MP2102 1.5MHz, 800mA Dual-Output Synchronous Step-Down Converter The Future of Analog IC Technology DESCRIPTION FEATURES Dual 800mA Outputs The MP2102 is a dual-output, internally Internal Power MOSFET Switches compensated, 1.5MHz fixed frequency PWM step-down converter. It is ideal for powering Up to 95% Efficiency portable equipment from a single cell Lithium- 1.5MHz Switching Frequency Ion (Li+) Battery. Each channel of the MP2102 1A Shutdown Current can supply 800mA of load current from a 2.5V Stable with Low ESR Output Ceramic Capacitors to 6V input voltage. Both output voltages can be Thermal Shutdown regulated as low as 0.6V. Cycle-by-Cycle Over Current Protection Short Circuit Protection The device features integrated high-side Power-On Reset with Programmable Delay switches and synchronous rectifiers for high 2.5V to 6V Operating Input Range efficiency step-down conversion without the need for external Schottky diodes. With peak Output Adjustable from 0.6V to 5.4V current mode control and internal compensation, Input Undervoltage Lockout the MP2102 can be stabilized with ceramic Available in 10-Pin QFN with Exposed Pad capacitors and small inductors. Fault condition and 10-Pin MSOP Packages. protection includes cycle-by-cycle current APPLICATIONS limiting and thermal shutdown. DVD+/-RW Drive The MP2102 is available in small 10-pin QFN Smart Phones with exposed pad and 10-pin MSOP packages. PDAs EVALUATION BOARD REFERENCE Digital Cameras Board Number Dimensions Portable Instruments EV2102DQ-00B 2.2X x 2.2Y x 0.4Z MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION Efficiency vs Load Current 3 9 100 V VIN DLY IN C4 2 3.3V V =1.8V EN1 90 1nF OUT 7 8 EN2 PWROK PWROK 80 MP2102 70 V =1.2V 6 4 OUT V OUT1 V SW2 SW1 OUT2 1.8V / 800mA 60 1.2V / 800mA 50 10 1 FB2 GND FB1 40 5 30 20 10 100 1000 LOAD CURRENT (mA) MP2102 Rev. 1.1 www.MonolithicPower.com 1 9/21/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2007 MPS. All Rights Reserved. EFFICIENCY (%)MP2102 1.5MHz, 800mA DUAL-OUTPUT SYNCHRONOUS STEP-DOWN CONVERTER PACKAGE REFERENCE TOP VIEW TOP VIEW FB1 1 10 FB2 EN1 2 9 DLY FB1 1 10 FB2 EN1 2 9 DLY VIN 3 8 PWROK VIN 3 8 PWROK SW1 4 7 EN2 SW1 4 7 EN2 GND 5 6 SW2 GND 5 6 SW2 EXPOSED PAD ON BACKSIDE CONNECT TO GROUND (PIN 5) Part Number* Package Temperature Part Number* Package Temperature QFN10 MP2102DQ MP2102DK MSOP10 40 C to +85C 40 C to +85C (3mm x 3mm) For Tape & Reel, add suffix Z (eg. MP2102DQZ) For Tape & Reel, add suffix Z (eg. MP2102DKZ) * * For RoHS Compliant Packaging, add suffix LF For RoHS Compliant Packaging, add suffix LF (eg. MP2102DQLFZ) (eg. MP2102DKLFZ) (1) (2) ABSOLUTE MAXIMUM RATINGS Recommended Operating Conditions VIN to GND.................................0.3V to +6.5V Supply Voltage V ............................. 2.5V to 6V IN SW1/2 to GND ..................... 0.3V to V + 0.3V Output Voltage V ....................... 0.6V to 5.4V IN OUT FB1/2, OUT1/2, EN1/2 to GND...0.3V to +6.5V Operating Temperature .............40 C to +85 C Operating Temperature............. 40C to +85C (3) Thermal Resistance JA JC Junction Temperature...............................150C QFN10 .................................... 50...... 12... C/W Lead Temperature ....................................260C MSOP10 ................................ 150..... 65... C/W Storage Temperature.............. 65C to +150C Notes: 1) Exceeding these ratings may damage the device. 2) The device is not guaranteed to function outside of its operating conditions. 3) Measured on approximately 1 square of 1 oz copper. (4) ELECTRICAL CHARACTERISTICS V = V = 3.6V, T = +25C, unless otherwise noted. IN EN A Parameter Symbol Condition Min Typ Max Units Supply Current V = V , V = 0.62V 750 A EN IN FB Shutdown Current V = 0V, V = 6V 0.01 1 A EN IN IN Under Voltage Lockout Rising Edge 1.7 2.0 2.3 V Threshold IN Under Voltage Lockout 100 mV Hysteresis Output Line Regulation V = 2.5V to 6V 0.03 %/V IN Output Load Regulation I = 50mA to 500mA 0.05 %/mA LOAD MP2102 Rev. 1.1 www.MonolithicPower.com 2 9/21/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2007 MPS. All Rights Reserved.