ANPEC APL1431LBBI-TR, APL1431LBBI-TB, APL1431LBBI-PB, APL1431LBBC-TR, APL1431LBBC-TB Datasheet

APL1431L

Low Voltage Adjustable Precision Shunt Regulator

Features

•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 , VO = VREF 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

Symbol

REF

Anode

Cathode

General Description

The APL1431L is a 3-terminal low voltage adjustable precision reference with specified thermal stability over applicable commercial temperature ranges

. Output voltage may be set to any value between VREF (1.24 V) and 20 V with two external resistors (see Figure 2) . When used with an photocoupler , the APL1431L is an ideal voltage reference in isolated feedback circuits for 1.24V to 12V switchingmode power supplies . This device has a typical output impedance of 0.1Ω . Active output circuitry provides a very sharp turn-on characteristic , making the APL1431L excellent replacements for zener diodes in many applications , including on-board regulation and adjustable power supplies .

ANODE REF

5 4

1 2 3

NC NC CATHODE

Functional Diagram

	Cathode
REF	+
	−
	VREF
	Anode

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.	1	www.anpec.com.tw
Rev. A.4 - May., 2003

APL1431L

Ordering and Marking Information

APL1431L

Elec. Grade

A : 0.5% Reference Voltage Tolerance

Handling Code

B : 1% Reference Voltage Tolerance

Temp. Range

Package Code

B : SOT23 - 5

Package Code

Temp. Range

C : 0 to 70 C

I : -40 to 85 C

Elec. Grade

Handling Code

PB : Plastic Bag

TB : Tape & Box

TR : Tape & Reel

APL1431L B :

1431L

Absolute Maximum Ratings

Symbol

Parameter

Rating

Unit

VKA

Cathode Voltage

20

V

IK

Continuous Cathode Current

100

mA

IREF

Reference Current

3

mA

JA

Thermal Resistance from Junction to Ambient in Free Air

357

C/W

θ

SOT-23-5

°

TJ

Operating Junction Temperature Range

-40 to 150

°C

TSTG

Storage Temperature Range

-65 to 150

°C

TSOL

Lead Temperature Range, Ts (Soldering, 10sec)

260

°C

Electrical Characteristics TA= 25°C ( unless otherwise noted)

Symbol

Parameter

Test Conditions

APL1431L

Unit

Min.

Typ.

Max.

VKA=VREF, IK=10mA

APL1431LA

1.234

1.240

1.246

VREF

Reference Voltage

TA= 25°C, (Fig. 1)

APL1431LB

1.228

1.240

1.252

V

TA= full range

APL1431LA

1.222

1.240

1.258

(see Note 1), (Fig. 1)

APL1431LB

1.215

1.240

1.265

VDEV

VDEF Temp Deviation

TA= full range(see Note 1),

5

15

mV

VKA =VREF , IK =10mA, (Fig. 1)

∆VREF

Ratio of Change in VREF

IK=10mA, ∆VKA =16V to VREF (Fig. 2)

to Change in Cathode

-0.2

-1.0

mV/V

/∆VKA

Voltage

IREF

Reference Input Current

IK=10mA, R1=10kΩ, R2=∞ (Fig. 2)

0.15

0.5

µA

Copyright ANPEC Electronics Corp.

2

www.anpec.com.tw

Rev. A.4 - May., 2003

APL1431L

Electrical Characteristics			TA= 25°C ( unless otherwise noted)
Symbol	Parameter		Test Conditions				APL1431L				Unit
						Min.		Typ.		Max.
IREF(DEV)	IREF Temp Deviation	TA= full range(see Note 1), R1=10kΩ,						0.05		0.3	µA
		R2=∞ , IK=10mA, (Fig. 2)
IK(off)	Off-state cathode current	VREF=0V, (Fig. 3)			VK=6V			0.01		0.1	µA
					VK=16V			0.01		0.5
ZKA	Dynamic Output	VKA =VREF	, IK=100µA to 100mA ,					0.1		0.3	Ω
	Impedance	f<1kHz , (Fig. 1 )
IK(MIN)	Minimum Operating	VKA =VREF , (Fig. 1)						60		80	µA
	Current

Note : 1. Full temperature range is 0°C to 70°C for APL1431LXXC, and –40°C to 85°C for APL1431LXXI.

Test Circuits

VIN	VO	VIN	VO
	I K		I K
		R1	I REF
	V REF	R2	VREF

Figure 1. Test Circuit for VKA=VREF, VO=VKA=VREF		Figure 2. Test Circuit for VKA>VREF,
					VO= VKA= VREF× (1+R1/R2) + IREF × R1
VIN					VO
					IK(OFF)

Figure 3. Test Circuit for IK(OFF)

Copyright ANPEC Electronics Corp.	3	www.anpec.com.tw
Rev. A.4 - May., 2003