Absolute Maximum Ratings

These are stress ratings only and functional operation is not implied

Exposure to absolute

maximum ratings for prolonged time periods may affect device reliability

All voltages are with

respect to ground

.

.

.

Supply Voltage.............................................6.0V

Output Current............................................50mA

I/O Pin Voltage Range.........GND-0.3V to V +0.3V

Maximum SW Pin Voltage...............................40V

Storage Temperature.....................-40 C to 150 C

Maximum Junction Temperature..................150 C

Soldering Temperature.......................300 C,5sec

DD

OO

O

O

Recommended Operating Conditions

Supply Voltage Range........................2.8V to 5.5V

Operation Temperature Range..........-40 C to 85 C

Junction Temperature Range.............0 C to 125 C

OO

OO

Thermal Information

4

Electrical Characteristic

V =V =5.0V, 10 LEDs, T =25

unless otherwise noted

EN

DD

A

,.

PAM2841

1.5A SW Current, 40V Precision WLED Driver

,

Power Analog Microelectronics Inc

www.poweranalog.com

Parameter

Symbol

Package

Maximum

Unit

MSOP

180

°C/W

Thermal Resistance

(Junction to Ambient)

DFN

102

°C/W

MSOP

40

°C/W

Thermal Resistance

(Junction to Case)

DFN

20

°C/W

Parameters

Symbol

Test Conditions

MIN.

TYP.

MAX.

UNITS

Supply Voltage Range

2.7

5.5

V

Quiescent Current

No Switching

200

300

μA

Shutdown Current

1

μA

R3=5.1Ω

40

R3=6.8Ω

30

R3=10Ω

20

Output Current

R3=20Ω

10

mA

Output Voltage Range

40

V

Feedback Voltage

194

200

206

mV

SW On Resistance

0.35

0.5

Ω

SW Current Limit

Switch On

1.5

A

SW Frequency

0.7

1.0

1.3

MHz

Maximum Duty Cycle

DC

95

%

Over Voltage Protection Threshold

OVP

Open Load

1.2

V

Chip Shutdown

0.4

Enable Threshold Voltage

Chip On

1.2

V

Under Voltage Lockout

UVLO

2.0

2.2

2.4

V

UVLO Hysterisis

0.2

V

Over Temperature Shutdown

OTS

150

°C

Over Temperature Hysterisis

OTH

30

°C

08/2008 Rev 1.3