TPS56837中文資料德州儀器數(shù)據(jù)手冊(cè)PDF規(guī)格書

1 Features

? 4.5-V to 28-V input voltage range

? 0.6-V to 13-V output voltage range

? Supports 8-A continuous output current

? Integrated 20.4-mΩ and 9.5-mΩ MOSFETs

? 0.6-V ±1 reference voltage at 25°C

? 45-uA low quiescent current

? D-CAP3? control mode for fast transient response

? Eco-mode (auto-skip mode) for high light-load

efficiency

? 550-kHz, 880-kHz, and 1300-kHz selectable

switching frequencies by mode selection

? Adjustable cycle-by-cycle over current limit for lowside

MOSFETs by mode selection

? Adjustable soft-start time with default 1.8 ms

? Built-in output discharge function

? Power-good indicator to monitor output voltage

? Supports up to 98 duty operation

? Non-latched protections for UV, OV, OT, and UVLO

? –40°C to +150°C operating junction temperature

? Small 10-pin 3.0-mm × 3.0-mm HotRod? QFN

Package

? Pin-to-pin compatible with 6-A TPS56637

2 Applications

? Industrial PC, EPOS, factory automation and

control

? Multifunction printers, video conference system

? Monitors, TV, speakers, PC and notebooks,

portable electronics

? General purposes for 12-V,19-V, 24-V power-bus

supply

3 Description

The TPS56837 is a high-efficiency, easy-to-use,

synchronous buck converter with a wide input voltage

range of 4.5 V to 28 V, and supports up to 8-A

continuous output current at output voltages between

0.6 V and 13 V.

The TPS56837 uses D-CAP3 control mode to

provide fast transient response, good line and load

regulation, no requirement for external compensation,

and supports low equivalent series resistance (ESR)

output capacitors like MLCC.

The TPS56837 operates at Eco-mode to attain

high efficiency at light load with three selectable

switching frequencies: 550 kHz, 880 kHz, and 1300

kHz and selectable current limit through MODE pin

configuration. The TPS56837 has adjustable soft-start

time with default 1.8 ms by SS pin.

The TPS56837 provides complete non-latched OV

(overvoltage), UV (undervoltage), OC (overcurrent),

OT (overtemperature) and UVLO (undervoltage

lockout) protections combined with power-good

indicator and output discharge function features.

The TPS56837 is available in a 10-pin 3.0-mm ×

3.0-mm HotRod QFN package, and the junction

temperature is specified from –40°C to 150°C.