16
LTC2901
2901fb
LT 0807 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2002
COMP1
COMP2
COMP3
COMP4
RST
WDO
CRT
CWT
V1
V2
V3
V4
WDI
V
REF
V
PG
GND
2
16
1
15
6
7
5
9
2.5V MONITOR
12V MONITOR
–2V MONITOR
COMMON RESET OUT
AC PRESENT
4
14
3
13
8
12
11
10
LTC2901-1
C
WT
680pF
2901 TA05
C
RT2
47nF
78.7k
1%
121k
1%
187k
1%
Q1
2N3904
2.15M
1%
12V
2.5V
0.1μF
–2V
100k
1%
100k
22.1k
1%
10k
COMP1
COMP2
COMP3
COMP4
RST
WDO
CRT
CWT
V1
V2
V3
V4
WDI
V
REF
V
PG
GND
2
16
1
15
6
7
5
9
5V MONITOR
3.3V MONITOR
1.8V MONITOR
–5.2V MONITOR
12V
5V
3.3V
2.5V
1.8V
–2V
–5.2V
4
14
3
13
8
12
11
10
LTC2901-1
3.3V
5V
0.1μF
1.8V
1N4148
C
RT1
47nF
16.2k
1%
121k
1%
487k
1%
LOW
VOLTAGE
SECONDARY
AC/DC
DC/DC
CONVERTERS
–5.2V
86.6k
1%
10k
1N4148
100k
120V AC
t
RST1
+ t
RST2
= 432ms
t
WD
= 13.6ms
Monitor Seven Supplies (12V, 5V, 3.3V, 2.5V, 1.8V, –2V, –5.2V) with
Sequenced Reset and AC Present Indication
TYPICAL APPLICATIO
U
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
U
PACKAGE DESCRIPTIO
GN Package
16-Lead Plastic SSOP (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1641)
.016 – .050
(0.406 – 1.270)
.015
± .004
(0.38 ± 0.10)
× 45°
0° – 8° TYP
.007 – .0098
(0.178 – 0.249)
.0532 – .0688
(1.35 – 1.75)
.008 – .012
(0.203 – 0.305)
TYP
.004 – .0098
(0.102 – 0.249)
.0250
(0.635)
BSC
GN16 (SSOP) 0204
12
3
4
5
6
7
8
.229 – .244
(5.817 – 6.198)
.150 – .157**
(3.810 – 3.988)
16
15
14
13
.189 – .196*
(4.801 – 4.978)
12 11 10
9
.009
(0.229)
REF
.254 MIN
RECOMMENDED SOLDER PAD LAYOUT
.150 – .165
.0250
BSC
.0165
±.0015
.045 ±.005
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
INCHES
(MILLIMETERS)
NOTE:
1. CONTROLLING DIMENSION: INCHES
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
PART NUMBER DESCRIPTION COMMENTS
LTC694-3.3 3.3V Supply Monitor, Watchdog Timer and Battery Backup 2.9V Threshold
LTC1326 Micropower Precision Triple Supply Monitor for 5V, 3.3V and ADJ 4.725V, 3.118V, 1V Thresholds (±0.75%)
LTC1726-2.5 Micropower Triple Supply Monitor for 2.5V, 3.3V and ADJ Adjustable RESET and Watchdog Time-Outs
LTC1727-2.5/LTC1727-5 Micropower Triple Supply Monitors with Open-Drain Reset Individual Monitor Outputs in MSOP
LTC1728-1.8/LTC1728-3.3 Micropower Triple Supply Monitor with Open-Drain Reset 5-Lead SOT-23 Package
LTC2900 Programmable Quad Supply Monitor Adjustable Reset Timer, 10-Lead MSOP
and 3mm × 3mm 10-Lead DFN
LTC2902 Programmable Quad Supply Monitor Adjustable Reset Timer, Supply Tolerance and
Margining Functions, 16-Lead Narrow SSOP
LTC2903 Precision Quad Supply Monitor in 6-Lead SOT-23 A Variety of Factory Trimmed Voltage Combinations
LTC2904/LTC2905 Precision Dual Supply Monitors Pin Selectable Thresholds
LTC2906/LTC2907
LTC2908 Precision Six Supply Monitor 8-Lead SOT-23 and DFN Packages
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