LC1486CB5TR

LC1486 600mA High PSRR, Fast Response Linear Regulator DESCRIPTION FEATURES LC1486 series is a group of positive voltage output, low power consumption, low dropout voltage regulator.    LC1486 can provide output value adjustable from 0.8V to 5.0V.       LC1486 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module with discharge capability. LC1486 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. It uses trimming technique to guarantee output voltage accuracy within ±2%. And it also provides foldback short-circuit protection, thermal protection and output current limit function. APPLICATIONS  Power source for cellular phones and various kind of PCSs  Battery Powered equipment  Power Management of MP3, PDA, DSC, Mouse, PS2 Games  Reference Voltage Source  Regulation after Switching Power LC1486 is available in SOT23-5 and SC70-5 packages which are lead free. TYPICAL APPLICATION VIN Cin EN PIN OUT & MARKING VOUT VOUT VIN LC1486 GND On/Off Low Power Consumption: 40uA (Typ.) Maximum output current: 600mA Low dropout Voltage: 170mV@Iout=300mA,Vout=3.3V 355mV@Iout=600mA,Vout=3.3V Build-in chip enable and discharge circuit Input voltage range: 2.5~6V Adjustable Output from 0.8V to 5.0V Output Voltage Accuracy: ±2% Ouput current limit: 1A (Typ.) OCP/SCP/TSD protection R1 VOUT FB 5 4 Cout VOUT FB 5 4 FB R2 TAYW 1 Note: 1) Input capacitor (Cin=1uF) and Output capacitor (Cout=1uF) are recommended in all application circuit. 2) VOUT=VFB*(1+ , VFB=0.8V VIN TAYW 2 GND 3 EN 1 2 3 VIN GND EN SOT23-5 SC70-5 TA: Product Code YW: Date code (Year & Week) www.leadchip.com.cn 1 Your final power solution LC1486 ORDERING INFORMATION PART No. PACKAGE Tape&Reel LC1486CB5TR LC1486CA5TR SOT23-5 SC70-5 3000/Reel 3000/Reel ABSOLUTE MAXIMUM RATING Parameter Value Max Input Voltage Operating Junction Temperature(Tj) Ambient Temperature(Ta) SOT23-5 Power Dissipation SC70-5 Storage Temperature(Ts) Lead Temperature & Time 8V 150C -40C –85C 400mW 400mW -40C -150C 260C,10S Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability. RECOMMENDED WORK CONDITIONS Parameter Value Input Voltage Range Ambient Temperature 2.5V to 6V -40C –85C ELECTRICAL CHARACTERISTICS (Test Conditions: CIN=1uF, COUT=1uF, TA=25C, unless otherwise specified. ) Symbol VIN VFB VDROP Parameter Input Voltage Regulated Feedback Voltage * Dropout Voltage Vout Vin  Vout Vout / Iout Conditions VIN =3.3V, IOUT=10mA VOUT=1.8V, IOUT =300mA VOUT =2.5V, IOUT =600mA VOUT =3.3V, IOUT =600mA Min 2.5 0.784 Typ Max Units 0.8 900 550 355 6 0.816 1350 825 500 V V mV mV mV Line Regulation IOUT =10mA, 2.5V≤VIN≤6V 0.05 0.2 %/V Load Regulation VIN =4.3V, VOUT =3.3V 0mA≤IOUT≤600mA 50 80 mV ISTANDBY Supply Current Supply Current (Srandby) VIN = VOUT +1V VIN = VOUT +1V, VEN=GND 40 0.1 100 1.0 uA uA Vout T  Vout Output Voltage Temperature Coefficiency IOUT =10mA ±100 ppm/C PSRR Ripple Rejection 60 dB ILIM ISHORT Current Limit Short Current Limit Discharge Resistor EN Input Voltage “H” EN Input Voltage “L” Thermal Shutdown Temp 1 200 280 A mA ohm V V °C IQ RDISCHARGE VENH VENL TSD www.leadchip.com.cn F=1KHz, Ripple=1Vp-p VIN = VOUT +1V VIN =4.3V, VOUT =3.3V VOUT =0V EN=0, VOUT =3V 1.3 0 Vin 0.35 160 2 Your final power solution LC1486 TSH Thermal Shutdown Hysteresis 30 °C Note: * VDROP=VIN1-(VOUT2*0.98) VOUT 2 is the output voltage when VIN = VOUT 1+1.0V and IOUT =600mA. VIN 1 is the input voltage at which the output voltage becomes 98% of Vout1 after gradually decreasing the input voltage. PIN DESCRIPTION PIN # NAME 1 VIN 2 GND 3 EN 4 FB 5 VOUT DESCRIPTION Supply Voltage Input. Supply voltage can range from 1.8V to 6V. Bypass with a 1μF capacitor to GND. Ground Pin Enable Pin. This pin has an internal pull-down resistor. A logic low reduces the supply current to less than 1μA. Connect to IN for normal operation. Feedback Pin (adjustable voltage version only). This is used to set the output voltage of the device. Output Voltage BLOCK DIAGRAM EXPLANATION LC1486 series is a group of positive voltage output, low noise, low power consumption, low dropout voltage regulator. LC1486 can provide output value adjustable from 0.8V to 5.0V. LC1486 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. LC1486 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. It uses trimming technique to guarantee output voltage accuracy within±2%. And it also provides fold-back short-circuit protection, thermal protection and output current limit function. www.leadchip.com.cn 3 Your final power solution LC1486 TYPICAL PERFORMANCE CHARACTERISTICS Load Regulation Load Regulation (Vout=1.8V) (Vout=3.3V) 2.0 3.6 3.5 Vout (V) Vout (V) 1.5 1.0 3.4 3.3 3.2 0.5 3.1 Vin=3.3V Vin=2.8V 0.0 0 200 400 600 Vin=5V Vin=4.3V 3.0 800 0 100 200 300 Iout (mA) 400 500 600 Iout (mA) Line Regulation Line Regulation (Vout=3.3V) (Vout=1.8V) 3.354 1.844 3.334 Vout (V) Vout (V) 1.824 1.804 3.314 3.294 3.274 1.784 3.254 Iout=10mA Iout=10mA 3.234 1.764 2.5 3.0 3.5 4.0 4.5 5.0 5.5 3.5 6.0 4.0 4.5 5.0 5.5 6.0 Vin (V) Vin (V) Dropout Voltage Dropout Voltage vs. Temp (Vout=3.3V) 600 450 500 400 350 Dropout (mV) Dropout (mV) 400 300 200 300 250 200 150 100 100 Vout=3.3V Vout=2.5V 0 0 100 200 300 400 500 0 0 600 100 200 300 400 500 600 Iout (mA) Iout (mA) www.leadchip.com.cn T=-40°C T=25°C T=85°C 50 4 Your final power solution LC1486 Iq Current Limit vs. VIN (Vout=1.8V) 1,200 60 1,100 1,000 40 Current Limit (mA) Iq (uA) 50 30 20 T=-40°C T=25°C T=85°C 10 0 1 2 3 4 5 900 800 Vout=1.2V Vout=1.8V Vout=2.5V Vout=3.3V 700 600 6 3.5 4.0 4.5 Vin (V) 5.0 5.5 6.0 Vin (V) EN Chip Enable Response Vout vs. Temperature (Orange: Vin; Blue: EN; Green: Vout) 3.5 3.0 Vin, V/div Vout (V) 2.5 EN, V/div Vout, V/div 2.0 1.5 1.0 0.5 0.0 -40 0 40 80 120 160 Temperature (C) Line Transient Response Load Transient Response Vout=3.3V, Iout=10mA Vin=4.3-5.3V, Vout p-p=78mV (Orange: Vin; Green: Vout) Vin=4.3V, Vout=3.3V, Iout=10-600mA Trise=1uS, Tfall=1uS , Vout p-p=74mV (Pink: Iout; Orange: Vout) Vin, V/div Iout, mA/div Vout, mV/div www.leadchip.com.cn Vout, mV/div 5 Your final power solution LC1486 PACKAGE OUTLINE Package SOT-23-5 Package Dimension: Package SC70-5 Devices per reel 3000Pcs Unit mm Devices per reel 3000Pcs Unit mm Package dimension： www.leadchip.com.cn 6 Your final power solution