DLPC84XX中文资料德州仪器数据手册PDF规格书

1 Features

• Generation of DMD high voltage supplies

• Two high-efficiency buck converters to generate

the DLPC84xx and DMD supply

• One high-efficiency, 8-bit programmable buck

converter for fan driver application or general

power supply. General purpose buck2 (PWR6) is

currently supported.

• Two LDOs supplying auxiliary voltages

• Analog MUX for measuring internal and external

nodes such as a thermistor and reference levels

• Monitoring/protections: thermal shutdown, hot die,

and undervoltage lockout (UVLO)

2 Applications

Portable DLP®Pico™ projectors

3 Description

The DLPA3082 is a highly-integrated power

management IC optimized for DLP® Pico™ Projector

systems. The DLPA3082 contains five buck

converters, two of which are dedicated for DLPC low

voltage supplies. Another dedicated regulating supply

generates the three timing-critical DC supplies for the

DMD: VBIAS, VRST, and VOFS.

The DLPA3082 contains several auxiliary blocks

which are used in a flexible way. This enables

a tailor-made Pico Projector system. One 8-bit

programmable buck converter isused, for instance, to

make auxiliary supply line. General purpose buck2

(PWR6) is currently supported. Two LDOs are used

for a lower-current supply, up to 200mA. These LDOs

are predefined to 2.5V and 3.3V.

Through the SPI, all blocks of the DLPA3082 are

addressed. Features included are the generation

of the system reset, power sequencing, IC selfprotections,

and an analog MUX for routing analog

information to an external ADC.