TDA3665 Ver la hoja de datos (PDF) - Philips Electronics
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TDA3665 Datasheet PDF : 20 Pages
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Philips Semiconductors
Very low dropout voltage/quiescent current
8.5 V voltage regulator
Preliminary specification
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
SYMBOL
PARAMETER
Supply
VP
supply voltage
TDA3665
TDA3665AT
Iq
quiescent supply current
Voltage regulator
VREG
output voltage
VREG(drop)
dropout voltage
CONDITIONS
MIN. TYP. MAX. UNIT
regulator on
VP = 14.4 V; IREG = 0 mA
3
14.4 45
V
3
14.4 45
V
−
15
30
µA
11.5 V ≤ VP ≤ 22 V; IREG = 0.5 mA 8.08 8.5 8.92 V
11.5 V ≤ VP ≤ 45 V; IREG = 0.5 mA 8.0 8.5 9.0 V
VP = 14.4 V;
0.5 mA ≤ IREG ≤ 100 mA
8.0 8.5 9.0 V
VP = 7.9 V; IREG = 50 mA;
Tamb ≤ 85 °C
−
0.18 0.3 V
ORDERING INFORMATION
TYPE
NUMBER
TDA3665
TDA3665AT
NAME
SO4
SO8
PACKAGES
DESCRIPTION
plastic small outline package; 4 leads; body width 3.5 mm
plastic small outline package; 8 leads; body width 3.9 mm
VERSION
SOT223-1
SOT96-1
2000 Apr 25
2
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