TM MP3011 1x, 1.5x, 2x High Efficiency Charge Pump 2 White LED Driver TM The Future of Analog IC Technology DESCRIPTION FEATURES The MP3011 is a fully automatic driver for 2% LED Current Matching powering two white LEDs, with up to 4V forward High Efficiency (>93%) voltage, from a single Li-Ion or three NiMH cells. Current Source Outputs The driver performs all of the sensing and No Ballast Resistors Required control to run the LEDs at an optimum charge 1x, 1.5x and 2x Automatic Modes pump ratio for efficiency without an expensive Constant Frequency Operation inductor. The driver allows PWM operation to Automatic LED Detection support brightness control. High and Low Frequency PWM Capability The tiny 3mm x 3mm QFN16 package and 2.5V to 5.5V Operation small external capacitors allow for the most Less than 1A Leakage during Shutdown compact white LED solution available. Detects Changes in Battery Level No External Schottky Diode Required EVALUATION BOARD REFERENCE Soft-Start and Soft Switching Operation Board Number Dimensions APPLICATIONS EV3011DQ-00A 2.4 x 1.9 x 0.4 Cell Phones PDA or Hand Held Computers White LED Application at 3.6V Supply MPS and The Future of Analog IC Technology are Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION Efficiency vs MP3011 Supply Voltage 5, 13 4 BATT BATT C1A V = 3.35V 40mA LED 100 I =10mA LED 12 7 I =40mA 90 LED ENABLE EN C1B 80 11 6 70 RADJ C2A 60 3, 10 9 50 GND GND C2B I =20mA 40 LED 15 30 LED1 20 8 16 LEDC LED2 10 LED2 LED1 0 2.5 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (V) MP3011 Rev. 1.2 www.MonolithicPower.com 1 10/11/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2007 MPS. All Rights Reserved. EFFICIENCY (%)TM MP3011 1X, 1.5X, 2X AUTO-ADJUST CHARGE PUMP 2 WHITE LED DRIVER (1) PACKAGE REFERENCE ABSOLUTE MAXIMUM RATINGS V to GND .............................................. 6.5V BATT TOP VIEW PIN 1 ID Power Dissipation..................................... 1.0 W LED2 LED1 NC BATT Logic Inputs to GND ..................... 0.3V to 6.5V 16 15 14 13 Storage Temperature ...............65 C to 150 C NC 1 12 EN Junction Temperature...............................150C NC 2 11 RADJ (2) Recommended Operating Conditions GND 3 10 GND Input Voltage V ......................... 2.5V to 5.5V BATT (3) Operating Temperature .........40C to +85 C C1A 4 9 C2B (4) Thermal Resistance 5 6 7 8 JA JC QFN16 .................................... 60...... 14... C/W BATT C2A C1B LEDC EXPOSED PAD CONNECT TO PIN 8 Notes: 1) Exceeding these ratings may damage the device. 2) The device is not guaranteed to function outside of its Part Number* Package Temperature operating conditions. 3) Ambient Operating Temperature. QFN16 MP3011DQ 40 C to +85C 4) Measured on approximately 1 square of 1 oz copper. (3mm x 3mm) For Tape & Reel, add suffix Z (eg. MP3011DQZ) * For RoHS compliant packaging, add suffix LF (eg. MP3011DQLFZ) ELECTRICAL CHARACTERISTICS V = 5V, T = +25 C, unless otherwise noted. BATT A Parameter Symbol Condition Min Typ MaxUnits Input Supply Voltage V 2.5 5.5 V BATT I = 40mA, V Decreasing, LED BATT V at 1x to 1.5x Mode Switch V 3.9 V BATT BATT 1x-1.5x V = 3.75V 40mA LED I = 40mA, V Decreasing, LED BATT V at 1.5x to 2x Mode Switch V 2.9 V BATT BATT 1.5x-2x V = 3.75V 40mA LED V Increasing, BATT V at 2x to 1.5x Mode Switch V 3.1 V BATT BATT 2x-1.5x V = 3.75V 40mA LED V Increasing, BATT V at 1.5x to 1x Mode Switch V 4.1 V BATT BATT 1.5x-1x V = 3.75V 40mA LED 2 LEDs at 40mA, 2x Mode, Supply Current I 164 mA BATT V = 2.5V BATT Supply Current Shutdown I V = 0V 0.1 1 A BATT SHDN EN (5) Current Matching I I = 40mA 1.5 % LED MATCH LED Enable Voltage, High V 1.5 V EN (HIGH) Enable Voltage, Low V 1.0 V EN (LOW) Enable Pin Leakage I V = 5V 0.1 1 A EN EN Charge Pump Frequency F V = 3.3V 1.0 1.3 1.6 MHz CP BATT (6) Time to Standby Mode T Enable Switched Low 30 s OFF Enable Pin PWM Frequency Limit F 50 KHz HPWM LED Current I R = 1.54k 40 mA LED SET Notes: 5) Matching is defined as the difference of the maximum to minimum current divided by the sum of the maximum and minimum currents. 6) Standby mode switches to shutdown when the output voltage on LEDC drifts back to GND. MP3011 Rev. 1.2 www.MonolithicPower.com 2 10/11/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2007 MPS. All Rights Reserved.