TPSM861257中文資料德州儀器數(shù)據(jù)手冊(cè)PDF規(guī)格書

1 Features

? Configured for a wide range of applications

– 3V to 17V input voltage range

– 0.6V to 10V output voltage range for

TPSM863252

– 0.6V to 5.5V output voltage range for

TPSM863257

– Fixed 3.3V output voltage for TPSM863253

– 0.6V reference voltage

– ±1 reference accuracy at 25°C

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

– Integrated 55mΩ and 24mΩ MOSFETs

– 100μA low quiescent current

– 1.2MHz switching frequency

– Maximum 95 large duty cycle operation

– Precision EN threshold voltage

– 1.6ms fixed typical soft-start time

? Ease of use and small design size

– TPSM863252 Eco-mode, TPSM863257 and

TPSM863253 FCCM mode at light loading

– Fast transient D-CAP3? control mode

– Easy layout with integrated bootstrap capacitor

and inductor

– Support start-up with prebiased output voltage

– Non-latch for OV, OT, and UVLO protection

– Cycle-by-cycle OC and NOC protection

– –40°C to 125°C operating junction temperature

– 3.3mm × 4mm × 2mm QFN package

? Create a custom design using the TPSM863252

with the WEBENCH? Power Designer

? Create a custom design using the TPSM863253

with the WEBENCH? Power Designer

? Create a custom design using the TPSM863257

with the WEBENCH? Power Designer

2 Applications

? Merchant network and server PSU

? AC/DC adapters/PSU

? Factory automation and control

? Test and measurement

3 Description

The TPSM86325x is a simple, easy-to-use, highefficiency,

high-power density, synchronous buck

module with input voltage ranging from 3V to 17V and

supports up to 3A continuous current.

The TPSM86325x employs D-CAP3 control mode

to provide a fast transient response and to support

low-ESR output capacitors with no requirement for

external compensation. The device can support up to

95 duty cycle operation.

The TPSM863252 operates in Eco-mode, which

maintains high efficiency during light loading. The

TPSM863257 operates in FCCM mode, which keeps

the same frequency and lower output ripple during

all load conditions. TPSM863253 is a fixed 3.3V

output voltage part with FCCM mode. TPS863253

integrated divider resistors and a feedforward cap

in internal module. The device integrates complete

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

with hiccup.

The device is available in a QFN package. The

junction temperature is specified from –40°C to

125°C.