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ELECTRICAL CHARACTERISTICS ( max - unless otherwise specified.) O amb Symbol Parameter V Output Voltage O1 V Load Regulation O1 I Quiescent Current ( Dropout ...
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L4946 ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter Ripple rejection V Line Regulation O2 V across V range O2 S Output Noise (design only) V Output Voltage O3 V Line Regulation O3 V Load Regulation O3 I Quiescent Current ( I ) ...
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ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter V Max Bat.Trans Rev. Voltage Trans Rev. Voltage . O4 Ripple rejection Output Noise (design only) ON/OFF Input Current V Input Threshold I ON/OFF V Reset Output Voltage Set R Reset ...
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L4946 FUNCTIONAL DESCRIPTION The L4946 includes a monitoring circuit to warn the microprocessor if a low voltage or no voltage condition is occurring. Between 7V and 8V on the STCAP pin, the LVW output will go low. This tells the ...
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The STCAP pin acts like a delay circuit. Due to the large capacitor (470 F), the STCAP pin allows the battery voltage to decay slowly giving the mi- croprocessor time to store data. Also, during short low voltage or negative ...
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L4946 mm inch DIM. MIN. TYP. MAX. MIN. TYP 2. 0.039 E 0.49 0.55 0.019 F 0.88 0.95 0.035 G 1.45 1.7 1.95 0.057 0.067 G1 16.75 17 17.25 0.659 0.669 H1 19.6 ...
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... STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics 2000 STMicroelectronics – ...