TDA4700 データシートの表示（PDF） - Siemens AG

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TDA4700

Control IC for Single-Ended and Push-Pull Switched-Mode Power Supplies SMPS

Siemens AG 

TDA 4700

TDA 4718

Operating Range

Parameter

Symbol

Limit Values

min. max.

Unit Test

Condition

Supply voltage

VS

Ambient temperature

TDA 4700

TDA 4718 TA

TDA 4700 A

TDA 4718 A TA

VCO frequency

f

Ramp generator frequency fRG

10.5

30

V

– 25

85

°C

0

70

°C

40

250 000 Hz

40

250 000 Hz

Characteristics

VS = 11 to 30 V; TA = – 25 to 85 °C

Parameter

Symbol

Limit Values

min.

typ. max.

Supply current

IS

8

20

Reference

Reference voltage

Reference voltage

change

Reference voltage

change

Reference voltage

change

Temperature

coefficient

Response threshold

of IREF overcurrent

VREF

∆VREF

∆VREF

∆VREF

TC

IREF

2.35

2.5 2.65

8

15

151)

0.25 0.4

10

1) At TA = 0 to 70 °C, this value falls to max. 5 mV

Unit Test

Condition

mA CT = 1 nF

fVCO = 100 kHz

V

0 mA < IREF < 5 mA

mV 14 V ± 20 %

mV 25 V ± 20 %

mV 0 mA < IREF < 5 mA

mV/K

mA

Semiconductor Group

12

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