LTC2900-1IMS#TRPBF Linear Technology, LTC2900-1IMS#TRPBF Datasheet - Page 10

• Manufacturer Part Number: LTC2900-1IMS#TRPBF
• Description: IC MON SUPP QUAD OPEN DRN 10MSOP
• Manufacturer: Linear Technology
• Type: Multi-Voltage Supervisorr

Specifications of LTC2900-1IMS#TRPBF

• Number Of Voltages Monitored: 4
• Output: Open Drain or Open Collector
• Reset: Active Low
• Reset Timeout: 5 ms Minimum
• Voltage - Threshold: 16 Selectable Threshold Combinations
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

APPLICATIO S I FOR ATIO
LTC2900
sensed and ground, is connected to the high impedance
noninverting inputs (V3, V4). The trip voltage is calculated
from:
In the negative adjustable mode, the noninverting input on
the V4 comparator is connected to ground (Figure 6). The
tap point on an external resistive divider, connected be-
tween the negative voltage being sensed and the V
is connected to the high impedance inverting input (V4).
V
at ground. The trip voltage is calculated from:
In a negative adjustable application, the minimum value
for R4 is limited by the sourcing capability of V
With no other load on V
Tables 2 and 3 offer suggested 1% resistor values for
various adjustable applications.
10
REF
1.21V 1mA = 1.21k .
V
V
TRIP
TRIP
provides the necessary level shift required to operate
Figure 5. Setting the Positive Adjustable Trip Point
V3 OR V4
0 5 1
–
.
V
REF
V
V
TRIP
R3
1%
R4
1%
R
U
R
3
4
R
R
3
4
;
REF
V
U
REF
+
–
, R4 (minimum) is:
0.5V
+
–
1 210
LTC2900
.
W
V No
min
2900 F05
REF
U
al
( 1mA).
REF
pin,
Table 2. Suggested 1% Resistor Values for the ADJ Inputs
Table 3. Suggested 1% Resistor Values for the –ADJ Input
V
V
SUPPLY
SUPPLY
–5.2
–10
–12
Figure 6. Setting the Negative Adjustable Trip Point
7.5
3.3
2.5
1.8
1.5
1.2
0.9
–2
–5
12
10
8
6
5
3
1
(V)
(V)
V
TRIP
R4
1%
R3
1%
V
V
–11.30
TRIP
TRIP
11.25
4.725
3.055
2.325
1.685
1.410
1.120
0.933
0.840
–1.87
–4.64
–4.87
–9.31
2.82
8
9
9.4
7.5
5.6
7
V
V4
(V)
(V)
REF
–
+
LTC2900
R3 (k )
R3 (k )
2150
1780
1400
1300
1020
1130
86.6
68.1
845
511
464
365
237
182
124
187
464
487
931
2900 F06
R4 (k )
R4 (k )
100
100
100
100
100
100
100
100
100
100
100
100
100
100
121
121
121
121
121
2900f