TPS56424X中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Configured for a wide range of applications

– 3-V to 16-V input voltage range

– 0.6-V to 7-V output voltage range

– 0.6-V reference voltage

– ±1 reference accuracy at 25°C

– ±1.5 reference accuracy at –40°C to 125°C

– Integrated 28.8-mΩ and 15.4-mΩ RDSON FET

– 120-μA low quiescent current

– 1.2-MHz switching frequency

– Supports maximum 95 duty cycle operation

– Precision EN threshold voltage

– 1.39-ms fixed typical soft-start time

? Ease of use and small solution size

– Eco-mode (TPS564242) and FCCM mode at

light loading (TPS564247)

– Part of a full P2P family including solutions for 4

A, 5 A, and 6 A and FCCM/ECO operation

– D-CAP3? control topology

– Support start-up with prebiased output

– Non-latch for OV/OT/UVLO protection

– Hiccup mode for UV protection

– Cycle-by-cycle OC and NOC limit

– 6-pin SOT-563 package

? Create a custom design using the TPS564242 with

the WEBENCH? Power Designer

? Create a custom design using the TPS564247 with

the WEBENCH? Power Designer

2 Applications

? LCD TV, STB and DVR, streaming media player

? IP network camera, video doorbell, building

security gateway

? WLAN/Wi-Fi access point, modem (cable/DSL/

GFAST), solid state drive

3 Description

The TPS56424x is simple, easy-to-use, high power

density, high efficiency synchronous buck converter.

The device supports input voltage ranging from 3 V to

16 V and up to 4-A continuous current with a SOT-563

package.

The TPS56424x uses D-CAP3 topology to provide

a fast transient response and support low-ESR

output capacitors with no requirement for external

compensation. It has two grounds, GND and AGND,

which should be connected together for optimal

thermal performance. AGND also provides a good

load and line regulation. The device can support up

to 95 duty operation.

The TPS564242 operates in Eco-mode, which

maintains high efficiency during light loading. The

TPS564247 operates in FCCM mode, which keeps

the same frequency and lower output ripple during

all load conditions. It integrates complete protection

through OVP, OCP, UVLO, OTP, and UVP with

hiccup. The device is available in 1.6-mm × 1.6-

mm SOT-563 package and has an optimized pinout

for easy PCB layout. The junction temperature is

specified from –40°C to 125°C.