Sanyo L5431 Specifications
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
Monolithic Linear IC
High-Precision V ariable Shunt
Voltage Regulator
Ordering number:ENN2173B
L5431
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
5.0
4.0
0.5
0.6
2.0
14.0
5.0
0.45
0.45
4.0
0.44
1.3
1.3
123
Overview
The L5431 is a high-precision variable shunt voltage regulator IC whose output voltage can be set to a value from
approximately 2.5V to 36V by using external resistors.
Because of low output resistance and fast pulse response,
the L5431 can be most suitably used as high-precision volt-
age reference, high-speed comparator, or zener diode.
Features
• Excellent temperature characteristic of Vref :
50ppm/°C (typ)
• Output voltage settable : Approximately 2.5V to 36V.
• Output flow-in current range : 1mA to 100mA
• Low dynamic resistance : 0.15Ω (typ)
• Fast response.
• Low output noise voltage.
• Small-sized TO-92.
Specifications
Maximum Ratings at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
deilppAegatloVmumixaM
edonAdnaedohtaCssorca
tnerruCedohtaCI
tnerruCtupnIniPegatloVecnerefeRferI 01+ot50.0–Am
noitapissiDrewoPelbawollAxamdP 057Wm
erutarepmeTgnitarepOrpoT 58+ot02–
erutarepmeTegarotSgtsT 051+ot56–
V
xamedonaotdecnerefeR 73V
AK
xam 051+ot001–Am
K
Ta≤25˚C
Package Dimensions
unit:mm
3101
[L5431]
1 : Reference voltage
2 : Anode
3 : Cathode
JEDEC : TO-92
EIAJ : SC-43
SANYO : NP
˚C
˚C
Recommended Operating Conditions at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
edonAdnaedohtaCssorcadeilppAegatloVV
tnerruCedohtaCI
AK
K
etatsdezilibatS 001ot1Am
11200TH (KT)/O2894HK/8220TA/7237TA, TS No.2173–1/3
63otferVV
Electrical Characteristics at Ta = 25˚C
retemaraPlobmySsnoitidnoC
egatloVecnerefeRferVVAKI,ferV=
erutarepmeThtiwegnahCegatloVecnerefeR
)1etoN(
VotoitaRegnahCferV
AK
)1etoN(erutarepmeThtiw
tnerruCedohtaCmuminiMI
tnerruCedohtaCegatS-FFOI
)2etoN(ecnatsiseRcimanyDZ|AK|VAKf,ferV= ≤ I,zHk1
∆ )aT(ferV
egnahCtnerruCtupnIniPegatloVecnerefeR
∆ )aT(ferI
Equivalent Circuit Diagram
∆ ferV
∆V
L5431
K
VKA=Vref, IK=10mA, Ta=0 to +70°C : Fig.1
I
,Am01= ∆V
K
I
AK
K
IKA=10mA, R1=10kΩ, R2=∞, Ta=0 to +70°C : Fig.2
V
NIMK
AK
V
ffoK
AK
,Am01= ∆V
AK
AK
1.giF:Am01=044259420552Vm
2.giF:ferVotV01=4.1–7.2–V/Vm
2.giF:V01otV63=0.1–0.2–V/Vm
1giF:ebaliavanoitaluger,ferV=4.01Am
3.giF:0=ferV,V63=1.01Aµ
K
sgnitaR
nimpytxam
871Vm
24Aµ
1.giF:Am001ot1=51.05.0
tinU
Ω
Input Voltage Input Voltage Input Voltage
Note1 : ∆Vref (Ta) is defined by using Vref max and Vref min as follows :
∆Vref (Ta)=Vref max – Vref min
Note2 : The dynamic resistance is defined as follows :
∆V
| ∆ZKA| =
∆I
KA
K
No.2173–2/3
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