MP3302 –40V, 1.3A, SINGLE-CELL STEP-UP WHITE LED DRIVER WITH SINGLE WIRE DIMMING CONTROL

MP3302 Rev. 0.98

www.MonolithicPower.com

3

5/5/2010

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© 2010 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

Parameters

Symbol

Condition

Min

Typ

Max Units

Operating Input Voltage

2.5

6

V

Supply Current (Shutdown)

4

8

µA

Supply Current (Quiescent)

690

850

µA

Switching Frequency

1.0

1.3

1.5

MHz

Maximum Duty Cycle

92

%

Under Voltage Lockout

IN Under Voltage Lockout

UVLO

2.25

2.45

V

Under Voltage Lockout

Hysteresis

92

mV

Open Lamp Shutdown

Threshold

40

42

44

V

Enable

EN OFF Threshold

0.4

V

EN ON Threshold

0.6

V

Minimum EN Dimming

Threshold

0.655

0.7

0.845

V

Maximum EN Dimming

Threshold

1.275

1.4

1.425

V

Feedback

FB Voltage

185

200

215

mV

FB Input Bias Current

-600

-300

nA

Output Switch

SW On-Resistance

(5)

0.5

Ω

SW Current Limit

(5)

Duty Cycle = 60%

1.33

A

Thermal Shutdown

(5)

150

°C

Notes:

5) Guaranteed by design.