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| SP6699EK-L-TR Datasheet, PDF (2/13 Pages) Exar Corporation – 27V Step Up White LED Driver | |||
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SP6699
27V Step Up White LED Driver
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 periods of time may affect
reliability.
Input Voltage VIN .................................................... 20V
SW Voltage............................................................ 27V
FB Voltage ............................................................. 20V
CTRL Voltage ......................................................... 20V
Operating Junction Temperature ........................... 150ºC
Storage Temp. Range TSTG ....................... -65ºC to 150ºC
Lead Temperature (sold. 10s) TLEAD ..................... 260ºC
ESD Ratings â Human Body Model ......................... 2000V
ESD Ratings â Machine Model .................................250V
Moisture Sensitivity Level (MSL) ................................... 3
OPERATING RATINGS
Input Voltage Range VIN................................2.7V to 16V
Operating Temperature Range ................... -40°C to 85°C
CTRL Voltage VCTRL .................................................. 16V
Thermal Resistance (junction to Atm.) RθJA ..........265°C/W
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Junction Temperature of TA = 25°C only; limits applying over the full
Operating Junction Temperature range are denoted by a ââ¢â. Minimum and Maximum limits are guaranteed through test,
design, or statistical correlation. Typical values represent the most likely parametric norm at TA = 25°C, and are provided
for reference purposes only. Unless otherwise indicated, VIN = 3V, VCTRL = 3V, TA= 25°C.
Parameter
Operating Voltage
Feedback Voltage VFB
FB Pin Bias Current IFB
Supply Current ICC
Supply Current IQ
Switching Frequency f
Maximum Duty Cycle DMAX
Switch Current Limit (Note 1)
ILIMIT
Switch VCE Saturation Voltage
VCESAT
Switch Leakage Current
CTRL Pin Voltage VCTRL - High
CTRL Pin Voltage VCTRL â Low
CTRL Bias Current ICTRL
Schottky Forward Drop VDROP
Schottky Leakage Current
Soft Start Time t
Min.
2.5
188
1.3
2.0
0.7
90
1.8
40
Typ.
200
35
2.0
3.2
1.0
93
500
250
360
0.01
55
50
75
0.7
0.1
300
Max.
16
212
100
2.7
5.0
1.3
5
0.05
72
4
150
Units
V
mV
nA
mA
µA
MHz
%
mA
mA
mV
µA
V
V
µA
µA
µA
V
µA
µA
µs
Conditions
⢠IOUT=20mA, 4 LEDs
VFB = VIN, not switching
VCTRL = 0V
TA=25°C, D=40%
TA=25°C, D=80%
ISW=250mA
VSW=5V
TA=85°C
TA=-40°C
ID=150mA
VR=23V
VR=27V
Note 1: The switch current limit is related to the duty cycle. Refer to figure 16 for details.
© 2011 Exar Corporation
2/12
Rev. 2.1.0
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