TDA3661
Very low dropout voltage/quiescent current adjustable voltage
regulator
Rev. 05 鈥?28 June 2005
Product data sheet
1. 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.
2. Features
s
s
s
s
s
Output adjustable from 1.5 V to V
P
, 100 mA regulator
Supply voltage range up to 45 V
Very low quiescent current of 15
碌A(chǔ)
(typical value)
Very low dropout voltage
Protections:
x
Reverse polarity safe (down to
鈭?5
V without high reverse current)
x
Negative transient of 50 V (R
S
= 10
鈩?
t < 100 ms)
x
Able to withstand voltages up to 18 V at the output (supply line may be
short-circuited)
x
ESD protection on all pins
x
DC short-circuit safe to ground and V
P
of the regulator output
x
Temperature protection (at T
j
> 150
擄C)
3. Quick reference data
Table 1:
Quick reference data
T
amb
= 25
擄
C; unless otherwise speci鏗乪d.
Symbol
Supply
V
P
I
q
supply voltage
quiescent supply
current
output voltage
regulator on
V
P
= 14.4 V; I
REG
= 0 mA
3
-
14.4
15
45
30
V
碌A(chǔ)
Parameter
Conditions
Min
Typ
Max
Unit
Regulator; k = 4.01929
[1]
V
REG
8 V
鈮?/div>
V
P
鈮?/div>
22 V; I
REG
= 0.5 mA
6 V
鈮?/div>
V
P
鈮?/div>
45 V; I
REG
= 0.5 mA
0.5 mA
鈮?/div>
I
REG
鈮?/div>
100 mA
V
ref
V
REG(drop)
V
REG
= V
ref
脳
k
4.8
4.75
4.75
1.181
-
5.0
5.0
5.0
1.244
0.18
5.2
5.25
5.25
1.306
0.3
V
V
V
V
V
reference voltage
dropout voltage
V
P
= 14.4 V
V
P
= 4.5 V; I
REG
= 50 mA;
T
amb
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