TC54VN2102EZBRT - Microchip Technology

TC54 Series

FEATURES

■Precise Detection Thresholds .... Standard ± 2.0%

Custom ± 1.0%

■Small Packages ......3-Pin SOT-23A, 3-Pin SOT-89,

3-Pin TO-92

■Low Current Drain .....................................Typ. 1µA

■Wide Detection Range..........................1.1V to 6.0V

■Wide Operating Voltage Range ............0.7V to 10V

APPLICATIONS

■Battery Voltage Monitoring

■Microprocessor Reset

■System Brownout Protection

■Switching Circuit in Battery Backup

■Level Discriminator

GENERAL DESCRIPTION

The TC54 Series are CMOS voltage detectors, suited

especially for battery-powered applications because of their

extremely low 1µA 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,

in 0.1V steps 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 (V–

DET). When VIN falls below

V–

DET, the output is driven to a logic LOW. VOUT remains

LOW until VIN rises above V–

DET by an amount VHYST,

whereupon it resets to a logic HIGH.

FUNCTIONAL BLOCK DIAGRAM

VOLTAGE DETECTOR

Output form:

N = Nch Open Drain

C = CMOS Output

Detected Voltage:

Ex: 15 = 1.5V; 60 = 6.0V 1.0% Tol.

Ex: 11 = 1.1V; 60 = 6.0V 2.0% Tol.

Extra Feature Code: Fixed: 0

Tolerance:

1 = 1.0% (custom)

2 = 2.0% (standard)

Temperature: E: – 40°C to + 85°C

Package Type and Pin Count:

CB: 3-Pin SOT-23A*, MB: 3-Pin SOT-89,

ZB: 3-Pin TO-92

Taping Direction:

TR: Standard Taping

RT: Reverse Taping

No Suffix: TO-92 Bulk

* 3-Pin SOT-23A is equivalent to EIAJ SC-59.

ORDERING INFORMATION

PART CODE TC54 V X XX X X X XX XXX

VOUT

TC54VC only

VSS

–

VIN

VREF

TC54VN has open-drain output.

TC54VC has complementary output.

PIN CONFIGURATIONS

132

VIN

VIN VSS

VIN

VSS

VOUT VSS VOUT

VOUT

TC54

*3-Pin SOT-23A 3-Pin SOT-89 3-Pin TO-92

*3-Pin SOT-23A is equivalent to EIAJ SC-59

TC54-13 8/23/99

TC54 Series

VOLTAGE DETECTOR

ELECTRICAL CHARACTERISTICS: TA = 25°C, unless otherwise specified.

Symbol Parameter Test Conditions Min Typ Max Unit

VIN Operating Voltage V–

DET = 0.8 to 6.0V 0.7 10.0 V

ISS Quiescent Current VIN = 2.1V — 1.0 3.0

3.0V 1.3 3.4 µA

4.0V 1.6 3.8

5.0V 2.0 4.2

V–

DET Threshold Voltage (V–

DET)—(V

–

DET)V

x 0.98 x 1.02

VHYST Hysteresis Range (V–

DET)(V

–

DET)(V

–

DET)V

x 0.02 x 0.05 x 0.08

IOUT Output Current VOL = 0.5V VIN = 2.1V — 7.7 — mA

3.0V 10.1

4.0V 11.5

5.0V 13.0

TC54VC Only: VOH = VIN – 2.1V VIN =8.0V – 10.0

TC (V–

DET) Tempco of (V–

DET)– 40°C ≤ TA ≤ 85°C—± 100 ppm/°C

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage VIN ......................................................12V

Output Voltage: CMOS.............(VSS – 0.3) to (VIN + 0.3 )

Open Drain ................ (VSS – 0.3) to 12V

Output Current .........................................................50mA

Power Dissipation: (TA ≤ 70°C)

3-Pin SOT-23A ...............................................240mW

3-Pin SOT-89..................................................400mW

3-Pin TO-92 ....................................................440mW

Operating Temperature..........................– 40°C to + 85°C

Storage Temperature ...........................– 65°C to + 150°C

Soldering Temperature (10 sec) ............................. 300°C

* Static-sensitive device. Unused devices must be stored in conductive

material. Protect devices from static discharge and static fields. Stresses

above those listed under Absolute Maximum Ratings may cause perma-

nent damage to the device. These are stress ratings only and functional

operation of the device at these or any other conditions above those

indicated in the operational sections of the specifications is not implied.

Exposure to Absolute Maximum Rating Conditions for extended periods

may affect device reliability.

Pin No. Symbol Description

OUT Digital output. This output goes low when VIN drops below V–

DET and returns high when VIN

rises above V–

DET + VHYST. (See timing chart).

IN Analog input. This pin is both the power supply input and the voltage to be monitored.

SS Ground terminal.

PIN DESCRIPTION

3TC54-13 8/23/99

TC54 Series

VOLTAGE DETECTOR

TIMING CHART

MARKING

VIN

DETECT VOLTAGE VDET

MINIMUM OPERATING

VOLTAGE

VHYST

VDET

OUTPUT VOLTAGE

RELEASE

VOLTAGE RESET

VOLTAGE

GROUND LEVEL

–

 = output (Nch or CMOS) plus first voltage digit

123456

Nch LMNPRS

CMOS B C D E F H

ex: CMOS 3.x = 

 = first voltage decimal (0-9)

ex: CMOS 3.4 = 

 &  = assembly lot number

,  &  = 54x (fixed)

 = output (C = CMOS, N = Nch)

 = first voltage digit (2-6)

 = first voltage decimal (0-9)

 = extra feature code : fixed : 0

 = detecting accuracy

1 = ± 1.0% (custom), 2 = ± 2.0% (standard)

, ,  &  = assembly lot number

3-Pin SOT-89

3-Pin SOT-23A 3-Pin TO-92

DESCRIPTION OF OPERATION

Refer to the Timing Chart below. In normal steady-state

operation, when VIN > V–

DET, the output will be at a logic high.

In the case of the TC54V, this is an open-drain condition. If

and when the input falls below V–

DET, the output will pull down

(Logic 0) to VSS. Generally, VOUT can pull down to within

0.5V of VSS at rated output current and input voltage. (See

the Electrical Characteristics section).

The output, VOUT, will stay valid until the input voltage

falls below the Minimum Operating Voltage, VIN(MIN), of

0.7V. Below this minimum operating voltage, the output is

undefined. During power-up or anytime VIN has fallen below

VIN (MIN), VOUT will remain undefined until VIN rises above

VIN(MIN), at which time the output will become valid. VOUT

will be in its active low state while VIN(MIN) < VIN < V+

DET.

(V+

DET = V–

DET + VHYST). If and when the input rises above

V+

DET, the output will assume its inactive state. (High for

TC54VC, open-drain for TC54VN).

APPLICATIONS

Refer to TelCom Semiconductor Application Note #2,

Using the TC54 Voltage Detector

TC54-13 8/23/99

TC54 Series

VOLTAGE DETECTOR

TAPING FORMS

Component Taping Orientation for 3-Pin SOT-89

Component Taping Orientation for 3-Pin SOT-23A(EIAJ SC-59) Devices

User Direction of Feed User Direction of Feed

Device

Marking

Device

Marking

PIN 1

Standard Reel Component Orientation

for TR Suffix Device

(Mark Right Side Up)

Reverse Reel Component Orientation

for RT Suffix Device

(Mark Upside Down)

Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size

3-Pin SOT-89 12 mm 8 mm 1000 7 in

Carrier Tape, Reel Size, and Number of Components Per Reel

User Direction of Feed User Direction of Feed

Device

Marking

Device

Marking

PIN 1

Standard Reel Component Orientation

for TR Suffix Device

(Mark Right Side Up)

Reverse Reel Component Orientation

for RT Suffix Device

(Mark Upside Down)

Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size

3-Pin SOT-23A 8 mm 4 mm 3000 7 in

Carrier Tape, Number of Components Per Reel and Reel Size

5TC54-13 8/23/99

TC54 Series

VOLTAGE DETECTOR

TAPING FORMS (Cont.)

Mark

Face

Component Taping Orientation for 3-Pin TO-92 Devices

User Direction of Feed

Cover

Tape

Carrier

Tape

ARK

ACE

ARK

ACE

ARK

ACE

Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size

3-Pin TO-92 18 mm 12.7 mm 1000 14 in

Carrier Tape, Number of Components Per Reel and Reel Size

Standard Reel Component Orientation

for TR Suffix Device Reverse Reel Component Orientation

for RT Suffix Device

TC54-13 8/23/99

TC54 Series

VOLTAGE DETECTOR

TAPING FORMS (Cont.)

Seal

Tape

Back

Tape

Marked

Face

Component Taping Orientation for 3-Pin TO-92 (Cont.)

PACKAGE DIMENSIONS

Dimensions: inches (mm)

3-Pin SOT-23A (EIAJ SC-59)

.071 (1.80)

.055 (1.40)

PIN 1

.118 (3.00)

.098 (2.50)

.020 (0.50)

.012 (0.30)

.075 (1.90)

REF.

.122 (3.10)

.106 (2.70)

.051 (1.30)

.035 (0.90)

.006 (0.15)

.000 (0.00) .022 (0.55)

.014 (0.35)

10° MAX. .010 (0.25)

.004 (0.09)

7TC54-13 8/23/99

TC54 Series

VOLTAGE DETECTOR

.071 (1.80)

.063 (1.60)

.181 (4.60)

.173 (4.39)

.022 (0.56)

.016 (0.41)

.019 (0.48)

.014 (0.36)

PIN 1

.063 (1.60)

.055 (1.40)

.031 (0.79) MIN.

.102 (2.59)

.090 (2.29) .167 (4.24)

.017 (0.43)

.014 (0.36)

.063 (1.60)

.055 (1.40)

3-Pin SOT-89

PACKAGE DIMENSIONS (Cont.)

3-Pin TO-92

.105 (2.67)

.095 (2.41)

.018 (0.46)

.015 (0.38)

.135

(3.43)

MIN.

.500

(12.70)

MIN.

.210 (5.33)

.170 (4.32)

.205 (5.21)

.175 (4.45)

.165

(4.19)

.125 (3.18)

.105 (2.67)

.080 (2.03)

.055 (1.40)

.045 (1.14) .018 (0.46)

.015 (0.38)

Dimensions: inches (mm)

TC54-13 8/23/99

TC54 Series

VOLTAGE DETECTOR

Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by

update s. It is y our re sponsibilit y to en sure that your appli cation m eets with y our sp ecifications . No re presen tation or warra nty is given and no liability is

assumed by M icrochip Technol ogy In corporate d w ith re spect t o the accur acy or use of such informat ion, or infringem ent of paten ts or ot he r in te lle ct ual

property rights arising from such use or otherwise. Use of Microchipí s products as critical components in life support systems is not authorized ex ce pt wi th

express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, except as maybe explicitly expressed herein, under any intellec-

tual prop erty rights. The Micro chip logo and name are reg istered tradema rks of Microchip Technology In c. in the U.S.A. and oth er countries. All rights

reserved. All other trademarks mentioned herein are the property of their respective companies.

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