SC431CSK-2TRT Semtech, SC431CSK-2TRT Datasheet

IC ADJ SHUNT REG SOT-23-3

SC431CSK-2TRT

Manufacturer Part Number
SC431CSK-2TRT
Description
IC ADJ SHUNT REG SOT-23-3
Manufacturer
Semtech
Datasheet

Specifications of SC431CSK-2TRT

Reference Type
Shunt, Adjustable
Voltage - Output
2.5 ~ 30 V
Tolerance
±2%
Number Of Channels
1
Current - Cathode
130µA
Current - Output
150mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-3, TO-236-3, Micro3™, SSD3, SST3
Fixed / Adjust / Prog
Adjust
Output Voltage (max)
2.495 to 30V
Reference Voltage Accuracy (max)
2
Input Voltage (max)
31V
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
3
Package Type
SOT-23
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Input
-
Temperature Coefficient
-
Current - Quiescent
-
Lead Free Status / Rohs Status
Compliant
Other names
SC431CSK-2TR
The SC431 is a three terminal adjustable shunt
regulator with thermal stability guaranteed over
temperature. The output voltage can be adjusted to any
value from 2.5V (V
resistors. The SC431 has a typical dynamic output
impedance of 0.25 . Active output circuitry provides a
very sharp turn on characteristic, making the SC431 an
excellent replacement for zener diodes.
The SC431 shunt regulator is available with four
voltage tolerances (0.5%, 1.0% and 2.0% over T
to +85
package
allows the designer the opportunity to select the
optimum combination of cost and performance for their
application.
Revision: April 23, 2008
POWER MANAGEMENT
Description
Typical Application Circuit
°
C and 0.5% over T
options
REF
(SOT-23-3
) to 30V with two external
A
= -40
(1)(2)
°
C to +125
and
SO-8).
°
C) and two
A
= -40
This
°
C
1
Notes:
1) Set V
2) Choose the value for R as follows:
cathode current, I
operating current (130µA) at V
not exceed 150mA under all load conditions, and the
instantaneous turn-on value for I
200mA. Both of the following conditions must be met:
R
R
Features
Applications
V
OUT
min
min
Wide operating current range 130µA to 150mA
Low dynamic output impedance 0.25
Trimmed bandgap design + 0.5%
Alternate for TL1431, TL431, LM431 & AS431
Industrial temperature range
Available in SOT-23-3 and SO-8 packages.
compliant.
Linear Regulators
Adjustable Supplies
Switching Power Supplies
Battery Operated Computers
Instrumentation
Computer Disk Drives
The maximum limit for R should be such that the
The minimum limit for R should be such that I
Also available in Lead-free, fully WEEE and RoHS
I
200
V
V
OUT
V
REF
IN
IN
OUT
(max)
(min)
mA
(max)
Adjustable Shunt Regulator
1
according to the following equation:
150
R
R
(to limit instantaneous turn-on I
V
1
2
OUT
mA
I
Z
REF
, is greater than the minimum
(to limit I
operating conditions)
R
1
IN(MIN)
Z
under normal
.
Z
does not exceed
www.semtech.com
SC431
typ.
Z
)
Z
does

Related parts for SC431CSK-2TRT

SC431CSK-2TRT Summary of contents

Page 1

... Both of the following conditions must be met min 200 min I OUT 1 Adjustable Shunt Regulator according to the following equation REF greater than the minimum Z . IN(MIN) does not exceed Z (max) (to limit instantaneous turn- (max) OUT (to limit I under normal 150 mA Z (min) operating conditions) www.semtech.com SC431 typ. does ...

Page 2

... Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied ° Electrical Characteristics Unless specified:T = 25°C. Values in bold apply over full operating ambient temperature range REF 2008 Semtech Corp < µ www.semtech.com SC431 ° ° C ° C ° C ° ...

Page 3

... Unless specified:T = 25°C. Values in bold apply over full operating ambient temperature range Notes: (1) See Test Circuit 1 below. (2) See Test Circuit 2 below. (3) See Test Circuit 3 below. Test Circuits Test Circuit REF Recommended Operating Conditions 2008 Semtech Corp REF < Test Circuit 2 V > REF ...

Page 4

... Notes: (1) Only available in tape and reel packaging. A reel contains 3000 devices. (2) Only available in tape and reel packaging. A reel contains 2500 devices. (3) “T” at end of part number indicates “lead free”. This product is fully WEEE and RoHS compliant. 2008 Semtech Corp. Symbol ...

Page 5

... POWER MANAGEMENT Marking Information SOT-23-3 (Top View 2008 Semtech Corp. SO-8 (Top View) SC 431CS yyww SO-8 (Bottom View) xxxxx yyww = Datecode (Example: 0008) xxxxx = Semtech Lot # (Example: 00101) 5 SC431 www.semtech.com ...

Page 6

... I = 10mA Z 2.510 2.505 2.500 2.495 2.490 2.485 -50 - (°C) J Ratio of Delta Reference Voltage to Delta Cathode Voltage vs. Junction Temperature 0 10mA 30V Z 0.4 0.3 0.2 0.1 0 -50 - (°C) J 2008 Semtech Corp. 150 100 50 0 -50 -100 -150 100 I = 10mA 10k 100 125 150 -50 100 0.1 ...

Page 7

... I = 10mA 25° 0.1 0.01 1.0E+03 1.0E+04 1.0E+05 f (Hz) Stability Boundary Condition For Shunt Regulation vs. Cathode Current and Load Capacitance 2008 Semtech Corp. Test Circuit - Small-Signal Gain and Phase -180 I = 10mA Z -225 T = 25°C A -270 -315 -360 -405 -450 -495 -540 ...

Page 8

... DATUMS DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS 3. OR GATE BURRS. Land Pattern - SOT-23 NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. REFERENCE IPC-SM-782A. 2. 2008 Semtech Corp DIM ...

Page 9

... Land Pattern - SO-8 X (C) P NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. 2. REFERENCE IPC-SM-782A, RLP NO. 300A. Contact Information Phone: (805)498-2111 FAX (805)498-3804 2008 Semtech Corp. DIMENSIONS INCHES A DIM MIN NOM .053 N ...

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