STMicroelectronics STP1612PW05, Руководство пользователя

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Preliminary data
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
December 2009 Doc ID 15819 Rev 4 1/35
35
STP1612PW05
16-channel LED driver with 16-bit PWM,
8-bit gain and full LED error detection
Features
■ 16 constant current output channels
■ Supply voltage: 3.3 V or 5 V
■ Two PWM selectable counters 12/16-bit of
grayscale
■ Selectable enhanced PWM for ghost effect
reduction
■ Open and short LED detection
■ 8-bit current gain control by means of 256
steps in two selectable ranges
■ Single resistor to set the current from 3 mA to
60 mA
■ Programmable progressive output delay
■ Thermal protection and thermal flag
■ UVLO
■ Schmitt trigger input
■ Selectable 16-bit or 256-bit serial data-in
format
■ Max clock frequency: 30 MHz
■ ESD protection 2.5 kV HBM, 200 V MM
■ Drop-in compatible with STP16CP\S\DP05
series
■ Available in high thermal efficiency TSSOP
exposed pad
Applications
■
Video display LED panels
■
RGB backlighting
■
Special lighting
Description
The STP1612PW05 is a 16-channel constant
current sink LED driver. The maximum output
current value for all the 16 channels is set by a
single resistor from 3 mA to 60 mA. The device
features 8-bit gain (256 steps) for global LED
brightness adjustment with two selectable ranges.
This function is accessible via a serial interface.
The device has an individual adjustable PWM
brightness control for each output channel. The
PWM counters are selectable via a serial
interface with 4096 or 65536 steps (12 or 16 bit).
The STP1612PW05 also provides enhanced
pulse-width modulation counting algorithms called
e-PWM to reduce flickering effects (ghost visual
effects) improving the overall image quality. The
device has a dual size 16-bit or 256-bit shift
register. All the control and the shift register read
back data are accessible via serial interface. The
STP1612PW05 has the capability to detect open
and short LED failure and overtemperature,
reporting the status through SPI line. The device
guarantees a 20 V output driving capability,
allowing the user to connect more LEDs in series.
SO-24
TSSOP24 TSSOP24
exposed pad
QFN-24
Table 1. Device summary
Order code Package Packaging
STP1612PW05QTR QFN-24 4000 parts per reel
STP1612PW05MTR SO-24 1000 parts per reel
STP1612PW05TTR TSSOP24 2500 parts per reel
STP1612PW05XTTR TSSOP24 exposed pad 2500 parts per reel
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