Sept 11 - 07 Rev E

SP7121 Low Dropout LED Driver

© 2007 Sipex Corporation

Page 2

ABSOLUTE MAXIMUM RATINGS

These are stress ratings only and functional

operation of the device at these ratings or any

other above those indicated in the operation

sections of the specifications below is not

implied. Exposure to absolute maximum rating

conditions for extended period may affect

reliability.

Junction Temperature...........................+150°C

Operating Temperature….........….-40 to +85

Storage Temperature..............-65°C to +150°C

ESD Level..........................................2kV HBM

ESD Level Enable pin…….…… ….1.5KV HBM

ESD Level..........................................200V MM

Lead Temperature (Soldering, 10 sec)....300°C

RECOMMENDED OPERATING CONDITIONS

Ambient operating temperature ……. -40°C - +85°C

ELECTRICAL CHARACTERISTICS

Parameter

Min

Typ

Max

Units

Conditions

Vcc

2.7

5.5

V

Shutdown Current

0.04

1

µA

EN = LOW

1

135

200

mV

LED to LED Current Matching

1

0.2

1

%

Vcc = 5.5V, Vd > 200mV

LED Current Line Regulation

2

0.3

%/V

2.7V < Vcc < 5.5V

LED Current Load Regulation

3

0.3

mA/V

150mV < Vd < 1.0V

LED Current Thermal Regulation

0.01

%/

Vd = 300mV

EN ON Voltage (HIGH)

4

2.4

Vcc

V

EN OFF Voltage (LOW)

0

0.8

V

EN Input Bias Current

2

3

5

µA

EN Switching Frequency

20

kHz

EN ON Minimum Pulse Width

15

µs

LED current per channel

10

25

mA

1.17

1.21

1.26

V

200

205

210

4) EN input voltage should not exceed Vcc voltage at any condition