Siemens TLE4274V10, TLE4274GV85, TLE4274GV50, TLE4274DV50, TLE4274GV10 Datasheet
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Low-Drop Voltage Regulator TLE 4274
Features
• Output voltage tolerance ≤ ± 4 %
• Low-drop voltage
• Very low current consumption
• Short-circuit proof
• Reverse polarity proof
• Suitable for use in automotive electronics
P-TO220-3-1
Type Ordering Code Package
TLE 4274 V10 Q67000-A9258 P-TO220-3-1
TLE 4274 V85 Q67000-A9257 P-TO220-3-1
TLE 4274 V50 Q67000-A9256 P-TO220-3-1
TLE 4274 D V50 Q67006-A9331 P-TO252-3-1
TLE 4274 G V10 Q67006-A9261 P-TO263-3-1
TLE 4274 G V50 Q67006-A9259 P-TO263-3-1
TLE 4274 G V85 Q67006-A9260 P-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 Group 1 1998-11-01
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. Symbol Function
1 I Input; block to ground directly at the IC with a ceramic
capacitor.
2GNDGround
3Q Output; block to ground with a ≥ 22 µF capacitor.
Semiconductor Group 2 1998-11-01
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 Group 3 1998-11-01
TLE 4274
Absolute Maximum Ratings
T
= – 40 to 150 °C
j
Parameter Symbol Limit Values Unit Test Condition
min. max.
Voltage Regulator
Input
Voltage
Current
V
I
I
I
–42 45
––
V
–
–
Internally limited
Output
Voltage
Current
V
I
Q
Q
–1.0 40 V –
– – – Internally limited
Ground
Current
I
GND
–100mA–
Temperature
Junction temperature
Storage temperature
T
j
T
stg
–150°C–
–50 150 °C–
Note: Maximum ratin gs are absolute ratings; exceeding any one of these values may
cause irreversible damage to the integrated circuit.
Operating Range
Parameter Symbol Limit Values Unit Remarks
min. max.
Input voltage
Junction temperature
V
T
I
j
5.5
9.0/10.54040/40
V
V50
V85/V10
–40 150 °C–
Thermal Resistance
Junction ambient
Junction ambient
Junction case R
1)
Soldered in, min. footprint
Semiconductor Group 4 1998-11-01
R
R
thja
thja
thjc
–65K/WTO220
–70K/WTO252
1)
, TO263
–4K/W–
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