ISL97671A Просмотр технического описания (PDF) - Intersil
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ISL97671A Datasheet PDF : 28 Pages
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ISL97671A
Absolute Maximum Ratings (TA = +25°C)
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
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)
θJA (°C/W) θJC (°C/W)
20 Ld QFN Package (Notes 4, 5, 7) . . . . . .
40
2.5
Thermal Characterization (Typical)
PSIJT (°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
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: TJ = TC = TA
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. θJA 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.
5. For θJC, 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 θJC and θJC thermal resistance ratings.
7. Refer to JESD51-7 high effective thermal conductivity board layout for proper via and plane designs.
Electrical Specifications VIN = 12V, EN = 5V, RSET = 20.1kΩ, unless otherwise noted. Boldface limits apply over the operating
temperature range, -40°C to +85°C.
PARAMETER
DESCRIPTION
CONDITION
MIN
MAX
(Note 8) TYP (Note 8) UNIT
GENERAL
VIN (Note 9)
Backlight Supply Voltage
≤13 LEDs per channel (3.2V/20mA
4.5
type)
26.5
V
IVIN_STBY
IVIN
VOUT
VIN Shutdown Current
VIN Active Current
Output Voltage
VUVLO
VUVLO_HYS
REGULATOR
Undervoltage Lockout Threshold
Undervoltage Lockout Hysteresis
TA = +25°C
EN = 5V
4.5V < VIN ≤ 26V,
FSW = 600kHz
8.55V < VIN ≤ 26V,
FSW = 1.2MHz
4.5V < VIN ≤ 8.55V, FSW = 1.2MHz
5
µA
5
mA
45
V
45
V
VIN/0.19
V
2.1
2.6
V
200
mV
VDC
IVDC_STBY
VLDO
ENLOW
ENHI
tENLow
BOOST
LDO Output Voltage
Standby Current
VIN ≥ 6V
EN = 0V
VDC LDO Droop Voltage
Guaranteed Range for EN Input Low Voltage
VIN > 5.5V, 20mA
Guaranteed Range for EN Input High Voltage
EN Low Time Before Shut-down
4.55
4.8
5
V
5
µA
20
200
mV
0.5
V
1.8
V
30.5
ms
SWILimit
Boost FET Current Limit
1.5
2.0
2.7
A
5
FN7709.1
March 24, 2011
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