参数资料
型号: LTC2935ITS8-4#TRMPBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封装: LEAD FREE, PLASTIC, MO-193, TSOT-23, 8 PIN
文件页数: 6/12页
文件大小: 134K
代理商: LTC2935ITS8-4#TRMPBF
LTC2935
3
2935fa
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC
VCC Input Supply Voltage
l
5.5
V
ICC
VCC Input Supply Current
l
225
500
1000
nA
Reset Thresholds (LTC2935-1/LTC2935-2)
VRTF1
Reset Threshold 1 (VCC Falling)
S2 = Low : S1 = Low : S0 = Low
l
3.251
3.300
3.349
V
VRTF2
Reset Threshold 2 (VCC Falling)
S2 = Low : S1 = Low : S0 = High
l
3.103
3.150
3.197
V
VRTF3
Reset Threshold 3 (VCC Falling)
S2 = Low : S1 = High : S0 = High
l
2.955
3.000
3.045
V
VRTF4
Reset Threshold 4 (VCC Falling)
S2 = Low : S1 = High : S0 = Low
l
2.808
2.850
2.892
V
VRTF5
Reset Threshold 5 (VCC Falling)
S2 = High : S1 = High : S0 = Low
l
2.660
2.700
2.740
V
VRTF6
Reset Threshold 6 (VCC Falling)
S2 = High : S1 = Low : S0 = Low
l
2.512
2.550
2.588
V
VRTF7
Reset Threshold 7 (VCC Falling)
S2 = High : S1 = Low : S0 = High
l
2.364
2.400
2.436
V
VRTF8
Reset Threshold 8 (VCC Falling)
S2 = High : S1 = High : S0 = High
l
2.217
2.250
2.283
V
ΔVRTF
Reset Threshold Differential VRTF(N+1) – VRTF(N)
(Note 3)
l
142
150
158
mV
VRT(HYST)
Reset Threshold Hysteresis (VCC Rising)
Relative to Any Selected Reset Threshold
l
4.5
5
6
%
tUVR
Undervoltage Detect to RST Falling
VCC Below Threshold by 1% (Note 3)
1
ms
Reset Thresholds (LTC2935-3/LTC2935-4)
VRTF1
Reset Threshold 1 (VCC Falling)
S2 = Low : S1 = Low : S0 = Low
l
2.404
2.440
2.476
V
VRTF2
Reset Threshold 2 (VCC Falling)
S2 = Low : S1 = Low : S0 = High
l
2.286
2.320
2.354
V
VRTF3
Reset Threshold 3 (VCC Falling)
S2 = Low : S1 = High : S0 = High
l
2.167
2.200
2.233
V
VRTF4
Reset Threshold 4 (VCC Falling)
S2 = Low : S1 = High : S0 = Low
l
2.049
2.080
2.111
V
VRTF5
Reset Threshold 5 (VCC Falling)
S2 = High : S1 = High : S0 = Low
l
1.931
1.960
1.989
V
VRTF6
Reset Threshold 6 (VCC Falling)
S2 = High : S1 = Low : S0 = Low
l
1.813
1.840
1.867
V
VRTF7
Reset Threshold 7 (VCC Falling)
S2 = High : S1 = Low : S0 = High
l
1.695
1.720
1.745
V
VRTF8
Reset Threshold 8 (VCC Falling)
S2 = High : S1 = High : S0 = High
l
1.576
1.600
1.624
V
ΔVRTF
Reset Threshold Differential VRTF(N+1) – VRTF(N)
(Note 3)
l
112
120
128
mV
VRT(HYST)
Reset Threshold Hysteresis (VCC Rising)
Relative to Any Selected Reset Threshold
l
4.5
5
6
%
tUVR
Undervoltage Detect to RST Falling
VCC Below Threshold by 1% (Note 3)
1
ms
Power-Fail Thresholds (LTC2935-1/LTC2935-2)
ΔVPFT
Power-Fail Threshold Differential VPFT(N) – VRTF(N)
Any Selected Reset Threshold (VCC Falling)
l
100
150
200
mV
VPFT(HYST) Power-Fail Threshold Hysteresis
Relative to Any Selected Power-Fail Threshold
(VCC Rising)
l
2
2.5
3.5
%
tUVP
Undervoltage Detect to PFO Falling
VCC Below Threshold by 1% (Note 3)
1
ms
Power-Fail Thresholds (LTC2935-3/LTC2935-4)
ΔVPFT
Power-Fail Threshold Differential VPFT(N) – VRTF(N)
Any Selected Reset Threshold (VCC Falling)
l
70
120
170
mV
VPFT(HYST) Power-Fail Threshold Hysteresis
Relative to Any Selected Power-Fail Threshold
(VCC Rising)
l
2
2.5
3
%
tUVP
Undervoltage Detect to PFO Falling
VCC Below Threshold by 1% (Note 3)
1
ms
Control Inputs: MR, S2, S1, S0
VIN(TH)
Control Input Threshold
S2, S1, S0
MR
l
0.3 VCC
0.4
0.7 VCC
1.4
V
tPW
Input Pulse Width
MR
l
20
μs
tPD
Propagation Delay to RST Falling
Manual Reset Falling
l
25
20
μs
RPU
Internal Pull-Up Resistance
MR
l
600
900
1200
ILK
Input Leakage Current
S2, S1, S0 = VCC or GND
l
±1
±10
nA
The
l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C, VCC = 3.6V, unless otherwise noted. (Note 2)
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