Philips TDA3665AT, TDA3665 Datasheet
INTEGRATED CIRCUITS
DATA SH EET
TDA3665
Very low dropout voltage/quiescent
current 8.5 V voltage regulator
Preliminary specification
File under Integrated Circuits, IC01
2000 Apr 25
Philips Semiconductors Preliminary specification
Very low dropout voltage/quiescent current
8.5 V voltage regulator
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 I
– Other capacitors: 100 nFat 200 µA ≤ I
≤ 25 mA (see Fig.6)
REG
REG
≤ 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=10Ω 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
– Temperature protection (at Tj> 150 °C).
GENERAL DESCRIPTION
The TDA3665is afixed 8.5 V voltage regulator with a very
lowdropoutvoltage and quiescent current, which operates
over a wide supply voltage range.
The IC is available as:
• TDA3665: VP≤ 45 V, −40 °C ≤ T
SO4 package (automotive)
• TDA3665AT: VP≤ 45 V, −40 °C ≤ T
SO8 package (automotive).
regulator output
TDA3665
≤ +125 °C and
amb
≤ +125 °C and
amb
QUICK REFERENCE DATA
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supply
V
P
supply voltage regulator on
TDA3665 3 14.4 45 V
TDA3665AT 3 14.4 45 V
I
q
quiescent supply current VP= 14.4 V; I
=0mA − 15 30 µA
REG
Voltage regulator
V
REG
V
REG(drop)
output voltage 11.5 V ≤ VP≤ 22 V; I
11.5 V ≤ V
V
= 14.4 V;
P
0.5 mA ≤ I
dropout voltage VP= 7.9 V; I
T
amb
P
REG
≤ 85 °C
≤ 45 V; I
≤ 100 mA
=50mA;
REG
= 0.5 mA 8.08 8.5 8.92 V
REG
= 0.5 mA 8.0 8.5 9.0 V
REG
8.0 8.5 9.0 V
− 0.18 0.3 V
ORDERING INFORMATION
TYPE
NUMBER
NAME DESCRIPTION VERSION
PACKAGES
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
2000 Apr 25 2
Philips Semiconductors Preliminary specification
Very low dropout voltage/quiescent current
8.5 V voltage regulator
BLOCK DIAGRAM
handbook, halfpage
1 (8)
V
P
REGULATOR
BAND GAP
TDA3665
PROTECTION
2, 4 (2, 3, 6, 7)
GND
THERMAL
3 (1)
MBL137
TDA3665
REG
Pin numbers in brackets refer to the SO8 version.
Fig.1 Block diagram.
PINNING
PIN
SYMBOL
DESCRIPTION
SO4 SO8
V
P
1 8 supply voltage
GND 2 and 4 2, 3, 6 and 7 ground; note 1
REG 3 1 regulator output
n.c. − 4 and 5 not connected
Note
1. For the SO8 package all pins GND are connected to the lead frame and can also be used to reduce the total thermal
resistance R
by soldering these pins to a ground plane. The ground plane on the top side of the PCB acts like a
th(j-a)
heat spreader.
2000 Apr 25 3
Philips Semiconductors Preliminary specification
Very low dropout voltage/quiescent current
8.5 V voltage regulator
handbook, halfpage
GND
4
TDA3665
132
V
P
GND
REG
MGU147
handbook, halfpage
REG
GND
n.c.
1
2
TDA3665AT
3
4
MBL126
TDA3665
V
8
P
GNDGND
7
GND
6
n.c.
5
Fig.2 Pin configuration of SO4.
FUNCTIONAL DESCRIPTION
The TDA3665 is a fixed 8.5 V regulator which can deliver
output currents up to 100 mA. The regulator is available in
SO8 and SO4 packages. The regulator is intended for
portable, mains, telephone and automotive applications.
To increase the lifetime of batteries, a specially built-in
clamp circuit keeps the quiescent current of this regulator
very low, also in dropout and full load conditions.
Theregulatorremainsoperationaldown to very low supply
voltages and below this voltage it switches off.
Fig.3 Pin configuration of SO8.
Atemperatureprotection circuit is included which switches
off the regulator output at a junction temperature
above 150 °C.
A new output circuit guarantees the stability of the
regulator for a capacitor output circuit with an ESR up
to 22 Ω (see Figs 5 and 6). This is very attractive as the
ESR of an electrolytic capacitor increases strongly at low
temperatures (no expensive tantalum capacitor is
required).
2000 Apr 25 4
Philips Semiconductors Preliminary specification
Very low dropout voltage/quiescent current
TDA3665
8.5 V voltage regulator
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
V
P
V
P(rp)
P
tot
T
stg
T
amb
T
j
supply voltage
TDA3665 − 45 V
TDA3665AT − 45 V
reverse polarity supply voltage non-operating −−25 V
total power dissipation
TDA3665AT temperature of copper area
− 4.1 W
is 25 °C
TDA3665 T
=25°C − 5W
amb
storage temperature non-operating −55 +150 °C
ambient temperature operating
TDA3665 −40 +125 °C
TDA3665AT −40 +125 °C
junction temperature operating −40 +150 °C
THERMAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS VALUE UNIT
R
th(j-a)
thermal resistance from junction to ambient
SO8 in free air; soldered in 125 K/W
SO4 in free air; soldered in 100 K/W
R
th(j-c)
thermal resistance from junction to case
SO8 to centre pins; soldered in 30 K/W
SO4 in free air 25 K/W
QUALITY SPECIFICATION
In accordance with
“SNW-FQ-611E”
.
2000 Apr 25 5
Philips Semiconductors Preliminary specification
Very low dropout voltage/quiescent current
TDA3665
8.5 V voltage regulator
CHARACTERISTICS
VP= 14.4 V; T
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supply voltage: pin V
V
P
I
q
Regulator output: pin REG; note 2
V
REG
V
REG(drop)
V
REG(stab)
∆V
REG(line)
∆V
REG(load)
SVRR supply voltage ripple rejection f
I
REG(crl)
I
LO(rp)
=25°C; measured with test circuit (see Fig.4); unless otherwise specified.
amb
P
supply voltage regulator operating; note 1
TDA3665 3 14.4 45 V
TDA3665AT 3 14.4 45 V
quiescent supply current VP= 4.5 V; I
V
= 14.4 V; I
P
9.5 V ≤ V
9.5 V ≤ V
output voltage 11.5 V ≤ VP≤ to 22 V;
I
= 0.5 mA
REG
0.5 mA ≤ I
T
≤ 125 °C
amb
9.5 V ≤ V
I
= 0.5 mA; T
REG
dropout voltage VP= 7.9 V; T
I
=50mA
REG
=0mA − 10 −µA
REG
=0mA − 15 30 µA
REG
≤ 22 V; I
P
≤ 22 V; I
P
=10mA − 0.2 0.5 mA
REG
=50mA − 1.4 2.5 mA
REG
8.08 8.5 8.92 V
REG
≤ 45 V;
P
≤ 100 mA;
amb
≤ 85 °C;
amb
≤ 125 °C
8.0 8.5 9.0 V
8.0 8.5 9.0 V
− 0.18 0.3 V
output voltage long-term stability − 20 − mV/1000 h
line input regulation voltage 10.5 V ≤ VP≤ to 22 V;
I
= 0.5 mA
REG
10.5 V ≤ V
I
= 0.5 mA; T
REG
load output regulation voltage 0.5 mA ≤ I
= 120 Hz;
i
V
i(ripple)
I
= 0.5 mA
REG
output current limit V
output leakage current at
REG
VP= −15 V; V
≤ 45 V;
P
amb
≤ 50 mA − 10 50 mV
REG
= 1 V (RMS);
> 7.9 V 0.17 0.25 − A
≤ 0.3 V − 1 500 µA
REG
≤ 125 °C
− 130mV
− 150mV
50 60 − dB
reverse polarity
Notes
1. The regulator output will follow V
if VP<V
P
REG+VREG(drop)
.
2. Limiting values as applicable for both device types: VP≤ 45 V and −40 °C ≤ T
2000 Apr 25 6
≤ +125 °C.
amb
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