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

Quantity $ per Unit Savings
1 - 9$2.450%
10 - 24$2.2010%
25 - 99$2.0815%
100 - 249$1.7728%
250 - 499$1.6732%
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Parameter NameParameter Value
Input Voltage Min Volt3.0
Input Voltage Max Volt5.5
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius125.0
Packing TypeTape And Reel
RoHs compliantEcopack2
Package NameTSSOP 24

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.

Key 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