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參數(shù)資料
| 型號： | TC54VN4202EZB |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBCY3 |
| 封裝： | TO-92, 3 PIN |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 340K |
| 代理商： | TC54VN4202EZB |
2003 Microchip Technology Inc.
DS21434E-page 1
M
TC54
Features
Precise Detection Thresholds: Standard ±2.0%,
Custom ±1.0%
Small Packages: 3-Pin SOT-23A, 3-Pin SOT-89,
TO-92 and 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
Functional Block Diagram
General Description
The TC54 Series are CMOS voltage detectors that are
especially well suited 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 1.4V to 7.7V for a 2% tolerance,
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 spec-
ified 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.
Package Types
VOUT
TC54VC only
VSS
1
3
+
–
VIN
2
TC54VN has open-drain output.
TC54VC has complementary output.
VREF
1
3
2
VIN VSS
VOUT
TC54
3-Pin SOT-89
5
5-Pin SOT-23A
TC54
1
3
4
2
NC
Note:
3-Pin SOT-23A is equivalent to the
EIAJ SC-59
5-Pin SOT-23A is equivalent to the
EIAJ SC-74A. (7.7V ONLY)
3-Pin TO-92
12 3
VSS
VIN
VOUT
VIN
VOUT
VSS
3
12
TC54
3-Pin SOT-23A
VIN
VIN VSS
VOUT
VSS
Voltage Detector
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