A6278ELPTR-T Allegro Microsystems Inc, A6278ELPTR-T Datasheet - Page 3

• Manufacturer Part Number: A6278ELPTR-T
• Description: IC,Laser Diode/LED Driver,BICMOS,TSSOP,16PIN,PLASTIC
• Manufacturer: Allegro Microsystems Inc
• Type: Linear (Non-Switching)r

Specifications of A6278ELPTR-T

• Constant Current: Yes
• Topology: 8-Bit Shift Register
• Number Of Outputs: 8
• Internal Driver: Yes
• Type - Primary: General Purpose
• Frequency: 25MHz
• Voltage - Supply: 3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 75.5mA
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Efficiency: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 620-1263-2; A6278ELPTR-T

A6278
A6279
5 TO 12
A6278
SERIAL DATA IN
LATCH ENABLE
13
14
15
16
1
2
3
4
–
–
A, LW, LP
Terminal List Table
and
CLOCK
Number
OUT0
OUT1
OUT2
OUT3
5 TO 20
GND
A6279
21
22
23
24
1
2
3
4
–
–
Package A, LW, LP
1
2
3
4
5
6
7
8
10 to 26
4, 8, 18,
A6279
16-pin
ET
27
28
5
6
7
9
1
2
3
–
EP
OUTPUT ENABLE
SERIAL DATA OUT
OUTPUT ENABLE
16
15
14
13
12
11
10
SERIAL DATA IN
LATCH ENABLE
9
LOGIC SUPPLY
OUT12
OUT13
OUT14
OUT15
OUT11
LOGIC SUPPLY
REXT
SERIAL DATA OUT
OUTPUT ENABLE
OUT7
OUT6
OUT5
OUT4
NC
CLOCK
Name
REXT
OUTx
GND
NC
EP
22
23
24
25
26
27
28
Pin-out Diagrams
Serial-Input, Constant-Current Latched
LED Drivers with Open LED Detection
Package ET
EP
Reference terminal for logic ground and power ground
Serial-data input to the shift-register
Clock input terminal; data is shifted on the rising edge of the clock.
Data strobe input terminal; serial data is latched with a high-level input
Current-sinking output terminals
(Active low) Set low to enable output drivers; set high to turn OFF
(blank) all output drivers
CMOS serial-data output; for cascading to the next device (to that
device SERIAL DATA IN pin); for reading OCD bits.
An external resistor at this terminal establishes the output current for all
of the sink drivers.
(V
No connection
LP and ET packages only; exposed thermal pad for heat dissipation
DD
) Logic supply voltage (typically 3.3 or 5.0 V)
14
13
12
10
11
9
8
OUT4
OUT3
OUT2
OUT1
OUT0
LATCH ENABLE
NC
SERIAL DATA IN
LATCH ENABLE
CLOCK
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
GND
Function
Package A, LW, LP
10
11
12
1
2
3
4
5
6
7
8
9
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
24-pin
EP
24
23
22
21
20
19
18
17
16
15
14
13
LOGIC SUPPLY
REXT
SERIAL DATA OUT
OUTPUT ENABLE
OUT15
OUT14
OUT13
OUT12
OUT11
OUT10
OUT9
OUT8
3