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LTC4215 Datasheet(数据表) 3 Page - Linear Technology

部件型号  LTC4215
说明  Hot Swap Controller with I2C Compatible Monitoring
下载  24 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC4215 Datasheet(HTML) 3 Page - Linear Technology

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LTC4215
3
4215fb
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supplies
VDD
Input Supply Range
2.9
15
V
VOV(VDD)
Input Supply Overvoltage Threshold
15
15.6
16.5
V
IDD
Input Supply Current
35
mA
VDD(UVL)
Input Supply Undervoltage Lockout
VDD Rising
2.75
2.84
2.89
V
VDD(HYST)
Input Supply Undervoltage Lockout Hysteresis
75
100
125
mV
INTVCC
Internal Regulator Voltage
VDD ≥ 3.3V
2.9
3.1
3.4
V
INTVCC(UVL)
INTVCC Undervoltage Lockout
INTVCC Rising
2.55
2.64
2.79
V
INTVCC(HYST)
INTVCC Undervoltage Lockout Hysteresis
20
55
75
mV
Current Limit and Circuit Breaker
ΔVSENSE(TH)
Circuit Breaker Threshold (VDD – VSENSE)
22.5
25
27.5
mV
ΔVSENSE
Current Limit Voltage (VDD – VSENSE)VFB = 1.3V
VFB = 0V
Start-Up Timer Expired
22
6.5
65
25
10
75
29
13
90
mV
mV
mV
tD(OC)
OC Fault Filter
ΔVSENSE = 50mV
15
20
30
µs
ISENSE(IN)
SENSE Pin Input Current
VSENSE = 12V
10
20
35
µA
Gate Drive
ΔVGATE
External N-Channel Gate Drive (VGATE – VSOURCE)
(Note 3)
VDD = 2.9V to 15V
4.7
5.9
6.5
V
IGATE(UP)
External N-Channel Gate Pull-Up Current
Gate On, VGATE = 0V
–15
–20
–30
µA
IGATE(DN)SLOW
External N-Channel Gate Pulldown Current
Gate Off, VGATE = 15V
0.8
1
1.6
mA
IGATE(DN)FAST
Pulldown Current From GATE to SOURCE
During OC/UVLO
VDD – SENSE = 100mV, VGS = 4V
300
450
700
mA
tPHL(SENSE)
(VDD – SENSE) High to GATE Low
VDD – SENSE = 100mV, CGS = 10nF
0.5
1
µs
VGS(POWERBAD)
Gate-Source Voltage for Power Bad Fault
VSOURCE = 2.9V – 15V
3.8
4.3
4.7
V
Comparator Inputs
VON(TH)
ON Pin Threshold Voltage
VON Rising
1.210
1.235
1.26
V
ΔVON(HYST)
ON Pin Hysteresis
60
128
180
mV
ION(IN)
ON Pin Input Current
VON = 1.2V
0±1
µA
V⎯E⎯N(TH)
⎯E⎯N Input Threshold
V⎯E⎯N = Rising
1.215
1.235
1.255
V
ΔV⎯E⎯N(HYST)
⎯E⎯N Hysteresis
50
128
200
mV
I⎯E⎯N
⎯E⎯N Pin Input Current
⎯E⎯N = 3.5V
0±1
µA
VOV(TH)
OV Pin Threshold Voltage
VOV Rising
1.215
1.235
1.255
V
ΔVOV(HYST)
OV Pin Hysteresis
10
30
40
mV
IOV(IN)
OV Pin Input Current
VOV = 1.8V
0±1
µA
VUV(TH)
UV Pin Threshold Voltage
VUV Rising
1.215
1.235
1.255
V
ΔVUV(HYST)
UV Pin Hysteresis
60
80
100
mV
IUV(IN)
UV Pin Input Current
VUV = 1.8V
0±1
µA
VUV(RTH)
UV Pin Reset Threshold Voltage
VUV Falling
0.33
0.4
0.47
V
ΔVUV(RHYST)
UV Pin Reset Threshold Hysteresis
60
125
210
mV
VFB
Foldback Pin Power Good Threshold
FB Rising
1.215
1.235
1.255
V
ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VDD = 12V unless otherwise noted.




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