RT5713 datasheet(5/25 Pages) RICHTEK

5 / 25 page

RT5713/14

is a registered trademark of Richtek Technology Corporation.

DS5713/14-03

March 2023

www.richtek.com

Functional Block Diagram

Gate

Drive

PSM/PWM

Control

VREF

Digital

Control

GND

OSC

OTP

UVLO

OCP

VIN

Soft-start

AMP

VREF

Fast

Discharge

VOUT

VSEL

Operation

The RT5713/14 is a hysteretic constant on time (HCOT)

switching buck converter. The RT5713/14 provides

Over-Temperature Protection (OTP) and Over-Current

Protection (OCP) mechanisms to prevent the device

from damage with abnormal operations. When the EN

voltage is logic low, the IC will be shut down with low

input supply current less than 1

A.

Enable

The device can be enabled or disabled by the EN pin.

When the EN pin is higher than the threshold of logic-

high IC goes to normal operation. EN pin High transfer

Low into shutdown mode, the converter stops switching,

internal control circuitry is turned off and trigger

discharge function. That discharge function will close

after count 10ms (typ.). If systems need EN toggle

operation that EN turn off time must larger than 100

s

for internal circuit reset time.

UVLO Protection

To protect the chip from operating at insufficient supply

voltage, the UVLO is needed. When the input voltage is

lower than the UVLO falling threshold voltage, the

device will be lockout.

100% Duty Cycle Operation

The converter enters 100% duty cycle operation once

the input voltage decrease and the difference voltage

between input and output is lower than VTH_100-. The

output voltage follows the input voltage minus the

voltage drop across the internal P_MOSFET and the

inductor. Once the input voltage increases and trips the

100% mode exit threshold, VTH_100+, the converter

backs to normal switching again. See Figure 1.

RT5713 Datasheet(PDF) 5 Page - Richtek Technology Corporation

RT5713 Datasheet(HTML) 5 Page - Richtek Technology Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Datasheet Download

Link URL