AUK SL432SF

SL432xSF
Semiconductor
Programmable Voltage Reference
Description
The SL432 series are 3-terminal precision shunt regulators that are programmable over a wide voltage range of
1.24V to 16V with ±1.0%, ±2.0% tolerance. The SL432 series have a low dynamic impedance of 0.25Ω. These
features make the SL432 series an excellent replacement for zener diodes in numerous applications circuits that
require a precision reference voltage.
Features
• Programmable output voltage from 1.24V to 16V
• Voltage reference tolerance : ±1.0%, ±2.0%
• Sink current capability of 80 ㎂ to 30 ㎃
Ordering Information
Type NO.
Marking
Package Code
SL432xSF
42□
SOT-23F
□: Grade => 3:±2% , A:±1%
Outline Dimensions ( Unit : mm )
Symbol
2.30~2.50
1.50~1.70
1.90 Typ.
3
Functional block diagram
0.45 Max.
2
Cathode(K)
Reference(R)
+
0.80~1.00
-
VREF =1.24V
Anode(A)
PIN Connections
1. Reference
2. Cathode
3. Anode
0.20 Max.
0.10 Max.
2.80~3.00
1
KSI-2015-005
1
SL432xSF
Absolute maximum ratings
[Ta=25℃]
Characteristic
Symbol
Rating
Unit
VKA
18
V
Cathode Current
IK
30
mA
Reference Input Current
Iref
3
mA
Power Dissipation
PD*
350
mW
Junction Temperature
TJ
150
℃
Operating Temperature Range
Topr
-40 ~ +85
℃
Storage Temperature Range
Tstg
-55 ~ +150
℃
Cathode to Anode voltage
* With PCB(8×8mm copper area) at glass epoxy board(t=1.7mm, area : 20×20mm)
Recommended operating conditions
Characteristic
Symbol
Rating
Min.
Max.
Unit
Cathode voltage
VKA
Vref
16
V
Cathode current
IK
0.1
30
mA
Electrical Characteristics (Ta=25℃, unless otherwise noted.)
Characteristic
Reference voltage (Fig.1)
Symbol
Condition
Min.
SL432ASF
1.228
SL432SF
1.215
Typ.
1.252
Unit
Vref
VKA=Vref, IK=10mA
∆Vref
VKA=Vref, IK=10mA
@ -40˚C ≤ Ta ≤ 85˚C
-
10
20
mV
IK=10mA
Vref ≤ VKA ≤ 16V
-
-1.0
-2.7
mV/V
Iref
IK=10mA
R1=10KΩ, R2=∞
-
0.15
0.3
µΑ
Reference input current
deviation over temperature
(Fig.2, Note 1,2)
∆Iref
IK=10mA
R1=10KΩ, R2=∞
-
0.04
0.08
µΑ
Minimum cathode current
for Regulation
IK(MIN)
VKA=Vref
-
55
80
µΑ
Off-state cathode current
(Fig.3)
IK(off)
VKA=16V, Vref=0V
-
5
50
nA
Dynamic impedance
(Fig.1, Note3)
ZKA
VKA=Vref, f ≤ 1.0KHz
0.1mA ≤ IK ≤ 30mA
-
0.25
0.4
Ω
Reference input voltage
deviation over temperature
(Fig.1, Note1,2)
Ratio of delta reference input
voltage to delta cathode
voltage (Fig.2)
Reference current (Fig,2)
∆Vref
∆VKA
KSI-2015-005
1.240
Max.
1.265
V
2
SL432xSF
Fig. 2 Test circuit for VKA>Vref
Fig. 1 Test circuit for VKA=Vref
Input
Input
VKA
IK
VKA
Fig. 3 Test circuit for IK(off)
Input
IK(off)
IK
R1
VKA
Iref
R2
Vref
V ref = V ref × (1 +
R1
) + I ref × R 1
R2
Note.
1. Ambient temperature range: TLOW = -40℃, THigh = 85℃
2. The deviation parameters △Vref and △Iref are defined as the difference between the maximum value and minimum value
obtained over the full operating ambient temperature range that applied.
∆Vref = Vref Max – Vref Min
∆Ta = T2 – T1
Ambient Temperature
The average temperature coefficient of the reference input voltage, αVref is defined as:
∆V ref
× 10 6 )
ppm
V ref (Ta = 25℃)
)=
α V ref (
Ta
℃
(
αVref can be positive or negative depending on whether Vref Min or Vref Max occurs at the lower ambient temperature, refer to
Fig. 8
Example : △Vref = 10mV and the slope is positive,
△Vref @ 25℃ = 1.24V
△Ta = 125℃
0.010
(
) × 10 6
ppm
1.241
= 65ppm / ℃
αVref (
)=
125
℃
3. The dynamic impedance ZKA is defined as:
Ζ KA =
∆VKA
∆I K
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:
Ζ KA ' = Ζ KA × (1 +
KSI-2015-005
R1
)
R2
3
SL432xSF
Electrical Characteristics Curves (Continue)
Fig.4 IK vs VKA (1)
Fig.5 IK vs VKA (2)
30
300
Cathode current IKA [µA]
Cathode current IK [mA]
VKA=Vref
Ta=25°C
20
10
0
-10
1.0
0.5
1.5
50
0
-10
-1
-0.5
0
0.5
1.0
1.5
Fig.7 ΔVref/ΔVKA vs Ta
0
4
12
8
16
20
cathode voltage ΔVref /ΔVKA [mV/V]
Fig.6 I K(off vs VKA
1
0.0
IK=10mA
-0.2
-0.3
-0.4
-0.5
-50
-25
0
25
50
75
Ambient Temperature Ta [˚C]
Fig.8 Vref vs Ta
Fig.9 PD vs Ta
Vref(max)
1.26
Vref(typ)
1.24
Vref(min)
1.22
0
100
500
1.28
-25
2.0
∆VKA=Vref – 16V
-0.1
Cathode Voltage VKA [V]
VKA=Vref , IK=10mA
1.20
-50
100
Cathode Voltage VKA [V]
2
1.30
150
Cathode Voltage VKA [V]
Ta=25°C
3
Ta=25°C
200
-50
2.0
VKA=16V, Vref=0V
0
Reference input voltage Vref [V]
0
Power dissipation PD [mW]
I
4
-0.5
Ratio of delta reference input voltage to delta
Off-state cathode current IK(off) [µA]
-1
VKA=Vref
250
25
50
75
100
400
300
200
100
0
0
25
50
75
100
125
150
Ambient Temperature Ta [˚C]
Ambient Temperature Ta [˚C]
KSI-2015-005
4
SL432xSF
Electrical Characteristics Curves
Fig.10 Stability Boundary Conditions
Output
30
Cathode current IK [mA]
Ta=25˚C
IK
R1
CL
20
R2
GND
Stable
0
10
A
0
0.001
B
0.01
0.1
1
Unstable Regions
VKA
R1 [KΩ]
R2 [KΩ]
A, B
Vref
0
∞
A
10V
10
1.415
10
Fig.11 Test circuit for Fig. 10
Load capacitance CL [µF]
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.
KSI-2015-005
5