Siemens TLE4262GM, TLE4262G Datasheet

5-V Low Drop Voltage Regulator TLE 4262

Bipolar IC

Features

● Output voltage tolerance ≤ ± 2 %

● Low-drop voltage

● Very low standby current consumption

● Overtemperature protection

● Reverse polarity protection

● Short-circuit proof

● Settable reset threshold

● Wide temperature range

● Suitable for use in automotive electronics

P-DSO-20-6

Type Ordering Code Package

TLE 4262 G Q67006-A9068 P-DSO-20-6 (SMD)
TLE 4262 GM Q67006-A9356 P-DSO-14-4 (SMD)

▼

▼ New type

P-DSO-14-4

Functional Description

TLE 4262 G is a 5-V low-dr op voltage regulator in a P-DSO-20 -6 SMD package. The
maximum input voltage is 45 V. The maximum output current is more than 200 mA. The
IC is short-circuit proof and incorporates temperature protectio n that disables the IC at
overtemperature.

V

The IC regulates an input voltag e

in the range of 6 V < VI < 45 V to V

I

reset signal is generated for an output voltage of

V

< 4.5 V. This voltage threshold can

Q

= 5.0 V. A

Qrated

be decreased to 3.5 V by external connection. The reset delay can be set externally with
a capacitor. The IC can b e switched off via the inhi bit input, which causes th e current
consumption to drop from 720 µA to < 50 µA.

Semiconductor Group 1 1998-11-01

TLE 4262

Dimensioning Information on External Components

C

The input capacitor
approx. 1 Ω in series with
capacitance can be dam ped. The output capacitor is necess ary for the stability of the
regulating circuit. Stability is guaranteed at values ≥ 22 µF and an ESR of ≤ 3 Ω wi thin
the operating temperature ran ge. For sm all tole rances o f the rese t delay, the spread of
the capacitance of the dalay capacitor and its temperature coefficient should be noted.

Pin Configuration

(top view)

is necessary for compensating line influences. Using a resistor of

I

C

, the oscillating circuit consisting of input inductivity and input

I

TLE 4262 G

INH

QRES

GND
GND
GND

DRES

SRES

TLE 4262 GM

1
2
3
4
5
6
7

14
13
12
11
10

9
8

AEP02588

V

Ι

N.C.
GND
GND
GND
N.C.

V

Q

Semiconductor Group 2 1998-11-01

TLE 4262

Pin Definitions and Functions
Pin Symbol Function

1INHInhibit; TTL-compatible, low-active input
2QRESReset output; open-collector output internally connected to

the output via a resistor of 30 kΩ.
4-7, 14-17 GND Ground
9DRESReset delay; connected to ground by a capacitor
10 SRES Reset threshold; for setting the switching threshold connect

by a voltage divider from output to ground. If this input is

connected to GND, reset is triggered at an output voltage of

4.5 V.
11
20

3, 8, 12,
13, 18, 19

V
V

Q

I

5-V output voltage; block to ground by a 22−µF capacitor.
Input voltage; block to ground directly at the IC by a ceramic

capacitor.

N.C. Not connected

Semiconductor Group 3 1998-11-01

TLE 4262

Circuit Description

The control amplifier compares a reference voltage, which is kept highly accurate by
resistance adjustment, to a volt age that is proportion al to the output voltag e and drives
the base of the series transistor via a buffer. Saturation control as a function of the load
current prevents any over-saturation of the power element. If the externally scaled down
output voltage at the reset threshold inp ut drops below 1.3 5 V, the external reset delay
capacitor is discharged by the reset generator. If the voltage on the capaci tor reaches

V

the lower threshold
again until the upper threshold
to GND, reset is triggered at an output voltag e of 4.5 V. The IC can be switched at the
TTL-compatible, low-active inhibit input. It also incorporates a number of internal circuits
for protection against:

● Overload

● Overtemperature

● Reverse polarity

, a reset signal is issued on the reset output and not cancelled

ST

V

is exceeded. If the reset threshold input is connected

dT

Block Diagram

Semiconductor Group 4 1998-11-01

TLE 4262

Absolute Maximum Ratings
Parameter Symbol Limit Values Unit Remarks

min. max.

Input

Input voltage
Input current

Reset Output

Voltage
Current

Reset Input

Reset threshold

Reset Delay

Voltage
Current

V
I

V
I

V

V
I

I

I

R

R

RE

d

d

–42
–

– 0.3
–

– 0.3 6 V –

–0.3
–

45
–

42
–

42
–

V
–

V
–

V
–

–
internally limited

–
internally limited

–
internally limited

Output

Voltage
Current

V
I

Q

Q

–5.25
–

V

–

I

V
–

–
internally limited

Inhibit

Voltage

V

e

–42 45 V –

Ground

Current

Semiconductor Group 5 1998-11-01

I

GND

–0.5 – A –