參數(shù)資料
型號： LTC2902-1CGN
廠商： Linear Integrated Systems
英文描述： Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance
中文描述： 可編程四路電源監(jiān)視器可調(diào)復(fù)位定時器和供應(yīng)公差
文件頁數(shù)： 3/16頁
文件大?。?/td> 206K
代理商： LTC2902-1CGN
3
LTC2902
2902f
The
G
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)
ELECTRICAL CHARACTERISTICS
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
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 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 activelypulled up
to V2.
SYMBOL
V
RTAN
V
CC
PARAMETER
–ADJ Reset Threshold
Minimum Internal Operating Voltage
CONDITIONS
V4 Input Threshold
RST, COMPX in Correct Logic State;
V
CC
Rising Prior to Program
V
CC
Rising
V
CC
Falling
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
V
CC
≥
V
CCMINP
V
PG
= V
REF
V1 = 5V, I
VREF
= 12
μ
A, (Note 4)
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
V
X
Less Than Reset Threshold V
RTX
by More Than 1%
I
SINK
= 2.5mA; V1 = 3V, V2 = 3V;
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
I
SOURCE
= 1
μ
A
I
SOURCE
= 200
μ
A
MIN
–18
TYP
0
MAX
18
1
UNITS
mV
G
G
V
V
CCMINP
V
CCMINC
V
REF
Minimum Required for Programming
Minimum Required for Comparators
Reference Voltage
G
2.42
2.32
V
V
G
G
G
G
G
1.192
1.160
1.128
1.096
0
1.210
1.178
1.146
1.113
1.228
1.195
1.163
1.130
V
REF
±
20
75
2
1.2
15
0.8
15
15
–2.6
30
9
V
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
G
G
nA
μ
A
μ
A
μ
A
nA
μ
A
nA
nA
μ
A
μ
A
ms
μ
s
G
43
0.8
0.52
G
G
–15
I
V4
V4 Input Current
G
G
G
0.34
–15
–15
–1.4
10
5
I
CRT(UP)
I
CRT(DN)
t
RST
t
UV
CRT Pull-Up Current
CRT Pull-Down Current
Reset Time-Out Period
V
X
Undervoltage Detect to RST or COMPX
G
–2
20
7
150
G
G
V
OL
Output Voltage Low RST, COMPX
G
0.15
0.4
V
G
G
0.05
0.05
0.3
0.3
V
V
V
V
V
OH
V
OH
Output Voltage High RST, COMPX (Note 5)
Output Voltage High RST (LTC2902-2)
(Note 6)
Digital Inputs T0, T1, RDIS
V
IL
T0, T1 Low Level Input Voltage
V
IH
T0, T1 High Level Input Voltage
I
INTOL
T0, T1 Input Current
V
IL
RDIS Input Threshold Low
V
IH
RDIS Input Threshold High
I
RDIS
RDIS Pull-Up Current
G
V2 – 1
0.8 V2
G
V
CC
= 3.3V to 5.5V
V
CC
= 3.3V to 5.5V
T0 = 0V, T1 = V
CC
V
CC
= 3.3V to 5.5V
V
CC
= 3.3V to 5.5V
V
RDIS
= 0V
G
0.3V
CC
V
V
G
0.7V
CC
G
±
0.1
±
1
μ
A
V
V
μ
A
G
0.4
G
1.6
–10
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