参数资料
型号: LTC2902-2CGN#TRPBF
厂商: Linear Technology
文件页数: 3/16页
文件大小: 0K
描述: IC MON SUPP QD W/RST&SEL 16-SSOP
标准包装: 2,500
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: 带卷 (TR)
LTC2902
ELECTRICAL CHARACTERISTICS The q 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. (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V RTAN
V CC
– ADJ Reset Threshold
Minimum Internal Operating Voltage
V4 Input Threshold
RST, COMPX in Correct Logic State;
q
q
– 18
0
18
1
mV
V
V CC Rising Prior to Program
V CCMINP
V CCMINC
Minimum Required for Programming
Minimum Required for Comparators
V CC Rising
V CC Falling
q
q
2.42
2.32
V
V
V REF
Reference Voltage
V CC ≥ 2.3V, I VREF = ± 1mA, C REF ≤ 1000pF
T0 Low, T1 Low
T0 Low, T1 High
T0 High, T1 Low
T0 High, T1 High
q
q
q
q
1.192
1.160
1.128
1.096
1.210
1.178
1.146
1.113
1.228
1.195
1.163
1.130
V
V
V
V
V PG
I VPG
I V1
I V2
I V3
Programming Voltage Range
V PG Input Current
V1 Input Current
V2 Input Current
V3 Input Current
V CC ≥ V CCMINP
V PG = V REF
V1 = 5V, I VREF = 12 μ A, (Note 4)
V2 = 3.3V
V3 = 2.5V
q
q
q
q
q
0
43
0.8
0.52
V REF
± 20
75
2
1.2
V
nA
μ A
μ A
μ A
V3 = 0.55V (ADJ Mode)
–15
15
nA
I V4
V4 Input Current
V4 = 1.8V
V4 = 0.55V (ADJ Mode)
V4 = –0.05V (–ADJ Mode)
q
q
q
–15
–15
0.34
0.8
15
15
μ A
nA
nA
I CRT(UP)
I CRT(DN)
t RST
CRT Pull-Up Current
CRT Pull-Down Current
Reset Time-Out Period
V CRT = 0V
V CRT = 1.3V
C RT = 1500pF
q
q
q
–1.4
10
5
–2
20
7
–2.6
30
9
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;
q
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
q
q
0.05
0.05
0.3
0.3
V
V
V OH
V OH
Output Voltage High RST, COMPX (Note 5)
Output Voltage High RST (LTC2902-2)
I SOURCE = 1 μ A
I SOURCE = 200 μ A
q
q
V2 – 1
0.8 ? V2
V
V
(Note 6)
Digital Inputs T0, T1, RDIS
V IL
V IH
T0, T1 Low Level Input Voltage
T0, T1 High Level Input Voltage
V CC = 3.3V to 5.5V
V CC = 3.3V to 5.5V
q
q
0.7V CC
0.3V CC
V
V
I INTOL
T0, T1 Input Current
T0 = 0V, T1 = V CC
q
± 0.1
± 1
μ A
V IL
V IH
I RDIS
RDIS Input Threshold Low
RDIS Input Threshold High
RDIS Pull-Up Current
V CC = 3.3V to 5.5V
V CC = 3.3V to 5.5V
V RDIS = 0V
q
q
0.4
–10
1.6
V
V
μ A
Note 1: Absolute Maximum Ratings are those values beyond which the life of
a device may be impaired.
Note 2: All voltage values are with respect to GND.
Note 3: The greater of V1, V2 is the internal supply voltage (V CC ).
Note 4: Under static no-fault conditions, V1 will necessarily supply quiescent
Note 5: The output pins RST 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 6: The push-pull RST output pin on the LTC2902-2 is actively pulled up
to V2.
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.
2902f
3
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