SL431XM_1中文资料

SL431xM
S e m i c o n d u c t o r
Programmable Voltage Reference Description
The SL431 series are 3-terminal precision shunt regulators that are programmable over a wide voltage range of 2.495V to 36V with ±0.5%, ±1.0% tolerance. The SL431 series have a low dynamic impedance of 0.15Ω. These features make the SL431 series an excellent replacement for zener diodes in numerous applications circuits that require a precision reference voltage.
Features
• Programmable output voltage from 2.495V to 36V
• V oltage reference tolerance : ±0.5%, ±1.0%
• Cathode current capability of 1mA to 100mA
Ordering Information
Type NO. Marking Package Code
SL431xM SL431□TO-92M
□: Grade => A:±1% , B:±0.5%
Outline Dimensions ( Unit : mm )
Absolute maximum ratings [Ta=25℃]
Characteristic
Symbol Rating Unit
Cathode to Anode voltage V KA 37 V
Cathode current I K
150 mA
Reference input current I ref 10 mA Power Dissipation P D 400 mW
Junction Temperature T J 150 ℃ Operating temperature range T opr -40 ~ +85 ℃ Storage temperature range
T stg
-55 ~ +150
℃
Recommended operating conditions
Rating
Characteristic Symbol Min. Max.
Unit
Cathode to Anode voltage V KA
V ref 36 V
Cathode current
I K 1 100 mA
=
1ref 2
1
ref KA R ×I +)R R +1(×V =V Note.
T ∆)
10×)℃25=T (V (
=℃ppm (V αa
a ref ref
ref V αcan be positive or negative depending on whether V ref Min or V ref Max occurs at the lower ambient temperature, refer to
Fig. 8
Example : △V ref = 30mV and the slope is positive, △V ref @ 25℃ = 2.495V △Ta = 125℃
3. The dynamic impedance Z KA is defined as:
K
KA
KA I ∆V ∆=
Ζ When the device is operating with two external resistors, R1 and R2, (refer to Fig.2) the total dynamic impedance of the circuit is given by:
R R +
1(×Ζ=Ζ2
1
KA 'KA Fig. 1 Test circuit for V KA =V ref
Fig. 2 Test circuit for V KA >V ref
Fig. 3 Test circuit for I K(off)
ref Min ℃
/ppm 96=125
10×)495.203
.0(
=)℃ppm (V α6
ref
Electrical Characteristics Curves (Continue)
C a t h o d e c u r r e n t I K [m A ]
0.04.0
1.03.0-0.2
2.0Fig.4 I K vs V KA (1)
Fig.5 I K vs V KA (2)
Fig.6 I K(off) vs V KA
325-100
2 C a t h o d e c u r r e n t I K [m A ]
0 Cathode V oltage V KA [V] 1 -1 -2 -25150Cathode V oltage V KA [V]Fig.7 ΔV ref /ΔV KA vs T a
-75-50I Fig.8 V ref vs T a
Fig.9 P D vs T a
Cathode V oltage V KA [V]
0.050
0.51.51.00
40 20 2.0O f f -s t a t e c a t h o d e c u r r e n t I K (o f f ) [µA ]
30 10 50
0.0-25
-0.2
75
25
100
-0.1
-0.4
-0.3
-0.5
-50
R a t i o o f d e l t a r e f e r e n c e i n p u t v o l t a g e t o d e l t a
c a t h o
d
e v o l t a g ΔV r e
f /ΔV K A [m V /V ]
Ambient Temperature T a [˚C]
Electrical Characteristics Curves
Fig.10 Pulse Response
7
10
4-1
8 I n p u t a n d o u t p u t v o l t
a g e – V
4
t – Time [μs ]
6 2
20 1 356Ta=25˚C
Fig.11 Test circuit for Fig. 10
Input
Output
A
B
Fig.12 Pulse Response (Magnify A of Fig.10)
Fig.13 Pulse Response (Magnify B of Fig.10)
7
54-1 4 I n p u t a n d o u t p u t v o l t a g e – V
2 t – Time [μs ]
3 1 0
20 1 3567
5
4-1
4I n p u t a n d o u t p u t v o l t a g e – V
2 t – Time [μs ]
3 1 0
201356Output
Input
Input
Output
Ta=25˚C
Ta=25˚C
The AUK Corp. products are intended for the use as components in general electronic equipment (Office and communication equipment, measuring equipment, home appliance, etc.).
Please make sure that you consult with us before you use these AUK Corp. products in equipments which require high quality and / or reliability, and in equipments which could have major impact to the welfare of human life(atomic energy control, airplane, spaceship, transportation, combustion control, all types of safety device, etc.). AUK Corp. cannot accept liability to any damage which may occur in case these AUK Corp. products were used in the mentioned equipments without prior consultation with AUK Corp..
Specifications mentioned in this publication are subject to change without notice.。