Copyright
ANPEC Electronics Corp.
Rev. B.8 - Mar., 2005
APL431L
www.anpec.com.tw
1
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Low Voltage Adjustable Precision Shunt Regulator
Features
General Description
Applications
The APL431L is a 3-terminal low voltage adjustable
precision reference with specified thermal stability
over applicable commercial temperature ranges. Out-
put voltage may be set to any value between V
ref
(1.
24 V) and 20 V with two external resistors (see Fig-
ure 2). When used with an photocoupler, the
APL431L is an ideal voltage reference in isolated feed-
back circuits for 3V to 12V switching-mode power
supplies. This device has a typical output imped-
ance of 0.1
. Active output circuitry provides a very
sharp turn-on characteristic,
making the APL431L ex-
cellent replacements for zener diodes in many
applications, including on-board regulation and ad-
justable power supplies.
Precise Reference Voltage to 1.24V
Guaranteed 0.5% or 1% Reference Voltage
Tolerance
Sink Current Capability, 80uA to 100mA
Quick Turn-on
Adjustable Output Voltage, V
O
= V
REF
to 20V
Low Operational Cathode Current, 80A
Typical
0.1
Typical Output Impedance
SOT-23-3, SOT-23-5, TO-92 and SOT-89
Packages
Lead Free Available (RoHS Compliant)
Linear Regulators
Adjustable Power Supply
Switching Power Supply
Symbol
Functional Diagram
V
ref
+
_
Cathode
REF
Anode
SOT-23-3 (Top View)
REF
ANODE
CATHODE
1
2
3
SOT-89 (Top View)
REF
ANODE CATHODE
1
2
3
REF
ANODE
CATHO DE
3
2
1
TO-92 (Top View)
Cathode
Anode
REF
REF
NC
CATHO DE
NC
ANO DE
1
2
3
4
5
SOT-23-5 (Top View)
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Mar., 2005
APL431L
www.anpec.com.tw
2
Symbol Parameter Rating
Unit
V
KA
Cathode
voltage
20 V
I
K
Continuous cathode current range
100 mA
I
REF
Reference
current
range
3 mA
JA
Thermal Resistance from Junction to Ambient in Free Air
SOT-23-3
SOT-23-5
SOT-89
TO-92
416
357
250
250
C/W
T
J
Operating Junction Temperature Range
-40 to 150
C
T
STG
Storage Temperature Range
-65 to 150
C
T
SOL
Lead temperature range, T
s
(Soldering, 10sec)
260
C
Ordering and Marking Information
A P L431L
E le c. G rad e
H and ling C od e
T e m p. R a nge
P acka ge C od e
E le c. G rad e
A : 0 .5 % R e fe re nce V oltage T oleran ce
B : 1 % R efe re nce V oltage T oleranc e
P acka ge C od e
A : S O T -23 -3 B : S O T -23 -5
D : S O T -89 E : T O -9 2
Y :C hip F orm
T e m p. R a nge
C : 0 to 70 C
I : -40 to 85 C
H and ling C od e
P B : P las tic B a g T B : T ape & B o x
T R : T a pe & R ee l
Le ad F re e C ode
L : Le ad F re e D e vice B lan k : O rig in al D evice
A P L
43 1L
XXXXX
XXXXX - D ate C od e
A P L 431 L E :
A P L 431 L D :
A P L 431 L
XXXXX
- D a te C od e
XXXXX
A P L 431 L A /B :
43 1L
Le ad F re e C ode
Absolute Maximum Ratings
Notes
ANPEC lead-free products contain molding compounds/die attach materials and 100% matte in plate
termination finish; which are fully compliant with RoHS and compatible with both SnPb and lead-free soldiering
operations. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J STD-020C for
MSL classification at lead-free peak reflow temperature.
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Mar., 2005
APL431L
www.anpec.com.tw
3
Electrical Characteristics
T
A
= 25C ( unless otherwise noted)
APL431L
Symbol Parameter
Test
Conditions
Min. Typ. Max.
Unit
APL431LA 1.234 1.240 1.246
V
KA
=V
REF
, I
K
=10mA
T
A
=25
C, (Fig. 1)
APL431LB 1.228 1.240 1.252
APL431LA 1.222 1.240 1.258
V
REF
Reference
voltage
T
A
=full range(see
Note1), (Fig.1)
APL431LB 1.215 1.240 1.265
V
V
DEF
V
DEF
Temp Deviation
T
A
=full range (see Note1)
V
KA
=V
REF
, I
K
=10mA (Fig. 1)
5 15
mV
V
REF
/
V
KA
Ratio of Change in V
REF
to Change in Cathods
Votage
I
K
=10mA, V
KA
=16V to V
REF
(Fig.
2)
-0.2
-1.0
mV/V
I
REF
Reference Input Current I
K
=10mA,R
1
=10k
,
R
2
=
(Fig. 2)
0.15
0.5
A
I
REF(DEV)
I
REF
Temp Deviation
T
K
=full range (see Note 1),
R
1
=10k
, R
2
=
,
I
K
=10mA,
(Fig. 2)
0.05
0.3
A
V
K
=6V
0.01
0.1
I
K(off)
off-state cathode current V
REF
=0V, (Fig. 3)
V
K
=16V 0.01
0.5
A
Z
KA
Dynamic Output
Impedance
V
KA
=V
REF
, I
K
=1mA to 100mA,
f
1kHz (Fig. 1)
0.1
0.4
I
K(MIN)
Minimum Operating
Current
V
KA
=V
REF
(Fig. 1)
80
100
A
Notes : 1.Full temperature range is 0
C to 70
C for APL431LXXC,and -40
C to 85
C for APL431LXXl.
Test Figures
Figure 1. Test Circuit for V
KA
=V
REF
, V
O
=V
KA
=V
REF
Figure 2. Test Circuit for V
KA
>V
REF
,
Figure 3. Test Circuit for I
K(off)
V
IN
V
o
I
K
V
REF
V
o
V
IN
I
K(off)
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Mar., 2005
APL431L
www.anpec.com.tw
4
Test Figures (Cont.)
Figure 2. Test Circuit for V
KA
>V
REF
,
V
O
= V
KA
= V
REF
(1+R
1
/R
2
) + I
REF
R
1
V
IN
I
K
I
REF
V
REF
R1
R2
V
o
Application Schematic
V
o
V
IN
0.1
F
R
2
R
1
V
RE F
R
B
Precision Voltage Reference
V
o
V
IN
0.1
F
R
B
V
REF
R
2
R
1
Precision High-Current Series Regulator
Notes for Application Circuits:
1) To improve the stability of output voltage, a 0.1
F
capacitor between cathode and anode of
APL431L is strongly recommended.
2)Set V
OUT
according to the following equation:
V
OUT
= V
REF
(1+R1/R2)+l
REF
R1
3)Choose the value for R
B
as follows:
A)The maximum limit for R
B
should be such that
the cathode current(l
K
) is greater than the mini
mum operating current (80
A) at V
IN(MIN)
.
B)The minimum limit for RB should be such that
the cathode current (l
K
) does not exceed 100mA
under all load conditions, and the instantaneous
turnon value for lk does not exceed 150mA. Both
of the following conditions must. be met:
V
IN(MAX)
150mA
V
IN(MAX)
-V
OUT
l
OUT(MIN)
+100mA
(to limit instantaneous turn-on l
K
)
R
B,Min
(to limit l
K
under normal operating conditions)
R
B,Min
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Mar., 2005
APL431L
www.anpec.com.tw
5
-100
-50
0
50
100
-1.5
-1
-0.5
0
0.5
1
1.5
0.08
0.10
0.12
0.14
0.16
0.18
-50
-25
0
25
50
75
100
125
150
1.22
1.23
1.24
1.25
1.26
-50
-25
0
25
50
75
100
125
150
-250
-200
-150
-100
-50
0
50
100
150
200
250
-1
-0.5
0
0.5
1
1.5
Typical Characteristics
V
KA
=V
REF
I
KA
=10mA
Cathode Voltage (V)
Cathode Current (mA)
Cathode Voltage (V)
Cathode Current (
A)
Cathode Current vs. Cathode Voltage
Cathode Current vs. Cathode Voltage
Junction Temperature (
C)
Reference Voltage (V)
Reference Input Current (
A)
Junction Temperature (
C)
Referemce Voltage vs.
Junction Temperature
Reference Input Current vs.
Junction Temperature
T
A
=25C
V
KA
=V
REF
T
A
=25C
R
1
=10k
, R
2
=
I
KA
=10mA
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Mar., 2005
APL431L
www.anpec.com.tw
6
0
0.1
0.2
0.3
0.4
0.5
-50
-25
0
25
50
75
100
125
150
0 S
0
1V
0
5 S
3V
0 S
5 S
0
1V
0
3V
-1
-0.9
-0.8
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
-50
-25
0
25
50
75
100
125
150
Typical Characteristics
Input
Junction Temperature (
C)
Ratio of Delta Reference Voltage to
Delta Cathode Voltage (-mV/V)
Junction Temperature (
C)
Off State Cathode Current (
A)
Off State Cathode Current vs.
Junction Temperature
V
REF
/
V
KA
vs. Junction Temperature
V
REF
=0V
V
KA
=16V
V
KA
=6V
I
KA
=1mA
Output
Input
Output
T
A
=25C
I
KA
=0.1mA
T
A
=25C
V
KA
=V
REF
to 20V
I
KA
=10mA
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Mar., 2005
APL431L
www.anpec.com.tw
7
0
10
20
30
40
50
60
70
80
90
100
0.0001
0.001
0.01
0.1
1
-10
0
10
20
30
40
50
60
10
100
1000
10000
100000 1000000
0
50
100
150
200
250
300
350
0.01
0.1
1
10
100
10
100
1000
10000
100000 1000000
Typical Characteristics
Frequency (Hz)
Zka (
)
Frequency (Hz)
Gain (dB)
Phase Shift (degree)
Gain vs. Phase Shift vs. Frequency
Zka vs. Frequency
Load Capacitance (
F)
Ik (mA)
Stability Boundary Conditions
V
KA
=V
REF
V
KA
=2.5V
V
KA
=3.3V
Stable
Unstable
V
KA
=V
REF
I
KA
=10mA
T
A
=25C
I
KA
=10mA
T
A
=25C
T
A
=25C
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Mar., 2005
APL431L
www.anpec.com.tw
8
SOT-23
Package Information
D
E
H
e
A
A1
L
C
B
3
2
1
M illim e te rs In c h e s
D im
M in . M a x . M in . M a x .
A 1 .0 0
1 .3 0
0 .0 3 9
0 .0 5 1
A 1 0 .0 0
0 .1 0
0 .0 0 0
0 .0 0 4
B 0 .3 5
0 .5 1
0 .0 1 4
0 .0 2 0
C 0 .1 0
0 .2 5
0 .0 0 4
0 .0 1 0
D 2 .7 0
3 .1 0
0 .1 0 6
0 .1 2 2
E 1 .4 0
1 .8 0
0 .0 5 5
0 .0 7 1
e 1 .9 0 /2 .1
B S C
0 .0 7 5 /0 .0 8 3
B S C
H 2 .4 0
3 .0 0
0 .0 9 4
0 .11 8
L 0 .3 7
0 .0 1 5
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Mar., 2005
APL431L
www.anpec.com.tw
9
SOT-23-5
e1
E1
E
b
1
2
3
4
5
e
D
A2
A
A1
L 2
L
L 1
a
Package Information
M illimeters Inches
Dim
M in. M ax. M in. M ax.
A 0.95 1.45 0.037 0.057
A1 0.05 0.15 0.002 0.006
A2 0.90 1.30 0.035 0.051
b 0.30 0.50 0.011 0.019
D 2.8 3.00 0.110 0.118
E 2.6 3.00
0.102 0.118
E1 1.5 1.70 0.059 0.067
e 0.95BSC
0.037BSC
e1 1.90BSC
0.074BSC
L 0.35 0.55 0.014 0.022
L1
0.20 BSC
0.008 BSC
L2 0.5 0.7 0.020 0.028
N 5
5
0
10
0
10
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Mar., 2005
APL431L
www.anpec.com.tw
10
Package Information
b2
L1
Q
A
b
L
SEATING PLANE
e1
e
J
E
S
D
1
2
3
S
TO-92
M i l l i m e t e r s
I n c h e s
D i m
M i n .
M a x .
M i n .
M a x .
A
4 . 3 1 8
5 . 3 3 4
0 . 1 7 0
0 . 2 1 0
b
0 . 4 0 6
0 . 5 5 9
0 . 0 1 6
0 . 0 2 2
b 2
0 . 4 0 6
0 . 5 5 9
0 . 0 1 6
0 . 0 2 2
D
4 . 4 4 5
5 . 2 0 7
0 . 1 7 5
0 . 2 0 5
E
3 . 1 7 5
4 . 1 9 1
0 . 1 2 5
0 . 1 6 5
e
2 . 4 1 3
2 . 6 6 7
0 . 0 9 5
0 . 1 0 5
e 1
1 . 1 4 3
1 . 3 9 7
0 . 0 4 5
0 . 0 5 5
J
3 . 4 2 9
0 . 1 3 5
L
1 2 . 7 0
0 . 5 0 0
L 1
1 . 2 7
0 . 0 5 0
Q
2 . 9 2 1
0 . 1 1 5
S
2 . 0 3 2
2 . 6 6 7
0 . 0 8 0
0 . 1 0 5
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Mar., 2005
APL431L
www.anpec.com.tw
11
D
D1
e
B1
e1
B
1
2
3
L
H
E
C
a
a
A
SOT-89 (Reference EIAJ ED-7500A Reg stration SC-62)
M illim eters
Inches
Dim
M in.
M ax.
M in.
M ax.
A
1.40
1.60
0.055
0.063
B
0.40
0.56
0.016
0.022
B1
0.35
0.48
0.014
0.019
C
0.35
0.44
0.014
0.017
D
4.40
4.60
0.173
0.181
D1
1.35
1.83
0.053
0.072
e
1.50 BSC
0.059 BSC
e1
3.00 BSC
0.118 BSC
E
2.29
2.60
0.090
0.102
H
3.75
4.25
0.148
0.167
L
0.80
1.20
0.031
0.047
10
10
Package Information
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Mar., 2005
APL431L
www.anpec.com.tw
12
Physical Specifications
t 25 C to Peak
tp
Ram p-up
t
L
Ram p-down
ts
Preheat
Tsm ax
Tsm in
T
L
T
P
25
Tem
p
er
at
ur
e
Tim e
Critical Zone
T
L
to T
P
Terminal Material
Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb), 100%Sn
Lead Solderability
Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3.
Reflow Condition
(IR/Convection or VPR Reflow)
Classificatin Reflow Profiles
Sn-Pb Eutectic Assembly
Pb-Free Assembly
Profile Feature
Large Body
Small Body
Large Body
Small Body
Average ramp-up rate
(T
L
to T
P
)
3
C/second max.
3
C/second max.
Preheat
-
Temperature Min (Tsmin)
-
Temperature Mix (Tsmax)
-
Time (min to max)(ts)
100
C
150
C
60-120 seconds
150
C
200
C
60-180 seconds
Tsmax to T
L
- Ramp-up Rate
3
C/second max
Tsmax to T
L
-
Temperature(T
L
)
-
Time (t
L
)
183
C
60-150 seconds
217
C
60-150 seconds
Peak Temperature(Tp)
225 +0/-5
C 240
+0/-5
C 245
+0/-5
C 250
+0/-5
C
Time within 5
C of actual Peak
Temperature(tp)
10-30 seconds
10-30 seconds
10-30 seconds 20-40 seconds
Ramp-down Rate
6
C/second max.
6
C/second max.
Time 25
C to Peak Temperature
6 minutes max.
8 minutes max.
Note: All temperatures refer to topside of the package. Measured on the body surface.
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Mar., 2005
APL431L
www.anpec.com.tw
13
Carrier Tape & Reel Dimensions
A
J
B
T2
T1
C
t
Ao
E
W
Po
P
Ko
Bo
D1
D
F
P1
Reliability Test Program
Test item
Method
Description
SOLDERABILITY MIL-STD-883D-2003
245
C, 5 SEC
HOLT MIL-STD-883D-1005.7
1000 Hrs Bias @125
C
PCT JESD-22-B,A102
168 Hrs, 100
%
RH, 121
C
TST MIL-STD-883D-1011.9
-65
C~150
C, 200 Cycles
ESD
MIL-STD-883D-3015.7
VHBM > 2KV, VMM > 200V
Latch-Up
JESD 78
10ms, 1
tr
> 100mA
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Mar., 2005
APL431L
www.anpec.com.tw
14
Application
A
B
C
J
T1
T2
W
P
E
178
1 70
2
13.5
0.15
3
0.15
14
2
1.3
0.3 12 + 0.3
12 - 0.1
8
0.1
1.75
0.1
F
D
D1
Po
P1
Ao
Bo
Ko
t
SOT-89
5.5
0.05 1.5
0.1
1.5
0.1 4.0
0.1 2.0
0.1 4.8
0.1 4.5
0.1 1.80
0.1 0.3
0.013
Application
A
B
C
J
T1
T2
W
P
E
178
1 60
1.0
12.0 2.5
0.15 9.0
0.5
1.4
8.0+ 0.3
- 0.3
4.0 1.75
F
D
D1
Po
P1
Ao
Bo
Ko
t
SOT-23
3.5
0.05 1.5 +0.1
0.1MIN 4.0 2.0
0.05
3.1
3.0
1.3
0.2
0.03
Application
A
B
C
J
T1
T2
W
P
E
178
1 72
1.0 13.0 + 0.2 2.5
0.15 8.4
2
1.5
0.3 8.0
0.3
4
0.1
1.75
0.1
F
D
D1
Po
P1
Ao
Bo
Ko
t
SOT-23-5
3.5
0.05 1.5
0.1
1.5
0.1 4.0
0.1 2.0
0.1 3.15
0.1 3.2
0.1
1.4
0.1 0.2
0.033
Application
A
D
D1
D2
F1,F2
H
H1
H2
H2A
3.18~12
4.00.2 0.36~0.53 9.0 MAX
2.5+0.2
-0.1
160.5
90.5
0.5 MAX
0.5 MAX
H3
H4
L
L1
P
P1
P2
T
T1
27.0 MAX 20.0 MAX 11.0 MAX 2.5 MIN
12.70.2
6.350.4
50.80.5 0.55 MAX 1.42 MAX
T2
W
W1
W2
TO-92
0.36~0.68 17.5~19
5.0~7.0
0.5 MAX
(mm)
H3
H4
H
H1
W1
W
H2
H2A
H2
H2
T2
T1
T
F1F2
P1
P
P2
D1
D
L
L1
A
D2
W2
Carrier Tape & Reel Dimensions
Carrier Tape & Reel Dimensions
Copyright
ANPEC Electronics Corp.
Rev. B.8 - Mar., 2005
APL431L
www.anpec.com.tw
15
Application
Carrier Width
Cover Tape Width
Devices Per Reel
SOT- 23
8
5.3
3000
SOT-23-5
8
5.3
3000
SOT- 89
12
9.3
1000
TO-92
17.5~19
5.0~7.0
2000
Cover Tape Dimensions
Anpec Electronics Corp.
Head Office :
5F, No. 2 Li-Hsin Road, SBIP,
Hsin-Chu, Taiwan, R.O.C.
Tel : 886-3-5642000
Fax : 886-3-5642050
Taipei Branch :
7F, No. 137, Lane 235, Pac Chiao Rd.,
Hsin Tien City, Taipei Hsien, Taiwan, R. O. C.
Tel : 886-2-89191368
Fax : 886-2-89191369
Customer Service
PDF 
ZIP