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Low-Drop Voltage Regulator
TLE 4276
Features
• Output voltage tolerance ≤ ± 4%
• Low-drop voltage
• Inhibit input
• Very low current consumption
• Short-circuit-proof
• Reverse polarity proof
• Suitable for use in automotive electronics
Type
Ordering Code Package
TLE 4276 V50 Q67000-A9262 P-TO220-5-3
TLE 4276 V85 Q67000-A9263 P-TO220-5-3
TLE 4276 V10 Q67000-A9264 P-TO220-5-3
TLE 4276 G V50 Q67006-A9266 P-TO220-5-122
TLE 4276 G V85 Q67006-A9268 P-TO220-5-122
TLE 4276 G V10 Q67006-A9270 P-TO220-5-122
TLE 4276 S V50 Q67000-A9267 P-TO220-5-43
TLE 4276 S V85 Q67000-A9269 P-TO220-5-43
TLE 4276 S V10 Q67000-A9271 P-TO220-5-43
TLE 4276 V
Q67000-A9265 P-TO220-5-3
TLE 4276 SV Q67000-A9273 P-TO220-5-43
TLE 4276 GV Q67006-A9272 P-TO220-5-122
w TLE 4276 D V50 Q67006-A9358 P-TO252-5-1
w TLE 4276 DV Q67006-A9361 P-TO252-5-1
SMD = Surface Mounted Device
w New type
P-TO220-5-3
P-TO220-5-43
P-TO220-5-122
Semiconductor Group
P-TO252-5-1 (D-PAK)
1 1998-11-01
Free Datasheet http://www.datasheet4u.net/

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TLE 4276
Functional Description
The TLE 4276 is a low-drop voltage regulator in a TO220 package. The IC regulates an
input voltage up to 40 V to VQrated = 5.0 V (V50), 8.5 V (V85), 10 V (V10) and adjustable
voltage (V). The maximum output current is 400 mA. The IC can be switched off via the
inhibit input, which causes the current consumption to drop below 10 µA. The IC is short-
circuit-proof and incorporates temperature protection that disables it at over-tempera-
ture.
Dimensioning Information on External Components
The input capacitor CI is necessary for compensating line influences. Using a resistor of
approx. 1 in series with CI, the oscillating of input inductivity and input capacitance can
be damped. The output capacitor CQ is necessary for the stability of the regulation circuit.
Stability is guaranteed at values CQ 22 µF and an ESR of 3 within the operating
temperature range.
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
Semiconductor Group
2
1998-11-01
Free Datasheet http://www.datasheet4u.net/

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TLE 4276
Pin Configuration
(top view)
P-TO220-5-3
P-TO220-5-43
P-TO220-5-122
P-TO252-5-1
GND
1
51
5
ΙQ
1
51
5 Ι GND Q
INH N.C.
(VA)
INH N.C.
AEP02043
AEP02560
Ι GND Q
INH N.C.
(VA)
AEP02041
Ι GND Q
INH N.C.
(VA)
AEP02042
Figure 1
Pin Definitions and Functions
Pin No. Symbol Function
1 I Input; block to ground directly at the IC with a ceramic capacitor.
2 INH Inhibit; low-active input
3 GND Ground
4 N.C. Not connected for V50, V85, V10
VA Voltage Adjust Input; only for adjustable output from external
voltage divider.
5 Q Output; block to ground with a 22 µF capacitor.
Semiconductor Group
3
1998-11-01
Free Datasheet http://www.datasheet4u.net/

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TLE 4276
Temperature
Sensor
1
Ι
Bandgap
Reference
Control
Amplifier
2
INH
*) For fixed Voltage Regulator only
**) For adjustable Voltage Regulator only
Saturation
Control and
Protection
Circuit
Buffer
6
Q
*)
**)
43
VA GND
AEB02044
Figure 2
Block Diagram
Semiconductor Group
4
1998-11-01
Free Datasheet http://www.datasheet4u.net/

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TLE 4276
Absolute Maximum Ratings
Tj = – 40 to 150 °C
Parameter
Symbol
Limit Values
min.
max.
Unit Test Condition
Voltage Regulator
Input
Voltage
Current
VI – 42 45
II
V
– Internally limited
Inhibit
Voltage
VINH
– 42
45
V–
Voltage Adjust Input
Voltage
VVA
– 0.3
10
V–
Output
Voltage
Current
VQ
– 1.0
40
IQ
V–
– Internally limited
Ground
Current
IGND
100 mA –
Temperature
Junction temperature
Tj
150
Storage temperature Tstg – 50 150
°C –
°C –
Note: Maximum ratings are absolute ratings; exceeding any one of these values may
cause irreversible damage to the integrated circuit.
Semiconductor Group
5
1998-11-01
Free Datasheet http://www.datasheet4u.net/