sp7120-led-driver Exar Corporation, sp7120-led-driver Datasheet - Page 2

• Manufacturer Part Number: sp7120-led-driver
• Description: Sp7122 -common Cathode Linear Led Driver
• Manufacturer: Exar Corporation

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.
Ambient operating temperature ..…. -40 to+85°C
Specifications are at T
Parameter
Vcc
Shutdown Current
VLED Dropout Voltage, Vd
VLED Dropout voltage, Vd
LED Current
Accuracy
Quiescent
Current
LED to LED Current Matching
LED Current Line Regulation
LED Current Load Regulation
LED Current Thermal Regulation
EN ON Voltage (HIGH)
EN OFF Voltage (LOW)
EN Input Bias Current
EN Switching Frequency
EN ON Minimum Pulse Width
1) Difference between Vcc voltage and LED anode voltage at which
2)
3)
4)
5) EN input voltage should not exceed Vcc voltage at any condition
6) This condition is part of the LED current accuracy and it shall not exceed that specification
Jan 7 ‘08 RevE
RECOMMENDED OPERATING CONDITIONS
I
I
I
LED Current Variations from specified value
LED Current Variations per volt Vcc change for any given temperature
LED Current Variations at V
2
A
=25˚C, Vcc = 2.7 to 5.5, ENABLE =Vcc
Version A
Version B
Version C
Version A
Version B
Version C
Version A
Version B
Version C
5
D
1
change from 0.3V to 1.0V
1
3
4
6
SP7120/22 Low Dropout LED Driver
Min
2.7
14
19
24
2
0
2
page
0.04
0.86
0.99
0.01
Typ
160
140
0.5
0.7
0.6
0.9
0.8
15
20
25
3
2
Max
I
200
180
Vcc
5.5
0.7
1.1
1.7
0.8
1.2
1.9
.25
1.0
0.8
16
21
26
20
15
LED current drops 10% from nominal value
5
1
Operating Temperature…..........….-40 to +85
Storage Temperature...............-65°C to +150°C
Package Thermal resistance θ
ESD Level EN……………….……….1.5kV HBM
Vcc, V
ESD Level...........................................200V MM
Lead Temperature (Soldering, 10 sec) …300°C
ESD Level...........................................2kV HBM
Junction Temperature............................+150°C
%/mA
Units
%/
%/V
kHz
mV
mV
mA
mA
μA
μA
μs
%
V
V
V
LED1
0
C
, V
ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
Conditions
EN = LOW
Vcc = 5.5V, I
Vcc = 5.5V, I
300mV<V
300mV<V
300mV<V
SP7120 at V
SP7122 at V
Vcc = 5.5V, V
2.7V < Vcc < 5.5V
300mV < V
V
V
LED2
D
EN
= 300mV
, and EN to GND
= Vcc = 5.5V
D
D
D
<1.0V
<1.0V
<1.0V
D
D
D
LED
LED
< 1.0V
D
© 2007 Sipex Corporation
= 300mV
= 300mV
> 300mV
= 20mA
= 15mA
JA
….…190°C/W
-0.3V to 6V
o
C