SC431LCSK-.5TRT Semtech, SC431LCSK-.5TRT Datasheet

IC, ADJ SHUNT REG, 1.24V, 0.5%, 3-SOT-23

SC431LCSK-.5TRT

Manufacturer Part Number
SC431LCSK-.5TRT
Description
IC, ADJ SHUNT REG, 1.24V, 0.5%, 3-SOT-23
Manufacturer
Semtech
Datasheet

Specifications of SC431LCSK-.5TRT

Topology
Shunt, Programmable
Reference Voltage
1.24V
Reference Voltage Tolerance
6mV
Voltage Reference Case Style
SOT-23
No. Of Pins
3
Operating Temperature Range
0°C To +70°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SC431LCSK-.5TRT
Manufacturer:
SEMTECH/美国升特
Quantity:
20 000
Company:
Part Number:
SC431LCSK-.5TRT
Quantity:
1 440
The SC431L is a three terminal adjustable shunt
regulator with thermal stability guaranteed over
temperature. The output voltage can be adjusted to any
value from 1.24V (V
resistors. The SC431L has a typical dynamic output
impedance of 0.05 . Active output circuitry provides a
very sharp turn on characteristic, making the SC431L an
excellent replacement for zener diodes.
The SC431L shunt regulator is available with four volt-
age tolerances (0.25%, 0.5%, 1.0% and 2.0%), two
operating temperature ranges (commercial and indus-
trial) and two package options (SOT-23-3 and SOT-23-
5). This allows the designer the opportunity to select the
optimum combination of cost and performance for their
application.
Revision: May 16, 2008
POWER MANAGEMENT
Description
Typical Application Circuit
REF
) to 20V with two external
(1)(2)
1
Notes:
1) Set V
2) Choose the value for R as follows:
cathode current, I
operating current (100µA) at V
not exceed 100mA under all load conditions, and the
instantaneous turn-on value for I
150mA. Both of the following conditions must be met:
R
R
Features
Applications
V
OUT
min
min
Low voltage operation (down to 1.24V)
Wide operating current range 100µA to 100mA
Low dynamic output impedance 0.05
Trimmed bandgap design ± 0.25%
Upgrade for TLV431A
SOT-23-3 and SOT-23-5 packages. Also available in
Lead-free package, fully WEEE and RoHS 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
150
I
V
V
OUT
REF
IN
V
OUT
(max)
IN
mA
(min)
(max)
1
according to the following equation:
100
R
R
(to limit instantaneous turn-on I
V
1
2
OUT
Low Voltage Adjustable
mA
I
Z
REF
, is greater than the minimum
operating conditions)
(to limit I
R
1
Shunt Regulator
IN(MIN)
Z
under normal
.
Z
does not exceed
www.semtech.com
SC431L
typ.
Z
)
Z
does

Related parts for SC431LCSK-.5TRT

SC431LCSK-.5TRT Summary of contents

Page 1

... I 150mA. Both of the following conditions must be met (max) (to limit instantaneous turn- min 150 (max) OUT R (to limit I min I 100 mA OUT (min) operating conditions) 1 SC431L typ. . does Z does not exceed under normal Z www.semtech.com ...

Page 2

... POWER MANAGEMENT Absolute Maximum Ratings ° Electrical Characteristics Unless specified:T = 25°C. Values in bold apply over full operating ambient temperature range REF 2008 Semtech Corp SC431L www.semtech.com ° ° C ° C ° C ° µ µ µ ...

Page 3

... Unless specified:T = 25°C. Values in bold apply over full operating ambient temperature range REF Notes: (1) See Test Circuit 1 on page 4. (2) See Test Circuit 2 on page 4. (3) See Test Circuit 3 on page 4. Recommended Operating Conditions 2008 Semtech Corp < µ < µ µ SC431L ...

Page 4

... POWER MANAGEMENT Test Circuits Test Circuit REF Pin Configurations SOT-23-3 (Top View) Block Diagram 2008 Semtech Corp. Test Circuit 2 V > REF SOT-23-5 (Top View) Symbol 4 SC431L Test Circuit 3 Off-State www.semtech.com ...

Page 5

... Only available in tape and reel packaging. A reel contains 3000 devices. (2) “T” at end of part number indicates “lead free”. This product is fully WEEE and RoHS compliant. Marking Information SOT-23-3 (Top View only +150° SOT-23-3 (Top View only) (-40 to +150° 2008 Semtech Corp ...

Page 6

... Ratio of Delta Reference Voltage to Delta Cathode Voltage vs. Junction Temperature 1 10mA Z 1 16V REF 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 -50 - (°C) J 2008 Semtech Corp. 150 100 50 0 -50 -100 -150 0.5 1 1.5 -1.5 150 I = 10mA Z 125 100 I = 60µ -50 75 100 ...

Page 7

... Cathode Current and Load Capacitance 3 25°C A 3.0 Stable 2.5 2.0 1.5 1.0 0.5 0.0 0.001 0.01 0.1 C (µF) L 2008 Semtech Corp. 100 0.1 0.01 75 100 125 150 1.E+03 Test Circuit - Small-Signal Gain and Phase -180 -225 -270 -315 -360 -405 ...

Page 8

... Note: if the SC431L is located right at the load, so the load decoupling capacitor is directly across it, then this capacitor will have to be 1nF or 10µF. 2008 Semtech Corp. 8 SC431L www.semtech.com ...

Page 9

... Z Y 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. Note: (1) Grid placement courtyard elements (4mm x 4mm) in accordance with the international grid detailed in IEC Publication 97. 2008 Semtech Corp DIM ...

Page 10

... DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. Land Pattern - SOT-23-5 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. Contact Information Phone: (805)498-2111 FAX (805)498-3804 2008 Semtech Corp. A DIM ...

Related keywords