TCV7108FN datasheet(2/16 Pages) TOSHIBA

2 / 16 page

TCV7108FN

2011-10-03

Ordering Information

Part Number

Shipping

TCV7108FN (TE85L, F) Embossed tape (3000 units per reel)

Block Diagram

Pin Description

Pin No.

Symbol

Description

PGND

Ground pin for the output section

VIN1

Input pin for the output section

This pin is placed in the standby state if VEN=”L”. Standby current is 10 A or less.

VIN2

Input pin for the control section

This pin is placed in the standby state if VEN=”L”. Standby current is 10 A or less.

SGND

Ground pin for the control section

VFB

Feedback pin

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

Soft-start pin

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

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

A (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 VEN=”L” and in case of undervoltage lockout or thermal

shutdown.

Enable pin

When EN

 1.5 V (@ VIN  5 V), the internal circuitry is allowed to operate and thus enable the

switching operation of the output section. When EN

 0.5 V (@ VIN  5 V), the internal circuitry is

disabled, putting the TCV7108FN in Standby mode.

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

.

Switch pin

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

Driver

Control logic

Current detection

PGND

VFB

Constant-current

source (8

A)

SGND

Phase compensation

Slope

Compensation

Soft Start

Error amplifier

Under

voltage

lockout

Ref. Voltage (0.8V)

Oscillator

Short-Circuit

Protection

VIN1

VIN2

TCV7108FN датащи(PDF) 2 Page - Toshiba Semiconductor

TCV7108FN датащи(HTML) 2 Page - Toshiba Semiconductor

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

датащи скачать

ссылки URL