LTC2901-2IGN 查看數據表（PDF） - Linear Technology
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LTC2901-2IGN
Linear Technology
LTC2901-2IGN Datasheet PDF : 16 Pages
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LTC2901
TYPICAL APPLICATIO
120V AC
AC/DC
DC/DC
CONVERTERS
LOW
VOLTAGE
SECONDARY
Monitor Seven Supplies (12V, 5V, 3.3V, 2.5V, 1.8V, –2V, –5.2V) with
Sequenced Reset and AC Present Indication
12V
5V
3.3V
2.5V
1.8V
–2V
–5.2V
5V
0.1µF
3.3V
1.8V
121k 16.2k
1% 1%
487k 86.6k
1% 1%
–5.2V
4 LTC2901-1 2
V1 COMP1
14
16
V2 COMP2
3
1
V3 COMP3
13
15
V4 COMP4
8
WDI
6
RST
12
VREF
11
VPG
10
GND
7
WDO
5
CRT
9
CWT
10k
5V MONITOR
3.3V MONITOR
1.8V MONITOR
–5.2V MONITOR
12V
2.15M
1%
CRT1
47nF
100k
100k
1%
100k
1N4148 1N4148
Q1
2N3904
0.1µF
2.5V
121k 78.7k
1% 1%
187k 22.1k
1% 1%
–2V
4 LTC2901-1 2
V1 COMP1
14
16
V2 COMP2
3
1
V3 COMP3
13
15
V4 COMP4
8
WDI
6
RST
12
VREF
11
VPG
10
GND
7
WDO
5
CRT
9
CWT
10k
2.5V MONITOR
12V MONITOR
–2V MONITOR
COMMON RESET OUT
AC PRESENT
CWT
680pF
CRT2
47nF
2901 TA05
tRST1 + tRST2 = 432ms
tWD = 13.6ms
PACKAGE DESCRIPTIO
.015 ± .004
(0.38 ± 0.10)
× 45°
.007 – .0098
(0.178 – 0.249)
0° – 8° TYP
GN Package
16-Lead Plastic SSOP (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1641)
.189 – .196*
(4.801 – 4.978)
.0532 – .0688
(1.35 – 1.75)
.004 – .0098
(0.102 – 0.249)
16 15 14 13 12 11 10 9
.009
(0.229)
REF
.045 ±.005
.016 – .050
(0.406 – 1.270)
NOTE:
1. CONTROLLING DIMENSION: INCHES
2.
DIMENSIONS
ARE
IN
INCHES
(MILLIMETERS)
3. DRAWING NOT TO SCALE
.008 – .012
(0.203 – 0.305)
TYP
.0250
(0.635)
BSC
.229 – .244
(5.817 – 6.198)
*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
1 234 5678
.150 – .157**
(3.810 – 3.988)
.254 MIN
.150 – .165
GN16 (SSOP) 0204
.0165 ± .0015
.0250
BSC
RECOMMENDED SOLDER PAD LAYOUT
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PART NUMBER
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LTC2900
DESCRIPTION
3.3V Supply Monitor, Watchdog Timer and Battery Backup
Micropower Precision Triple Supply Monitor for 5V, 3.3V and ADJ
Micropower Triple Supply Monitor for 2.5V, 3.3V and ADJ
Micropower Triple Supply Monitors with Open-Drain Reset
Micropower Triple Supply Monitor with Open-Drain Reset
Programmable Quad Supply Monitor
LTC2902
Programmable Quad Supply Monitor
LTC2903
LTC2904/LTC2905
LTC2906/LTC2907
LTC2908
Precision Quad Supply Monitor in 6-Lead SOT-23
Precision Dual Supply Monitors
Precision Six Supply Monitor
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
Downloaded from: http://www.datasheetcatalog.com/
COMMENTS
2.9V Threshold
4.725V, 3.118V, 1V Thresholds (±0.75%)
Adjustable RESET and Watchdog Time-Outs
Individual Monitor Outputs in MSOP
5-Lead SOT-23 Package
Adjustable Reset Timer, 10-Lead MSOP
and 3mm × 3mm 10-Lead DFN
Adjustable Reset Timer, Supply Tolerance and
Margining Functions, 16-Lead Narrow SSOP
A Variety of Factory Trimmed Voltage Combinations
Pin Selectable Thresholds
8-Lead SOT-23 and DFN Packages
2901fb
LT 0807 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2002
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