1FEATURES

2· Up to 18-A Output Current

· 3.3-V Input Bus

· Wide-Output Voltage Adjust

(0.8 V to 2.5 V)

· Efficiencies up to 96%

· On/Off Inhibit

· Output Voltage Sense

· Prebias Start-Up

· Undervoltage Lockout

· Auto-Track? Sequencing

· Output Overcurrent Protection

(Nonlatching, Auto-Reset)

· Overtemperature Protection

· Operating Temperature: –40°C to 85°C

· Safety Agency Approvals:

UL/cUL 60950, EN60950 VDE

· POLA? Compatible

APPLICATIONS

· Multivoltage Digital Systems

· High-Density Logic Circuits

· High-End Computers and Servers

· 3.3-V Intermediate Bus Architectures

DESCRIPTION

The PTV03020W is a ready-to-use nonisolated power module, and part of a new class of complete dc/dc

switching regulators from Texas Instruments. These regulators combine high performance with double-sided,

surface-mount construction, to give designers the flexibility to power the most complex multiprocessor digital

systems using off-the-shelf catalog parts.

The PTV03020W series is produced in a 12-pin, single in-line pin (SIP) package. The SIP footprint minimizes

board space, and offers an alternate package option for space conscious applications. Operating from a 3.3-V

input bus, the series provides step-down conversion to a wide range of output voltages, at up to 18 A of output

current. The output voltage can be set to any value over the range, 0.8 V to 2.5 V, using a single external

resistor.

This series includes Auto-Track?. Auto-Track simplifies the task of supply-voltage sequencing in a power

system by enabling the output voltage of multiple modules to accurately track each other, or any external voltage,

during power up and power down.

Other operating features include an on/off inhibit, and the ability to start up into an existing output voltage or

prebias. For improved load regulation, an output voltage sense is provided. A nonlatching overcurrent trip and

overtemperature shutdown protect against load faults.

Target applications include complex multivoltage, multiprocessor systems that incorporate the industry's

high-speed microprocessors, bus drivers, and the TMS320? DSP family.