TLE4270 datasheet(7/19 Pages) SIEMENS

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TLE 4270

Semiconductor Group

1998-11-01

Load regulation

∆V

–25

Q = 5 to 550 mA;

I = 6 V

Supply voltage

regulation

∆V

–12

I = 6 to 26 V

Q = 5 mA

Power supply

Ripple rejection

PSRR

–54

–

r =100 Hz;

r =0.5 VSS

Reset Generator

Switching threshold

4.5

4.65

4.8

–

Reset High voltage

ROH

4.5

–

Reset low voltage

ROL

–60

–

intern =30 kΩ

2);

1.0 V

≤ V

Q ≤ 4.5 V

Reset low voltage

ROL

–

200

400

R = 3 mA, VQ = 4.4 V

Reset pull-up

Ω

internally connected

to Q

Lower reset timing

threshold

DRL

0.2

0.45

0.8

Q < VRT

Charge current

814

µA

D = 1.0 V

Upper timing

threshold

1.4

1.8

2.3

–

Delay time

–13

–

D = 100 nF

Reset reaction time

––

µs

D = 100 nF

Overvoltage Protection

Turn-Off voltage

I, ov

–

1) Drop voltage = V

I – VQ (measured when the output voltage has dropped 100 mV from the nominal value

obtained at 13.5 V input)

2) Reset peak is always lower than 1.0 V.

Characteristics (cont’d)

I = 13.5 V; – 40 °C ≤ Tj = ≤ 125 °C (unless otherwise specified)

Parameter

Symbol

Limit Values

Unit

Test Condition

min.

typ.

max.

TLE4270 Datasheet(PDF) 7 Page - Siemens Semiconductor Group

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