TDA3617 데이터 시트보기 (PDF) - Philips Electronics

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TDA3617

Multiple voltage regulator

Philips Electronics 

Philips Semiconductors

Multiple voltage regulator

Preliminary specification

TDA3617

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Regulator 3 (IREG3 = 5 mA)

VREG3(off)

VREG3

output voltage off

output voltage

∆VREG3

∆VREGL3

IqREG3

SVRR3

line regulation

load regulation

quiescent current

supply voltage ripple

rejection

1 mA ≤ IREG3 ≤ 300 mA

5 V ≤ VP ≤ 17.5 V

5 V ≤ VP ≤ 17.5 V

1 mA ≤ IREG3 ≤ 300 mA

IREG3 = 300 mA

f = 3 kHz; Vi(p-p) = 2 V

−

1

3.14 3.3

3.14 3.3

−

2

−

20

−

10

60 70

400

mV

3.46

V

3.46

V

50

mV

50

mV

15

mA

−

dB

IREG3m

current limit

VREG3 > 3 V; note 4

0.35 0.45

−

A

IREG3sc

short circuit current

RL ≤ 0.5 Ω; note 5

15 50

−

mA

αct

cross talk noise

note 6

−

25

150

µV

Schmitt trigger for hold of regulator 3

Vthr

rising threshold voltage of VP rising

regulator 3

−

VREG1 − 0.15 VREG1 − 0.075 V

Vthf

falling threshold voltage of VP falling

regulator 2

2.7 VREG1 − 0.35 −

V

Vhys

hysteresis voltage

0.1 0.2

0.3

V

Notes

1. Minimum operating voltage, only if VP has exceeded 4.5 V.

2. The quiescent current is measured in the standby mode. Therefore, the enable inputs of regulators 1, 2 and 3 are

LOW (Ven < 1 V).

3. The drop-out voltage of regulators 1, 2 and 3 is measured between VP and VREGn.

4. At current limit, IREGmn is held constant (see Fig.5 for the behaviour of IREGmn).

5. The foldback current protection limits the dissipated power at short circuit (see Fig.5).

6. Perform the load regulation test with sine wave load of 10 kHz on the regulator output under test. Measure the RMS

ripple voltage on each of the remaining regulator outputs, using a 80 kHz low-pass filter.

1999 Jul 14

8

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