EV3011DQ-00A MPS | Alldatasheet
Document overview
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- PDF pages: 3
Technical content
1x, 1.5x, 2x High Efficiency Charge Pump
2 White LED Driver Evaluation Board
EV3011DQ-00A Rev. 1.1 www.MonolithicPower.com 1 10/27/2005 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. The Future of Analog IC Technology TM TM
DESCRIPTION
The EV3011DQ-00A is an evaluation board for the MP3011, a fully automatic driver for powering two white LEDs, with up to 4V forward voltage, from a single Li-Ion or three NiMH cells. The driver performs all of the sensing and control to run the LEDs at an optimum charge pump ratio for efficiency without an expensive inductor. The driver allows PWM operation to support brightness control. The tiny 3mm x 3mm QFN16 package and small external capacitors allow for the most compact white LED solution available. ELECTRICAL SPECIFICATIONS Parameter Symbol Value Units # of WLEDs 2 Input Voltage V IN 2.5 – 5.5 V LED Current I LED 40 mA
FEATURES
- 2% LED Current Matching
- High Efficiency (>93%)
- Current Source Outputs
- No Ballast Resistors Required
- 1x, 1.5x and 2x Automatic Modes
- Constant Frequency Operation
- Automatic LED Detection
- High and Low Frequency PWM Capability
- 2.5V to 5.5V Operation
- Less than 1 µA Leakage during Shutdown
- Detects Changes in Battery Level
- No External Schottky Diode Required
- Soft-Start and Soft Switching Operation
APPLICATIONS
- 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. EV3011DQ-00A EVALUATION BOARD (6.1cm x 4.8cm x 1.0cm) Board Number MPS IC Number EV3011DQ-00A MP3011DQ 100 EFFICIENCY (%) SUPPLY VOLTAGE (V) MP3011_EC01 Efficiency vs Supply Voltage VLED = 3.35V @ 40mA ILED=40mA ILED=20mA ILED=10mA
EV3011DQ-00A – 1X, 1.5X, 2X CHARGE PUMP 2 WHITE LED DRIVER EV BOARD EV3011DQ-00A Rev. 1.1 www.MonolithicPower.com 2 10/27/2005 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. TM EVALUATION BOARD SCHEMATIC MP3011 C1A C1B C2A C2B LED1 LED2 BATT EN RADJ GND LEDC GND TP_LEDC EN VIN LED2 LED1 EV3011_S01 5, 13 3, 10 EV3011DQ-00A BILL OF MATERIALS Qty Ref Value Description Package M anufacturer P/N Distributor P/N 3 C1, C2, C3 1 µF Ceramic Cap., 10V, X7R 0805 TDK: C2012X7R1A105K Digikey: 445-1359-1-ND 1 C4 4.7 µF Ceramic Cap., 6.3V, X5R 0805 TDK: C2012X5R0J475K Digikey: 445-1421-1-ND
2 LED1, LED2 Not Stuffed
1 R1 1.54k Ω Resistor, 1% 0805 Panasonic: ERJ-6ENF1541V Digikey: P1.54KCCT-ND
1 R2 100k Ω Resistor, 5% 0805 Panasonic:
Digikey: P100KACT-ND
2 R3, R4 0 Ω Resistor, 5% 0805 Yageo:
Digikey: 311-0.0ACT-ND