TC1272-15ENBTR Microchip Technology, TC1272-15ENBTR Datasheet

IC RESET MONITOR 4.12V SOT23B-3

TC1272-15ENBTR

Manufacturer Part Number
TC1272-15ENBTR
Description
IC RESET MONITOR 4.12V SOT23B-3
Manufacturer
Microchip Technology
Type
Simple Reset/Power-On Resetr
Datasheet

Specifications of TC1272-15ENBTR

Number Of Voltages Monitored
1
Output
Push-Pull, Totem Pole
Reset
Active Low
Reset Timeout
100 ms Minimum
Voltage - Threshold
4.12V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-3, TO-236-3, Micro3™, SSD3, SST3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
TC127215ENBTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TC1272-15ENBTR
Manufacturer:
MICROCHI
Quantity:
20 000
Features
• Precision V
• 100 ms Minimum RESET, RESET Output
• Output Valid to V
• V
• Small 3-Pin SOT-23 Package
• No External Components
Applications
• Computers
• Embedded Systems
• Battery-Powered Equipment
• Critical µP Power Supply Monitoring
Package Type
© 2007 Microchip Technology Inc.
Duration
CC
Transient Immunity
**(RESET)
RESET
V
CC
CC
Monitor for 5.0V Systems
CC
**( ) is for TC1274
3-Pin SOT-23
1
2
= 1.2V
3-Pin Reset Monitors for 5V Systems
TC1272
TC1273
TC1274
TC1272/TC1273/TC1274
3
GND
General Description
The
system supervisor circuits designed to monitor V
digital systems and provide a reset signal to the host
processor when necessary. No external components
are required.
The reset output is driven active within 20 µs of V
falling through the reset voltage threshold. RESET is
maintained active for a minimum of 100 ms after V
rises above the reset threshold. The TC1274 has an
active-high RESET output, while the TC1272 and
TC1273 have an active-low RESET output. The
TC1272 and TC1274 each have a complimentary out-
put, while the TC1273 has an open-drain output. The
output of the TC1272 and TC1273 is valid down to V
= 1.2V. The TC1274 is valid down to V
three devices are available in a 3-Pin SOT-23
package.
The TC1272/TC1273/TC1274 devices are optimized to
reject fast transient glitches on the V
Typical Application Circuit
V
CC
TC1272/TC1273/TC1274
Obsolete Device
TC1272
GND
V
2
3
RESET
CC
1
are
CC
DS21382C-page 1
RESET
Input
Processor
line.
CC
cost-effective
GND
= 1.8V. All
V
CC
CC
CC
CC
CC
in

Related parts for TC1272-15ENBTR

TC1272-15ENBTR Summary of contents

Page 1

... TC1273 have an active-low RESET output. The TC1272 and TC1274 each have a complimentary out- put, while the TC1273 has an open-drain output. The output of the TC1272 and TC1273 is valid down 1.2V. The TC1274 is valid down to V three devices are available in a 3-Pin SOT-23 package ...

Page 2

... RPU2 Note 1: All voltages referenced to ground. ≥ 2.7 volts. 2: Measured with Measured with RESET output open for TC1272/TC1273; measured with RESET output open for TC1274 µ kΩ external resistor may be required in some applications for proper operation of the microprocessor reset control circuit when using the TC1273. ...

Page 3

... 100mV OD 10000 V = 200mV 1000 V OD 100 100 1000 10000 100000 V SLEW RATE (V/ sec) CC FIGURE 2-1: V Detect to Reset CC (RESET). © 2007 Microchip Technology Inc. TC1272/TC1273/TC1274 ) is defined in Figure 4-5 OD 300 200 = 2V 100 FIGURE 2-2: Comparator Overdrive. = +25° COMPARATOR OVERDRIVE (V) Reset Delays vs. DS21382C-page 3 ...

Page 4

... TC1272 is complimentary, while the output stage of the TC1273 is open-drain. DS21382C-page 4 Function RESET Output (TC1272 and TC1273) RESET Output (TC1274) Supply voltage (1.2V to 5.5V TC1272 and TC1273; 1.8V to 5.5V TC1274) Ground 3.2 RESET Output (RESET) is below the The RESET output remains high while V ...

Page 5

... APPLICATIONS INFORMATION 4.1 Operation – Power Monitor The TC1272/TC1273/TC1274 is designed to function as a voltage monitor for +5V systems. These devices provide a RESET signal to indicate that the V dropped below a preset voltage level that is selected by the suffix part number. In addition, the RESET is held active for approximately 200 ms after the power supply ...

Page 6

... TC1272/TC1273/TC1274. 4.3 RESET Signal Integrity During Power-Down The TC1272 RESET output is valid to V Below this voltage the output becomes an "open circuit" and does not sink current. This means CMOS logic inputs to the μP will be floating at an undeter- mined voltage. Most digital systems are completely shut down well above this voltage ...

Page 7

... PACKAGING INFORMATION 5.1 Package Marking Information 3-Pin SOT- represents part number code + & temperature range and voltage Reset V TC1272 TC1273 CC Threshold (V) Code Code represents year and quarter code 3 represents lot ID number 4 © 2007 Microchip Technology Inc. TC1272/TC1273/TC1274 TC1274 Code DS21382C-page 7 ...

Page 8

... TC1272/TC1273/TC1274 3-Lead Plastic Small Outline Transistor (TT or NB) [SOT-23] Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging Number of Pins Lead Pitch Outside Lead Pitch Overall Height Molded Package Thickness Standoff Overall Width Molded Package Width ...

Page 9

... Temperature Range -40°C to +85°C Package Plastic Small Outline Transistor (SOT-23), 3-lead © 2007 Microchip Technology Inc. TC1272/TC1273/TC1274 /XX Examples: Package a) TC1272-10ENBTR: 4.37V Reset b) TC1272-15ENBTR: 4.12V Reset c) TC1272-5ENBTR: a) TC1273-10ENBTR: 4.37V Reset b) TC1273-15ENBTR: 4.12V Reset c) TC1273-5ENBTR: a) TC1274-10ENBTR: 4.37V Reset b) TC1274-15ENBTR: 4.12V Reset c) TC1274-5ENBTR: 4 ...

Page 10

... TC1272/TC1273/TC1274 NOTES: DS21382C-page 10 © 2007 Microchip Technology Inc. ...

Page 11

... Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 12

... Fax: 886-3-572-6459 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2007 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...

Related keywords