LTC2902 Linear Integrated, LTC2902 Datasheet - Page 3

• Manufacturer Part Number: LTC2902
• Description: Programmable Quad Supply Monitor
• Manufacturer: Linear Integrated

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
V
V
V
V
V
V
I
I
I
I
I
I
I
t
t
V
V
V
Digital Inputs T0, T1, RDIS
V
V
I
V
V
I
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
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.
VPG
V1
V2
V3
V4
CRT(UP)
CRT(DN)
RST
UV
INTOL
RDIS
RTAN
CC
CCMINP
CCMINC
REF
PG
OL
OH
OH
IL
IH
IL
IH
PARAMETER
– ADJ Reset Threshold
Minimum Internal Operating Voltage
Minimum Required for Programming
Minimum Required for Comparators
Reference Voltage
Programming Voltage Range
V
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
Output Voltage Low RST, COMPX
Output Voltage High RST, COMPX (Note 5)
Output Voltage High RST (LTC2902-2)
(Note 6)
T0, T1 Low Level Input Voltage
T0, T1 High Level Input Voltage
T0, T1 Input Current
RDIS Input Threshold Low
RDIS Input Threshold High
RDIS Pull-Up Current
PG
X
Undervoltage Detect to RST or COMPX
Input Current
A
CONDITIONS
V4 Input Threshold
RST, COMPX in Correct Logic State;
V
V
V
V
V
V
V1 = 5V, I
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
V
C
V
by More Than 1%
I
V3, V4 = 0V; V
I
I
I
I
V
V
T0 = 0V, T1 = V
V
V
V
CC
SINK
SINK
SINK
SOURCE
SOURCE
= 25 C. V
CC
CC
CC
CC
CC
PG
CRT
CRT
RT
X
CC
CC
CC
CC
RDIS
T0 Low, T1 Low
T0 Low, T1 High
T0 High, T1 Low
T0 High, T1 High
).
Less Than Reset Threshold V
Rising Prior to Program
Rising
Falling
= 1500pF
= 3.3V to 5.5V
= 3.3V to 5.5V
= 3.3V to 5.5V
= 3.3V to 5.5V
= V
= 0V
= 1.3V
= 2.5mA; V1 = 3V, V2 = 3V;
= 100 A; V2 = 1V; V1, V3, V4 = 0V
= 100 A; V1 = 1V; V2, V3, V4 = 0V
2.3V, I
V
= 0V
The
CCMINP
REF
= 1 A
= 200 A
VREF
CC
VREF
denotes the specifications which apply over the full operating
PG
= 12 A, (Note 4)
= 5V, unless otherwise noted. (Note 3)
CC
= 0V
= 1mA, C
Note 5: The output pins RST and COMPX have internal pull-ups to V2 of
typically 6 A. However, external pull-up resistors may be used when faster
rise times are required or for V
Note 6: The push-pull RST output pin on the LTC2902-2 is actively pulled up
to V2.
REF
RTX
1000pF
OH
0.8 • V2
voltages greater than V2.
0.7V
V2 – 1
1.192
1.160
1.128
1.096
–1.4
MIN
– 18
–15
–15
–15
0.4
10
0
5
CC
1.210
1.178
1.146
1.113
0.52
0.34
0.15
0.05
0.05
TYP
150
–10
0.8
–2
43
20
0.1
0
7
LTC2902
0.3V
1.228
1.195
1.163
1.130
MAX
–2.6
2.42
2.32
V
1.2
0.8
0.4
0.3
0.3
1.6
18
75
15
15
15
30
REF
1
20
2
9
1
CC
UNITS
3
2902f
mV
ms
nA
nA
nA
nA
V
V
V
V
V
V
V
V
A
A
A
A
A
A
V
V
V
V
V
V
V
A
V
V
A
s