RC431A datasheet(4/9 Pages) FAIRCHILD

Part #	RC431A

Description	Low-Voltage Adjustable Precision Shunt Regulator

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

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4 / 9 page

RC0431A (RC431A)

PRODUCT SPECIFICATION

4

REV. 1.0.7 8/5/03

Parameter Measurement Information

Figure 1. Test Circuit for

Figure 2. Test Circuit for

VKA = VREF, VOUT = VKA = VREF

VKA > VREF, VOUT = VKA = VREF x (1+R1/R2) + IREF x R1

Figure 3. Test Circuit for IOFF

Figure 4. Reference Voltage vs. Junction Temp.

Figure 5. Reference Input Current vs. Junction Temp.

Figure 6. Cathode Current vs. Cathode Voltage

Figure 7. Cathode Current vs. Cathode Voltage

VOUT

V

65-431A-05

IN

Vref

IK

VOUT

VIN

Vref

IK

R1

R2

Iref

65-431A-06

VOUT

VIN

IOFF

65-431A-07

1.250

1.246

1.242

1.238

1.230

–20

–40

20

040

60

80

100

Tj—Junction Temp. (

°C)

lk = 10 mA

250

200

150

100

50

–40

–20

0

20

40

60

80

100

Tj—Junction Temp. (

°C)

lk = 10 mA, R1 = 10 k

Ω, R2 = infinite

15

10

5

0

–5

–10

–15

–0.5

-1

0

0.5

1

1.5

VKA–Cathode Voltage (V)

VKA = Vref, T = 25

°C

150

120

90

60

30

0

–30

–60

–90

–120

–150

–0.5

–1

0

0.5

1

1.5

VKA–Cathode Voltage (V)

VKA = Vref, T = 25

°C

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