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SP7121 Fiches technique(PDF) 2 Page - Sipex Corporation

No de pièce SP7121
Description  2-Channel Adjustable Low Dropout High Side Linear LED Driver
PDF  11 Pages
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Fabricant  SIPEX [Sipex Corporation]
Site Internet  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP7121 Fiches technique(HTML) 2 Page - Sipex Corporation

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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.
Maximum LED current ILED1, ILED2……….30mA
Vcc, VLED1, VLED2, and EN to GND -0.3V to 6V
Junction Temperature...........................+150°C
Operating Temperature….........….-40 to +85
oC
Storage Temperature..............-65°C to +150°C
Package Thermal resistance θJA ……190°C/W
ESD Level..........................................2kV HBM
ESD Level Enable pin…….…… ….1.5KV HBM
ESD Level ISET pin (4)……...…..….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
Specifications are at TA=25
°C, Vcc = 2.7V to 5.5V, ENABLE =Vcc, ILED=15mA unless specified.
Parameter
Min
Typ
Max
Units
Conditions
Vcc
2.7
5.5
V
Shutdown Current
0.04
1
µA
EN = LOW
VLED Dropout Voltage, Vd
1
135
200
mV
Vcc = 5.5V, ILED = 20mA
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
Vcc=3.7V;
150mV < Vd < 1.0V
LED Current Thermal Regulation
0.01
%/
0C
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
VEN = Vcc = 5.5V
EN Switching Frequency
20
kHz
EN ON Minimum Pulse Width
15
µs
LED current per channel
10
25
mA
ISET Voltage
1.17
1.21
1.26
V
VEN=Vcc=3.7V
ISET current multiplication ratio
200
205
210
VEN=Vcc=3.7V
1) Difference between Vcc voltage and LED anode voltage at which ILED current drops 10% from nominal value
2) ILED Current Variations per Volt Vcc change
3) ILED Current Variations at Vd change from 0.15 to 1.0V
4) EN input voltage should not exceed Vcc voltage at any condition



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