TC54VN1401ECT 查看數據表（PDF） - Microchip Technology

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TC54VN1401ECT

Voltage Detector

Microchip Technology 

Voltage Detector

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 µA

• 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

2

VIN

TC54VC only

–

VOUT

1

+

VREF

VSS

3

TC54VN has open-drain output.

TC54VC has complementary output.

General Description

The TC54 series are CMOS voltage detectors that are

especially well suited for battery-powered applications

because of their extremely low 1 µA 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 from

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.

During 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.

Package Types

3-Pin SOT-23A

VIN

3

3-Pin SOT-89

VIN

TC54

1

2

VOUT

VSS

TC54

1 23

VOUT VIN VSS

3-Pin TO-92

123

5-Pin SOT-23A

NC

NC

5

4

TC54

1 23

VOUT VIN VSS

VOUT VIN VSS

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)

 2004 Microchip Technology Inc.

DS21434G-page 1

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