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LM2931A

Fairchild Semiconductor
Part Number LM2931A
Manufacturer Fairchild Semiconductor
Description Low Dropout Voltage Regulator
Published Mar 22, 2005
Detailed Description www.fairchildsemi.com LM2931A Low Dropout Voltage Regulator Features • • • • Limited input voltage and high efficiency...
Datasheet PDF File LM2931A PDF File

LM2931A
LM2931A

Overview
www.
fairchildsemi.
com LM2931A Low Dropout Voltage Regulator Features • • • • Limited input voltage and high efficiency.
Internal thermal over load protection.
60V load dump protection.
Output current up to 0.
1A.
Description LM2931A is a fixed 3-terminal low dropout voltage regulator designed to need very low quiescent current.
Internally, implemented circuits include 60V load dump protection, -50V reverse transient short circuit and thermal over load protection.
TO-92 1 1: Output 2: GND 3: Input Internal Block Diagram 0.
6V MAX DROP Input VI 3 PASS ELEMENT Output VO 1 OVER VOLTAGE PROTECTION CURRENT LIMIT START _ THERMAL SHUTDOWN REFERENCE VOLTAGE GND 2 ©2001 Fairchild Semiconductor Corporation + Rev.
1.
0.
0 LM2931A Absolute Maximum Ratings Parameter Input Voltage Over Protection Voltage Operating Temperature Range Maximum Junction Temperature Storage Temperature Range Symbol Vi V(OP) TOPR TJ TSTG Value 33 60 -40~+125 150 -65~+150 Unit V V °C °C °C Electrical Characteristics (VI =14V, IO =10mA, CO =100µF, TA = 25 oC) Parameter Output Voltage (I) Output Voltage (II) Line Regulation (I) Line Regulation (II) Load Regulation Output Impedance Quiescent Current (I) Quiescent Current (II) Output Noise Voltage Ripple Rejection Dropout Voltage (I) Dropout Voltage (II) Max Operational Input Voltage Max Line Transient Reverse Polarity Input Voltage DC Reverse Polarity Input Voltage Transient Peak Output Current Symbol VO (I) VO (II) ∆VO (I) ∆VO (II) ZO IQ (I) IQ (II) VN RR VD (I) VD (II) VIN VLT(MAX) VI(DC) VI(TR) IPK Conditions VI = 14V, IO = 10mA VI = 6 ~ 26V, IO = 100mA TJ = -40 ~ +125 oC VI = 9 ~ 16V, IO = 10mA VI = 6 ~ 26V, IO = 10mA VI = 14V, IO = 100mA VI = 6 ~ 26V, IO ≤10mA VI = 14V, IO ≤ 100mA VI = 14V, IO = 10mA, f = 10Hz ~ 100KHz VI = 14V, IO = 10mA, f = 120Hz IO = 10mA, VD = VI - VO IO = 100mA, VD = VI - VO IO = 10mA VI = 14V, IO =10mA, Time =100ms VI = 14V, IO = 10mA, VO ≥ -0.
3V VI = 14V, IO = 10mA, Time ≤ 10ms VI = 14V Min.
4.
81 4.
75 55 26 60 - 15...


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