UNISONIC TECHNOLOGIES CO., LTD L5200 CMOS IC LOW NOISE, REGULATED CHARGE PUMP DC/DC CONVERTERS MSOP-8 6 5 4 DESCRIPTION The UTC L5200-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 L5200-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 L5200-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 L5200-ADJ is available in MSOP-8 package and L5200-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: L5200L FEATURES * Low Noise Constant Frequency Operation * Output Current: 100mA * 2MHz 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 L5200-AD-SM1-R L5200L-AD-SM1-R L5200-AD-SM1-T L5200L-AD-SM1-T L5200-xx-AG6-R L5200L-xx-AG6-R L5200-xx-AH6-R L5200L-xx-AH6-R Note: xx :output voltage Package Packing MSOP-8 MSOP-8 SOT-26 TSOT-26 Tape Reel Tube Tape Reel Tape Reel L5200L-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-R502-029,D L5200 CMOS IC MARKING (For SOT-26/TSOT-26) 6 5 4 Lead Plating LE Voltage Code 1 2 3 PIN CONFIGURATIONS SOT-26/TSOT-26 MSOP-8 C+ 1 VIN 2 C- 3 UTC L5200-ADJ PGND 4 8 VOUT 7 FB 6 SHDN 5 SGND VOUT 1 GND 2 SHDN 3 UTC L5200-XX (Fixed) 6 C+ 5 V IN 4 C- PIN DESCRIPTION L5200-ADJ MSOP-8 1 PIN NO. L5200-xx SOT-26/TSOT-26 6 PIN NAME C+ 2 5 VIN 3 4 C¯ 4, 5 2 GND FUNCTION Flying Capacitor Positive Terminal Input Supply Voltage, should be bypassed with a 1µF~4.7µf 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 L5200 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 a 1µF~4.7µF 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. 6 3 SHDN UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 7 QW-R502-029,D L5200 CMOS IC BLOCK DIAGRAM UTC L5200 Adjustable version (MSOP-8) SWITCH CONTROL SOFT - START SHDN FB - ERROR AMPLIFIER + OSCILLATOR 1.268V VOUT CHARGE PUMP + C VIN C SGND PGND UTC L5200 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-R502-029,D L5200 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 -20 ~ +85 ℃ Storage Temperature TSTG -40 ~ +150 ℃ Note 1: Based on long-term current density limitations. 2: Stressed above Absolute Maximum Ratings may impair life or cause permanent damage to the device. 3. The device is guaranteed to meet performance specification within 0℃~+70℃ operating temperature range and assured by design from -20℃~+85℃, characteristic and correlation with static process control. ELECTRICAL CHARACTERISTICS (Ta =25℃, VIN =3.6V, CFLY=1µF, CIN=1µF, COUT=1µF, unless otherwise specified.) PARAMETER Input Supply Voltage Range Output Voltage SYMBOL VIN L5200-4.5V L5200-5.0V Shutdown Input Threshold Feedback Voltage (For L5200-ADJ) Output Ripple Voltage(For L5200-fixed) Operating Supply Current Shutdown Current VOUT VIH VIL VFB VR ICC I SHDN Feedback Input Current (For L5200-ADJ) IIH IIL IFB Open-Loop Output Resistance ROL Switching Frequency Efficiency (For UTC L5200-fixed) FOSC η Shutdown Input Current TEST CONDITIONS * IOUT≤100mA VIN=3V, IOUT=100mA IOUT=0mA, SHDN =VIN SHDN =0V, VOUT=0V SHDN =VIN SHDN =0V VFB=1.4V VIN=3V, IOUT=100mA VFB=0V (ROL ≡ (2VIN – VOUT)/IOUT) * * * * * * * * * MIN 2.7 4.41 4.9 1.3 TYP 1.217 1.268 30 3.5 -1 -1 -50 1 VIN=3V, IOUT=50mA VIN=3V, IOUT=0mA Soft Start Time tON 10%~90% Note: * stand for specifications which apply over the designed operating temperature range. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4.5 5 MAX VOUT 4.59 5.1 0.4 1.319 8 1 1 1 50 UNIT V V V V V V mVP-P mA µA µA µA nA 9.2 Ω 2 80 MHz % 0.8 ms 4 of 7 QW-R502-029,D L5200 CMOS IC TYPICAL APPLICATION CIRCUIT Regulated 5V Output from a 2.7V ~ VOUT Input Output Ripple Voltage vs Load Current 40 V IN = 3V C FLY = 1μF Ta = 25 ℃ 4 _ 6 C+ VIN V OUT C VIN 2 .7 V ~ VOUT 1μF 5 2 3 OFF ON 1 _ 2% VOUT = 5 V + , IOUT UP ~ 40 mA VIN ≥ 2 .7V , I OUT UP ~ 100 mA V IN ≥ 3 .1 V 1 μF GND OUTPUT RIP PLE (mVP -P ) 1μF SHDN 30 C OUT = 1μF 20 C OUT = 2.2μF 10 UTC L5200-5.0V 0 0 25 50 75 100 OUTPUT CURRENT (mA ) White or Blue LED Driver with LED Current Control ( UTC L5200-ADJ) 1μF 1 2 3V ~ 4.4V Li - Ion BATTERY 3 C- + C VIN V OUT UP TO 6 LEDS 8 1μF FB ON OFF 6 SGND SHDN PGND 1μF 7 5 82Ω 4 ( APPLY PWM WAVEFORM FOR VSHDN ADJUSTABLE BRIGHTNESS CONTROL ) 82Ω 82Ω 82Ω 82Ω 82Ω t USB Port to Regulated 5V Power Supply ( UTC L5200-5.0V) 1μF 5 3 USB Port 1μF 4 6 1 UTC L5200-5.0V VOUT 1μF 5V±2% 50mA 2 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 7 QW-R502-029,D L5200 CMOS IC TYPICAL CHARACTERISTICS (L5200-5.0V) Output Voltage vs Supply Voltage 5.15 CIN = COUT = CFLY = 1μF IOUT = 20mA 5.10 Ta = 25℃ 5.00 CIN = COUT = CFLY = 1μF Ta = 25℃ 5.1 Ta = 85℃ 5.05 Output Voltage (V) Output Voltage (V) Output Voltage vs Load Current 5.2 Ta = -40℃ 4.95 5.0 VIN = 3.2V VIN = 2.7V VIN = 3V 4.9 4.90 4.85 2.7 3.0 3.3 3.6 3.9 Supply Voltage (V) 4.2 4.8 4.5 No Load Supply Current vs Supply Voltage 100 150 Load Current (mA) 200 Oscillator Frequency vs Supply Voltage CIN = COUT = CFLY = 1μF VSHDN = V IN 2.8 Ta = 25℃ 5 50 3.0 Oscillator Frequency (MHz) Supply Current (mA) 6 0 Ta = 85℃ 4 Ta = -40℃ 2.6 Ta = 25℃ 2.4 2.2 Ta = -40℃ 2.0 Ta = 85℃ 1.8 1.6 1.4 1.2 3 2.7 3.0 3.3 3.6 3.9 Supply Voltage (V) 4.2 1.0 4.5 2.7 VSHDN Threshold Voltage vs Supply Voltage 3.9 4.2 4.5 CIN = COUT = CFLY = 1μF Ta = 25℃ VIN = 2.7V 90 1.0 80 Ta = -40℃ Ta = 25℃ 0.8 Ta = 85℃ Efficiency (%) Threshold Voltage (V) 3.6 Efficiency vs Load Current 100 0.7 3.3 Supply Voltage (V) 1.1 0.9 3.0 VIN = 3.2V 70 VIN = 3.7V 60 VIN = 4.5V 50 0.6 40 0.5 2.7 3.0 3.3 3.6 3.9 Supply Voltage (V) 4.2 4.5 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 30 1 10 Load Current (mA) 100 6 of 7 QW-R502-029,D L5200 CMOS IC TYPICAL CHARACTERISTICS (L5200-5.0V) (cont.) Short Circuit Current vs Supply Voltage Output Current (mA) 250 CFLY = 1μF Ta = 25℃ VOUT = 0V VOUT Soft-Start Ramp VSHDN 2V/DIV 200 VOUT 1V/DIV 150 100 2.7 3.0 3.3 3.6 3.9 4.2 VIN = 3V 4.5 200μs/DIV Supply Voltage (V) Output Ripple VOUT (AC COUPLED) 20mV/DIV Load Transient Response IL 10mA ~ 90mA 50mA/DIV COUT = 1μF COUT = 3.3μF COUT = 10μF VOUT (AC COUPLED) 50mV/DIV VIN = 3.3V IL = 100mA 200ns/DIV VIN = 3.3V COUT = 1μF 10μs/DIV 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-R502-029,D