DLP® PMIC/LED driver for DLP4710 (0.47 1080p) DMD

The DLPA3005 is a highly-integrated power

management IC optimized for DLP

Pico™ Projector systems. The DLPA3005 supports LED projectors up to 16 A per

LED and up to 32 A

for series LEDs, enabled by an integrated high efficiency buck controller.

Additionally, the drivers control the RGB switches, supporting the sequencing of R, G, and B

LEDs. The DLPA3005 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 DLPA3005 contains several auxiliary

blocks which can be used in a flexible way. This enables a tailor-made Pico Projector

system.

One

8-bit programmable buck

converter can

be used, for instance, to drive rgb projector

FAN or to make

auxiliary supply

line. General

purpose

buck2

(PWR6)

is currently

supported.

Two LDOs can be used for a lower-current supply, up to 200 mA. These LDOs are

predefined to

2.5 V and 3.3 V.

Through the SPI, all blocks of the DLPA3005

can be addressed. Features included are the generation of the system reset, power

sequencing, input signals for sequentially selecting the active LED, IC self-protections,

and an analog MUX for routing analog information to an external ADC.