SC431 Просмотр технического описания (PDF) - Semtech Corporation

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производитель

SC431

Adjustable Shunt Regulator

Semtech Corporation 

SC431

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless specified:TA = 25°C. Values in bold apply over full operating ambient temperature range.

SC431Cx-2

Parameter

Symbol

Condition

Min Typ Max Units

Reference Voltage

VREF Temp Deviation

Ratio of Change in VREF to

Change in VZ

Reference Input Current

IREF Temperature Deviation

Off-State Cathode Current

Dynamic Output Impedance

Minimum Operating Current

VREF

VDEV

∆VREF

∆VZ

IREF

IREF(DEV)

IZ (OFF)

rZ

IZ (MIN)

VZ = VREF, IZ = 10mA(1)

VZ = VREF, IZ = 10mA(1)

IZ = 10mA, ∆VZ = 10V to VREF

IZ = 10mA, ∆VZ =30V to 10V

R1 = 10kΩ, R2 = ∞, IZ = 10mA(2)

R1 = 10kΩ, R2 = ∞, IZ =10mA(2)

VREF = 0V, VZ =30V(3)

f < 1kHz, VZ = VREF, IZ = 130µA to 100mA(1)

VZ

=

V (1)

REF

2.445

2.495

15

-0.5

-1.0

0.5

0.4

0.04

0.25

2.545

30

-2.7

-2.0

4

1.2

0.50

0.50

130

V

mV

mV/V

µA

µA

µA

Ω

µA

Notes:

(1) See Test Circuit 1 below.

(2) See Test Circuit 2 below.

(3) See Test Circuit 3 below.

Test Circuits

Test Circuit 1

VZ = VREF

Test Circuit 2

VZ > VREF

Recommended Operating Conditions

Cathode Voltage, VZ

Cathode Current, IZ

Min

VREF

0.130

Max

30

150

Symbol

V

mA

 2008 Semtech Corp.

3

Test Circuit 3

Off-State

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