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| 型号： | LTC2901-2CGN#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC MONITOR SUPPLY QUAD 16-SSOP |
| 标准包装： | 100 |
| 类型： | 多压监控器 |
| 监视电压数目： | 4 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 低有效 |
| 复位超时： | 最小为 5 ms |
| 电压 - 阀值： | 16 种可选阀值组合 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 管件 |
LTC2901
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. V CC = 5V, unless otherwise noted. (Notes 3, 4)
SYMBOL
V CCMINP
V CCMINC
PARAMETER
Minimum Required for Programming
Minimum Required for Comparators
CONDITIONS
V CC Rising
V CC Falling
●
●
MIN
TYP
MAX
2.42
2.32
UNITS
V
V
V REF
V PG
I VPG
I V1
I V2
I V3
I V4
I CRT(UP)
I CRT(DN)
t RST
Reference Voltage
Programming Voltage Range
V PG Input Current
V1 Input Current
V2 Input Current
V3 Input Current
V4 Input Current
CRT Pull-Up Current
CRT Pull-Down Current
Reset Time-Out Period
V CC ≥ 2.3V, I VREF = ± 1mA, C REF ≤ 1000pF
T0L Low
T0L High
V CC ≥ V CCMINP
V PG = V REF
V1 = 5V, I VREF = 12 μ A, (Note 5)
V2 = 3.3V
V3 = 2.5V
V3 = 0.55V (ADJ Mode)
V4 = 1.8V
V4 = 0.55V (ADJ Mode)
V4 = –0.05V (–ADJ Mode)
V CRT = 0V
V CRT = 1.3V
C RT = 1500pF
●
●
●
●
●
●
●
●
●
●
●
●
●
●
1.192
1.128
0
–15
–15
–15
–1.4
10
5
1.210
1.146
43
0.8
0.52
0.34
–2
20
7
1.228
1.163
V REF
± 20
75
2
1.2
15
0.8
15
15
–2.6
30
9
V
V
V
nA
μ A
μ A
μ A
nA
μ A
nA
nA
μ A
μ A
ms
t UV
V X Undervoltage Detect to RST or COMPX
V X Less Than Reset Threshold V RTX
150
μ s
by More Than 1%
V OL
Output Voltage Low RST, COMPX
I SINK = 2.5mA; V1 = 3V, V2 = 3V;
●
0.15
0.4
V
V3, V4 = 0V; V PG = 0V
I SINK = 100 μ A; V2 = 1V; V1, V3, V4 = 0V
I SINK = 100 μ A; V1 = 1V; V2, V3, V4 = 0V
●
●
0.05
0.05
0.3
0.3
V
V
V OH
Output Voltage High RST, WDO, COMPX
I SOURCE = 1 μ A
●
V2 – 1
V
(Note 6)
V OL
Output Voltage Low WDO
I SINK = 2.5mA; V1 = 5V, V2 = 3.3V;
●
0.15
0.4
V
V3, V4 = 1V; V PG = 0V
V OH
Output Voltage High RST
I SOURCE = 200 μ A
●
0.8 ? V2
V
(LTC2901-2/LTC2901-4) (Note 7)
I CWT(UP)
I CWT(DN)
t WD
CWT Pull-Up Current
CWT Pull-Down Current
Watchdog Time-Out Period
V CWT = 0V
V CWT = 1.3V
C WT = 1500pF
●
●
●
–1.4
10
20
–2
20
30
–2.6
30
40
μ A
μ A
ms
V IH
V IL
t WP
I WDI
WDI Input Threshold High
WDI Input Threshold Low
WDI Input Pulse Width
WDI Pull-Up Current
V CC = 3.3V to 5.5V
V CC = 3.3V to 5.5V
V CC = 3.3V
V WDI = 0V
●
●
●
0.4
150
–10
1.6
V
V
ns
μ A
Digital Input T0L
V IL
V IH
T0L Low Level Input Voltage
T0L High Level Input Voltage
V CC = 3.3V to 5.5V
V CC = 3.3V to 5.5V
●
●
0.7V CC
0.3V CC
V
V
I INTOL
T0L Input Current
TOL = V CC
●
± 0.1
± 1
μ A
Note 1: Stresses beyond those listed under Absolute Maximum Ratings may
cause permanent damage to the device. Exposure to any Absolute Maximum
Rating condition for extended periods may affect device reliability and
lifetime.
Note 2: All currents into pins are positive, all voltages are referenced to GND
unless otherwise noted.
Note 3: The greater of V1, V2 is the internal supply voltage (V CC ).
Note 4: 10% thresholds apply to the LTC2901-3/LTC2901-4 only when the
TOL pin is set to a logic high.
Note 5: Under static no-fault conditions, V1 will necessarily supply quiescent
current. If at any time V2 is larger than V1, V2 must be capable of supplying
the quiescent current, programming (transient) current and reference load
current.
Note 6: The output pins RST, WDO and COMPX have internal pull-ups to V2
of typically 6 μ A. However, external pull-up resistors may be used when faster
rise times are required or for V OH voltages greater than V2.
Note 7: The push-pull RST output pin on the LTC2901-2/LTC2901-4 is
actively pulled up to V2.
2901fb
3
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