LTC1326CMS8-2.5 Linear Technology, LTC1326CMS8-2.5 Datasheet

IC PREC TRPL SUPPLY MONITR 8MSOP

LTC1326CMS8-2.5

Manufacturer Part Number
LTC1326CMS8-2.5
Description
IC PREC TRPL SUPPLY MONITR 8MSOP
Manufacturer
Linear Technology
Type
Multi-Voltage Supervisorr
Datasheet

Specifications of LTC1326CMS8-2.5

Number Of Voltages Monitored
3
Output
Open Drain or Open Collector
Reset
Active High/Active Low
Reset Timeout
140 ms Minimum
Voltage - Threshold
2.363V, 3.118V, Adj
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC1326CMS8-2.5
Manufacturer:
LT
Quantity:
10 000
Part Number:
LTC1326CMS8-2.5
Manufacturer:
LT
Quantity:
20 000
Part Number:
LTC1326CMS8-2.5
0
Part Number:
LTC1326CMS8-2.5#TRPBF
Manufacturer:
LINEAR
Quantity:
14 921
Part Number:
LTC1326CMS8-2.5#TRPBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LTC1326CMS8-2.5TRPBF
Manufacturer:
LINEAR
Quantity:
14 362
FEATURES
APPLICATIO S
TYPICAL APPLICATIO
Simultaneously Monitors Three Supplies
LTC1326: 5V, 3.3V and ADJ
LTC1326-2.5: 2.5V, 3.3V and ADJ
Guaranteed Threshold Accuracy: ±0.75%
Low Supply Current: 20µA
Internal Reset Time Delay: 200ms
Manual Push-Button Reset Input
Active Low and Active High Reset Outputs
Active Low “Soft” Reset Output
Power Supply Glitch Immunity
Guaranteed RESET for V
or V
8-Pin SO and MSOP Packages
Desktop Computers
Notebook Computers
Intelligent Instruments
Portable Battery-Powered Equipment
PUSH-BUTTON
CC25
CONVERTER
RESET
DC/DC
≥ 1V
V
PBR
CC25
U
LTC1326-2.5
V
GND
CC3
V
SRST
CC3
RST
2.5V
3.3V
V
CCA
CORE
0.1µF
≥ 1V or V
U
CC5
1326/2.5 TA01
SYSTEM
≥ 1V
LOGIC
DESCRIPTIO
The LTC
intended for systems with multiple supply voltages. They
provide micropower operation, small size and high accu-
racy supply monitoring.
Tight 0.75% threshold accuracy and glitch immunity
ensure reliable reset operation without false triggering.
The 20µA typical supply current makes the LTC1326/
LTC1326-2.5 ideal for power-conscious systems.
The RST output is guaranteed to be in the correct state for
V
can be configured to monitor one, two or three inputs,
depending on system requirements.
A manual push-button reset input provides the ability to
generate a very narrow “soft” reset pulse (100µs typ) or a
200ms reset pulse equivalent to a power-on reset. Both
SRST and RST outputs are open-drain and can be OR-tied
with other reset sources.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 4843302.
CC3
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
, V
RST Output Voltage vs Supply Voltage (LTC1326-2.5)
CC5
®
1326/LTC1326-2.5 are triple supply monitors
or V
Micropower Precision
Triple Supply Monitors
3.5
3.0
2.0
1.5
1.0
2.5
0.5
0
CC25
0
V
4.7k PULL-UP FROM RST TO V
T
LTC1326/LTC1326-2.5
CC25
A
0.5
= 25°C
down to 1V. The LTC1326/LTC1326-2.5
U
= V
1.0
CCA
= V
1.5
V
CC3
CC3
2.0
(V)
2.5
CC3
1326/2.5 TA02
3.0
3.5
132625fc
1

Related parts for LTC1326CMS8-2.5

LTC1326CMS8-2.5 Summary of contents

Page 1

... Both SRST and RST outputs are open-drain and can be OR-tied with other reset sources. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 4843302. ...

Page 2

... T = 250°C/W JMAX JA ORDER PART NUMBER MS8 PART NUMBER LTC1326CMS8-2.5 LTC1326IMS8-2.5 Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult factory for parts specified with wider operating temperature ranges. ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are 25°C unless otherwise noted. CCA CC3 A SYMBOL PARAMETER V Reset Threshold V RT3 CC3 V Reset Threshold V (LTC1326) RT5 CC5 (LTC1326-2.5) 0°C ≤ ...

Page 4

LTC1326/LTC1326-2.5 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T otherwise noted. SYMBOL PARAMETER V RST Output Voltage High (Note 3) OH SRST Output Voltage High (Note 3) RST Output Voltage High t Prop Delay RST to RST PHL High ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS V Input Current vs Input Voltage CCA 25° – 1 – 2 – 3 0.8 0.85 0.9 0.95 1.0 1.05 1.1 1.15 1.2 INPUT VOLTAGE (V) ...

Page 6

LTC1326/LTC1326-2 TYPICAL PERFOR A CE CHARACTERISTICS Reset Pulse Width vs Temperature 225 220 215 210 205 200 195 190 80 – 60 – 40 – TEMPERATURE (°C) 1326/2.5 G13 PIN ...

Page 7

W BLOCK DIAGRA S V CC3 7µA PBR 8 TO POWER DETECT V 2 CC5 V CC3 INTERNAL V 1 CC3 V 3 CCA GND 4 V CC3 7µA PBR CC25 V CC3 INTERNAL V 1 CC3 ...

Page 8

LTC1326/LTC1326-2 DIAGRA S V Monitor Timing CC V RTX V CCX RST U U APPLICATIO S I FOR ATIO Operation The LTC1326/LTC1326-2.5 are micropower, high accu- racy triple supply monitoring circuits. The parts have ...

Page 9

U U APPLICATIO S I FOR ATIO During a supply induced reset condition, the ability of the PBR pin to force a soft reset condition on the SRST pin is disabled. In other words SRST will remain high. If the ...

Page 10

LTC1326/LTC1326-2 APPLICATIO S I FOR ATIO Figure 3 contains a simple circuit for 5V systems that can’t risk the RST output going high in the 3.1V to 4.15V range (possibly due to very slow rise time on the ...

Page 11

U TYPICAL APPLICATIONS ADJUSTABLE SUPPLY OR DC/DC FEEDBACK ADJUSTABLE N Triple Supply Monitor (3.3V, 5V and Adjustable) LTC1326 1 3.3V V PBR CC3 SRST CC5 RST CCA 4 DIVIDER R2 GND RST Dual Supply ...

Page 12

LTC1326/LTC1326-2.5 U TYPICAL APPLICATIONS SRST Tied to RST and OR-Tying Other Sources to RST to THRESHOLD 2.74V Using the Short Pulse Width, Push-Button Soft Reset Feature 12 N Generate Reset and Reset PUSHBUTTON LTC1326/ 8 LTC1326-2.5 PBR 3.3V 4.7k 6µA ...

Page 13

U TYPICAL APPLICATIONS 3.3V 5V 2N3906 2N3904 –5V 3.3V LTC1326-2 PBR CC3 2 2.5V V SRST CC25 R1 3 ADJUSTABLE V RST CCA SUPPLY 4 R2 GND RST N Monitoring a Negative Supply LTC1326 C1 0.1µ ...

Page 14

LTC1326/LTC1326-2.5 PACKAGE DESCRIPTIO 5.23 (.206) MIN 0.42 ± 0.038 (.0165 ± .0015) TYP RECOMMENDED SOLDER PAD LAYOUT 0.254 (.010) GAUGE PLANE 0.18 (.007) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, ...

Page 15

... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 16

... Adjustable Tolerance and Reset Timer, 8-Lead SOT-23 Package 8-Lead SOT-23 and DDB Packages www.linear-tech.com 10k TO 3.3V SYSTEM RESET TO 5V SYSTEM RESET Q1 2N7002 1326/2.5 TA14 Timing Specifications FAIL Pin, RST/RST Outputs/Adjustable Reset Timer CC LT 1006 REV C • PRINTED IN THE USA © LINEAR TECHNOLOGY CORPORATION 2006 132625fc ...

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