AP431 datasheet(2/5 Pages) A-POWER

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Advanced Power

Electronics Corp.

AP431

ABSOLUTE MAXIMUM RATINGS

Cathode Voltage (VKA) ------------------------------------- 18V

Continuous Cathode Current (IKA) ---------------------- 150mA

Reference Input Current (IREF) --------------------------- 10mA

Power Dissipation (PD) ---------------------------------------------

SOT-23 -------- 0.3W

SOT-89 -------- 0.625W

SO-8 -----------

1.25W

TO-92 ---------- 0.64W

Storage Temperature Range (TST) --------------------- -65 to +150°C

Junction Temperature (TJ) -------------------------------- +125°C

SOT-23 -------- 336°C/W

SOT-89 -------- 160°C/W

SO-8 -----------

80°C/W

TO-92 ---------- 156°C/W

Lead Temperature (Soldering) 10 seconds (TLEAD)

260°C

ELECTRICAL SPECIFICATIONS

(TA =25

oC, unless otherwise specified)

Parameter

SYM

TEST CONDITION

MIN

TYP

MAX

UNITS

Reference Voltage (Test circuit 1)

VREF

VKA = VREF, IKA = 10mA

2.47

2.495

2.52

VKA = VREF,

IKA = 10mA,

TA = Full Range

R1 = 10KΩ,

R2 = ∞, IKA= 10mA

R1 = 10KΩ,

R2 = ∞, IKA = 10mA

TA = Full Range

Minimum Cathode Current for

Regulation (Test circuit 1)

IKA(min)

VKA = VREF

0.4

VKA = 18V,

VREF = 0V

V KA = VREF, IKA = 1mA ~ 100mA

Frequency < 1KHz

Off-state Cathode Current (Test

circuit 3)

Reference Input Current (Test

circuit 2)

IREF

-2

1.2

mV/V

0.5

0.4

Dynamic Impedance (Test circuit 1)

0.2

IKA(OFF)

0.1

Thermal Resistance from Junction to ambient (Rthja)

IKA = 10mA, δVKA=10V -VREF

Deviation of Reference Input

Voltage over full temperature range

(Test circuit 1)

VREF(DEV)

Deviation of Reference current over

full temperature range (Test circuit

IREF(DEV)

-2.7

-1.4

Ratio of change in reference

voltage to the change in cathode

voltage (Test circuit 2)

ΔV RE F

ΔV KA

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