TDA3661 Ver la hoja de datos (PDF) - Philips Electronics
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TDA3661 Datasheet PDF : 16 Pages
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Philips Semiconductors
Very low dropout voltage/quiescent current
adjustable voltage regulator
Preliminary specification
TDA3661
FEATURES
• Output adjustable from 1.5 V to VP, 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) < 38 Ω at IREG ≤ 25 mA
– 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, 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 TDA3661 is an adjustable voltage regulator with very
low dropout voltage and quiescent current, which operates
over a wide supply voltage range.
The IC is available as:
• TDA3661T: VP ≤ 33 V, −40 °C ≤ Tamb ≤ +85 °C and
SO8 package (non-automotive)
• TDA3661AT: VP ≤ 45 V, −40 °C ≤ Tamb ≤ +125 °C and
SO8 package (automotive).
QUICK REFERENCE DATA
SYMBOL
PARAMETER
Supply
VP
supply voltage
TDA3661T
TDA3661AT
Iq
quiescent supply current
Regulator; k = 4.01929 (note 1)
VREG
output voltage
Vref
VREG(drop)
reference voltage
dropout voltage
Note
1. VREG = Vref × k
CONDITIONS
MIN. TYP. MAX. UNIT
regulator on
VP = 14.4 V; IREG = 0 mA
3
14.4 33
V
3
14.4 45
V
−
15
30
µA
8 V ≤ VP ≤ 22 V; IREG = 0.5 mA 4.8 5.0 5.2 V
6 V ≤ VP ≤ 45 V; IREG = 0.5 mA 4.75 5.0 5.25 V
VP = 14.4 V;
0.5 mA ≤ IREG ≤ 100 mA
4.75 5.0 5.25 V
VP = 14.4 V
1.181 1.244 1.306 V
VP = 4.5 V; IREG = 50 mA
Tamb ≤ 85 °C;
−
0.18 0.3 V
ORDERING INFORMATION
TYPE
NUMBER
TDA3661T
TDA3661AT
NAME
SO8
SO8
PACKAGE
DESCRIPTION
plastic small outline package; 8 leads; body width 3.9 mm
plastic small outline package; 8 leads; body width 3.9 mm
VERSION
SOT96-1
SOT96-1
2000 Feb 01
2
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