TLV610471中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Input voltage range: 2.6V to 20V

? Output voltage range: 4.5V to 28V

? Integrated low-side FET: 200mΩ

? High efficiency

– Up to 91.2% efficiency at VIN = 5V to VOUT =

12V, and IOUT = 0.2A

– Up to 91.7% efficiency at VIN = 12V to VOUT =

28V, and IOUT = 0.3A

? 2.2A peak switch current limit

? Switching frequency

– TLV61047: 1.6MHz

– TLV610471: 0.6MHz

? ±2.0% Reference voltage accuracy

? Typical 25μA quiescent current

? Typical 0.4μA shutdown current

? PFM operation mode at ultra light load or TON min

triggered

? Internal compensation

? Internal 2.5ms soft start time

? Cycle-by-cycle current limit

? Thermal shutdown protection

? SOT-23-5 DDC package

2 Applications

? LED Power Supply

? Digital Still Camera

? GPS Devices

? Mobile Phone

? OLED Panel Power Supply

? USB-Powered Devices

3 Description

The TLV61047 is a high voltage non-synchronous

boost converter integrates a 200mΩ low side power

switch to provide an easy use and small size power

solution. The TLV61047 has a wide input voltage

range from 2.6V to 20V and output voltage covers up

to 28V with 2.2A switch current capability.

The TLV61047 uses adaptive constant off-time peak

current control topology to regulate the output voltage.

At heavy to light load condition, the TLV61047 works

in pulse width modulation (PWM) mode until trigger

the Ton min or minimum peak current (typical 20mA).

At ultra light load condition , the devices work in pulse

frequency modulation (PFM) mode to improve the

efficiency and ripple performance.

The quasi-constant switching frequency is internally

set to either 1.6MHz (TLV61047) or 0.6MHz

(TLV610471), allowing the use of extremely small

surface mount inductor and capacitors. The

TLV61047 has built in 2.5ms soft start to minimize

the inrush current during start up. Additional features

include internal compensation, cycle by cycle current

limit and thermal shutdown.

The TLV61047 is available in a SOT-23-5 DDC

package.