CM431AGACN N/A, CM431AGACN Datasheet

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CM431AGACN

Manufacturer Part Number
CM431AGACN
Description
Manufacturer
N/A
Datasheet
1.CM431AGACN.pdf (14 pages)
GENERAL DESCRIPTION
The CM431A is a three-terminal adjustable shunt voltage
regulator with specified thermal stability and pin-to-pin compatible
with the earlier 431 series. The output voltage can be adjusted to
any value between V
The CM431A offers low output impedance for improved load
regulation with a typical output impedance of 200mΩ. Because
of the active output circuitry, the CM431A can replace the zener
diodes in applications such as switching power supplies, OVP
crowbar circuits, references for A/D, D/A converters with
improved turn-on characteristics.
PIN CONFIGURATION
2004/08/27
Front View
1
SOT-23-5
5
1
Top View
TO-92
2
2
3
REF
Champion Microelectronic Corporation
4
3
and 18V by using two external resistors.
SOT-23-3
Top View
1
3
2
L
Top View
1
SOT-89
OW
2
V
3
OLTAGE
Pin 1
Pin 2
Pin 3
Suffix “X”: Grade “A”, “B”, “C”, “D”, or “E”
FEATURES
APPLICATIONS
Initial voltage reference accuracy of 1.0%.
Sink current capability from 1mA to 100mA
Typical output dynamic impedance less than 200mΩ;
Adjustable output voltage from V
Available in SOT-23, SOT-89, TO-92, & SOP-8
Low output noise
Typical equivalent full range temperature coefficient of
30ppm/
Voltage Reference
Precision shunt regulator
High current shunt regulator
PWM down converter with reference
Voltage monitor
CM431AXCM233 CM431AXCM2R3
REF
CATHODE
ANODE
A
DJUSTABLE
O
C
1
2
3
4
CATHODE
REF
ANODE
S
C ATH O D E
N C
N C
N C
Top View
HUNT
SOP-8
REF
AN O D E
to 18V
R EF
R
N C
N C
CM431A
EGULATOR
Page 1
8
7
6
5

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CM431AGACN Summary of contents

Page 1

GENERAL DESCRIPTION The CM431A is a three-terminal adjustable shunt voltage regulator with specified thermal stability and pin-to-pin compatible with the earlier 431 series. The output voltage can be adjusted to any value between V and 18V by using two external ...

Page 2

TYPICAL APPLICATION Note: R should b provide cathode current ≥ 1mA 5V Precision Regulator 2004/08/27 Champion Microelectronic Corporation OLTAGE BLOCK DIAGRAM 27.5K + REF 0. 27.5K 0.1% ...

Page 3

... CM431AGACM235* 1 （ ） SOT-89 CM431AGACM89* 2 （ ） TO-92 CM431AGACN* SOP-8 CM431AGACS* Notes： （1） Add suffix ″TR″for Tape & Reel. （2） Add suffix ″TA″for Tape Ammo. *Note: Add （3） suffix “G” for Pb Free Product 2004/08/27 Champion Microelectronic Corporation ...

Page 4

ABSOLUTE MAXIMUM RATINGS Cathode to Anode Voltage (V ) (Note 2) KA Continuous Cathode Current ( Reference Input Current (I ) REF Maximum junction temperature range, T Storage temperature range Lead temperature (soldiering, 10 seconds) Note 1: Exceeding ...

Page 5

ELECTRICAL CHARACTERISTICS Unless otherwise specified, these specifications apply over the operating ambient temperatures with T Parameter Symbol Reference Input Voltage Reference Drift Voltage Ratio, Ref to Cathode (note 4) Reference Input Current Minimum Operating Current Off-State Cathode Current Dynamic Impedance ...

Page 6

PARAMETER MEASUREMENT INFORMATION Input V RE Figure 1. Test Circuit for V 2004/08/27 Champion Microelectronic Corporation OLTAGE V Input R1/R2 Figure 2. Test Circuit for REF Input V ...

Page 7

TYPICAL CHARACTERISTICS Cathode Current vs. Cathode Voltage Ref. Input Voltage vs. Free-Air Temperature 2004/08/27 Champion Microelectronic Corporation OLTAGE DJUSTABLE Cathode Current vs. Cathode Voltage Ref. Input Current vs. Free-Air Temperature CM431A S R HUNT EGULATOR Page ...

Page 8

APPLICATION INFORMATION R* V BATT R1 0.1% V REF R2 0. R1/R2) × Note: R should provide 1mA cathode current to the CM431A of minimum V BATT Figure 4. Shunt Regulator V BATT R1 ...

Page 9

APPLICATION INFORMATION (continued) V LM317 BATT Adjust Ω 8.2K CM431A Figure 8.Precision 5V, 1.5A Regulator V BATT IN OUT 78L05 Common CM431A = (1 + R1/R2) × REF Min REF Figure ...

Page 10

PACKAGE DIMENSION 2004/08/27 Champion Microelectronic Corporation OLTAGE TO-92 L SOT-23-3 b1 With Plating b Base Metal Section B-B L See Section B-B L1 CM431A S R DJUSTABLE HUNT ...

Page 11

PACKAGE DIMENSION 2004/08/27 Champion Microelectronic Corporation OLTAGE (CONTINUED) SOT-23-5 b1 With Plating b Base Metal Section B See Section B-B SOT- φ ...

Page 12

PACKAGE DIMENSION PIN 1 ID 2004/08/27 Champion Microelectronic Corporation OLTAGE (CONTINUED) 8-PIN SOP (S08) θ CM431A DJUSTABLE HUNT EGULATOR Page 12 ...

Page 13

NUMBERING SCHEME Ordering Number: CM431AXYZ (note1) Ordering Number: CM431AGXYZ (note2) note1 Suffix for Reference Voltage Tolerance (note Suffix for Temperature Range (note Suffix for Package Type (note 5) note2 Suffix ...

Page 14

Champion Microelectronic Corporation (CMC) reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing ...

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