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LM25066I bảng dữ liệu(PDF) 5 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  Intel Node Manager Compliant System Power Management and Protection IC
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LM25066I, LM25066IA
www.ti.com
SNVS824C – JUNE 2012 – REVISED MARCH 2013
Electrical Characteristics (continued)
Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the junction temperature (TJ) range of -40°C
to +85°C unless otherwise stated. Minimum and Maximum limits are specified through test, design, or statistical correlation.
Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless
otherwise stated the following conditions apply: VIN = 12V. See
(1) and
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
FB Pin
FBTH
FB Threshold
VFB rising
1.141
1.167
1.19
V
FBHYS
FB Hysteresis Current
-31
-24
-18
µA
FBLEAK
Off Leakage Current
VFB = 1V
1
µA
Power Limit (PWR Pin)
PWRLIM
Power limit sense voltage (VIN-SENSE)
SENSE-OUT = 12V, RPWR = 25 kΩ
9
12.5
15
mV
IPWR
PWR pin current
VPWR = 2.5V
-10
µA
RSAT(PWR)
PWR pin impedance when disabled
UVLO = 0.7V
180
Gate Control (GATE Pin)
IGATE
Source current
Normal operation
-28
-22
-16
µA
Fault Sink current
UVLO = 1V
1.5
2
2.5
mA
POR Circuit Breaker sink current
VIN - SENSE = 150 mV or VIN < RPOR,
105
190
275
mA
VGATE = 5V
VGATE
Gate output voltage in normal operation
GATE voltage with respect to ground
17
18.8
20.3
V
OUT Pin
IOUT-EN
OUT bias current, enabled
OUT = VIN, normal operation
16
µA
IOUT-DIS
OUT bias current, disabled (2)
Disabled, OUT = 0V, SENSE = VIN
-12
µA
Current Limit
VCL
Threshold voltage
CL = GND
22.5
25
27.5
mV
CL = GND, TJ = 10°C to 85°C
23
25
27
CL = VDD
41
46
52
tCL
Response time
VIN-SENSE stepped from 0 mV to 80 mV
1.2
µs
ISENSE
SENSE input current
Enabled, SENSE = OUT
33
µA
Disabled, OUT = 0V
46
Enabled, OUT = 0V
45
Circuit Breaker
VCB
Threshold voltage x 1.8
VIN - SENSE, CL = GND, CB = GND
35
45
55
mV
CB:CL Ratio
CB = GND
1.6
1.8
2
VCB
Threshold voltage x 3.6
VIN - SENSE, CL = GND, CB = VDD
70
90
110
mV
CB:CL Ratio
CB = VDD
3.1
3.6
4
tCB
Response time
VIN - SENSE stepped from 0 mV to 150
0.6
1.2
µs
mV, time to GATE low, no load
Timer (TIMER pin)
VTMRH
Upper threshold
1.54
1.7
1.85
V
VTMRL
Lower threshold
Restart cycles
0.85
1.0
1.07
V
End of 8th cycle
0.3
V
Re-enable threshold
0.3
V
ITIMER
Insertion time current
TIMER pin = 2V
-8
-5.5
-3
µA
Sink current, end of insertion time
1.4
1.9
2.4
mA
Fault detection current
-120
-90
-60
µA
Fault sink current
2.8
µA
DCFAULT
Fault Restart Duty Cycle
0.67
%
tFAULT_DELAY
Fault to GATE low delay
TIMER pin reaches the upper threshold
17
µs
(2)
OUT bias current (disabled) due to leakage current through an internal 0.9 M
Ω resistance from SENSE to VOUT.
Copyright © 2012–2013, Texas Instruments Incorporated
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