Siemens TLE4274V10, TLE4274GV85, TLE4274GV50, TLE4274DV50, TLE4274GV10 Datasheet

P-TO220-3-1

P-TO252-3-1

P-TO263-3-1

Low-Drop Voltage Regulator TLE 4274

Semiconductor Group 1 1998-11-01

Features

• Output voltage tolerance ≤ ± 4 %

• Low-drop voltage

• Very low current consumption

• Short-circuit proof

• Reverse polarity proof

• Suitable for use in automotive electronics

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

Qrated

= 5.0 V (V50), 8.5 V (V85) and 10 V

(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.

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

Dimensioning Information on External Components

The input capacitor

C

I

is necessary for compensating line influences. Using a resistor of

approx. 1

Ω

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 circuit.

Stability is guaranteed at values

C

Q

≥ 22 µF and an ESR of ≤ 3 Ω within the operating

temperature range.

TLE 4274

Semiconductor Group 2 1998-11-01

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)

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.

GND

AEP01957

Ι

Q

P-TO220-3-1

P-TO263-3-1

GND

Ι

Q

AEP02281

P-TO252-3-1

AEP02512

Ι

GND

Q

TLE 4274

Semiconductor Group 3 1998-11-01

Figure 2

Block Diagram

Ι

1

AEB01959

GND

2

Q

3

Bandgap

Reference

Control

Amplifier

Sensor

Temperature

Buffer

Saturation

Control and

Protection

Circuit

TLE 4274

Semiconductor Group 4 1998-11-01

Note: Maximum ratin gs are absolute ratings; exceeding any one of these values may

cause irreversible damage to the integrated circuit.

Absolute Maximum Ratings

T

j

= – 40 to 150 °C

Parameter Symbol Limit Values Unit Test Condition

min. max.

Voltage Regulator

Input

Voltage

V

I

–42 45

V

–

Current

I

I

––

–

Internally limited

Output

Voltage

V

Q

–1.0 40 V –

Current

I

Q

– – – Internally limited

Ground

Current

I

GND

–100mA–

Temperature

Junction temperature

T

j

–150°C–

Storage temperature

T

stg

–50 150 °C–

Operating Range

Parameter Symbol Limit Values Unit Remarks

min. max.

Input voltage

V

I

5.5

9.0/10.5

40

40/40

V

V50

V85/V10

Junction temperature

T

j

–40 150 °C–

Thermal Resistance

Junction ambient

R

thja

–65K/WTO220

Junction ambient

R

thja

–70K/WTO252

1)

, TO263

1)

Soldered in, min. footprint

Junction case R

thjc

–4K/W–