TCV7113F

2012-02-28

2

Ordering Information

Part Number

Shipping

TCV7113F (TE12L, Q)

Embossed tape (3000 units per reel)

Block Diagram

Pin Description

Pin No.

Symbol

Description

1

Input pin for the output section

2

Input pin for the control section

3

SS

Soft-start pin

When the SS input is left open, the soft-start time is 1ms (typ.). The soft-start time can be adjusted

with an external capacitor. The external capacitor is charged from a 8

μA (typ.) constant-current

source, and the reference voltage of the error amplifier is regulated between 0 V and 0.8 V. The

external capacitor is discharged when EN

= L and in case of undervoltage lockout or thermal

shutdown.

4

GND

Ground pin

5

Feedback pin

This input is fed into an internal error amplifier with a reference voltage of 0.8V (typ.).

6

EN

Enable pin

When EN

switching operation of the output section. When EN

disabled, putting the TCV7113F in Standby mode. Standby current is 10

μA or less.

This pin has an internal pull-down resistor of approx. 500k

Ω.

7

LSG

Gate drive pin for the low-side switch

8

Switch pin

This pin is connected to high-side P-channel MOSFET.

Control logic

Current detection

LSG

+

-

Slope

Compensation

Under

voltage

lockout

Constant-current

source (8

μA)

GND

+

-

Phase

compensation

Error amplifier

Ref. Voltage

(0.8 V)

EN

SS

-

Short-Circuit

Protection

Driver

Oscillator

+

-

Soft Start