A6275ELWTR Allegro Microsystems Inc, A6275ELWTR Datasheet - Page 2

• Manufacturer Part Number: A6275ELWTR
• Description: IC LED DRIVER LINEAR 16-SOIC
• Manufacturer: Allegro Microsystems Inc
• Type: Linear (Non-Switching)r

Specifications of A6275ELWTR

• Constant Current: Yes
• Topology: 8-Bit Shift Register
• Number Of Outputs: 8
• 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: 16-SOIC (0.300", 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
▪ Pin-compatible with TB62705CP
Packages
Not to scale
26185.200F
GROUND
DATA IN
ENABLE
SERIAL
CLOCK
LATCH
(A package)
16-pin DIP
8-Bit Serial Input Constant-Current Latched LED Driver
OUT
0
OUT
16-pin SOICW
(LW package)
SERIAL-PARALLEL SHIFT REGISTER
1
Functional Block Diagram
OUT
2
LATCHES
Description
The A6275 is specifically designed for LED display applications.
Each BiCMOS device includes an 8-bit CMOS shift register,
accompanying data latches, and eight NPN constant-current
sink drivers.
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 cascade connections in
applications requiring additional drive lines. For inter-digit
blanking, all output drivers can be disabled with an ENABLE
input high. A similar 150 mA output device is available as the
A6277; a similar 16-bit device is available as the A6276.
Two package styles are provided: a through-hole DIP (suffix
A) and a surface-mount SOICW (suffix LW). Under normal
applications, copper leadframes and low logic-power dissipation
allow these devices to sink maximum rated current through
all outputs continuously over the operating temperature range
(90 mA, 0.9 V drop, 85°C). Both packages are lead (Pb) free,
with 100% matte tin leadframe plating.
OUT
N
UVLO
REGULATOR
I
O
BIPOLAR
MOS
V
DD
LOGIC
SUPPLY
SERIAL
DATA OUT
OUTPUT ENABLE
(ACTIVE LOW)
R
EXT
A6275
Dwg. FP-013-3