EV1519DQL-00A

1x, 1.5x, 2x High Efficiency Charge Pump

3 White LED Driver Evaluation Board

EV1519DQL-00A Rev. 1.1

www.MonolithicPower.com

1

10/27/2005

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2005 MPS. All Rights Reserved.

The Future of Analog IC Technology

TM

TM

DESCRIPTION

The EV1519DQL-00A is an evaluation board for

the MP1519, a fully automatic driver for

powering three 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

3

Input Voltage

2.5 – 5.5

V

LED Current

20

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 1µA 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.

EV1519DQL-00A EVALUATION BOARD

Dimensions (2.3”X x 1.8”Y x 0.4”Z)

Board Number

MPS IC Number

EV1519DQL-00A

MP1519DQL

100

90

80

70

60

50

40

30

20

10

2.5

3.0

3.5

4.0

4.5

SUPPLY VOLTAGE (V)

MP1519L_EC01

Efficiency vs

Supply Voltage