TDA3665 datasheet(2/20 Pages) PHILIPS

2 / 20 page

2000 Apr 25

Philips Semiconductors

Preliminary speciﬁcation

Very low dropout voltage/quiescent current

8.5 V voltage regulator

TDA3665

FEATURES

• Fixed 8.5 V, 100 mA regulator

• 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) < 30

Ω at IREG ≤ 25 mA (see Fig.6)

– Other capacitors: 100 nF at 200

µA ≤ IREG ≤ 100 mA.

• Pin compatible family TDA3662 to TDA3666

• Protections:

– Reverse polarity safe (down to

−25 V without high

reverse current)

– Negative transient of 50 V (RS =10 Ω and

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 TDA3665 is a fixed 8.5 V voltage regulator with a very

low dropout voltage and quiescent current, which operates

over a wide supply voltage range.

The IC is available as:

• TDA3665: VP ≤ 45 V, −40 °C ≤ Tamb ≤ +125 °C and

SO4 package (automotive)

• TDA3665AT: 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

supply voltage

regulator on

TDA3665

14.4

TDA3665AT

14.4

quiescent supply current

VP = 14.4 V; IREG =0mA

−

µA

Voltage regulator

VREG

output voltage

11.5 V

≤ VP ≤ 22 V; IREG = 0.5 mA

8.08

8.5

8.92

11.5 V

≤ V

P ≤ 45 V; IREG = 0.5 mA

8.0

8.5

9.0

VP = 14.4 V;

0.5 mA

≤ IREG ≤ 100 mA

8.0

8.5

9.0

VREG(drop)

dropout voltage

VP = 7.9 V; IREG =50mA;

Tamb ≤ 85 °C

−

0.18

0.3

TYPE

NUMBER

PACKAGES

NAME

DESCRIPTION

VERSION

TDA3665

SO4

plastic small outline package; 4 leads; body width 3.5 mm

SOT223-1

TDA3665AT

SO8

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

SOT96-1

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