TC54xxxx TelCom Semiconductor, TC54xxxx Datasheet

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TC54xxxx

Manufacturer Part Number
TC54xxxx
Description
VOLTAGE DETECTOR
Manufacturer
TelCom Semiconductor
Datasheet
VOLTAGE DETECTOR
FEATURES
APPLICATIONS
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATIONS
*SOT-23A-3 is equivalent to EIAJ (SC-59)
V IN
V OUT
TC54VN has open-drain output.
TC54VC has complementary output.
2
*SOT-23A-3
Precise Detection Thresholds .... Standard
Small Packages ........... SOT-23A-3, SOT-89, TO-92
Low Current Drain ..................................... Typ. 1 A
Wide Detection Range .......................... 2.1V to 6.0V
Wide Operating Voltage Range ............ 1.5V to 10V
Battery Voltage Monitoring
Microprocessor Reset
System Brownout Protection
Switching Circuit in Battery Backup
Level Discriminator
1
TELCOM SEMICONDUCTOR, INC.
V REF
TC54
V IN
2
V SS
3
+
V OUT
1
SOT-89-3
V IN
2
TC54
V SS
3
Custom
TO-92
TC54VC only
V OUT
V SS
1
3
TC54
1
1.0%
2.0%
2
3
GENERAL DESCRIPTION
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 2.1V to 6.0V,
in 0.1V steps.
precision reference, laser-trimmed divider, hysteresis circuit
and output driver. The TC54 is available with either an open-
drain or complementary output stage.
logic HIGH state as long as V
specified threshold voltage (V
V
LOW until V
whereupon it resets to a logic HIGH.
ORDERING INFORMATION
PART CODE TC54 V X XX X X X XX XXX
Output form:
Detected Voltage:
Extra Feature Code: Fixed: 0
Tolerance:
Temperature: E: – 40 C to + 85 C
Package Type and Pin Count:
Taping Direction:
*SOT-23A-3 is equivalent to EIAJ (SC-59).
DET
The TC54 Series are CMOS voltage detectors, suited
The device includes a comparator, low-current high-
In operation, the TC54's output (V
N = Nch Open Drain
C = CMOS Output
Ex: 21 = 2.1V; 60 = 6.0V
1 =
2 =
CB: SOT-23A-3*, MB: SOT-89-3, ZB: TO-92-3
Standard Taping
Reverse Taping
No suffix: TO-92 Bulk
, the output is driven to a logic LOW. V
1.0% (custom)
2.0% (standard)
IN
rises above V
DET
DET
IN
). When V
by an amount V
is greater than the
OUT
) remains in the
IN
OUT
falls below
TC54-10 11/8/96
TC54
remains
HYST
4-279
,
1
2
3
4
5
6
7
8

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TC54xxxx Summary of contents

Page 1

... FUNCTIONAL BLOCK DIAGRAM – REF TC54VN has open-drain output. TC54VC has complementary output. TELCOM SEMICONDUCTOR, INC. GENERAL DESCRIPTION 2.0% The TC54 Series are CMOS voltage detectors, suited Custom 1.0% especially for battery-powered applications because of their extremely low 1 A operating current and small surface- mount packaging ...

Page 2

... V IN DET Ground terminal. VOLTAGE DETECTOR Min Typ 1.5 1.0 1.3 1.6 2.0 – DET x 0.98 x 1.02 – – DET DET x 0.02 x 0.05 x 0.08 = 2.1V 7.7 3.0V 10.1 4.0V 11.5 5.0V 13.0 = 8.0V – 10.0 100 – drops below V and returns IN DET . (See timing chart). HYST TELCOM SEMICONDUCTOR, INC. Max Unit 10.0 V 3.0 3.4 A 3.8 4.2 – DET – DET mA ppm/ C ...

Page 3

... V DET DET + , the output will assume its inactive state. (High for V DET TC54VC, open-drain for TC54VN). APPLICATIONS Refer to TelCom Semiconductor Application Note #2, Using the TC54 Voltage Detector . SOT-89-3 , & = 54_ (fixed) = output (C = CMOS Nch) = first voltage digit (2-6) = first voltage decimal (0-9) ...

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