TDA3668AT datasheet(5/16 Pages) PHILIPS

No. de pieza	TDA3668AT

Descripción Electrónicos	Very low dropout voltage/quiescent current 5 V regulator with overvoltage switch off

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Fabricante Electrónico	PHILIPS [NXP Semiconductors]

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5 / 16 page

2000 Feb 01

5

Philips Semiconductors

Preliminary speciﬁcation

Very low dropout voltage/quiescent current

5 V regulator with overvoltage switch off

TDA3668AT

CHARACTERISTICS

VP = 14.4 V; Tamb =25 °C; measured in test circuit of Fig.4; unless otherwise speciﬁed.

Notes

1. The regulator output will follow VP if VP <VREG +VREG(drop).

2. Limiting values as applicable for device type: VP ≤ 50 V and −40 °C ≤ Tamb ≤ +125 °C.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supply voltage: pin VP

VP

supply voltage

regulator operating; note 1

3

14.4

24

V

load dump; tf ≤ 50 ms; tr ≥ 2.5 ms

−−

50

V

overvoltage protection; regulator

switched off

24

28

−

V

Iq

quiescent current

VP = 4.5 V; IREG =0mA

−

10

−µA

VP = 14.4 V; IREG =0mA

−

15

30

µA

6V

≤ V

P ≤ 22 V; IREG =10mA

−

0.2

0.5

mA

6V

≤ V

P ≤ 22 V; IREG =50mA

−

1.4

2.5

mA

Regulator output: pin REG; note 2

VREG

output voltage

8 V

≤ VP ≤ 22 V; IREG = 0.5 mA

4.8

5.0

5.2

V

6V

≤ V

P ≤ 24 V; IREG = 0.5 mA;

Tamb ≤ 125 °C

4.75

5.0

5.25

V

0.5 mA

≤ IREG ≤ 100 mA;

Tamb ≤ 125 °C

4.75

5.0

5.25

V

VREG(drop)

dropout voltage

VP = 4.5 V; IREG = 50 mA;

Tamb ≤ 85 °C

−

0.18

0.3

V

VREG(stab)

long-term stability voltage

−

20

−

mV/1000 h

∆VREG(line) line input regulation voltage 8 V ≤ VP ≤ 22 V; IREG = 0.5 mA

−

130

mV

7V

≤ V

P ≤ 22 V; IREG = 0.5 mA;

Tamb ≤ 85 °C

−

150

mV

∆V

REG(load)

load output regulation

voltage

0.5 mA

≤ IREG ≤ 50 mA;

Tamb ≤ 125 °C

−

10

50

mV

SVRR

supply voltage ripple

rejection

fP(ripple) = 120 Hz; VP(ripple)(rms) =1V;

IREG = 0.5 mA

50

60

−

dB

IREG(crl)

current limit

VREG > 4.5 V

0.17

0.25

−

A

ILO(rp)

output leakage current at

reverse polarity

VP = −15 V; VREG ≤ 0.3 V

−

1

500

µA

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