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LT1186FCS Arkusz danych(PDF) 4 Page - Linear Technology

Numer części LT1186FCS
Szczegółowy opis  DAC Programmable CCFL Switching Regulator(Bits-to-NitsTM)
PDF  16 Pages
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Producent  LINER [Linear Technology]
Strona internetowa  http://www.linear.com
Logo LINER - Linear Technology

LT1186FCS Arkusz danych(HTML) 4 Page - Linear Technology

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LT1186F
ELECTRICAL CHARACTERISTICS
TA = 25°C, VCC = SHUTDOWN = DIN = CS = 3.3V, BAT = Royer = BULB = 12V, ICCFL = CCFL VSW = Open, DOUT = Three-State, DIO = IOUT
= CLK = GND, CCFL VC = 0.5V, unless otherwise specified.
The q denotes specifications which apply over the specified operating
temperature range.
Note 1: TJ is calculated from the ambient temperature TA and power
dissipation PD according to the following formula:
LT1186FCS: TJ = TA + (PD)(100°C/W)
Note 2: Does not include switch leakage.
Note 3: For duty cycles (DC) between 50% and 80%, minimum
guaranteed switch current is given by ILIM = 1.4(1.393 – DC) for the
LT1186F due to internal slope compensation circuitry.
Note 4: Timings for all input signals are measured at 0.8V for a High-to-
Low transition and 2.0V for a Low-to-High transition.
Note 5: Timings are guaranteed but not tested.
TEMPERATURE (
°C)
–75
6
8
10
9
7
5
3
1
125
LT1186F • G01
4
2
0
–25
– 50
0
50
100
150
25
75
175
Supply Current
vs Temperature
TEMPERATURE (
°C)
0
2
4
6
5
3
1
–25
25
75
125
LT1186F • G03
175
–50
–75
0
50
100
150
VCC = 5V
VCC = 3V
TEMPERATURE (
°C)
–75
60
8O
100
90
70
50
30
10
125
LT1186F • G02
40
20
0
–25
– 50
0
50
100
150
25
75
175
VCC = 5V
VCC = 3V
Shutdown Current
vs Temperature
Shutdown Input Bias Current
vs Temperature
TYPICAL PERFORMANCE CHARACTERISTICS
Shutdown Threshold Voltage
vs Temperature
TEMPERATURE (
°C)
0.6
0.8
1.0
1.2
1.1
0.9
0.7
–25
25
75
125
LT1186F • G04
175
–50
–75
0
50
100
150
TEMPERATURE (
°C)
–75
220
240
125
LT1186F • G05
200
180
160
–25
25
75
175
210
230
190
170
100
–50
0
50
150
Frequency vs Temperature
TEMPERATURE (
°C)
–75
87
91
95
93
89
85
81
77
125 150
LT1186F • G06
83
79
75
–25 0
–50
25 50
75 100
175
Maximum Duty Cycle
vs Temperature
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
SERIAL INTERFACE (Notes 4, 5)
tCSLO
CS Low Time
fCLK = 2MHz
q
4550
ns
tCSHI
CS High Time
q
400
ns



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