ISL78100_15 Datasheet, PDF (2/19 Pages) Intersil Corporation – High Power LED Driver

ISL78100
Absolute Maximum Ratings (T_A = +25°C)
Maximum pin voltage, all pins except below 6.5V
VIN_, SWS1, SWS2, EN/PWM . . . . . . . . . . . . . . . . . . . . . . . . . . .18V
VBAT, FAULT, FB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24V
|VHI - SWS1, SWS2| . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5V
SWD1, SWD2, OVP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34V
Continuous Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1A
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C
Thermal Information
Thermal Resistance
_JA (°C/W) / _JC (°C/W)
20 Ld QFN Package (Notes 1, 2). . . . .
39
2.5
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +135°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests
are at the specified temperature and are pulsed tests, therefore: T_J = T_C = T_A
NOTES:
1. _JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
2. For _JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications V_BAT = V_IN = 12V, V_DC = 5V, T_A = -40°C to +105°C unless otherwise specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN
VIN
Input Supply Voltage
VIN
Input Supply Voltage
I_OUT = 350mA, 8 LEDs, BUCK/BOOSTN = GND
5
I_OUT = 350mA, 5 LEDs, BUCK/BOOSTN = GND,
2.7
TMAX disabled
V_BAT
V_BATFAULT
Input Supply Monitor
Supply Fault Threshold
Normal operating range
If V_BAT > V_BATFAULT, FAULT pin is switched to
ground
2.7
17.6
I_SE_N
I_SD_IS
R_SWITCH
V_DC
R_OUTOL
Supply Current in V_IN
Supply Current in V_IN
Power FET On-Resistance
Regulated Auxiliary Supply
Auxiliary Supply Open Loop Output
Resistance
No switching, EN/PWM = 1
No switching, EN/PWM = 0
I_SWITCH = 600mA
V_IN < V_DC
4.75
R_OUTCL
Auxiliary Supply Closed Loop Output V_IN > 6V, F < 100Hz
Resistance
I_OUT
I_LIMBOOST
I_LIMBUCK
OVPH
OVPL
V_GATE
V_GATE
V_FB
V_LEVEL
Output Drive Current
Power Switch Current Limit
Power Switch Current Limit
Overvoltage Positive Going Voltage
Mode Threshold
Overvoltage Negative Going Voltage
Mode Threshold
Protection FET VGS (Gate Clamp)
Protection FET VGS (Gate Clamp)
Feedback Voltage
Light Control Voltage Linear Input
Range
4 LED output string. V_IN = V_BAT = 10V
BUCK/BOOSTN = GND
BUCK/BOOSTN = VDC
Upper threshold to enter overvoltage fault mode,
T_A = +25°C
Lower threshold to exit overvoltage fault mode,
T_A = +25°C
V_IN - V_FAULT
V_FAULT - V_IN
System in regulation, V_LEVEL = 1V,
V_IN = 12V, 6 LEDs
Mode = 1, analog control of LED current
31
9.76
8.16
0.18
0.25
FB_{UV FAULT} Feedback Undervoltage Fault
V_LEVEL = 1V, EN/PWM = 3V
100
TYP MAX UNIT
16
V
12
V
16
V
21
24
V
2.7
3.5
mA
0.6
2.5
µA
0.15 0.25

5
5.25
V
40

6.5

1
A
3.6
A
2.4
A
32
V
20
23
V
12.2 14.64
V
10.2 12.24
V
0.2
0.22
V
3
V
160
200
mV
2
FN6626.1
December 24, 2013