A6276ELW Allegro Microsystems Inc, A6276ELW Datasheet - Page 2

• Manufacturer Part Number: A6276ELW
• Description: IC LED DRIVER LINEAR 24-SOIC
• Manufacturer: Allegro Microsystems Inc
• Type: Linear (Non-Switching)r

Specifications of A6276ELW

• Constant Current: Yes
• Topology: 16-Bit Shift Register
• Number Of Outputs: 16
• Internal Driver: Yes
• Type - Primary: General Purpose
• Frequency: 20MHz
• Voltage - Supply: 4.5 V ~ 5.5 V
• Voltage - Output: 1V
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 75.5mA
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Efficiency: -

Features and Benefits
▪ Up to 90 mA constant-current outputs
▪ Undervoltage lockout
▪ Low-power CMOS logic and latches
▪ High data input rate
▪ Functional replacement for TB62706BN/BF
Packages
26185.201I
Not to scale
24-pin DIP
(A package)
24-pin SOICW
(LW package)
Functional Block Diagram
16-Bit Serial Input, Constant-Current
Description
The A6276 is specifically designed for LED-display
applications. Each BiCMOS device includes a 16-bit CMOS
shift register, accompanying data latches, and 16 NPN constant-
current sink drivers. Except for package style and allowable
package power dissipation, the device options are identical.
The CMOS shift register and latches allow direct interfacing
with microprocessor-based systems. With a 5 V logic supply,
typical serial data-input rates are up to 20 MHz. The LED drive
current is de ter mined by the user selection of a single resistor.
A CMOS serial data output permits cascaded connections in
applications requiring additional drive lines. For inter-digit
blanking, all output drivers can be disabled with an ENABLE
input high. Similar 8-bit devices are available as the A6275.
Two package styles are provided: through-hole DIP (suffix A)
and surface-mount SOIC (suffix LW). In normal applications,
the copper leadframe and low logic-power dissipation of the
DIP allow it to sink maximum rated current through all outputs
con tin u ous ly over the operating temperature range (90 mA,
0.75 V drop, 85°C). Both packages are lead (Pb) free, with
100% matte tin leadframe plating.
Latched LED Driver
A6276