TLE 4274 V10Q67000-A9258P-TO220-3-1
TLE 4274 V85Q67000-A9257P-TO220-3-1
TLE 4274 V50Q67000-A9256P-TO220-3-1
TLE 4274 D V50Q67006-A9331P-TO252-3-1
TLE 4274 G V10Q67006-A9261P-TO263-3-1
TLE 4274 G V50Q67006-A9259P-TO263-3-1
TLE 4274 G V85Q67006-A9260P-TO263-3-1
SMD = Surface Mounted Device
Functional Description
The TLE 4274 is a low-drop voltage regulator in a
TO220 package. The IC regulate s an inpu t vol tage up
to 40 V to
V
= 5.0 V (V50), 8.5 V (V85) and 10 V
Qrated
(V10). The maximum output current is 400 mA. The IC
is short-circuit proof and incorporates temperature
protection that disables the IC at over temperature.
P-TO252-3-1
P-TO263-3-1
Dimensioning Information on External Components
C
The input capacitor
approx. 1Ω in series with
be damped. The output capacitor
Stability is guaranteed at values
is necessary for compensating line influences. Using a resistor of
I
, the oscillating of input inductivity and input capacitance can
C
I
C
is necessary for the stability of the regulation circuit.
Q
C
≥ 22 µF and an ESR of ≤ 3 Ω within the operating
Q
temperature range.
Semiconductor Group11998-11-01
Page 2
TLE 4274
Circuit Description
The control amplifier compares a reference voltage to a voltage that is proportional to the
output voltage and drives the base of the series transistor via a buffer. Saturation control
as a function of the load current prevents any oversaturation of the power element. The
IC also incorporates a number of internal circuits for protection against:
• Overload
• Overtemperature
• Reverse polarity
Pin Configuration (top view)
P-TO220-3-1
GND
Ι
Q
AEP01957
P-TO252-3-1
GND
Ι
Q
AEP02512
P-TO263-3-1
GNDΙQ
AEP02281
Figure 1
Pin Definitions and Functions
Pin No.SymbolFunction
1IInput; block to ground directly at the IC with a ceramic
capacitor.
2GNDGround
3Q Output; block to ground with a ≥ 22 µF capacitor.
Semiconductor Group21998-11-01
Page 3
TLE 4274
1
Ι
Figure 2
Block Diagram
Temperature
Sensor
Bandgap
Reference
Control
Amplifier
Buffer
Saturation
Control and
Protection
Circuit
2
GND
AEB01959
3
Q
Semiconductor Group31998-11-01
Page 4
TLE 4274
Absolute Maximum Ratings
T
= – 40 to 150 °C
j
ParameterSymbolLimit ValuesUnitTest Condition
min.max.
Voltage Regulator
Input
Voltage
Current
V
I
I
I
–4245
––
V
–
–
Internally limited
Output
Voltage
Current
V
I
Q
Q
–1.040V–
–––Internally limited
Ground
Current
I
GND
–100mA–
Temperature
Junction temperature
Storage temperature
T
j
T
stg
–150°C–
–50150°C–
Note: Maximum ratin gs are absolute ratings; exceeding any one of these values may
cause irreversible damage to the integrated circuit.
Operating Range
ParameterSymbolLimit ValuesUnitRemarks