TDA3673 datasheet(2/16 Pages) PHILIPS

Part #	TDA3673

Description	Very low dropout voltage/quiescent current 3.3 V voltage regulator with enable

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Manufacturer	PHILIPS [NXP Semiconductors]

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2000 Feb 01

2

Philips Semiconductors

Preliminary speciﬁcation

Very low dropout voltage/quiescent current

3.3 V voltage regulator with enable

TDA3673

FEATURES

• Fixed 3.3 V, 100 mA regulator with enable function

• Supply voltage range up to 33 V (45 V)

• Very low quiescent current of 15 µA (typical value)

• Very low dropout voltage

• High ripple rejection

• Very high stability:

– Electrolytic capacitors: Equivalent Series Resistance

(ESR) < 38

Ω at IREG ≤ 25 mA

– Other capacitors: 100 nF at 200

µA ≤ IREG ≤ 100 mA.

• Pin compatible family TDA3672 to TDA3676

• Protections:

– Reverse polarity safe (down to

−25 V without high

reverse current)

– Negative transient of 50 V (RS =10 Ω, t < 100 ms)

– Able to withstand voltages up to 18 V at the output

(supply line may be short-circuited)

– ESD protection on all pins

– DC short-circuit safe to ground and VP of the

regulator output

– Temperature protection (at Tj > 150 °C).

GENERAL DESCRIPTION

The TDA3673 is a fixed 3.3 V voltage regulator with very

low dropout voltage and quiescent current, which operates

over a wide supply voltage range.

The IC is available as:

• TDA3673T: VP ≤ 33 V, −40 °C ≤ Tamb ≤ +85 °C and

SO8 package (non-automotive)

• TDA3673AT: VP ≤ 45 V, −40 °C ≤ Tamb ≤ +125 °C and

SO8 package (automotive).

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supply

VP

supply voltage

regulator on

TDA3673T

3

14.4

33

V

TDA3673AT

3

14.4

45

V

Iq

quiescent supply current

VP = 14.4 V; IREG = 0 mA;

VI(EN) =5V

−

15

30

µA

Voltage regulator

VREG

output voltage

8 V

≤ VP ≤ 22 V; IREG = 0.5 mA

3.16

3.3

3.44

V

6V

≤ V

P ≤ 45 V; IREG = 0.5 mA

3.13

3.3

3.47

V

0.5 mA

≤ IREG ≤ 100 mA;

VP = 14.4 V

3.13

3.3

3.47

V

VREG(drop)

dropout voltage

VP = 3.1 V; IREG = 50 mA;

Tamb ≤ 85 °C

−

0.18

0.3

V

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA3673T

SO8

plastic small outline package; 8 leads; body width 3.9 mm

SOT96-1

TDA3673AT

SO8

plastic small outline package; 8 leads; body width 3.9 mm

SOT96-1

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