ANPEC APL431LBYI-TR, APL431LBYI-TB, APL431LBYC-TR, APL431LBYC-TB, APL431LBYC-PB Datasheet

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ANPEC APL431LBYI-TR, APL431LBYI-TB, APL431LBYC-TR, APL431LBYC-TB, APL431LBYC-PB Datasheet

APL431L

Low Voltage Adjustable Precision Shunt Regulator

Features

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, VO = VREF to 20V

Low Operational Cathode Current, 80µA Typical

0.1Ω Typical Output Impedance

SOT-23-3, SOT-23-5, TO-92 and SOT-89 Packages

Applications

Linear Regulators

Adjustable Power Supply

Switching Power Supply

Symbol

REF

Anode Cathode

General Description

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 Vref (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 feedback circuits for 3V 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,making the APL431L excellent replacements for zener diodes in many applications, including on-board regulation and adjustable power supplies.

 

 

 

 

ANODE

 

 

 

 

 

NC

 

 

 

 

NC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

5

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

2

 

 

 

 

1

2

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REF

CATHODE

 

REF ANODE CATHODE

SOT-23-3 (Top View)

SOT-23-5 (Top View)

 

 

 

 

 

3

CATHODE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

ANODE

 

1

 

2

 

3

 

 

 

 

 

 

 

 

1

REF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REF

ANODE CATHODE

TO-92 (Top View)

SOT-89 (Top View)

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. B.7 - May., 2003

APL431L

Ordering and Marking Information

APL431L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Elec. Grade

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A : 0.5% R eference Voltage Tolerance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B : 1% R eference Voltage Tolerance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H andling C ode

Package C ode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tem p. Range

A : S O T-23-3

 

B : S OT -23-5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D : SO T-89

 

E : TO -92

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Package C ode

Y :C hip Form

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tem p. Range

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Elec. Grade

C : 0 to 70 ° C

 

I : -40 to 85 ° C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H andling C ode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P B : Plastic Bag

TB : Tape & B ox

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TR : Tape & Reel

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AP L

 

 

 

431L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AP L431L A/B :

 

 

 

 

 

AP L431L E :

 

431L

 

XX XX X - Date Code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XX XX X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AP L431L D :

AP L431L

 

 

 

XX XX X

- D ate Code

 

 

 

 

 

XX XX X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Absolute Maximum Ratings

Symbol

Parameter

Rating

Unit

VKA

Cathode voltage

20

V

IK

Continuous cathode current range

100

mA

IREF

Reference current range

3

mA

θJA

Thermal Resistance from Junction to Ambient in Free Air

 

C/W

 

 

 

°

 

SOT-23-3

416

 

 

SOT-23-5

357

 

 

SOT-89

250

 

 

TO-92

250

 

T J

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

 

 

 

°

Copyright ANPEC Electronics Corp.

2

www.anpec.com.tw

Rev. B.7 - May., 2003

 

 

APL431L

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

Symbol

Parameter

Test Conditions

 

APL431L

 

Unit

Min.

 

Typ.

 

Max.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VKA=VREF, IK=10mA

APL431LA

1.234

 

1.240

 

1.246

 

VREF

Reference voltage

TA =25°C, (Fig. 1)

APL431LB

1.228

 

1.240

 

1.252

V

TA =full range(see

APL431LA

1.222

 

1.240

 

1.258

 

 

Note1), (Fig.1)

APL431LB

1.215

 

1.240

 

1.265

 

 

 

 

 

 

 

 

 

 

 

 

VDEF

VDEF Temp Deviation

TA =full range (see Note1)

 

 

5

 

15

mV

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

∆VREF / ∆VKA

Ratio of Change in VREF

 

 

 

 

 

 

 

 

 

to Change in Cathods

IK=10mA, VKA=16V to VREF (Fig. 2)

 

 

-0.2

 

-1.0

mV/V

 

Votage

 

 

 

 

 

 

 

 

 

IREF

Reference Input Current

IK=10mA,R1 =10kΩ,R2 =∞ (Fig. 2)

 

 

0.15

 

0.5

µA

 

 

TK=full range (see Note 1),

 

 

 

 

 

 

IREF(DEV)

IREF Temp Deviation

R1=10kΩ, R2=∞, IK=10mA,

 

 

0.05

 

0.3

µA

 

 

(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=1mA to 100mA,

 

 

0.1

 

0.4

Impedance

f ≤1kHz (Fig. 1)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IK(MIN)

Minimum Operating

VKA=VREF (Fig. 1)

 

 

 

 

80

 

100

µA

Current

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Notes : 1.Full temperature range is 0°C to 70°C for APL431LXXC,and -40°C to 85°C for APL431LXXl.

Copyright ANPEC Electronics Corp.

3

www.anpec.com.tw

Rev. B.7 - May., 2003

 

 

APL431L

Test figures

VIN

Vo

IK

VREF

Figure 1. Test Circuit for VKA=VREF , VO=VKA=VREF

VIN

Vo

IK

R1 IREF

R2 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.

4

www.anpec.com.tw

Rev. B.7 - May., 2003

 

 

APL431L

Application Schematic

Precision Voltage Reference

RB

 

VIN

Vo

R1

 

VREF

0.1 F

R2

 

Precision High-Current Series Regulator

VIN

 

Vo

 

RB

R1

 

 

VREF

0.1 F

R2

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 VOUT according to the following equation: VOUT = VREF(1+R1/R2)+lREF R1

3)Choose the value for RB as follows:

A)The maximum limit for RB should be such that the cathode current(lK) is greater than the minimum operating current (80 A) at VIN(MIN).

B)The minimum limit for RB should be such that the cathode current (lK) does not exceed 100mA under all load conditions, and the instantaneous turn-on value for lk does not exceed 150mA. Both of the following conditions must. be met:

RB,Min

VIN(MAX)

(to limit instantaneous turn-on lK)

 

 

 

150mA

 

 

 

 

VIN(MAX)-VOUT

(to limit lK

under normal operating conditions)

 

RB,MinlOUT(MIN)+100mA

 

 

 

 

 

 

 

Copyright ANPEC Electronics Corp.

5

www.anpec.com.tw

Rev. B.7 - May., 2003

 

 

 

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