ISL97678IRZ 데이터 시트보기 (PDF) - Renesas Electronics
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ISL97678IRZ Datasheet PDF : 17 Pages
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ISL97678
Absolute Maximum Ratings
Voltage ratings are all with respect to AGND pin
VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 27V
EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 27V
VLOGIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 2.75V
VDC, PWM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 5.75V
COMP, RSET, FPWM, FSW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to min
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(VDC + 0.3V, 5.75V)
CH1 - CH8, LX, OVP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 45V
PGND, AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V
Recommended Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Thermal Information
Thermal Resistance (Typical)
JA (°C/W)
JC (°C/W)
32 Ld QFN (Notes 4, 5). . . . . . . . . . . . . . . . . 31
3
Thermal Characterization (Typical, Note 6)
PSIJT (°C/W)
32 Ld QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.2
Maximum Continuous Junction Temperature . . . . . . . . . . . . . . . . .+125°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Power Dissipation
TA < +25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2W
TA < +70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8W
TA < +85°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3W
TA < +100°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8W
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493
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 with the component mounted on a high-effective thermal conductivity test board in free air. See TB379 for details.
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 JA and JC thermal resistance ratings.
5.
Electrical Specifications All specifications below are characterized at TA = -40°C to +85°C; VIN = 12V, EN = 5V, RSET = 36kΩ, unless
otherwise noted. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER
DESCRIPTION
TEST CONDITIONS
MIN
MAX
(Note 7)
TYP
(Note 7) UNITS
GENERAL
VIN
Backlight Supply Voltage
4.75
26
V
(Note 8)
IVIN_SHDN
VIN Shutdown Current
VOUT
Output Voltage
VUVLO
Undervoltage Lockout Threshold
VUVLO_HYS
Undervoltage Lockout Hysteresis
LINEAR REGULATOR
EN = 0
5
µA
45
V
2.9
3.3
V
300
mV
VDC
5V Analog Bias Regulator
VDC_DROP
VDC LDO Dropout Voltage
IVDC
Active Current
VLOGIC
2.5V Logic Bias Regulator
VLOGIC_DROP
VLOGIC LDO Dropout Voltage
BOOST SWITCHING REGULATOR
VIN > 6V
IVDC = 30mA
EN = 5V, R = 33kΩ
VIN > 6V
IVLOGIC = 30mA
4.8
5
5.1
V
71
100
mV
10
mA
2.3
2.4
2.5
V
31
100
mV
SS
Soft-Start
16
ms
SWILimit
rDS(ON)
VFSW
Boost FET Current Limit
Internal Boost Switch ON-Resistance
fSW Voltage
TA = +25°C to +85°C
RFSW = 33kΩ
3.0
1.18
130
1.21
4.7
A
mΩ
1.24
V
FN6998 Rev.3.00
Sep 8, 2017
Page 5 of 17
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