apl1087a.1

Rev. A.3 - May., 2003

APL1431

www.anpec.com.tw

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.

Adjustable Precision Shunt Regulator

Features

General Description

Applications

The APL1431 is a 3-terminal adjustable voltage ref-

erence with specified thermal stability over applicable

commercial temperature ranges. Output voltage may

be set to any value between V

ref

(2.5 V) and 20 V with

two external resistors (see Figure 2). When used

with an photocoupler, the APL1431 is an ideal volt-

age reference in isolated feedback circuits for 2.5V

to 12V switching-mode power supplies. This device

has a typical output impedance of 0.1

Ω. Active out-

put circuitry provides a very sharp turn-on

characteristic,

making the APL1431 excellent replace-

ments for zener diodes in many applications, includ-

ing on-board regulation and adjustable power

supplies.

•••••

Precise Reference Voltage to 2.500V

•••••

Guaranteed 0.5% or 1% Reference Voltage

Tolerance

•••••

Sink Current Capability , 1mA to 100mA

•••••

Quick Turn-on

•••••

Adjustable Output Voltage , V

= V

REF

to 20V

•••••

Low Operational Cathode Current , 250µA

Typical

•••••

0.1

Ω Typical Output Impedance

•••••

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

•••••

Linear Regulators

•••••

Adjustable Power Supply

•••••

Switching Power Supply

Symbol

Functional Diagram

ref

Cathode

REF

Anode

SOT-23 (Top View)

REF

ANODE

CATHODE

SOT-89 (Top View)

REF

ANODE

CATHODE

REF

ANODE

CATHO DE

TO-92 (Top View)

Cathode

Anode

REF

Rev. A.3 - May., 2003

APL1431

www.anpec.com.tw

Symbol

Parameter

Rating

Unit

Cathode voltage

Continuous cathode current range

120

REF

Reference current range

Thermal Resistance from Junction to Ambient in Free Air

SOT-23

SOT-89

TO-92

416

250

°C/W

Ambient temperature range APL1431XXC

APL1431XXI

0 to 70

-40 to 85

°C

Junction temperature range APL1431XXC

APL1431XXI

0 to 150

-40 to 150

°C

STG

Storage Temperature Range

-65 to 150

°C

SOL

Lead temperature range, T

(Soldering, 10sec)

260

°C

Ordering and Marking Information

A P L 1 4 3 1

E le c . G ra d e

H a n d lin g C o d e

T e m p . R a n g e

P a c k a g e C o d e

E le c . G ra d e

A : 0 .5 % R e fe re n c e V o lta g e T o le ra n c e

B : 1 % R e fe re n c e V o lta g e T o le ra n c e

P a c k a g e C o d e

A : S O T -2 3 D : S O T -8 9 E : T O -9 2

Y : C h ip F o rm

T e m p . R a n g e

C : 0 to 7 0 C

I : -4 0 to 8 5 C

H a n d lin g C o d e

P B : P la s tic B a g T B : T a p e & B o x

T R : T a p e & R e e l

A P L

1 4 3 1

X X X X X

X X X X X - D a te C o d e

A P L 1 4 3 1 E :

A P L 1 4 3 1 D :

A P L 1 4 3 1

X X X X X

- D a te C o d e

X X X X X

A P L 1 4 3 1 A :

1 4 3 1

Absolute Maximum Ratings

Electrical Characteristics

= 25°C ( unless otherwise noted)

APL1431

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

APL431A 2.487

2.500

2.513

REF

Reference voltage

REF

=10mA

APL431B 2.475

2.500

2.525

∆V

REF

Reference voltage

drift over temp. range

REF

, I

=10mA

= 0 to 70

°C

= -40 to 85

°C

=10mA, V

REF

to 10V

-1.5

-3

∆V

REF

∆V

Voltage ratio (open

loop gain)

=10mA, V

REF

to 20V

-1.2

-2.5

mV/V

Rev. A.3 - May., 2003

APL1431

www.anpec.com.tw

Electrical Characteristics Cont.

= 25°C ( unless otherwise noted)

Test figures

Figure 1. Test Circuit for V

REF

, V

REF

Figure 2. Test Circuit for V

REF

= V

REF

× (1+R

) + I

REF

× R

Figure 3. Test Circuit for I

K(off)

Notes :

*1 : use Figure 1

*2 : use Figure 2

*3 : use Figure 3

Application schematic

∗

should provide cathode current large than

1mA to maintain APL431 work properly.

5-Volt Precision Regulator

REF

K(off)

REF

27.5k

Ω

0.1%

27.5k

Ω

0.1%

APL1431

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

REF

Reference current

=10mA,

=10k

Ω, R

=open

1.0

µA

∆I

REF

Reference current

drift

=10mA, R

=10k

Ω,

=open, T

= -40 to 85

°C

0.3

µA

K(min)

Min. cathode current V

REF

0.25

0.5

K(off)

Off-state cathode

current

= 20V, V

REF

= 0V

0.1

µA

Dynamic impedance

REF

=1mA to 100mA, f

≤1kHz

0.1

0.4

Ω

Cathode current

REF

+ 50mV

100

Rev. A.3 - May., 2003

APL1431

www.anpec.com.tw

Typical Characteristics

Cathode Current -

-200

200

400

600

800

-1

Cathode Voltage (V)

K-MIN

Cathode Current vs. Cathode Voltage

100

125

-40

-20

Reference Current -

Reference Current vs.Temperature

Temperature - C

Temperature ( C)

Reference Voltage vs. Temperature

2.47

2.475

2.48

2.485

2.49

2.495

2.5

2.505

2.51

2.515

2.52

-20

100

-40

Reference Voltage -V

-100

-50

100

-1

Cathode Current vs. Cathode Voltage

Cathode Current -mA

Cathode Voltage -V

Rev. A.3 - May., 2003

APL1431

www.anpec.com.tw

Typical Characteristics (Cont.)

100

1000

Small-Signal Voltage Amplification vs Frequency

Small-Signal Voltage Amplification- dB

Frequency - kHz

10 11 12 13

Pulse Response

Time -

µs

Input and Output Voltage - V

Input

output

Temperature ( C)

-40

-20

100

0.1

0.2

0.3

0.4

0.5

= 20V

REF

= 0

Off-State Cathode Current -

Off-State Cathode Current vsTemperature

Temperature ( C)

-40 -20

40 60

100 120

-2

-1.75

-1.5

-1.25

-1

-0.75

-0.5

-0.25

= V

REF

to 20V

= 10mA

Ratio of Delta Reference Voltage to

Delta Cathode Voltage vs Temperature

Ratio of Delta Reference Voltage to

Delta Cathode Voltage - mV/V

Rev. A.3 - May., 2003

APL1431

www.anpec.com.tw

Typical Characteristics (Cont.)

= 10mA

= 25

°C

= 25

°C

200k

10k 20k

50k 100k

100m

200m

300m

500m

Reference Impedance vs Frequency

Frequency

Reference Impedance -

Ω

Figure 10

Figure 9

-500

500

1000

1500

2000

2500

-5

Off-State Cathode Current vs Cathode Voltage

REF

Cathode Voltage (V)

Off-State Cathode Current (

100

REF

Stable

=3.3V

0.001

0.01

0.1

Cathode Current -mA

Stability Boundary Conditions

Load Capacitance -

µF

Figure 11

Rev. A.3 - May., 2003

APL1431

www.anpec.com.tw

Packaging Information

SOT-23

M illimet ers

Inches

Dim

M in.

M ax.

M in.

M ax.

1.00

1.30

0.039

0.051

0.00

0.10

0.000

0.004

0.35

0.51

0.014

0.020

0.10

0.25

0.004

0.010

2.70

3.10

0.106

0.122

1.40

1.80

0.055

0.071

1.90 BSC

0.075 BSC

2.40

3.00

0.094

0.118

0.37

0.0015

Rev. A.3 - May., 2003

APL1431

www.anpec.com.tw

Packaging Information

SOT-89

M illim eters

Inches

Dim

M in.

M ax.

M in.

M ax.

1.40

1.60

0.055

0.063

0.40

0.56

0.016

0.022

0.35

0.48

0.014

0.019

0.35

0.44

0.014

0.017

4.40

4.60

0.173

0.181

1.35

1.83

0.053

0.072

1.50 BSC

0.059 BSC

3.00 BSC

0.118 BSC

2.29

2.60

0.090

0.102

3.75

4.25

0.148

0.167

0.80

1.20

0.031

0.047

Rev. A.3 - May., 2003

APL1431

www.anpec.com.tw

Packaging Information

SEATING PLANE

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 .

4 . 3 1 8

5 . 3 3 4

0 . 1 7 0

0 . 2 1 0

φ b

0 . 4 0 6

0 . 5 5 9

0 . 0 1 6

0 . 0 2 2

φ b 2

0 . 4 0 6

0 . 5 5 9

0 . 0 1 6

0 . 0 2 2

φ D

4 . 4 4 5

5 . 2 0 7

0 . 1 7 5

0 . 2 0 5

3 . 1 7 5

4 . 1 9 1

0 . 1 2 5

0 . 1 6 5

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

3 . 4 2 9

0 . 1 3 5

1 2 . 7 0

0 . 5 0 0

L 1

1 . 2 7

0 . 0 5 0

2 . 9 2 1

0 . 1 1 5

2 . 0 3 2

2 . 6 6 7

0 . 0 8 0

0 . 1 0 5

Rev. A.3 - May., 2003

APL1431

www.anpec.com.tw

Physical Specifications

Reference JEDEC Standard J-STD-020A APRIL 1999

Reflow Condition

(IR/Convection or VPR Reflow)

Pre-heat temperature

183 C

Peak temperature

Time

temperature

Classification Reflow Profiles

Convection or IR/

Convection

VPR

Average ramp-up rate(183

°C to Peak)

°C/second max.

°C /second max.

Preheat temperature 125 ± 25

°C)

120 seconds max

Temperature maintained above 183

°C

60 – 150 seconds

Time within 5

°C of actual peak temperature 10 –20 seconds

60 seconds

Peak temperature range

220 +5/-0

°C or 235 +5/-0°C 215-219°C or 235 +5/-0°C

Ramp-down rate

°C /second max.

Time 25

°C to peak temperature

6 minutes max.

Package Reflow Conditions

pkg. thickness

≥≥≥≥ 2.5mm

and all bgas

pkg. thickness < 2.5mm and

pkg. volume

≥≥≥≥ 350 mm³

pkg. thickness < 2.5mm and pkg.

volume < 350mm³

Convection 220 +5/-0

°C

Convection 235 +5/-0

°C

VPR 215-219

°C

VPR 235 +5/-0

°C

IR/Convection 220 +5/-0

°C

IR/Convection 235 +5/-0

°C

Terminal Material

Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb)

Lead Solderability

Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3.

Rev. A.3 - May., 2003

APL1431

www.anpec.com.tw

Carrier Tape & Reel Dimensions

Application

178

±1

± 1.0

12.0

2.5

± 0.15 9.0 ± 0.5

1.4

8.0+ 0.3

- 0.3

4.0

1.75

SOT-23

3.5

± 0.05 1.5 +0.1 F0.1MIN

4.0

2.0

± 0.05

3.1

3.0

1.3

0.2

±0.03

Application

178

±1

± 2 13.5 ± 0.15 3 ± 0.15

± 2

1.3

± 0.3

12 + 0.3

12 - 0.1

± 0.1

1.75

± 0.1

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

(mm)

R e lia b ility te s t p ro g ra m

Te s t ite m

M e th o d

D e s c rip tio n

S O L D E R A B IL IT Y

M IL -S T D -8 8 3 D -2 0 0 3

2 4 5

°C , 5 S E C

H O LT

M IL -S T D -8 8 3 D -1 0 0 5 .7

1 0 0 0 H rs B ia s @ 1 2 5

°C

P C T

J E S D -2 2 -B , A 1 0 2

1 6 8 H rs , 1 0 0 % R H , 1 2 1

°C

T S T

M IL -S T D -8 8 3 D -1 0 11 .9

-6 5

°C ~ 1 5 0°C , 20 0 C yc le s

E S D

M IL -S T D -8 8 3 D -3 0 1 5 .7

V H B M > 2 K V, V M M > 2 0 0 V

L a tc h -U p

J E S D 7 8

1 0 m s , I

> 1 0 0 m A

Rev. A.3 - May., 2003

APL1431

www.anpec.com.tw

Application

F1,F2

H2A

3.18~12

4.0±0.2 0.36~0.53 9.0 MAX

2.5+0.2

-0.1

16±0.5

9±0.5

0.5 MAX

27.0 MAX 20.0 MAX 11.0 MAX 2.5 MIN

12.7±0.2

6.35±0.4

50.8±0.5 0.55 MAX 1.42 MAX

TO-92

0.36~0.68 17.5~19

5.0~7.0

0.5 MAX

(mm)

H2A

F1F2