LT1431CS8 datasheet(2/12 Pages) LINER

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LT1431

BSOLUTEXI

V+, VCOLLECTOR ....................................................... 36V

VCOMP, RTOP,RMID,VREF ............................................ 6V

GND-F to GND-S .................................................... 0.7V

Ambient Temperature Range

LT1431M ........................................ – 55

°C to 125°C

LT1431I ............................................ – 40

°C to 85°C

LT1431C .............................................. 0

°C TO 70°C

JunctionTemperature Range

LT1431M ........................................ – 55

°C to 150°C

LT1431I .......................................... – 40

°C to 100°C

LT1431C ............................................. 0

°C to 100°C

Storage Temperature Range ................ –65

°C to 150°C

Lead Temperature (Soldering, 10 sec)................ 300

°C

LT1431CZ

LT1431IZ

ORDER PART

NUMBER

LT1431CS8

LT1431IS8

LT1431

LT1431I

ORDER PART

NUMBER

PART

MARKING

LT1431M/I

LT1431C

TA = 25°C, IK = 10mA, unless otherwise specified (Note 1).

The q denotes specifications which apply over the operating temperature

range.

Note 1: VKA is the cathode voltage of the LT1431CZ/IZ and corresponds to

V + of the LT1431CN8/MJ8. IK is the cathode current of the LT1431CZ/IZ

and corresponds to I(V +) + ICOLLECTOR of the LT1431CN8/MJ8/IN8.

Note 2: The LT1431 has bias current cancellation which is effective only

for VKA ≥ 3V. A slight (≈2mV) shift in reference voltage occurs when

VKA drops below 3V. For this reason, these tests are not performed at

VKA = VREF.

ELECTRICAL CHARACTERISTICS

LT1431MJ8

LT1431CN8

LT1431IN8

PACKAGE/ORDER I FOR ATIO

ORDER PART

NUMBER

TOP VIEW

COLLECTOR

COMP

V+

RTOP

REF

RMID

GND-F

GND-S

N8 PACKAGE

8-LEAD PLASTIC DIP

J8 PACKAGE

8-LEAD CERAMIC DIP

TJ MAX = 150°C, θJA = 100°C/W (J)

TJ MAX = 100°C, θJA = 130°C/W (N)

TOP VIEW

REF

RMID

GND-F

GND-S

COMP

V+

RTOP

S8 PACKAGE

8-LEAD PLASTIC SOIC

COLLECTOR

TJ MAX = 100°C, θJA = 170°C/W

BOTTOM VIEW

REF ANODE

Z PACKAGE

3-LEAD TO-92 PLASTIC

CATHODE

TJ MAX = 100°C, θJA = 160°C/W

SYMBOL

PARAMETER

CONDITIONS

MIN TYP MAX

UNITS

VREF

Reference Voltage

VKA = 5V, IK = 2mA, (Note 2)

2.490 2.500 2.510

2.465

2.535

2.480

2.520

∆VREF/∆T

Reference Drift

VKA = 5V, IK = 2mA

ppm/

°C

∆VREF/∆VKA Voltage Ratio, Reference to

IK = 2mA, VKA = 3V to 36V

0.2

0.5

0.2

0.5

mV/V

Cathode (Open-Loop Gain)

|IREF|

Reference Input Current

VKA = 5V, TA = 25°C

0.2

1.0

0.2

1.0

µA

1.5

1.2

µA

IMIN

Minimum Operating Current

VKA = VREF to 36V

0.6

1.0

0.6

1.0

|IOFF|

Off-State Cathode Current

VKA = 36V, VREF = 0V

µA

|ILEAK|

Off-State Collector Leakage Current

VCOLL = 36V, V + = 5V, VREF = 2.4V

µA

|ZKA|

Dynamic Impedance

VKA = VREF, IK = 1mA to 100mA, f ≤ 1kHz

0.2

Ω

ILIM

Collector Current Limit

VKA = VREF + 50mV

360

100

260

5V Reference Output

Internal Divider Used, IK = 2mA

4.950 5.000 5.050

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