ISL97686 查看數據表（PDF） - Renesas Electronics
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ISL97686
Renesas Electronics
ISL97686 Datasheet PDF : 22 Pages
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ISL97686
Electrical Specifications All specifications below are characterized at TA = -40°C to +105°C; VIN = 12V, EN = 5V. Boldface limits apply
over the operating temperature range, -40°C to +105°C. (Continued)
PARAMETER
DESCRIPTION
CONDITION
MIN
MAX
(Note 10) TYP (Note 10) UNIT
DMAX
DMIN
fSW
Boost Maximum Duty Cycle
Boost Minimum Duty Cycle
Boost Switching Frequency
EFFPEAK
REFERENCE
Boost Peak Efficiency
fSW = 600kHz
fSW = 1.2MHz
ROSC = 250kΩ
ROSC = 83kΩ
ROSC = 42kΩ
92
%
26
%
180
200
220 kHz
540
600
660 kHz
1.08
1.2
1.32 MHz
90
%
IMATCH
Channel-to-Channel Current Matching
IACC
Absolute Current
FAULT DETECTION
Channels are in a single IC,
-2
±1
2
%
ILED: 100mA
RISET1/2 = 28.7kΩ
-3
3
%
VSC
Channel Short Circuit Threshold
VTEMP
Over-Temperature Threshold
VTEMP_ACC
Over-Temperature Threshold Accuracy
VOVP_OUT
Overvoltage Limit on OVP Pin
VOVP_IN
Overvoltage Limit on VIN Pin
DIGITAL I/O LOGIC LEVEL SPECIFICATIONS
7.2
1.18
8
150
5
1.22
35
8.8
V
°C
°C
1.24
V
V
VIL
Logic Input Low Voltage - EN_VSYNC, EN, CLK, SDA, SDO,
CSEL, CS
0.8
V
VIH
Logic Input High Voltage - EN_VSYNC, EN, CLK, SDA, SDO,
CSEL, CS
1.5
5.5
V
fCS
Chip select frequency
fCLK
Serial Clock Frequency
tSETUP
Setup Time
tHOLD
Hold Time
CURRENT SOURCES
30
480 Hz
10
580 kHz
40
ns
40
ns
VHEADROOM
Dominant Channel Current Source Headroom at CH Pin ILED = 160mA
TA = +25°C
VHEADROOM_RANGE Dominant Channel Current Sink Headroom Range at CHx ILED = 160mA
Pin
TA = +25°C
VISET1,2
Voltage at ISET1 and 2 Pins
ILED_MAX
Maximum LED Current per Channel
PWM GENERATOR
0.75
V
(Note 12)
90
mV
1.18
160
1.21
1.24
V
mA
fPWM
Generated PWM Frequency
RPWM_SET = 333kΩ
45
50
55
Hz
RPWM_SET = 3.3kΩ
4.5
5
5.5 kHz
Dimming Range PWM Dimming Duty Cycle Limits
fPWM ≤ 20kHz
0.1
100
%
VPWM_SET
PWM_SET Voltage
RPWM_SET = 3.3kΩ
1.18
1.21
1.25
V
NOTES:
10. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
11. At maximum VIN of 32V, minimum VOUT is 35V. Minimum VOUT can be lower at lower VIN.
12. Varies within range specified by VHEADROOM_RANGE.
FN7953 Rev.1.00
Sep 19, 2017
Page 6 of 22
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