Low-Drop Voltage Regulator
TLE 4276
Features
Type
TLE 4276 V50
TLE 4276 V85
TLE 4276 V10
TLE 4276 V
TLE 4276 S V50
TLE 4276 S V85
TLE 4276 S V10
TLE 4276 SV
Ordering Code Package
Q67000-A9262
Q67000-A9263
Q67000-A9264
Q67000-A9265
Q67000-A9267
Q67000-A9269
Q67000-A9271
Q67000-A9273
P-TO220-5-3
P-TO220-5-3
P-TO220-5-3
P-TO220-5-3
P-TO220-5-43
P-TO220-5-43
P-TO220-5-43
P-TO220-5-43
P-TO220-5-122
P-TO220-5-122
P-TO220-5-122
P-TO220-5-122
P-TO252-5-1
P-TO252-5-1
P-TO 220-5-122
(TO-220 AB/5, Option E3122)
TLE 4276 G V50 Q67006-A9266
TLE 4276 G V85 Q67006-A9268
TLE 4276 G V10 Q67006-A9270
TLE 4276 GV
TLE 4276 D V50
TLE 4276 DV
Q67006-A9272
Q67006-A9369
Q67006-A9361
SMD = Surface Mounted Device
New type
P-TO252-5-1
Data Sheet Version 2.2
®
•
•
•
•
•
•
•
•
•
5 V, 8.5 V, 10 V or variable output voltage
4%
Output voltage tolerance
400 mA current capability
Low-drop voltage
Inhibit input
Very low current consumption
Short-circuit-proof
Reverse polarity proof
Suitable for use in automotive electronics
P-TO220-5-3
P-TO-220-5-43
1
2000-10-11
TLE 4276
Functional Description
The TLE 4276 is a low-drop voltage regulator in a TO package. The IC regulates an input
voltage up to 40 V to
V
Q,nom
= 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 A. The IC is short-circuit-
proof and includes temperature protection which turns off the device at overtemperature.
Dimensioning Information on External Components
The input capacitor
C
I
is necessary for compensation of line influences. Using a resistor
of approx. 1 in series with
C
I
, the oscillating of input inductivity and input capacitance
can be damped. The output capacitor
C
Q
is necessary for the stability of the regulation
within the
circuit. Stability is guaranteed at values
C
Q
22 F and an ESR of 3
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
Data Sheet Version 2.2
2
τ ®
←
←
∫
τ
2000-10-11
TLE 4276
P-TO220-5-3
P-TO220-5-43
P-TO220-5-122
P-TO252-5-1
GND
1
5
Ι
Q
INH N.C.
(VA)
AEP02560
1
5
1
5
1
5
Ι
GND
INH
N.C.
(VA)
Q
AEP02043
Ι
GND
INH
N.C.
(VA)
Q
Ι
GND
INH
N.C.
(VA)
Q
AEP02041
AEP02042
Figure 1
Pin Configuration
(top view)
Pin Definitions and Functions
Pin No.
1
2
3
4
Symbol Function
I
INH
GND
N.C.
VA
Q
Input;
block to ground directly at the IC with a ceramic capacitor.
Inhibit;
low-active input
Ground
Not connected
for V50, V85, V10
Voltage Adjust Input;
only for adjustable version connect an
external voltage divider to determine the output voltage.
Data Sheet Version 2.2
3
2000-10-11
=τ ∫
←
∫
5
Output;
block to ground with a capacitor of
C
at 10 kHz.
22 F, ESR
3
TLE 4276
Temperature
Sensor
Saturation
Control and
Protection
Circuit
6
Control
Amplifier
Q
Ι
1
Buffer
Bandgap
Reference
*)
**)
2
INH
*) For fixed Voltage Regulator only
**) For adjustable Voltage Regulator only
4
VA
3
GND
AEB02044
Figure 2
Block Diagram
Data Sheet Version 2.2
4
2000-10-11
TLE 4276
Absolute Maximum Ratings
Parameter
Symbol
Limit Values
min.
Voltage Regulator
Input I
Voltage
Current
Inhibit INH
Voltage
Voltage Adjust Input VA
Voltage
Output Q
Voltage
Current
Ground GND
Current
Temperature
max.
Unit Test Condition
V
I
I
I
– 42
–
45
–
V
–
–
Internally limited
V
INH
– 42
45
V
–
V
VA
– 0.3
10
V
–
V
Q
I
Q
– 1.0
–
40
–
V
–
–
Internally limited
I
GND
–
100
mA
–
Storage temperature
– 50
150
Note: Maximum ratings are absolute ratings; exceeding any one of these values may
cause irreversible damage to the integrated circuit.
Data Sheet Version 2.2
5
Junction temperature
T
j
T
stg
– 40
150
C
C
–
–
2000-10-11
