參數(shù)資料
型號: LTC4274CIUHF#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 電源管理
英文描述: POWER SUPPLY MANAGEMENT CKT, PQCC38
封裝: 7 X 5 MM, LEAD FREE, PLASTIC, MO-220WHKD, QFN-38
文件頁數(shù): 27/28頁
文件大?。?/td> 313K
代理商: LTC4274CIUHF#PBF
LTC4274A/LTC4274C
8
4274acf
typicAl perForMAnce chArActeristics
802.3af ILIM Threshold
vs Temperature
DC Disconnect Threshold
vs Temperature
Current Limit Foldback
ADC Noise Histogram
Current Readback in Fast Mode
ADC Integral Nonlinearity
Current Readback in Fast Mode
802.3at ICUT Threshold
vs Temperature
802.3af ICUT Threshold
vs Temperature
TEMPERATURE (°C)
–40
105.00
V LIM
(mV)
ILIM
(mA)
106.50
105.75
107.25
108.00
420
423
426
429
432
0
40
4274AC G10
80
120
VDD = 3.3V
VEE = –54V
RSENSE = 0.25
REG 48h = 80h
TEMPERATURE (°C)
–40
158
V CUT
(mV)
ICUT
(mA)
161
160
159
162
163
630
636
640
648
644
652
0
40
4274AC G11
80
120
VDD = 3.3V
VEE = –54V
RSENSE = 0.25
REG 47h = E2h
TEMPERATURE (°C)
–40
93.00
V CUT
(mV)
ICUT
(mA)
94.50
93.75
95.25
96.00
372
375
378
381
384
0
40
4274AC G12
80
120
VDD = 3.3V
VEE = –54V
RSENSE = 0.25
REG 47h = D4h
TEMPERATURE (°C)
–40
V MIN
(mV)
IMIN
(mV)
7.00
7.50
7.25
7.75
8.00
1.7500
1.8125
1.8750
1.9375
2.0000
0
40
4274AC G13
80
120
VDD = 3.3V
VEE = –54V
RSENSE = 0.25
REG 47h = E2h
VOUTn (V)
–54
0
I LIM
(mA)
VLIM
(mV)
900
800
700
600
500
400
300
200
100
0
225
200
175
150
125
100
75
50
25
–36
–45
–27
4274AC G14
–18
–9
0
VDD = 3.3V
VEE = –54V
RSENSE = 0.25
REG 48h = C0h
ADC OUTPUT
191
0
B IN
COUNT
400
350
300
250
200
150
100
50
193
192
194
4274AC G15
195
196
VSENSE – VEE = 110.4mV
CURRENT SENSE RESISTOR INPUT VOLTAGE (mV)
0
ADC
INTEGRAL
NONLINEARIT
Y(LSBs)
0
0.5
400
4274AC G16
–0.5
–1.0
100
200 250
500
1.0
300
50
150
450
350
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