L11815B_10

UNISONIC TECHNOLOGIES CO., LTD L11815B 1.5A CMOS LDO DESCRIPTION The UTC L11815B is a positive, linear regulator. One of its features is the very low quiescent current typically as low as 45μA and the dropout voltage is extremely low. The internal circuit includes thermal shutdown and current fold-back mechanism to prevent device failure when the circuit is operated in the bad conditions. In application, the UTC L11815B needs a low noise and regulated supply. For stability, the output capacitance value should be 4.7μF or more. The UTC L11815B is an ideal for battery applications, such as instrumentations, portable electronics, wireless devices, cordless phones, PC peripherals, and battery powered widgets. The output voltage values are set during manufacturing and their accuracy is trimmed to within 1.5%. Preliminary CMOS IC FEATURES * Quiescent Current (45μA typ.) * Accurate :±1.5% * Very Low Dropout Voltage * Guaranteed 1.5A Output * Over-Temperature Shutdown * With Current Limiting * Short Circuit Current Fold-Back * Power-Saving Shutdown Mode * Low Temperature Coefficient * Halogen Free ORDERING INFORMATION Ordering Number Package Packing L11815BG-xx-x-S08-R SOP-8 Tape Reel Note: xx: Output Voltage, x: Pin Code; refer to Marking Information. L11815BG-xx-x-S08-R (1) Packing Type (2) Package Type (3) Pin Code (4) Output Voltage Code (5) Halogen Free (1) R: Tape Reel (2) S08: SOP-8 (3) x: Pin Code (4) xx: Refer to Marking Information (5) G: Halogen Free www.unisonic.com.tw Copyright © 2010 Unisonic Technologies Co., Ltd 1 of 6 QW-R502-352.c L11815B MARKING INFORMATION PACKAGE VOLTAGE CODE Preliminary CMOS IC MARKING SOP-8 AD: ADJ PIN CONFIGURATION PIN DESCRIPTION PIN NO 1 2 3 4 5~8 PIN NAME EN VIN C VOUT ADJ GND Pin Code DESCRIPTION Enable pin. When pulled low, the PMOS pass transistor turns off, current consuming less than 1μA. Input voltage pin. It should be decoupled with 1μF or greater capacitor. LDO voltage regulator output pin. It should be decoupled with a 4.7μF or greater value low ESR ceramic capacitor. Feedback output voltage for adjustable device. Ground connection pin. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R502-352.c L11815B BLOCK DIAGRAM VIN Preliminary CMOS IC OCP VOUT OTP EN EA ADJ VREF=1.2V GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R502-352.c L11815B ABSOLUTE MAXIMUM RATING PARAMETER Input Voltage Input Voltage (EN) Output Voltage Preliminary CMOS IC RATINGS UNIT -0.3 ~ +8 V -0.3 ~ +8 V -0.3 ~ VIN + 0.3 V PD Output Current IOUT mA VIN - VOUT Power Dissipation PD 810 mW Junction Temperature TJ 150 °C Operating Temperature TOPR -40~+85 °C Storage Temperature TSTG -65~+150 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. SYMBOL VIN VEN VOUT THERMAL DATA PARAMETER SYMBOL Junction to Ambient θJA Junction to Case (Note) θJC Note: θJC on center of molding compound if IC has on tab RATINGS 150 60 UNIT °C/W °C/W ELECTRICAL CHARACTERISTICS (VIN =VOUT+2V, VEN =VIN , Ta =25°C, unless otherwise specified) PARAMETER Input Voltage Output Voltage Accuracy ADJ Reference Voltage Line Regulation Load Regulation Output Current Current Limit Short Circuit Current Minimum Load Current Ground Pin Current ADJ Input Bias Current Dropout Voltage Over Temperature Shutdown Over Temperature Hysteresis Temperature Coefficient of Output Voltage Power Supply Rejection Output Voltage Noise EN Input Threshold EN Input Bias Current Shutdown Supply Current Note: VIN(MIN)=VOUT+VDROPOUT SYMBOL VIN VOUT VREF ΔVOUT VOUT ΔVOUT VOUT TEST CONDITIONS VEN = VEH(MIN), IOUT=1mA VOUTVOUT≥2.0V VIN=VOUT+1~VOUT+2 4.0V≤VOUT IOUT=1mA ~ 1.5A VOUT>1.2V VOUT>1.2V VOUT