ANPEC APL1431LBBI-TR, APL1431LBBI-TB, APL1431LBBI-PB, APL1431LBBC-TR, APL1431LBBC-TB Datasheet
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APL1431L
Low Voltage Adjustable Precision Shunt Regulator
Features General Description
• Precise Reference Voltage to 1.24V
• Guaranteed 0.5% or 1% Reference Voltage
Tolerance
• Sink Current Capability , 60mA to 100mA
• Quick Turn-on
• Adjustable Output Voltage , V
O
= V
REF
to 20V
• Low Operational Cathode Current , 60mA
Typical
• 0.1Ω Typical Output Impedance
• SOT-23-5 Packages
Applications
•
Linear Regulators
• Adjustable Power Supply
• Switching Power Supply
The APL1431L is a 3-terminal low voltage adjust-
able precision reference with specified thermal sta-
bility over applicable commercial temperature ranges
. Output voltage may be set to any value between
V
(1.24 V) and 20 V with two external resistors
REF
(see Figure 2) . When used with an photocoupler ,
the APL1431L is an ideal voltage reference in iso-
lated feedback circuits for 1.24V to 12V switching-
mode power supplies . This device has a typical
output impedance of 0.1Ω . Active output circuitry
provides a very sharp turn-on characteristic , mak-
ing the APL1431L excellent replacements for zener
diodes in many applications , including on-board
regulation and adjustable power supplies .
ANODE REF
45
123
NC NC
CATHODE
Symbol
Functional Diagram
REF
V
REF
Cathode
+
−
Anode
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CathodeAnode
REF
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.
Copyright ANPEC Electronics Corp.
Rev. A.4 - May., 2003
APL1431L
Ordering and Marking Information
APL1431L
APL1431L B :
Handling Code
Temp. Range
Package Code
Elec. Grade
1431L
Elec. Grade
A : 0.5% Reference Voltage Tolerance
B : 1% Reference Voltage Tolerance
Package Code
B : SOT- 23 - 5
Temp. Range
C : 0 to 70 C I : -40 to 85 C
Handling Code
PB : Plastic Bag TB : Tape & Box
TR : Tape & Reel
Absolute Maximum Ratings
Symbol Parameter Rating Unit
V
KA
I
K
I
REF
JA
θ
T
J
T
STG
T
SOL
Cathode Voltage 20 V
Continuous Cathode Current 100 mA
Reference Current 3 mA
Thermal Resistance from Junction to Ambient in Free Air
SOT-23-5
357
Operating Junction Temperature Range -40 to 150
Storage Temperature Range -65 to 150
Lead Temperature Range, Ts (Soldering, 10sec) 260
C/W
°
°
°
°
C
C
C
Electrical Characteristics
TA= 25°C ( unless otherwise noted)
Symbol Parameter Test Conditions
VKA=V
T
V
Reference Voltage
REF
A
T
A
, IK=10mA
REF
= 25°C, (Fig. 1)
= full range
(see Note 1), (Fig. 1)
= full range(see Note 1),
T
V
∆
/∆V
I
Copyright ANPEC Electronics Corp.
Rev. A.4 - May., 2003
V
Temp Deviation
DEF
Ratio of Change in V
to Change in Cathode
Voltage
Reference Input Current
V
REF
DEV
REF
KA
A
V
KA =VREF
REF
I
=10mA, ∆VKA =16V to V
K
=10mA, R1=10kΩ, R2=∞ (Fig. 2)
I
K
, IK =10mA, (Fig. 1)
APL1431L
Min. Typ. Max.
APL1431LA 1.234 1.240 1.246
APL1431LB 1.228 1.240 1.252
APL1431LA 1.222 1.240 1.258
APL1431LB 1.215 1.240 1.265
515mV
(Fig. 2)
REF
-0.2 -1.0 mV/V
0.15 0.5
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Unit
V
A
µ
APL1431L
)
Electrical Characteristics T
= 25°C ( unless otherwise noted)
A
Symbol Parameter Test Conditions
T
= full range(see Note 1), R1=10kΩ,
I
REF(DEV
I
K(off)
Z
KA
I
K(MIN)
I
Tem p D ev ia t i o n
REF
Off-state cathode current V
Dynamic Output
Impedance
Minimum Operating
Current
Note : 1. Full temperature range is 0
A
R
=∞ , IK=10mA, (Fig. 2)
2
=0V, (Fig. 3)
REF
V
KA =VREF
, IK=100µA to 100mA ,
f<1kHz , (Fig. 1 )
V
=V
KA
, (Fig. 1) 60 80
REF
°C to 70°C for APL1431LXXC, and –40°C to 85°C for APL1431LXXI.
Test Circuits
V
IN
I
V
O
K
APL1431L
Min. Typ. Max.
0.05 0.3
VK=6V 0.01 0.1
V
=16V 0.01 0.5
K
0.1 0.3
V
IN
I
R
1
I
REF
Unit
A
µ
A
µ
Ω
A
µ
V
O
K
V
REF
Figure 1. Test Circuit for VKA=V
, VO=VKA=V
REF
IN
V
Figure 3. Test Circuit for I
REF
R
2
V
REF
Figure 2. Test Circuit for VKA>V
VO= VKA= V
V
O
I
K(OFF)
K(OFF)
× (1+R1/R2) + I
REF
REF
,
× R
REF
1
Copyright ANPEC Electronics Corp.
Rev. A.4 - May., 2003
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