ADJUSTABLE SHUNT REGULATOR
Description
The H431 series are three-terminal adjustable regulators with guarante-ed
thermal stability over applicable temperature ranges. The output voltage
may be set to any value between V REF (approximately 2.495 volts) and 36
volts with two external resistors. These devices have a typical dynamic
output impedance of 0.2?. Active output circuitry provides a very sharp
turn-on characteristic, making these devices excellent replacement for
zener diodes in many applications.
Features
? Programmable output voltage
? Temperature coefficient is 50ppm/o C typical
? Temperature compensated for operation over full temperature range
? Low output noise voltage
? Fast turn on response
Ordering Information
Package V REF: 2.495±2% V REF: 2.495±1% V REF: 2.495±0.5%
SOT-23 H431AN H431BN H431CN
SOT-89 H431AM H431BM H431CM
TO-92 H431AA H431BA H431CA
SO-8 H431AS H431BS H431CS Absolute Maximum Ratings
(Operating temperature range applies unless otherwise specified)
Characteristics Symbol Value Unit Cathode Voltage V KA 36 V Cathode Current Range (Continuous) I K -100~+150 mA Reference Input Current Range I REF 0.05~+10 mA
SOT-23 280
SOT-89 770
mW
Power Dissipation P D
TO-92 770
SO-8 770
Operating Temperature Range T opr -40~+150 o C
Storage Temperature Range T stg -65~+150 o C
Operating Conditions
Unit Characteristics Symbol
Max.
Min.
Cathode Voltage V KA V REF 36 V
Cathode Current Range (Continuous) I K 1 100 mA
Characteristics Curve
SOT-23 Dimension
SOT-89 Dimension
TO-92 Dimension
SO-8 Dimension
Important Notice:
? All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of HSMC.
? HSMC reserves the right to make changes to its products without notice.
?HSMC semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems.
? HSMC assumes no liability for any consequence of customer product design, infringement of patents, or application assistance. Head Office And Factory:
?Head Office (Hi-Sincerity Microelectronics Corp.): 10F.,No. 61, Sec. 2, Chung-Shan N. Rd. Taipei Taiwan R.O.C.
Tel: 886-2-25212056 Fax: 886-2-25632712, 25368454
?Factory 1: No. 38, Kuang Fu S. Rd., Fu-Kou Hsin-Chu Industrial Park Hsin-Chu Taiwan. R.O.C
Tel: 886-3-5983621~5 Fax: 886-3-5982931
Soldering Methods for HSMC’s Products
1. Storage environment: Temperature=10o C~35o C Humidity=65%±15%
2. Reflow soldering of surface-mount devices
Profile Feature Sn-Pb Eutectic Assembly Pb-Free Assembly Average ramp-up rate (T L to T P) <3o C/sec <3o C/sec Preheat
- Temperature Min (Ts min) - Temperature Max (Ts max) - Time (min to max) (ts)
100o C
150o C
60~120 sec
150o C
200o C
60~180 sec
Tsmax to T L
- Ramp-up Rate <3o C/sec <3o C/sec Time maintained above:
- Temperature (T L) - Time (t L)
183o C
60~150 sec
217o C
60~150 sec
Peak Temperature (T P) 240o C +0/-5o C 260o C +0/-5o C
Time within 5o C of actual Peak
Temperature (t P)
10~30 sec 20~40 sec
Ramp-down Rate <6o C/sec <6o C/sec
Time 25o C to Peak Temperature <6 minutes <8 minutes
3. Flow (wave) soldering (solder dipping)
Products Peak temperature Dipping time
Pb devices. 245o C ±5o C 10sec
±1sec
Pb-Free devices. 260o C ±5o C 10sec
±1sec