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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： 24/28页
文件大小： 325K
代理商： LTC4266AIUHF-3#TRPBF
LTC4266A/LTC4266C
5
4266acf
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Timing Characteristics
tDET
Detection Time
Beginning to End of Detection (Note 7)
l
270
290
310
ms
tDETDLY
Detection Delay
From PD Connected to Port to Detection
Complete (Note 7)
l
300
470
ms
tCLE
Class Event Duration
(Note 7)
l
12
ms
tCLEON
Class Event Turn-On Duration
CPORT = 0.6F (Note 7)
l
0.1
ms
tME
Mark Event Duration
(Notes 7, 11)
l
8.6
ms
tMEL
Last Mark Event Duration
(Notes 7, 11)
l
16
22
ms
tPON
Power On Delay in AUTO Pin Mode
From End of Valid Detect to Application of
Power to Port (Note 7)
l
60
ms
Turn On Rise Time
(AGND – VOUT): 10% to 90% of (AGND – VEE),
CPORT = 0.15F (Note 7)
l
15
24
s
Turn On Ramp Rate
CPORT = 0.15F (Note 7)
l
10
V/s
Fault Delay
From ICUT Fault to Next Detect
l
1.0
1.1
s
Midspan Mode Detection Backoff
Rport = 15.5k (Note 7)
l
2.3
2.5
2.7
s
Power Removal Detection Delay
From Power Removal After tDIS to Next
Detect (Note 7)
l
1.0
1.3
2.5
s
tSTART
Maximum Current Limit Duration During Port
Start-Up
(Note 7)
l
52
62.5
66
ms
tLIM
Maximum Current Limit Duration After Port
Start-Up
tLIM Enable = 1 (Notes 7, 12)
l
11.9
ms
tCUT
Maximum Overcurrent Duration After Port
Start-Up
(Note 7)
l
52
62.5
66
ms
Maximum Overcurrent Duty Cycle
(Note 7)
l
5.8
6.3
6.7
%
tMPS
Maintain Power Signature (MPS) Pulse Width
Sensitivity
Current Pulse Width to Reset Disconnect
Timer (Notes 7, 8)
l
1.6
3.6
ms
tDIS
Maintain Power Signature (MPS) Dropout Time (Note 7)
l
320
350
380
ms
tMSD
Masked Shut Down Delay
(Note 7)
l
6.5
s
tSHDN
Port Shut Down Delay
(Note 7)
l
6.5
s
I2C Watchdog Timer Duration
l
1.5
2
3
s
Minimum Pulse Width for Masked Shut Down (Note 7)
l
3
s
Minimum Pulse Width for SHDN
(Note 7)
l
3
s
Minimum Pulse Width for RESET
(Note 7)
l
4.5
s
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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