ISL97676 查看數據表（PDF） - Renesas Electronics
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ISL97676 Datasheet PDF : 19 Pages
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ISL97676
Absolute Maximum Ratings (TA = +25°C)
VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 28V
FAULT, EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to min(28, VIN + 0.3)V
FSW/PhaseShift, RFPWM/DirectPWM, OVP . . . . . . . . . . . . . -0.3V to 5.5V
VDDIO, PWM, COMP. . . . . . . . . . . . . . . . . . . . . -0.3V to min(5.5, VIN + 0.3)V
ISET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to min(VDDIO + 0.3, 5.5)V
FB1, FB2, FB3, FB4, FB5, FB6 . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 45V
SW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 46V
PGND, AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V
Above voltage ratings are all with respect to AGND pin
ESD Rating
Human Body Model (Tested per JESD22-A114E) . . . . . . . . . . . . . . . . 3kV
Machine Model (Tested per JESD22-A115-A) . . . . . . . . . . . . . . . . . 300V
Charged Device Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1kV
Thermal Information
Thermal Resistance (Typical)
JA (°C/W) JC (°C/W)
20 Ld QFN Package (Notes 4, 5, 7) . . . . . .
39
2.5
Thermal Characterization (Typical)
PSIJT (°C/W)
20 Ld QFN Package (Note 6) . . . . . . . . . . . . . . . . . . . . .
3
Maximum Continuous Junction Temperature . . . . . . . . . . . . . . . . .+125°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°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.
NOTES:
4. JA is measured in free air with the component mounted on a high-effective thermal conductivity test board with “direct attach” features. See TB379.
5. For JC, the “case temp” location is the center of the exposed metal pad on the package underside.
6. PSIJT is the PSI junction-to-top thermal characterization parameter. If the package top temperature can be measured with this rating then the die
junction temperature can be estimated more accurately than the JC and JC thermal resistance ratings.
7. Refer to JESD51-7 high effective thermal conductivity board layout for proper via and plane designs.
Electrical Specifications All specifications below are tested at TA = +25°C; VIN = 12V, EN = 3.3V, RISET = 19.6k, unless otherwise noted.
Boldface limits apply over the operating temperature range, -40°C to +85°C.
SYMBOL
PARAMETER
CONDITION
MIN
(Note 8) TYP
MAX
(Note 8) UNIT
GENERAL
VIN (Note 9)
IVIN_STBY
VOUT
Backlight Supply Voltage
VIN Shutdown Current
Output Voltage
VUVLO
VUVLO_HYS
REGULATOR
Undervoltage Lockout Threshold
Undervoltage Lockout Hysteresis
EN = 0V
4.5V < VIN 26V, FSW = 600kHz
6.75V < VIN 26V, FSW = 1.2MHz
4.5V < VIN 6.75V, FSW = 1.2MHz
4.5
26
V
10 A
45
V
45
V
VIN/0.15 V
2.6
3.1
3.3
V
320
mV
VDDIO
IVDDIO_STBY
IVIN
VLDO
ENLow
ENHi
tENLow
BOOST
LDO Output Voltage
Standby Current
Driver Input Current
VDDIO LDO Dropout Voltage
Guaranteed Range for EN Input Low Voltage
Guaranteed Range for EN Input High Voltage
EN Low Time before Shut-Down
VIN > 5.5V
EN = 0V
100% Dimming
VIN >5.5V, IVDDIO = 20mA
4.6
4.8
5
V
10 µA
9
mA
30
200 mV
0.5
V
1.8
V
29.5
ms
SWILimit
Boost FET Current Limit
1.5
2.2
2.7
A
rDS(ON)
SS
Internal Boost Switch ON-Resistance
Soft-Start
TA = +25°C
100% LED Duty Cycle
230
300 m
14
ms
Eff_peak
Peak Efficiency
VIN = 12V, 72 LEDs, 20mA each, L = 10µH
92
%
with DCR 101mTA = +25°C
FN7600 Rev.2.00
Sep 12, 2017
Page 5 of 19
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