ISL97801ARZ Intersil, ISL97801ARZ Datasheet - Page 2

• Manufacturer Part Number: ISL97801ARZ
• Description: IC LED DRIVER AUTOMOTIVE 20-QFN
• Manufacturer: Intersil
• Type: Automotiver

Specifications of ISL97801ARZ

• Topology: PWM, Step-Down (Buck), Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Automotive, Backlight
• Frequency: 850kHz ~ 1.15MHz
• 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
V
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: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
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
Operating continuously at a junction temperature of +135°C will shorten the life of the device while the thermal shutdown may trigger at a higher temperature than
+135°C since it is a typical number.
NOTE:
1. θ
2. For θ
PARAMETER
IN,
V
I
LIMBOOST
R
I
BATFAULT
R
R
LIMBUCK
Tech Brief TB379.
SWS1, SWS2, EN/PWM . . . . . . . . . . . . . . . . . . . . . . . . . . .18V
V
V
SWITCH
OVPH
JA
OVPL
I
V
OUTOL
OUTCL
I
I
V
S
V
VIN
VIN
GATE
GATE
S
OUT
BAT
D
DC
FB
E
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
IS
JC
N
, 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
Over Voltage Positive Going Voltage
Mode Threshold
Over Voltage Negative Going Voltage
Mode Threshold
Protection FET VGS (gate clamp)
Protection FET VGS (gate clamp)
Feedback Voltage
DESCRIPTION
2
V
BAT
IN
IN
(T
A
= V
= +25°C)
IN
= 12V, V
DC
J
= T
= 5V, T
I
GND
I
GND, TMAX disabled
Normal operating range
If V
switched to ground
No switching, EN/PWM = 1
No switching, EN/PWM = 0
I
V
V
4 LED output string. V
Upper threshold to enter overvoltage fault
mode, T
Lower threshold to exit overvoltage fault
mode, T
V
V
VIN = 12V, 6 LEDs
BUCK/BOOSTN = GND
BUCK/BOOSTN = VDC
System in regulation, V
OUT
OUT
SWITCH
IN
IN
IN
FAULT
C
BAT
= T
< V
> 6V, F < 100Hz
- V
ISL97801
= 350mA, 8 LEDs, BUCK/BOOSTN =
= 350mA, 5 LEDs, BUCK/BOOSTN =
A
A
FAULT
DC
> V
= -40°C to +105°C unless otherwise specified.
A
A
- V
= 600mA
= +25°C
= +25°C
IN
BATFAULT
CONDITIONS
Thermal Information
Thermal Resistance
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +135°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
QFN-20 Package (Notes 1, 2) . . . . . . .
, FAULT pin is
IN
LEVEL
= V
BAT
= 1V,
= 10V
17.6
4.75
9.76
8.16
0.19
MIN
2.7
2.7
31
5
TYP
0.15
12.2
10.2
2.7
0.6
3.6
2.4
0.2
21
32
20
5
1
θ
JA
(°C/W) / θ
39
14.64
12.24
MAX
0.25
5.25
0.21
3.5
2.5
6.5
16
12
16
24
40
23
JC
April 2, 2007
FN6428.1
2.5
UNIT
(°C/W)
mA
µA
Ω
Ω
Ω
V
V
V
V
V
A
A
A
V
V
V
V
V