L5200 UTC | Alldatasheet
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UNISONIC TECHNOLOGIES CO., LTD L5200 CMOS IC www.unisonic.com.tw 1 of 7 Copyright © 2005 Unisonic Technologies Co., Ltd QW-R502-029,D LOW NOISE, REGULATED CHARGE PUMP DC/DC CONVERTERS 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 ~ V OUT input with up to 100mA of output current. Low external parts counts (one flying capacitor and two small bypass capacitors at V IN and VOUT) make the UTC L5200-xx series ideally suited for small, battery-powered applications. A charge-pump architecture ma intains 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 V IN 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. FEATURES * Low Noise Constant Frequency Operation * Output Current: 100mA * 2MHz Switching Frequency * 4.5V/5.0V Fixed Output Voltage * V IN Range: 2.7V ~ VOUT * Automatic Soft-Start. * No Inductors * Less than 1µA of Shutdown Current MSOP-8 SOT-261 TSOT-26 2 3 456 2 3 456 *Pb-free plating product number: L5200L ORDERING INFORMATION Ordering Number Normal Lead Free Plating Package Packing L5200-AD-SM1-R L5200L-AD-SM1-R MSOP-8 Tape Reel L5200-AD-SM1-T L5200L-AD-SM1-T MSOP-8 Tube L5200-xx-AG6-R L5200L- xx-AG6-R SOT-26 Tape Reel L5200-xx-AH6-R L5200L-xx-AH6-R TSOT-26 Tape Reel Note: xx :output voltage L5200L-AD-SM1-R (1)Packing Type (2)Package Type (4)Lead Plating (1) R: Tape Reel, T: Tube (2) SM1: MSOP-8, AG6: SOT-26, AH6: TSOT-26 (4) L: Lead Free Plating , Blank: Pb/Sn (3)Output Voltage (3) AD: ADJ, xx: 45:4.5V, 50:5.0V
UNISONIC TECHNOLOGIES CO., LTD 2 of 7 www.unisonic.com.tw Q W - R 5 0 2 - 0 2 9 , D MARKING (For SOT-26/TSOT-26) Voltage Code L E Lead Plating PIN CONFIGURATIONS MSOP-8 VOUT FB SHDN SGNDPGND VIN C + SOT-26/TSOT-26 VIN C - C - VOUT GND SHDN UTC L5200-ADJ UTC L5200-XX (Fixed) PIN DESCRIPTION PIN NO. L5200-ADJ L5200-xx MSOP-8 SOT-26/TSOT-26 PIN NAME FUNCTION 1 6 C+ Flying Capacitor Positive Terminal 2 5 V IN Input Supply Voltage, should be bypassed with a 1µF~4.7µf low ESR ceramic capacitor. 3 4 C¯ Flying Capacitor Negative Terminal 4, 5 2 GND Ground terminal, should be tied to a ground plane for best performance 6 3 SHDN Shutdown Mode, Active-Low Input. A low on SHDN disables the L5200 series. SHDN must not be allowed to float. 7 X FB Feedback Input Pin for Adjustable output. An output divider should be connected from VOUT to FB to program the output voltage. 8 1 V OUT Regulated Output Voltage, should be bypassed with a 1µF~4.7µF low 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 3 of 7 www.unisonic.com.tw Q W - R 5 0 2 - 0 2 9 , D BLOCK DIAGRAM UTC L5200 Adjustable version (MSOP-8) CHARGE PUMP OSCILLATOR SWITCH CONTROL SHDN VOUT FB VIN SGND PGND C ERROR AMPLIFIER 1.268V SOFT - START UTC L5200 fixed version (SOT-26/TSOT-26) CHARGE PUMP OSCILLATOR SWITCH CONTROL SHDN VOUT VIN GND C ERROR AMPLIFIER 1. 268V SOFT- START
UNISONIC TECHNOLOGIES CO., LTD 4 of 7 www.unisonic.com.tw Q W - R 5 0 2 - 0 2 9 , D ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Input Voltage(to GND) V IN -0.3 ~ 6 V Charge Pump Voltage(to GND) V OUT -0.3 ~ 5.5 V Shutdown Voltage(to GND) VSHDN -0.3 ~ (VIN+0.3) V Maximum DC Output Current (Note 1) I OUT 150 mA VOUT Short-Circuit Duration Indefinite Operating Temperature T OPR -20 ~ +85 Ċ Storage Temperature T STG -40 ~ +150 Ċ 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 0Ċ~+70Ċ operating temperature range and assured by design from -20Ċ~+85Ċ, characteristic and correlation with static process control. ELECTRICAL CHARACTERISTICS (Ta =25Ċ, VIN =3.6V, CFLY=1µF, CIN=1µF, COUT=1µF, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Input Supply Voltage Range V IN *2 . 7 V OUT V VIH *1 . 3 V Shutdown Input Threshold VIL * 0.4 V Feedback Voltage (For L5200-ADJ) VFB * 1.217 1.268 1.319 V Output Ripple Voltage(For L5200-fixed) VR V IN=3V, IOUT=100mA 30 mV P-P Operating Supply Current I CC IOUT=0mA, SHDN =VIN * 3.5 8 mA Shutdown Current ISHDN SHDN =0V, VOUT=0V * 1 µA IIH SHDN =VIN * -1 1 µA Shutdown Input Current IIL SHDN =0V * -1 1 µA Feedback Input Current (For L5200-ADJ) IFB V FB=1.4V * -50 50 nA Open-Loop Output Resistance R OL VIN=3V, IOUT=100mA VFB=0V (ROL ≡ (2VIN – VOUT)/IOUT) 9.2 Ω Switching Frequency F OSC 1 2 MHz Efficiency (For UTC L5200-fixed) η V IN=3V, IOUT=50mA 80 % Soft Start Time t ON VIN=3V, IOUT=0mA 10%~90% 0.8 ms Note: * stand for specifications which apply over the designed operating temperature range.
UNISONIC TECHNOLOGIES CO., LTD 5 of 7 www.unisonic.com.tw Q W - R 5 0 2 - 0 2 9 , D TYPICAL APPLICATION CIRCUIT SHDN VOUTVIN GND C+C 1DŽF VIN VOUT = 5V +_ 2% ONOFF 2. 7V ~ IOUT UP ~ 40 mA, VIN ≥ 2.7V IOUT UP ~ 100mA , VIN ≥ 3. 1V UTC L5200-5.0V Regulated 5V Output from a 2.7V ~ V OUT Input VIN = 3V 02 5 5 0 7 5 1 0 0 OUTPUT CURRENT (mA) OUTPUT RIPPLE V P -P) CFLY = 1 Ta = 25 Ċ COUT = 1 COUT = 2.2 Output Ripple Voltage vs Load Current 1 1DŽFDŽF DŽF DŽF DŽF VOUT White or Blue LED Driver with LED Current Control (UTC L5200-ADJ) SHDN SHDNV( APPLY PWM WAVEFORM FOR ADJUSTABLE BRIGHTNESS CONTROL) 3V ~ 4.4V Li - Ion BATTERY ON OFF 1DŽF t C+ C- VIN V OUT SGND PGND FB 82Ƹ 82 82 82 82 82 UP TO 6 LEDS 1DŽF 1DŽF ƸƸƸƸƸ USB Port to Regulated 5V Power Supply ( UTC L5200-5.0V) 1ȰF VOUT 5V±2% 50mA UTC L5200-5.0V 1ȰF1ȰFUSB Port
UNISONIC TECHNOLOGIES CO., LTD 6 of 7 www.unisonic.com.tw Q W - R 5 0 2 - 0 2 9 , D TYPICAL CHARACTERISTICS (L5200-5.0V) 5.15 CIN = COUT = CFLY = 1ȰF 5.05 4.95 4.85 Supply Voltage (V) Output Voltage (V) IOUT = 20mA 4.90 5.00 5.10 Output Voltage vs Supply Voltage Ta = 85¥ Ta = 25¥ Ta = -40¥ 5.2 CIN = COUT = CFLY = 1ȰF 4.8 0 50 100 150 200 Load Current (mA) O utput Voltage (V) 4.9 5.0 5.1 Output Voltage vs Load Current VIN = 2.7V Ta = 25¥ VIN = 3V VIN = 3.2V CIN = COUT = CFLY = 1ȰF Supply Voltage (V) Supply Current (m No Load Supply Current vs Supply Voltage Ta = 85¥ Ta = 25¥ Ta = -40¥ 3.0 2.4 1.6 1.0 Supply Voltage (V) O scillator Frequency (M Hz) Oscillator Frequency vs Supply Voltage Ta = 85¥ Ta = 25¥ Ta = -40¥ VSHDN = VIN 2.8 2.6 2.2 2.0 1.8 1.4 1.2 1.1 0.9 0.7 0.5 Supply Voltage (V) Threshold Voltage (V) Ta = 85¥ Ta = 25¥ Ta = -40¥ 1.0 0.8 0.6 VSHDN Threshold Voltage vs Supply Voltage 100 11 0 1 0 0 Load Current (mA) Efficiency (% Efficiency vs Load Current CIN = COUT = CFLY = 1ȰF VIN = 2.7VTa = 25¥ VIN = 3.2V VIN = 3.7V VIN = 4.5V
UNISONIC TECHNOLOGIES CO., LTD 7 of 7 www.unisonic.com.tw Q W - R 5 0 2 - 0 2 9 , D TYPICAL CHARACTERISTICS (L5200-5.0V) (cont.) 250 200 150 100 Supply Voltage (V) Output Current (mA) Ta = 25¥ Short Circuit Current vs Supply Voltage CFLY = 1ȰF VOUT = 0V VOUT 1V/DIV VOUT Soft-Start Ramp 200Ȱs/DIVVIN = 3V VSHDN 2V/DIV VOUT (AC COUPLED) 50mV/DIV Load Transient Response 10Ȱs/DIVVIN = 3.3V IL 10mA ~ 90mA 50mA/DIV COUT = 1ȰF VOUT (AC COUPLED) 20mV/DIV Output Ripple 200ns/DIVVIN = 3.3V COUT = 10ȰF COUT = 3.3ȰF COUT = 1ȰF IL = 100mA 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.