Data Sheet

5

Rev. 1.2, 2009-11-18

TLE4254

Pin Definitions and Functions

3.3

Pin Assignment TLE4254EJ A and TLE4254EJ S

Figure 4

Pin Configurations TLE4254EJ A and TLE4254EJ S

3.4

Pin Functions TLE4254EJ A and TLE4254EJ S

Pin

Symbol

Function

1Q

Tracker Output.

Block to GND with a capacitor close to the IC terminals, respecting capacitance and ESR

requirements given in the table “Functional Range”.

2, 3,

7

n.c.

not connected

connect to GND

4FB

(version EJ A)

Feedback input (version EJ A only).

Non inverting input of the internal error amplifier to control the output voltage.

Connect this pin directly to the output pin in order to obtain lower or equal output voltages

with respect to the reference voltage.

Connect a voltage divider for higher output voltages than the reference.

(See also application information.)

4ST

(version EJ S)

Tracking Regulator Status Output (version GS only).

Open collector output. Connect via a pull-up resistor to a positive voltage rail.

A low signal indicates fault condions at the regulator’s output.

5EN/ADJ

Adjust / Enable.

Connect the reference to this pin. The active high signal of the reference turns on the

device; a low signal disables the IC. The reference voltage can be connected directly or by

a voltage divider for lower output voltages (see application information).

6GND

Ground reference.

Interconnect the pins on PCB. Connect to heatsink area.

8I

Input.

IC supply. For compensating line influences, a capacitor close to the IC terminals is

recommended.

Pad

–

Exposed Pad

connect to GND