參數(shù)資料
型號： ISL97801ARZ-TK
廠商： INTERSIL CORP
元件分類： 顯示驅(qū)動器
英文描述： High Power LED Driver
中文描述： LED DISPLAY DRIVER, PQCC20
封裝： 4 X 4 MM, ROHS COMPLIANT, PLASTIC, QFN-20
文件頁數(shù)： 2/19頁
文件大?。?/td> 707K
代理商： ISL97801ARZ-TK
2
FN6428.1
April 2, 2007
Absolute Maximum Ratings
(T
A
= +25°C)
Maximum pin voltage, all pins except below 6.5V
V
IN,
SWS1, SWS2, EN/PWM . . . . . . . . . . . . . . . . . . . . . . . . . . .18V
VBAT, FAULT, FB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24V
|VHI - SWS1, SWS2| . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5V
SWD1, SWD2, OVP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34V
Continuous Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1A
Thermal Information
Operating Conditions
Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C
Thermal Resistance
QFN-20 Package (Notes 1, 2) . . . . . . .
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . .+135°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
θ
JA
(°C/W) /
θ
JC
(°C/W)
39
2.5
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
J
= T
C
= T
A
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
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
θ
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
TYP
MAX
UNIT
VIN
Input Supply Voltage
I
OUT
= 350mA, 8 LEDs, BUCK/BOOSTN =
GND
5
16
V
VIN
Input Supply Voltage
I
OUT
= 350mA, 5 LEDs, BUCK/BOOSTN =
GND, TMAX disabled
2.7
12
V
V
BAT
Input Supply Monitor
Normal operating range
2.7
16
V
V
BATFAULT
Supply Fault Threshold
If V
BAT
> V
BATFAULT
, FAULT pin is
switched to ground
17.6
21
24
V
I
S
E
N
Supply Current in V
IN
No switching, EN/PWM = 1
2.7
3.5
mA
I
S
D
IS
Supply Current in V
IN
No switching, EN/PWM = 0
0.6
2.5
μA
R
SWITCH
Power FET On Resistance
I
SWITCH
= 600mA
0.15
0.25
Ω
V
DC
Regulated Auxiliary Supply
4.75
5
5.25
V
R
OUTOL
Auxiliary Supply Open Loop Output
Resistance
V
IN
< V
DC
40
Ω
R
OUTCL
Auxiliary Supply Closed Loop Output
Resistance
V
IN
> 6V, F < 100Hz
6.5
Ω
I
OUT
Output Drive Current
4 LED output string. V
IN
= V
BAT
= 10V
1
A
I
LIMBOOST
Power Switch Current Limit
BUCK/BOOSTN = GND
3.6
A
I
LIMBUCK
Power Switch Current Limit
BUCK/BOOSTN = VDC
2.4
A
OVPH
Over Voltage Positive Going Voltage
Mode Threshold
Upper threshold to enter overvoltage fault
mode, T
A
= +25°C
31
32
V
OVPL
Over Voltage Negative Going Voltage
Mode Threshold
Lower threshold to exit overvoltage fault
mode, T
A
= +25°C
20
23
V
V
GATE
Protection FET VGS (gate clamp)
V
IN
-
V
FAULT
9.76
12.2
14.64
V
V
GATE
Protection FET VGS (gate clamp)
V
FAULT
-
V
IN
8.16
10.2
12.24
V
V
FB
Feedback Voltage
System in regulation, V
LEVEL
= 1V,
VIN = 12V, 6 LEDs
0.19
0.2
0.21
V
ISL97801
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