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参数资料
型号： LTC4266AIUHF-3#TRPBF
厂商： LINEAR TECHNOLOGY CORP
元件分类： 电源管理
英文描述： POWER SUPPLY MANAGEMENT CKT, PQCC38
封装： 7 X 5 MM, LEAD FREE, PLASTIC, MO-220WHKD, QFN-38
文件页数： 23/28页
文件大小： 325K
代理商： LTC4266AIUHF-3#TRPBF
LTC4266A/LTC4266C
4
4266acf
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Current Sense
VCUT
Overcurrent Sense Voltage
VSENSEn – VEE
hpen = 0Fh, cutn[5:0] ≥ 4 (Note 12)
cutrng = 0
cutrng = 1
l
9
4.5
9.38
4.69
9.75
4.88
mV/LSB
Overcurrent Sense in AUTO Pin Mode
Class 0, Class 3
Class 1
Class 2
Class 4
l
90
26
49
152
94
28
52
159
98
30
55
166
mV
VLIM
Active Current Limit in 802.3af Compliant
Mode
VSENSEn – VEE, hpen = 0Fh, limn = 80h,
VEE = 55V (Note 12)
VEE < VOUT < AGND – 29V
AGND – VOUT = 0V
l
102
20
106
110
50
mV
VLIM
Active Current Limit in High Power Mode
hpen = 0Fh, limn = C0h, VEE = 55V
VOUT – VEE = 0V to 10V
VEE + 23V < VOUT < AGND – 29V
AGND – VOUT = 0V
l
204
100
20
212
106
221
113
50
mV
VLIM
Active Current Limit in AUTO Pin Mode
VOUT – VEE = 0V to 10V, VEE = 55V
Class 0 to Class 3
Class 4
l
102
204
106
212
110
221
mV
VMIN
DC Disconnect Sense Voltage
VSENSEn – VEE, rdis = 0
VSENSEn – VEE, rdis = 1
l
2.6
1.3
3.8
1.9
4.8
2.41
mV
VSC
Short-Circuit Sense
VSENSEn – VEE – VLIM, rdis = 0
VSENSEn – VEE – VLIM, rdis = 1
l
160
75
200
100
255
135
mV
Port Current ReadBack
Resolution
No Missing Codes, fast_iv = 0
14
Bits
LSB Weight
VSENSEn – VEE
30.5
V/LSB
50Hz to 60Hz Noise Rejection
(Note 7)
30
dB
Port Voltage ReadBack
Resolution
No Missing Codes, fast_iv = 0
14
bits
LSB Weight
AGND – VOUTn
5.835
mV/LSB
50Hz to 60Hz Noise Rejection
(Note 7)
30
dB
Digital Interface
VILD
Digital Input Low Voltage
(Note 6)
l
0.8
V
VIHD
Digital Input High Voltage
(Note 6)
l
2.2
V
Digital Output Low Voltage
ISDAOUT = 3mA, IINT = 3mA
ISDAOUT = 5mA, IINT = 5mA
l
0.4
0.7
V
Internal Pull-Up to VDD
ADn, SHDNn, RESET, MSD
50
kΩ
Internal Pull-Down to DGND
AUTO, MID
50
kΩ
electricAl chArActeristics The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. AGND – VEE = 54V, AGND = DGND, and VDD – DGND = 3.3V
unless otherwise noted. (Notes 3, 4)
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