L1138

UNISONIC TECHNOLOGIES CO., LTD L1138 Preliminary CMOS IC HIGH RIPPLE-REJECTION AND LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR DESCRIPTION The UTC L1138 is a positive LDO (voltage regulator) by applying CMOS technology. It is featured as: low dropout voltage, high output voltage accuracy, and low current consumption. The internal circuits include low on-resistance transistor featured as a low dropout voltage and large output current, overcurrent protector to make sure the load current don’t exceed the current capacitance of the output transistor, thermal shutdown circuit to make sure the heat won’t damage the chip and ON/OFF circuit to keep the battery life longer. In applications, the UTC L1138 can be used equipment, such as power supplies for DVD, CD-ROM drives, battery-powered devices, personal communication devices, and personal communication devices. 1 SOP-8 SOT-89-5 FEATURES * Output voltage‘s high accuracy: ±1.0% * Low dropout voltage: 120mV typ. @3.0V output , IOUT=300mA * Low current consumption: 80μA(Typ.)160μA max in operation 0.1μA(Typ.)1.0μA max in shutdown mode * High current capability: 800mA output @VIN≥VOUT(S)+1.0V * With ON/OFF circuit: Ensures long battery life. * Low ESR capacitor can be used: at least a 4.7μF ceramic capacitor for the output capacitor. * High ripple rejection 70dB typ@1.0kHz * With over current protector * With thermal shutdown circuit * Halogen Free ORDERING INFORMATION Ordering Number Package L1138G-xx-AB5-R SOT-89-5 L1138G-xx-S08-R SOP-8 xx: Output Voltage, refer to Marking Information. Packing Tape Reel Tape Reel www.unisonic.com.tw Copyright © 2009 Unisonic Technologies Co., Ltd 1 of 8 QW-R502-323.c L1138 MARKING INFORMATION PACKAGE VOLTAGE CODE Preliminary CMOS IC MARKING SOT-89-5 28 :2.8V 35 :3.5V UTC L1138G Voltage Code Date Code Lot Code SOP-8 PIN CONFIGURATION PIN DESCRIPTION FOR SOT-89-5 Package PIN NO. PIN NAME DESCRIPTION 1 ON/OFF Shutdown Pin 2 GND Ground Pin 3(Note) NC No Connection 4 VIN Input voltage Pin 5 VOUT Output voltage Pin Note: The NC pin is electrically open; it’s can be connected VIN and VSS FOR SOP-8 Package PIN NO. PIN NAME DESCRIPTION 1 (Note 1) VOUT Output voltage Pin 2 (Note 1) VOUT Output voltage Pin 3 (Note 1) VOUT Output voltage Pin 4 GND Ground Pin 5 ON/OFF Shutdown Pin 6 (Note 2) 7 (Note 2) VIN VIN Input voltage Pin Input voltage Pin Input voltage Pin 8 (Note 2) VIN Notes: 1.Short pin 1, 2 ,3 2.Short pin 6, 7, 8 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 8 QW-R502-323.c L1138 BLOCK DIAGRAM VIN Preliminary CMOS IC Overcurrent Protector Thermal Shutdown Reference Voltage Circuit ON/OFF Circuit + Parasitic diode VOUT ON/OFF VSS UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 8 QW-R502-323.c L1138 PARAMETER Preliminary CMOS IC ABSOLUTE MAXIMUM RATING(Ta = 25°C, unless otherwise specified) SYMBOL RATINGS VIN VSS -0.3~VSS+7 Input Voltage VSS -0.3~VIN+0.3 VON/OFF Output Voltage VOUT VSS -0.3~VIN+0.3 Power Dissipation PD Internally limited Operating Temperature TOPR -40~+85 Storage Temperature TSTG -40~+125 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. UNIT V V V mW °C °C ELECTRICAL CHARACTERISTICS (VIN=VOUT+1V, Ta = 25°C, unless otherwise specified) L1138-2.8V Parameter Input Voltage Output Voltage (Note 1) Line Regulation Load Regulation Output Current (Note 2) Current Consumption During Short-Circuit Current Dropout Voltage Temperature Coefficient of Output Voltage Power Supply Rejection Shutdown Pin Input Voltage Shutdown Pin Input Current Thermal Shutdown Temperature High Low High Low Detection Release Operation Shutdown SYMBOL TEST CONDITIONS VIN VOUT(E) VIN =VOUT(S)+1.0V, IOUT =100mA ΔVOUT1 VOUT(S) + 0.5V ≤VIN ≤6.5V, ΔVIN × VOUT IOUT = 100mA ΔVOUT2 IOUT ISS1 ISS2 ISHORT VD TCVO PSRR VSH VSL ISH ISL TSD TSR VIN = VOUT(S) + 1.0 V, 1.0mA ≤IOUT ≤300mA VIN ≤VOUT(S)+1.0 V VIN = VOUT(S) +1.0 V, ON/OFF pin = ON, no load VIN = VOUT(S) + 1.0 V, ON/OFF pin = OFF, no load VIN = VOUT(S) + 1.0 V, ON/OFF pin = ON, VOUT = 0 V VOUT(S)=2.8V, IOUT = 300mA VIN = VOUT(S) +1.0V, IOUT = 10mA, -40°C≤ Ta ≤85°C VOUT(S)=2.8V, VIN= VOUT(S)+1.0 V f = 1.0kHz, IOUT = 100mA ΔVrip = 0.5Vrms VIN = VOUT(S) +1.0V VIN = VOUT(S) + 1.0V VIN = 6.5V, VON/OFF = 6.5V VIN = 6.5V, VON/OFF = 0V Junction temperature Junction temperature MIN 2.772 TYP 2.8 0.05 30 800 80 0.1 350 0.15 ±150 70 1.5 -0.1 -0.1 150 120 0.3 0.1 0.1 0.22 160 1.0 MAX 6.5 2.828 0.3 100 UNIT V V %/V mV mA µA µA mA V ppm/°C dB V V µA µA °C °C UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 8 QW-R502-323.c L1138 L1138-3.5V Parameter Input Voltage Output Voltage (Note 1) Line Regulation Load Regulation Output Current (Note 2) Current Consumption During Short-Circuit Current Dropout Voltage Temperature Coefficient of Output Voltage Power Supply Rejection Operation Shutdown Preliminary CMOS IC ELECTRICAL CHARACTERISTICS(Cont.) SYMBOL TEST CONDITIONS VIN VOUT(E) VIN =VOUT(S)+1.0V, IOUT =100mA ΔVOUT1 VOUT(S) + 0.5V ≤VIN ≤6.5V, ΔVIN × VOUT IOUT = 100mA ΔVOUT2 IOUT ISS1 ISS2 ISHORT VD TCVO PSRR VIN = VOUT(S) + 1.0 V 1.0mA ≤IOUT ≤300mA VIN ≤VOUT(S)+1.0 V VIN = VOUT(S) +1.0 V ON/OFF pin = ON, no load VIN = VOUT(S) + 1.0 V ON/OFF pin = OFF, no load VIN = VOUT(S) + 1.0 V ON/OFF pin = ON, VOUT = 0 V VOUT(S)=3.5V, IOUT = 300mA VIN = VOUT(S) +1.0V IOUT = 10mA, -40°C≤ Ta ≤85°C VOUT(S)=3.5V, VIN= VOUT(S)+1.0 V f = 1.0kHz, IOUT = 100mA ΔVrip = 0.5Vrms VIN = VOUT(S) +1.0V VIN = VOUT(S) + 1.0V VIN = 6.5V, VON/OFF = 6.5V VIN = 6.5V, VON/OFF = 0V Junction temperature Junction temperature MIN 3.465 TYP 3.5 0.05 30 800 80 0.1 350 0.12 ±150 65 1.5 -0.1 -0.1 150 120 0.3 0.1 0.1 0.18 160 1.0 MAX 6.5 3.535 0.3 100 UNIT V V %/V mV mA µA µA mA V ppm/°C dB V V µA µA °C °C Shutdown Pin Input High VSH Voltage Low VSL Shutdown Pin Input High ISH Current Low ISL Detection TSD Thermal Shutdown Temperature Release TSR Notes: 1. VOUT(S): Specified output voltage. VOUT (E): Actual output voltage at the fixed load When fixing IOUT(= 100mA) and inputting VOUT(S) + 1.0 V 2. This output current means the one at which the output voltage becomes increasing the output current. 95% of VOUT(E) after gradually UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 8 QW-R502-323.c L1138 OPERATION 1. Preliminary CMOS IC Basic operation The reference voltage (VREF) and VFB(the output voltage resistance-divided by feedback resistors RS and RF) are the input for the error amplifier. VIN VOUT Current Supply VREF Error Amplifier + Reference Voltage Circuit VFB RF RS VSS 2. Output transistor A low on-resistance P-channel MOS FET is used as the output transistor. Inverse current flowing from VOUT pin through a parasitic diode to VIN pin can damage the regulator, so be sure that VOUT does not exceed VIN + 0.3 V. Shutdown pin (ON/OFF pin) The shutdown pin can start and stop the regulator.The shutdown mode set by this pin can stop the operation of all internal circuits. The structure of the ON/OFF pin is shown in Fig. 1. When the ON/OFF pin is not used, connect it to the VSS pin if the logic type is “A” and to the VIN pin if it is “B”. Logic Type A A B B ON/OFF Pin “L”: Power on “H”: Power off “L”: Power off “H”: Power on Internal Circuits Operating Stopped Stopped Operating VOUT Pin Voltage Set value VSS level VSS level Set value Current Consumption ISS1 ISS2 ISS2 ISS1 3. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 8 QW-R502-323.c L1138 TEST CIRCUITS 1. Preliminary CMOS IC 2. 3. 4. 5. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 8 QW-R502-323.c L1138 TYPICAL APPLICATION CIRCUIT Preliminary CMOS IC Notes: CIN is a capacitor for stabilizing the input. A ceramic capacitor of 4.7μF or more can be used for COUT UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 8 of 8 QW-R502-323.c