SGS Thomson Microelectronics TDA7275A Datasheet
.EXCELLENTVERSATILITYIN USE
.HIGHOUTPUTCURRENT (upto 1.5 A)
.
LOW QUIESCENTCURRENT
.LOWREFERENCE VOLTAGE(1.32V)
.
EXCELLENTPARAMETERS STABILITYVERSUSAMBIENTTEMPERATURE
.
START/STOPFUNCTION (TTL levels)
.DUMPPROTECTION
TDA7275A
MOTORSPEED REGULATOR
DES CRIP TION
TheTDA7275Ais a linearintegratedcircuitinminidip plasticpackage.It is intendedfor useasspeed
regulatorforDCmotorsof recordplayers,tape and
cassetterecorders.
Thedumpprotectionmakeitparticularlysuitablefor
car radioapplications.
PIN CONNE CTION (top view)
MINIDIP
(4 + 4 )
ORDERING NUMBER : TDA7275A
May 1997
1/9
TD A 7275A
SCHEMATI C DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
Supply Voltage 19 V
V
S
Peak Supply Voltage (for 50ms) 45 V
V
S
Maximum Output Current 1.5 A
I
M
Operating Temperature Range –30 to +85 °C
T
op
Power Dissipation at T
P
tot
at T
amb
pins
=70°C
=70°C
1
4
THERMAL DATA
Symbol Parameter Value Unit
R
thj-amb
R
thj-pins
Thermal Resistance Junction-ambient
Max.
Thermal Resistance Junction -pins Max.
80
20
C/W
°
C/W
°
W
W
2/7
TD A7275A
ELECTRICAL CHARACTERISTICS (Refer to test circuit, VS= 12V, T
=25°C unless otherwise
amb
specified, refer to test circuit)
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
V
I
q+Id
I
I
ms
V
K=I
∆K⁄ ∆V
K
∆K ⁄∆I
K
∆K⁄∆
K
V
∆
ref
V
∆V
ref
V
V
∆
ref
V
V
Supply Voltage Range 8 18 V
S
Reference Voltage IM= 0.1A 1.05 1.22 1.35 V
ref
Total Quiescent Current IM= 0.1mA 2 mA
Quiescent Current IM= 0.1mA 1 mA
d
Starting Motor Current
Saturation Voltage IM= 0.5A 1.7 2 V
4
Reflection coefficient IM= 0.1A 18 20 22 –
M/IT
S
M
T
⁄
V
Line Regulation IM= 0.1A
∆
S
ref
⁄
∆I
Load Regulation IM= 25 to 200mA –0.01 %/mA
M
ref
⁄
T
Temperature Coefficient IM= 0.1A
∆
ref
Motor ”Stop” (Acc. Following
2
V
∆
ref
–50%
=
V
ref
I
= 0.1A
M
= 8 to 16V
V
S
I
= 25 to 200mA –0.05 %/mA
M
= 0.1A
I
M
= –30 to +85°C
T
op
= 8 to 16V
V
S
= –30 to +85°C
T
op
1A
0.5 %/V
0.02 %/°C
0.04 %/V
0.02 %/°C
1V
data or grounded)
I
V
Motor ”Stop” V2 = 1V –0.05 mA
2
Motor ”Run” (Acc. Following
2
data or open)
I
Motor ”Run” V2 = 1.5V –0.1 mA
2
1.5 V
3/7
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