ISL78100ARZ Intersil, ISL78100ARZ Datasheet - Page 2

• Manufacturer Part Number: ISL78100ARZ
• Description: IC LED DRIVER AUTOMOTIVE 20-QFN
• Manufacturer: Intersil
• Type: Automotiver

Specifications of ISL78100ARZ

• Topology: PWM, Step-Down (Buck), Step-Up (Boost), Switched Capacitor (Charge Pump)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Automotive, Backlight
• Frequency: 800kHz ~ 1.2MHz
• Voltage - Supply: 2.7 V ~ 16 V
• Voltage - Output: 32V
• Mounting Type: Surface Mount
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Operating Temperature: -40°C ~ 105°C
• Current - Output / Channel: 1A
• Internal Switch(s): Yes
• Efficiency: 90%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Electrical Specifications
Absolute Maximum Ratings
Maximum pin voltage, all pins except below 6.5V
VIN
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
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
NOTES:
PARAMETER
1. θ
2. For θ
FB
V
I
LIMBOOST
I
R
BATFAULT
R
R
LIMBUCK
,
V
Tech Brief TB379.
V
V
UV FAULT
SWITCH
OVPH
OVPL
SWS1, SWS2, EN/PWM . . . . . . . . . . . . . . . . . . . . . . . . . . .18V
V
I
OUTOL
I
OUTCL
JA
I
LEVEL
V
S
V
VIN
VIN
S
OUT
GATE
GATE
BAT
D
DC
E
FB
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
IS
N
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
Input Supply Voltage
Input Supply Voltage
Input Supply Monitor
Supply Fault Threshold
Supply Current in V
Supply Current in V
Power FET On-Resistance
Regulated Auxiliary Supply
Auxiliary Supply Open Loop Output
Resistance
Auxiliary Supply Closed Loop Output
Resistance
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
Feedback Undervoltage Fault
DESCRIPTION
2
V
BAT
IN
IN
(T
A
= V
= +25°C)
IN
= 12V, V
DC
I
I
TMAX disabled
Normal operating range
If V
ground
No switching, EN/PWM = 1
No switching, EN/PWM = 0
I
V
V
4 LED output string. V
BUCK/BOOSTN = GND
BUCK/BOOSTN = VDC
Upper threshold to enter overvoltage fault mode,
T
Lower threshold to exit overvoltage fault mode,
T
V
V
System in regulation, V
V
Mode = 1, analog control of LED current
V
J
OUT
OUT
SWITCH
A
A
= T
IN
IN
IN
FAULT
IN
LEVEL
= 5V, T
= +25°C
= +25°C
BAT
< V
> 6V, F < 100Hz
- V
= 12V, 6 LEDs
C
= 350mA, 8 LEDs, BUCK/BOOSTN = GND
= 350mA, 5 LEDs, BUCK/BOOSTN = GND,
= T
FAULT
DC
> V
ISL78100
- V
A
= 1V, EN/PWM = 3V
A
= 600mA
= -40°C to +105°C unless otherwise specified.
IN
BATFAULT
CONDITIONS
Thermal Information
Thermal Resistance
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +135°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
, FAULT pin is switched to
IN
20 Ld QFN Package (Notes 1, 2). . . . .
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
LEVEL
= V
BAT
= 1V,
= 10V
17.6
4.75
9.76
8.16
0.18
0.25
MIN
100
2.7
2.7
31
5
θ
TYP
0.15
12.2
10.2
JA
160
2.7
0.6
3.6
2.4
0.2
21
32
20
5
1
(°C/W) / θ
39
14.64
12.24
MAX
December 17, 2007
0.25
5.25
0.22
200
3.5
2.5
6.5
16
16
12
24
40
23
3
JC
FN6626.0
2.5
(°C/W)
UNIT
mA
mV
µA
Ω
Ω
Ω
V
V
V
V
V
A
A
A
V
V
V
V
V
V