XRP7613IDBTR-F Datasheet, PDF (2/14 Pages) Exar Corporation – 1.2A 36V Step Down High Brightness LED Driver

XRP7613
1.2A 36V Step Down High Brightness 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 .................................................... 40V
ISEN Voltage ................................(VIN+0.3V) to (VIN-5V)
EN/DIM Voltage............................................-0.3V to 5V
Junction Temperature .......................................... 150°C
Storage Temperature .............................. -65°C to 150°C
Lead Temperature (Soldering, 10 sec).................... 260°C
ESD Rating (HBM - Human Body Model) ..........................
All pins................................................................ 2kV
OPERATING RATINGS
Input Voltage Range VIN...................................... 7V-36V
Operating Temperature Range ................... -40°C to 85°C
Thermal Resistance ......................................................
ϴJA1 ............................................................... 60°C/W
ϴJC1 ............................................................... 15°C/W
Note 1: Package is placed on 2-layer PCB with 2 ounces
copper and 2 square inch, connected with 8 vias.
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Ambient Temperature of TJ = TA = 25°C only; limits applying over the
full Operating Ambient Temperature range are denoted by a “•”. 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 = 12V, L=47µH, 1 x LED and ILED=330mA and TA= 25°C.
Parameter
Min.
Quiescent Current
Mean Current Sense Threshold
Voltage
ISEN Threshold Hysteresis
ILED Output Current Range
Efficiency
Switch On Resistance RDS(ON)
Switch Leakage Current
Operating Frequency fSW
Minimum Switch On Time
Minimum Switch OFF Time
VREF Voltage
VREF Output Current
Recommended Duty Cycle
Range at fSW_MAX
Under Voltage Lock Out
Threshold
Maximum Dimming Frequency
EN/DIM Input Level Logic High
EN/DIM Input Level Analog
EN/DIM Input Level Logic Low
EN/DIM Shutdown Delay
EN/DIM Pull Up Current
Thermal Shutdown
Temperature
Thermal Shutdown Hysteresis
Thermal Regulation Input
Level
95
-15
150
2.46
30
1.3
0.4
Typ.
0.5
35
100
93
0.5
1
350
180
280
2.5
6
5.5
16
3.7
150
30
0.4
0.28
Max.
1
45
105
+15
1200
5
2.54
250
70
40
1.25
0.2
Units
mA
µA
mV
%
mA
%
Ω
µA
kHz
ns
ns
V
µA
%
V
kHz
V
V
V
ms
µA
°C
°C
V
Conditions
Output switching
EN/DIM floating, f=250kHz
Output not swithing
EN/DIM<0.2V
Measured on ISEN pin with respect to VIN.
VIN=12V
VIN=12V, VOUT=7.2V, L=47µF, ILED=330mA
N-MOSFET (PVDD2=5V)
EN/DIM floating, L=47µF, ILED=330mA,1xLED
VIN Rising
VIN Falling
R1=10kΩ, RTH=1.91kΩ
R1=10kΩ, RTH=1.265kΩ
© 2012 Exar Corporation
2/13
Rev. 1.2.0