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參數資料
| 型號： | TC51N4902ECBTR |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封裝： | EIAJ, SC-59, SOT-23A, 3 PIN |
| 文件頁數： | 1/15頁 |
| 文件大小： | 544K |
| 代理商： | TC51N4902ECBTR |
2002 Microchip Technology Inc.
DS21429B-page 1
M
TC51
Features
Precise Detection Thresholds: ±2.0%
Small Package: 3-Pin SOT-23A
Low Supply Current: Typ. 1
A
Wide Detection Range: 1.6V to 6.0V
Wide Operating Voltage Range: 0.7V to 10V
Built-in Delay Circuit: 50msec to 200 msec
Open-Drain Output
Applications
Battery Voltage Monitoring
Microprocessor Reset
System Brown-out Protection
Device Selection Table
Other output voltages are available. Please contact Microchip
Technology Inc. for details.
Package Type
General Description
The TC51 is a very low power, open drain output,
CMOS voltage detector with built-in delay. It is
particularly well-suited for battery powered applications
because of its extremely low 1
A operating current and
small surface-mount packaging. Each part is laser-
trimmed to the desired threshold voltage, which can be
specified from 1.6V to 6.0V. The standard built-in
output delay is 50msec-200msec.
The device includes a comparator, low-current high-
precision reference, laser-programmed voltage divider,
hysteresis circuit and output driver with digital delay
timer.
In operation, the TC51’s output (VOUT) remains in the
logic HIGH state as long as VIN is greater than the
specified threshold voltage (VDET -). When VIN falls
below VDET -, the output is immediately driven to a logic
LOW. VOUT remains LOW until VIN rises above VDET -
by an amount VHYST, whereupon it returns to a logic
HIGH after expiration of the built-in delay time.
Functional Block Diagram
Part Number
Package
Temp. Range
TC51-xxxxxxxxxx
3-Pin SOT-23A -40°C to +85°C
VIN
VOUT
VSS
TC51
1
2
3
3-Pin SOT-23A
NOTE: 3-Pin SOT-23A is equivalent to the EIAJ SC-59.
VIN
VSS
VOUT
VREF
Delay
Circuit
1
A Voltage Detector with Output Delay
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