特性 Features

? Up to 6-A Output Current

? 3.3-V Input Voltage

? Wide-Output Voltage Adjust

(0.8 V to 2.5 V)

? Efficiencies up to 94 %

? 103 W/in3 Power Density

? On/Off Inhibit

? Pre-Bias Startup

? Under-Voltage Lockout

? Operating Temp: –40 to +85 °C

? Auto-Track? Sequencing

? Output Over-Current Protection

(Non-Latching, Auto-Reset)

? IPC Lead Free 2

? Safety Agency Approvals:

UL 1950, CSA 22.2 950, EN60950

VDE (Pending)

? Point-of-Load Alliance (POLA)

Compatible

描述 Description

The PTH03050 is one of the smallest

non-isolated power modules from Texas

Instruments that features Auto-Track?.

Auto-Track simplifies supply voltage

sequencing in power systems by enabling

modules to track each other, or any other

external voltage, during power up and

power down.

Although small in size (0.87 in × 0.5 in),

these modules are rated for up to 6 A of

output current, and are an ideal choice in

applications where space, performance,

and a power-up sequencing capability are

important attributes.

The product provides high-performance

step-down conversion from a 3.3-V input

bus voltage. The output voltage of the

PTH03050W can be set to any voltage

over the range, 0.8 V to 2.5 V, using a

single resistor.

Other operating features include an

on/off inhibit, output voltage adjust (trim),

and output over-current protection. For

high efficiency these parts employ a

synchronous rectifier output stage, but a

pre-bias hold-off capability ensures that

the output will not sink current during

startup.

Target applications include telecom,

industrial, and general purpose circuits,

including low-power dual-voltage systems

that use a DSP, microprocessor, ASIC, or

FPGA.

Package options include both throughhole

and surface mount configurations.