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ISL97671
Absolute Maximum Ratings
(T A = +25 ° C)
Thermal Information
VIN, EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 28V
FAULT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VIN-8.5V to VIN+0.3V
VDC, COMP, RSET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 5.5V
SMBCLK/SCL * , SMBDAT/SDA * , FPWM, PWM . . . . . . . . . . . . -0.3V to 5.5V
EN, OVP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 5.5V
CH0 - CH5, LX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 45V
PGND, AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V
Above voltage ratings are all with respect to AGND pin
ESD Rating
Thermal Resistance (Typical) θ JA (°C/W) θ JC (°C/W)
20 Ld QFN Package (Notes 4, 5, 7) . . . . . . 40 2.5
Thermal Characterization (Typical) PSI JT (°C/W)
20 Ld QFN Package (Note 6) . . . . . . . . . . . . . . . . . . . . . 1
Maximum Continuous Junction Temperature . . . . . . . . . . . . . . . . .+125°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Human Body Model (Tested per JESD22-A114E) . . . . . . . . . . . . . . . . 3kV
Machine Model (Tested per JESD22-A115-A) . . . . . . . . . . . . . . . . . 300V
Charged Device Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1kV
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
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
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. 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
5. For θ JC , the “case temp” location is the center of the exposed metal pad on the package underside.
6. PSI JT 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 θ JC and θ 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 T A = 25°C; V IN = 12V, EN = 5V, R SET = 20.52k Ω , unless otherwise noted.
Boldface limits apply over the operating temperature range, -40°C to +85°C.
MIN
MAX
PARAMETER
DESCRIPTION
CONDITION
(Note 8)
TYP
(Note 8) UNIT
GENERAL
V IN (Note 9)
I VIN_STBY
V OUT
Backlight Supply Voltage
VIN Shutdown Current
Output Voltage
≤ 13 LEDs per channel (3.2V/20mA type)
4.5V < V IN ≤ 26V,
F SW = 600kHz
4.5
26.5
10
45
V
μA
V
8.55V < V IN ≤ 26V,
F SW = 1.2MHz
4.5V < V IN ≤ 8.55V, F SW = 1.2MHz
45
V IN /0.19
V
V
V UVLO
V UVLO_HYS
Undervoltage Lockout Threshold
Undervoltage Lockout Hysteresis
2.6
275
3.3
V
mV
REGULATOR
V DC
LDO Output Voltage
V IN ≥ 6V
4.55
4.8
5
V
I VDC_STBY
I VDC
Standby Current
Active Current
EN = 0V
EN = 5V
5
5
μA
mA
V LDO
VDC LDO Droop Voltage
V IN > 5.5V, 20mA
20
200
mV
ENLow
ENHi
t ENLow
Guaranteed Range for EN Input Low Voltage
Guaranteed Range for EN Input High Voltage
EN Low Time Before Shut-down
1.8
30.5
0.5
V
V
ms
5
FN7631.3
August 14, 2012
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