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參數資料
| 型號： | TC54VC4401EMB |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PSSO3 |
| 封裝： | SOT-89, 3 PIN |
| 文件頁數： | 1/12頁 |
| 文件大小： | 215K |
| 代理商： | TC54VC4401EMB |
2002 Microchip Technology Inc.
DS21434C-page 1
M
TC54
Features
Precise Detection Thresholds: Standard ±2.0%,
Custom ±1.0%
Small Packages: 3-Pin SOT-23A, 3-Pin SOT-89,
5-Pin SOT-23A (7.7V only)
Low Current Drain: Typ. 1
A
Wide Detection Range: 1.1V to 6.0V and 7.7V
Wide Operating Voltage Range: 0.7V to 10V
Applications
Battery Voltage Monitoring
Microprocessor Reset
System Brown-out Protection
Switching Circuit in Battery Backup
Level Discriminator
Device Selection Table
Other output voltages are available. Please contact Microchip
Technology Inc. for details.
Package Type
General Description
The TC54 Series are CMOS voltage detectors, suited
especially for battery-powered applications because of
their 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 1.1V to 6.0V and 7.7V, for a 2% and 1.5V to 6.0V
for a 1% tolerance.
The device includes a comparator, low-current high-
precision reference, laser-trimmed divider, hysteresis
circuit and output driver. The TC54 is available with
either an open-drain or complementary output stage.
In operation, the TC54'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 driven to a logic LOW. VOUT
remains LOW until VIN rises above VDET - by an
amount VHYST, whereupon it resets to a logic HIGH.
Functional Block Diagram
Part Number
Package
Temp. Range
TC54-xxxxxxxxxxx 3-Pin SOT-23A -40°C to +85°C
TC54-xxxxxxxxxxx
3-Pin SOT-89
-40°C to +85°C
TC54-xxxxxxxxxxx 5-Pin SOT-23A -40°C to +85°C
13
2
VIN
VSS
VOUT
VSS
VOUT
TC54
1
3
2
3-Pin SOT-23A
3-Pin SOT-89
5
5-Pin SOT-23A
TC54
1
3
4
2
NC
VOUT
VIN
VSS
NC
NOTE: 3-Pin SOT-23A is equivalent to the EIAJ SC-59.
5-Pin SOT-23A is equivalent to the EIAJ SC-74A.
VOUT
TC54VC only
VSS
1
3
+
–
VIN
2
VREF
TC54VN has open-drain output.
TC54VC has complementary output.
Voltage Detector
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