Very low dropout voltage/quiescent
current 3.0 V voltage regulator with
enable
Preliminary specification
File under Integrated Circuits, IC01
2000 Apr 26
Philips SemiconductorsPreliminary specification
Very low dropout voltage/quiescent current
3.0 V voltage regulator with enable
FEATURES
• Fixed 3.0 V, 100 mA regulator with enable function
• 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 nF at 200 µA ≤ I
≤ 25 mA (see Fig.6)
REG
REG
≤ 100 mA.
• Pin compatible family TDA3672 to TDA3676
• 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
– ESD protection on all pins
– DC short-circuit safe to ground and VP of the
– Temperature protection (at Tj> 150 °C).
GENERAL DESCRIPTION
The TDA3672 is a fixed 3.0 V voltage regulator with very
lowdropoutvoltageandquiescentcurrent,which operates
over a wide supply voltage range.
The IC is available as:
TDA3672AT: VP≤ 45 V; −40 °C ≤ T
SO8 package (automotive).
(supply line may be short-circuited)
regulator output
amb
TDA3672
≤ +125 °C and
QUICK REFERENCE DATA
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
Supply
V
P
I
q
supply voltageregulator on314.445V
quiescent supply currentVP= 14.4 V; I
V
=5V
I(EN)
REG
= 0 mA;
−1530µA
Voltage regulator
V
REG
V
REG(drop)
output voltage7.5 ≤ VP≤ 22 V; I
5.5 V ≤ V
V
= 14.4 V; 0.5 mA ≤ I
P
dropout voltageVP= 2.8 V; I
T
amb
P
≤ 85 °C
≤ 45 V; I
REG
= 0.5 mA2.843.03.16V
REG
= 0.5 mA2.813.03.19V
REG
≤ 100 mA 2.813.03.19V
REG
=50mA;
−0.180.3V
ORDERING INFORMATION
TYPE
NUMBER
NAMEDESCRIPTIONVERSION
PACKAGE
TDA3672ATSO8plastic small outline package; 8 leads; body width 3.9 mmSOT96-1
2000 Apr 262
Philips SemiconductorsPreliminary specification
Very low dropout voltage/quiescent current
3.0 V voltage regulator with enable
BLOCK DIAGRAM
handbook, halfpage
V
EN
8
P
5
BAND GAP
TDA3672
2, 3, 6, 7
GND
REGULATOR
THERMAL
PROTECTION
MBL122
TDA3672
1
REG
Fig.1 Block diagram.
PINNING
SYMBOLPINDESCRIPTION
REG1regulator output
GND2, 3, 6 and 7ground; note 1
n.c.4not connected
EN5enable input
V
P
8supply voltage
Note
1. 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.
th(j-a)
The ground plane on the top side of the PCB acts like
a heat spreader.
handbook, halfpage
REG
GND
n.c.
1
2
3
4
TDA3672
MBL123
V
8
P
GNDGND
7
GND
6
EN
5
2000 Apr 263
Fig.2 Pin configuration.
Philips SemiconductorsPreliminary specification
Very low dropout voltage/quiescent current
TDA3672
3.0 V voltage regulator with enable
FUNCTIONAL DESCRIPTION
The TDA3672 is a fixed 3.0 V regulator which can deliver
output currents up to 100 mA. The regulator is available in
an SO8 package with fused centre pins connected to the
lead frame. 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.
The regulator remains operating down to very low supply
voltages and below this voltage it switches off.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
SYMBOLPARAMETERCONDITIONSMIN.MAX.UNIT
V
V
P
T
T
T
P
P(rp)
tot
stg
amb
j
supply voltage−45V
reverse polarity supply voltagenon-operating−−25V
total power dissipationtemperature of copper area
A temperature protection 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 20 Ω (see Fig.5). If only a 100 nF capacitor is used, the
regulator is fully stable when I
> 200 µA. This is very
REG
attractive as the ESR of an electrolytic capacitor increases
strongly at low temperatures (no expensive tantalum
capacitor is required).
−4.1W
is 25 °C
THERMAL CHARACTERISTICS
SYMBOL PARAMETERCONDITIONSVALUE UNIT
R
R
th(j-a)
th(j-c)
thermal resistance from junction to ambientin free air; soldered in125K/W
thermal resistance from junction to caseto centre pins; soldered in30K/W
QUALITY SPECIFICATION
In accordance with
“SNW-FQ-611E”
.
2000 Apr 264
Philips SemiconductorsPreliminary specification
Very low dropout voltage/quiescent current
TDA3672
3.0 V voltage regulator with enable
CHARACTERISTICS
VP= 14.4 V; T
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
Supply voltage: pin V
V
P
I
q
Enable input: pin EN
V
I(EN)
I
I(EN)
Regulator output: pin REG; note 2
V
REG
V
REG(drop)
V
REG(stab)
∆V
REG(line)
∆V
REG(load)
SVRRsupply voltage ripple rejectionf
I
REG(crl)
I
LO(rp)
=25°C; measured in test circuit (see Fig.3); unless otherwise specified.
amb
P
supply voltageregulator operating; note 1314.445V
quiescent currentVP= 14.4 V; I
V
=0V
I(EN)
= 14.4 V; I
V
P
V
=5V
I(EN)
5.5 V ≤ V
5.5 V ≤ V
P
P
enable input voltageenable off; V
enable on; V
enable input currentV
=5V−0.3−µA
I(EN)
output voltage7.5 V ≤ VP≤ 22 V; I
0.5 mA ≤ I
T
amb
5.5 V ≤ V
T
amb
REG
≤ 125 °C
P
≤ 125 °C
dropout voltageVP= 2.8 V; I
T
≤ 85 °C
amb
long-term output voltage
= 0 mA;
REG
= 0 mA;
REG
≤ 22 V; I
≤ 22 V; I
REG
REG
=10mA−0.20.5mA
REG
=50mA−1.42.5mA
REG
≤ 0.8 V−1−+1.0V
≥ 2.7 V3.0−18V
= 0.5 mA2.843.03.16V
REG
≤ 100 mA;
≤ 45 V;I
REG
= 0.5 mA;
REG
=50mA;
−415µA
−1530µA
2.813.03.19V
2.813.03.19V
−0.180.3V
−20−mV/1000 h
stability
line regulation voltage6.5 V ≤ VP≤ 22 V; I
6.5 V ≤ V
load output regulation voltage0.5 mA ≤ I
= 120 Hz; V
i
I
REG
current limitV
output leakage current at
REG
VP= −15 V; V
≤ 45 V; I
P
≤ 50 mA−1050mV
REG
i(ripple)
= 0.5 mA
> 2.5 V0.170.25−A
REG
= 0.5 mA−130mV
REG
= 0.5 mA−150mV
REG
= 1 V (RMS);
5060−dB
≤ 0.3 V−1500µA
reverse polarity input
Notes
1. The regulator output will follow V
if VP<V
P
REG+VREG(drop)
.
2. Limiting values as applicable for device type TDA3672AT: VP≤ 45 V and −40 °C ≤ T
2000 Apr 265
≤ +125 °C.
amb
Loading...
+ 11 hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.