MAX16806 데이터 시트보기 (PDF) - Maxim Integrated
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MAX16806
Maxim Integrated
MAX16806 Datasheet PDF : 18 Pages
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MAX16805/MAX16806
EEPROM-Programmable, High-Voltage,
350mA LED Drivers with LED Current Foldback
Electrical Characteristics (continued)
(VIN = VEN = 12V, CV5 = 0.1μF, IV5 = 0, CS- = GND, RSENSE = 0.56Ω, VDIM = 4V, DGND = GND, TFP/SCL = 5V, TFN/SDA = 0V,
SW = CFD = Open, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
Maximum Thermal Foldback
Clamp Current Reduction Range
Default Thermal Foldback Clamp
Current Reduction Range
THERMAL PROTECTION
TFC(MAX)
TFDEF
+25°C ≤ TA ≤ +125°C
Thermal Foldback Clamp register at
factory default (0x07),
+25°C ≤ TA ≤ +125°C
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
TJ(SHDN)
LED CURRENT FOLDBACK
Minimum Input LED Current
Foldback Range
Maximum Input LED Current
Foldback Range
LED Current Foldback Default
Level
VCFD(MIN)
VCFD(MAX)
VCFD
LED Current Foldback Threshold register
at factory default (0x00)
LED Current Foldback Voltage
Step Size
INTERNAL RAMP GENERATOR
VIN > 11V, CFD register bit 3 = 0
VIN > 11V, CFD register bit 3 = 1
Internal RAMP Frequency
External Sync Frequency Range
External Sync Voltage Low
fRAMP
fDIM
External Sync Voltage High
Output Current Duty Cycle
Minimum Ramp Peak
Programming Range
Maximum Ramp Peak
Programming Range
Ramp Peak Default Voltage
VDIM = 0V
IDC
VDIM > (VRAMP + 0.4V) (MAX16806),
VDIM > +3.3V (MAX16805)
VRAMP(MIN)
VRAMP(MAX)
Ramp Peak register at factory default
(0x07)
Ramp Offset Voltage
MOMENTARY SWITCH INTERFACE (SW) (MAX16806)
SW Pullup Current
SW Input-Voltage High
SW Input-Voltage Low
Minimum Pulse Width
ISW
VSW = 0V
VIH
ISW = 100µA
VIL
Minimum Debounce Time
MIN TYP MAX UNITS
100
%
40
%
+155
°C
+23
°C
11.4
16.4
16.4
0.71
0.355
V
V
V
V/step
176
200
224
Hz
80
2000
Hz
0.4
V
2.8
V
0
%
100
1.49 1.55 1.60
V
2.77 2.88 3.00
V
2.88
V
210
mV
1
3
mA
4
V
0.4
V
120
ms
40
ms
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