UNISONIC TECHNOLOGIES CO., LTD L5201 CMOS IC LOW NOISE, REGULATED CHARGE PUMP DC/DC CONVERTERS MSOP-8 6 5 4 DESCRIPTION The UTC L5201-xx series are low noise, constant frequency charge pump DC/DC converters and designed to increase efficiency in white LED application. The operating voltage range is 2.7V ~ VOUT input with up to 100mA of output current. Low external parts counts (one flying capacitor and two small bypass capacitors at VIN and VOUT) make the UTC L5201-xx series ideally suited for small, battery-powered applications. A charge-pump architecture maintains constant switching frequency to zero load and reduces both output and input ripple. The UTC L5201-xx series have thermal shutdown capability to escape the device damaged from a continuous short-circuit. With built-in soft-start circuitry to prevents excessive current flow at VIN during start-up. High switching frequency enables the use of small ceramic capacitors. A low-current shutdown feature disconnects the load from VIN and reduces quiescent current to <1µA. The L5201-ADJ is available in MSOP-8 package and L5201-fixed in SOT-26 and TSOT-26 package. 1 6 5 2 3 SOT-26 4 1 2 3 TSOT-26 *Pb-free plating product number: L5201L FEATURES * Low Noise Constant Frequency Operation * Output Current: [email protected]<VIN<5V [email protected]<VIN<4.5V * 1MHz Switching Frequency * 4.5V/5.0V Fixed Output Voltage * VIN Range: 2.7V ~ VOUT * Automatic Soft-Start. * No Inductors * Less than 1µA of Shutdown Current ORDERING INFORMATION Ordering Number Normal Lead Free Plating L5201-AD-SM1-R L5201L-AD-SM1-R L5201-AD-SM1-T L5201L-AD-SM1-T L5201-xx-AG6-R L5201L-xx-AG6-R L5201-xx-AH6-R L5201L-xx-AH6-R Note: xx :output voltage Package Packing MSOP-8 MSOP-8 SOT-26 TSOT-26 Tape Reel Tube Tape Reel Tape Reel L5201L-AD-SM1-R (1)Packing Type (2)Package Type (3)Output Voltage (4)Lead Plating www.unisonic.com.tw Copyright © 2005 Unisonic Technologies Co., Ltd (1) R: Tape Reel, T: Tube (2) SM1: MSOP-8, AG6: SOT-26, AH6: TSOT-26 (3) AD: ADJ, xx: 45:4.5V, 50:5.0V (4) L: Lead Free Plating, Blank: Pb/Sn 1 of 7 QW-R502-107,A L5201 CMOS IC MARKING (For SOT-26/TSOT-26) 6 5 4 Lead Plating LF Voltage Code 1 2 3 PIN CONFIGURATIONS SOT-26/TSOT-26 MSOP-8 C+ 1 VIN 2 C- 3 UTC L5201-ADJ PGND 4 8 VOUT 7 FB 6 SHDN 5 SGND VOUT 1 GND 2 SHDN 3 UTC L5201-XX (Fixed) 6 C+ 5 V IN 4 C- PIN DESCRIPTION L5201-ADJ MSOP-8 1 PIN NO. L5201-xx SOT-26/TSOT-26 6 PIN NAME C+ 2 5 VIN 3 4 C¯ 4, 5 2 GND 6 3 SHDN FUNCTION Flying Capacitor Positive Terminal Input Supply Voltage, should be bypassed with at least 6.8µf low ESR ceramic capacitor. Flying Capacitor Negative Terminal Ground terminal, should be tied to a ground plane for best performance Shutdown Mode, Active-Low Input. A low on SHDN disables the L5201 series. SHDN must not be allowed to float. Feedback Input Pin for Adjustable output. An output divider should be 7 X FB connected from VOUT to FB to program the output voltage. Regulated Output Voltage, should be bypassed with at least 6.8µf low 8 1 VOUT ESR ceramic capacitor as close as possible to the pin for best performance X : The pin is Inexistent for SOT-26 and TSOT-26 package. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 7 QW-R502-107,A L5201 CMOS IC BLOCK DIAGRAM UTC L5201 Adjustable version (MSOP-8) SWITCH CONTROL SOFT - START SHDN FB - ERROR AMPLIFIER + OSCILLATOR 1.268V VOUT CHARGE PUMP + C VIN C SGND PGND UTC L5201 fixed version (SOT-26/TSOT-26) SWITCH CONTROL SOFT - START SHDN VOUT OSCILLATOR _ ERROR AMPLIFIER + 1. 268V CHARGE PUMP C+ V IN C _ GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 7 QW-R502-107,A L5201 CMOS IC ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Input Voltage(to GND) VIN -0.3 ~ 6 V Charge Pump Voltage(to GND) VOUT -0.3 ~ 5.5 V V SHDN -0.3 ~ (VIN+0.3) Shutdown Voltage(to GND) V Maximum DC Output Current (Note 1) IOUT 150 mA VOUT Short-Circuit Duration Indefinite Operating Temperature TOPR -40 ~ +85 ℃ Storage Temperature TSTG -40 ~ +150 ℃ Note: 1. Based on long-term current density limitations. 2. 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. ELECTRICAL CHARACTERISTICS (VCC=VSHDN = 3V, Ta=25°C, CFLY=1µF, CIN=10µF, COUT=10µF, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN Input Voltage VIN VOUT=5.0V 2.7 2.7V＜VIN＜5V, IOUT=0mA, No Switching Supply Current IQ SHDN=VIN, VOUT=5.5V 2.7V＜VIN＜5V, IOUT≤ 50mA L5201-4.5V 4.32 3.0V＜VIN＜5V, IOUT≤ 100mA Output Voltage VOUT 2.7V＜VIN＜5V, IOUT ≤ 40mA L5201-5.0V 4.8 3.0V＜VIN＜5V, IOUT≤ 90mA SHDN Input Threshold High Low Feedback Voltage (For L5201-ADJ) Ripple Voltage (For L5201-Fixed) Shutdown Supply Current VIH VIL VFB VR ISHDN Feedback Input Current (For L5201-ADJ) IFB Efficiency (For L5201-Fixed) η Frequency VOUT Turn-on time FOSC tON Short-Circuit Current ISC Thermal Shutdown Temperature Thermal Shutdown Hysteresis TSD MAX VOUT UNIT V 90 140 µA 4.5 4.68 5 5.2 V 1.4 1.217 VIN = 3V, IOUT = 50mA VIN = 3V, IOUT = 90mA 2.7V＜VIN＜5V, IOUT=0mA, VSHDN = 0 VFB=1.4V VIN = 2.7V, IOUT = 40mA VIN = 3V, IOUT = 90mA Oscillator Free Running VIN = 3V, IOUT = 0mA VIN = 3V, VOUT = GND, SHDN = 3V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TYP 1.268 25 25 -50 0.7 88 80 1 0.35 0.3 1.319 V V V mVP-P 1 µA 50 nA % 1.3 MHz ms 340 mA 150 30 ℃ ℃ 4 of 7 QW-R502-107,A L5201 CMOS IC TYPICAL APPLICATION CIRCUIT 10µF 4 C VIN 2.7 V ~ VOUT 5 10 µF 2 3 OFF ON _ VIN 6 C+ V OUT GND 1 10µF VOUT = 5 V _ + 2% , IOUT UP~ 40 mA V IN ≥ 2 .7V , I OUT UP ~ 90 mA V IN ≥ 3.0V SHDN CIN, C OUT: TAIYO YUDEN, JMK212BJ106KG CFLY: TAIYO YUDEN, EMK212JB105KG UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 7 QW-R502-107,A L5201 CMOS IC TYPICAL CHARACTERISTICS Startup Time with 50mA Load T T VSHDN 1 Startup Time with 90mA Load T T VSHDN 1 VOUT 2 VOUT 2 Ch1 2.00V Ch2 2.00V 100µs Ch1 1.52V Ch1 2.00V Ch2 2.00V 100µs Ch1 1.52V Output Ripple With IOUT=50mA T T 1 1 Ch1 10.0mV Output Voltage (V) 5.2 Output Ripple With IOUT=90mA T T M 1.00µs Ch1 5.60mV Output Voltage vs Output Current Ch1 10.0mV 5.2 5.15 5.15 5.1 5.1 5.05 VIN=3.6V 5.05 5 5 4.95 4.95 M 1.00µs Ch1 5.40mV Output Voltage vs Supply Voltage Ta = 100℃ Ta = 25℃ 4.9 4.85 4.8 0 Ta = -40℃ 4.9 VIN=2.7V 10 20 VIN=3.0V 30 40 50 60 Output Current (mA) 70 80 90 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4.85 IOUT =20mA 4.8 2.5 3.0 3.5 4.0 4.5 Supply Voltage (V) 5.0 6 of 7 QW-R502-107,A L5201 CMOS IC TYPICAL CHARACTERISTICS(Cont.) Output Voltage vs Temperature 5.2 1100 5.1 Frequency (MHz) Output Voltage (V) Ta = 100℃ 1150 5.15 5.05 5 4.95 1050 -20 0 900 850 Ta = -40℃ 750 I OUT=50mA -40 950 800 VIN=3.0V 4.85 Ta = 25℃ 1000 4.9 4.8 Frequency vs Supply Voltage 1200 20 40 60 80 700 100 2.5 3.0 Temperature (℃) 100 1150 90 1100 80 1050 70 1000 950 900 20 750 40 20 40 60 80 100 Temperature (℃) VIN = 3.3V 40 800 0 VIN = 3.0V 50 30 -40 -20 5.0 VIN = 2.7V 60 850 700 4.5 Efficiency vs Load Current Frequency vs. Temperature Efficiency (%) Frequency (MHz) 1200 3.5 4.0 Supply Voltage (V) 0 0.01 VIN = 3.6V 0.1 1 10 100 Load Current (mA) 1000 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 7 of 7 QW-R502-107,A