LED1642GW

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16 Channels LED driver with Error detection, Current Gain Control and 12/16 bit PWM Brightness control

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Product overview

Description

The LED1642GW is a monolithic, low voltage, low current power 16-bit shift register designed for LED panel displays. The LED1642GW guarantees 20 V output driving capability allowing the user to connect several LEDs in series. In the output stage, sixteen regulated current sources provide from 3 mA to 40 mA constant current to drive the LEDs. The current is programmed through an external resistor and can be adjusted by a 7-bit current gain register in two subranges. The brightness can be adjusted separately for each channel through 12/16-bit grayscale control.

Programmable turn-on and turn-off time (four different values available) improves the low noise generation performance of the system.

Open/short error detection mode is available in the LED1642GW. The auto power-shutdown and auto power-on features (selectable) allow the device to save power without external intervention.

Thermal management includes an overtemperature data alert and output thermal shutdown (170 °C). The high clock frequency is up to 30 MHz and it makes the device suitable for high data rate transmission. A selectable gradual output delay reduces the inrush current, whereas the selectable SDO synchronization feature works when the device is used in daisy-chain configuration. The supply voltage range is between 3 V and 5.5 V.

  • All features

    • 16 constant current output channels
    • Output current: from 3 mA to 40 mA
    • Current programmable through external resistor
    • 7-bit global current gain adjustment in two ranges
    • 12/16-bit PWM grayscale brightness control
    • Programmable output turn-on/off time
    • Error detection mode (both open and shorted-LED)
    • Programmable shorted-LED detection thresholds
    • Auto power saving/auto-wakeup
    • Selectable SDO synchronization on the CLK falling edge
    • Gradual output delay (selectable)
    • Supply voltage: 3 V to 5.5 V
    • Thermal shutdown and overtemperature alert
    • 30 MHz 4-wires interface
    • 20 V current generator rated voltage

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LED1642GWPTR
Active
QSOP24 Industrial Ecopack2
LED1642GWQTR
Active
QFN-24L Industrial Ecopack2
LED1642GWTTR
Active
TSSOP 24 Industrial Ecopack2
LED1642GWXTTR
Active
HTSSOP24 Industrial Ecopack2

LED1642GWPTR

Package:

QSOP24

Material Declaration**:

PDF XML

Marketing Status

Active

Package

QSOP24

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LED1642GWQTR

Package:

QFN-24L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

QFN-24L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LED1642GWTTR

Package:

TSSOP 24

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TSSOP 24

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LED1642GWXTTR

Package:

HTSSOP24

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP24

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors