LTC2909CTS8-3.3(RevA) データシートの表示（PDF） - Linear Technology
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LTC2909CTS8-3.3
(Rev.:RevA)
(Rev.:RevA)
Linear Technology
LTC2909CTS8-3.3 Datasheet PDF : 16 Pages
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LTC2909
TYPICAL APPLICATIO
Automotive Supply System with Overvoltage, Overcurrent and Overtemperature Protection and Undervoltage Reset
D1: 1N5238B OR SIMILAR
2.5V
DC/DC
Q1, Q2: FFB2227 OR SIMILAR
3.3V
RS
M1
DC/DC
VIN
0.01Ω IRLZ34
12V
RG2
10Ω
2N6507
Q1
D1
RG1
1k
CBYP1
100nF
VCC SENSE GATE
PWRGD LT1641-2
ON
FB
GND TIMER
CT
680nF
RL2
100k
CG
RFB2
10nF 100k
RFB1
10k
RL1 4.7k
RCC
4.7k
Q2
RPU1
4.7k
VCC
RST
ADJ1
LTC2909-2.5
SEL
REF
TMR
ADJ2
GND
SYSTEM
RP2A RP2B
2.49M 2.05M
CBYP2
100nF
VCC
RST
ADJ1
LTC2909-2.5
SEL
REF
RP1A
102k
RP1B
340k
TMR
ADJ2
GND
RP2C
221k
RREF
10.7k
RP1C
51.1k
RP2D RP2E
1.07M 1.15M
CBYP3
100nF
RP1D
49.9k
NTC THERMISTOR
NTHS-1206N01
R25 = 100k
R = 10.7k AT 85°C
RP1E
221k
VCC
ADJ1
SEL
LTC2909-2.5
REF
RST
ADJ2
TMR
GND
RPU2
10k
2909 TA05
CIRCUIT BREAKER AND CROWBAR
12V OV AND 3.3V OV DETECT
2.5V OV AND T > 85°C DETECT
12V, 3.3V and 2.5V UV DETECT
RELATED PARTS
PART NUMBER
LTC1326/LTC1326-2.5
LTC1536
LTC1540
LTC1726-2.5/LTC1726-5
LTC1727/LTC1728
LTC1985-1.8
LTC2900
LTC2901
LTC2902
LTC2903
LTC2904/LTC2905
LTC2906/LTC2907
LTC2908
LT6700
DESCRIPTION
Micropower Precision Triple Supply Monitor for
5V/2.5V, 3.3V and ADJ
Precision Triple Supply Monitor for PCI Applications
Nanopower Comparator with Reference
Micropower Triple Supply Monitor for 2.5V/5V, 3.3V
and ADJ
Micropower Triple Supply Monitor with Open-Drain
Reset
Micropower Triple Supply Monitor with Push-Pull
Reset Output
Programmable Quad Supply Monitor
Programmable Quad Supply Monitor
Programmable Quad Supply Monitor
Precision Quad Supply Monitor
3-State Programmable Precision Dual Supply Monitor
Precision Dual Supply Monitor 1-Selectable and
1 Adjustable
Precision Six Supply Monitor (Four Fixed and
2 Adjustable)
Micropower, Low Voltage, Dual Comparator with
400mV Reference
COMMENTS
4.725V, 3.118V, 1V Threshold (±0.75%)
Meets PCI tFAIL Timing Specifications
Adjustable Hysteresis
Adjustable Reset and Watchdog Time-Outs
Individual Monitor Outputs in MSOP/5-Lead SOT-23
5-Lead SOT-23 Package
Adjustable Reset, 10-Lead MSOP and 3mm × 3mm 10-Lead DFN
Package
Adjustable Reset and Watchdog Timer, 16-Lead SSOP Package
Adjustable Reset and Tolerance, 16-Lead SSOP Package, Margining
Functions
6-Lead SOT-23 Package, Ultralow Voltage Reset
Adjustable Tolerance and Reset Timer, 8-Lead SOT-23 Package
Separate VCC Pin, RST/⎯R⎯S⎯T Outputs/Adjustable Reset Timer
8-Lead SOT-23 and DDB Packages
6-Lead SOT-23 Package
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
2909fa
LT 0606 REV A • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2005
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