KA76L05. Low Dropout Voltage Regulator. Description. Features. Internal Block Diagram.

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Kimberly Black
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1 Low Dropout Voltage Regulator Features Limited input voltage and high efficiency. Internal thermal over load protection. 6V load dump protection. Output current up to.1a. Description KA76L5 is a fixed 3-terminal low dropout voltage regulator designed to need very low quiescent current. Internally, implemented circuits include 6V load dump protection, -5V reverse transient short circuit and thermal over load protection. TO : Output 2: GND 3: Input Internal Block Diagram Input VI 3.6V MAX DROP PASS ELEMENT Output VO 1 OVER VOLTAGE PROTECTION CURRENT LIMIT START + _ THERMAL SHUTDOWN REFERENCE VOLTAGE GND 2 Rev Fairchild Semiconductor Corporation

2 Absolute Maximum Ratings Parameter Symbol Value Unit Input Voltage Vi 33 V Over Protection Voltage V(OP) 6 V Operating Temperature Range TOPR -4~+125 C Maximum Junction Temperature TJ 15 C Storage Temperature Range TSTG -65~+15 C Electrical Characteristics (VI =14V, IO =1mA, CO =1µF, TA = 25 o C) Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage (I) VO (I) VI = 14V, IO = 1mA V Output Voltage (II) VO (II) VI = 6 ~ 26V, IO = 1mA TJ = -4 ~ +125 o C V Line Regulation (I) VO (I) VI = 9 ~ 16V, IO = 1mA mv Line Regulation (II) VO (II) VI = 6 ~ 26V, IO = 1mA mv Load Regulation VO (III) VI = 14V, IO = 5 ~ 1mA mv Output Impedance ZO VI = 14V, IO = 1mA mω Quiescent Current (I) IQ (I) VI = 6 ~ 26V, IO 1mA ma Quiescent Current (II) IQ (II) VI = 14V, IO 1mA ma Output Noise Voltage VN VI = 14V, IO = 1mA, f = 1Hz ~ 1KHz µvrms Ripple Rejection RR VI = 14V, IO = 1mA, f = 12Hz db Dropout Voltage (I) VD (I) IO = 1mA, VD = VI - VO V Dropout Voltage (II) VD (II) IO = 1mA, VD = VI - VO V Max Operational Input Voltage VIN IO = 1mA V Max Line Transient VLT(MAX) VI = 14V, IO =1mA, Time =1ms V Reverse Polarity Input Voltage DC VI(DC) VI = 14V, IO = 1mA, VO -.3V V Reverse Polarity Input Voltage Transient VI(TR) VI = 14V, IO = 1mA, Time 1ms V Peak Output Current IPK VI = 14V ma 2

3 Typical Perfomance Characteristics 7 FIG.1 Output Voltage vs. Input Voltage 1 FIG.2 Quiescent vs. Input Voltage Output voltage Vo(V) Input voltage Vin (V) Quiescent current Iq(mA) RL= 5 Ω RL= 5 Ω Input voltage Vin (V) Figure 1. Output Voltage vs. Input Voltage Figure 2. Quiescent Current vs. Input Voltage Ripple Rejection Ratio( db ) FIG.3 Ripple Rejection vs. Output Voltage VIN = 14V VOUT = 5.V f = 12 Hz TJ = 25 Dropout voltage Vdrop( mv ) FIG.4 Drop Voltage vs. Output Current VIN = 14V VOUT = 1 mv TJ = Output Current ( ma ) Output Current ( ma ) 12 Figure 3. Ripple Rejection vs. Output Voltage Figure 4. Drop Voltage vs. Output Current 5.6 FIG.5 Output Voltage vs. Temperature(Tj) 1 FIG.6 Quiescent Current vs. Temperature(Tj) Outout voltage Vo(V) Quiescent current Iq(mA) Temperature Tj( ) Junction temperature Tj( ) Figure 5. Output Voltage vs. Temperature(Tj) Figure 6. Quiescent Current vs. Temperature(Tj) 3

4 Typical Application VI 3 1 KA76L5 VO C I.1µF I Q 2 Co 1 µ F Figure 1. Application Circuit Ci is required if regulator is located an appreciable distance from power supply filter. Co improves stability. 4

5 Mechanical Dimensions Package Dimensions in millimeters TO MAX.46 ± TYP [1.27 ±.2] 1.2 ± TYP [1.27 ±.2] 3.6 ±.2 (R2.29) (.25) ± ±

6 Ordering Information Product Number Package Operating Temperature KA76L5Z TO-92-4 C to C 6

7 7

8 DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 6/1/1.m 1 Stock#DSxxxxxxxx 21 Fairchild Semiconductor Corporation

KA378R33. Low Dropout Voltage Regulator. Features. Description. Internal Block Diagram.

KA378R33. Low Dropout Voltage Regulator. Features. Description. Internal Block Diagram. www.fairchildsemi.com KA378R33 Low Dropout Voltage Regulator Features 3A / 3.3V Output low dropout voltage regulator TO22 Full-Mold package (4PIN) Overcurrent protection, Thermal shutdown Overvoltage protection,