TCV7101F

2011-10-27

2

Ordering Information

Part Number

Shipping

TCV7101F (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 1 ms (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 = low 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 0.8 V (typ.).

6

EN

Enable pin

disabled, putting the TCV7101F in Standby mode.

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

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

ジ

Under

voltage

lockout

Constant-current

source (8 μA)

GND

+

-

Phase compensation

Soft start

Error amplifier

Ref. voltage (0.8 V)

EN

SS

-

Short-Circuit

protection

Driver

Oscillator