A6277SLWTR Allegro Microsystems Inc, A6277SLWTR Datasheet

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A6277SLWTR

Manufacturer Part Number
A6277SLWTR
Description
IC LED DRIVER LINEAR 20-SOIC
Manufacturer
Allegro Microsystems Inc
Type
Linear (Non-Switching)r
Datasheet
1.A6277ELWTR-T.pdf (12 pages)

Specifications of A6277SLWTR

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
20-SOIC (7.5mm Width)
Operating Temperature
-20°C ~ 85°C
Current - Output / Channel
120mA
Internal Switch(s)
Yes
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Efficiency
-
Allegro MicroSystems, Inc. reserves the right to make, from time to time, revisions to the anticipated product life cycle plan
for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The
information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no respon-
sibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use.
8-Bit Serial Input Constant-Current Latched LED Driver
This part is in production but has been determined to be
LAST TIME BUY. This classification indicates that the product is
obsolete and notice has been given. Sale of this device is currently
restricted to existing customer applications. The device should not be
purchased for new design applications because of obsolescence in the
near future. Samples are no longer available.
Date of status change: November 1, 2010
Deadline for receipt of LAST TIME BUY orders: April 30, 2011
Recommended Substitutions:
NOTE: For detailed information on purchasing options, contact your
local Allegro field applications engineer or sales representative.
For existing customer transition, and for new customers or new appli-
cations, refer to the A6279.
Last Time Buy
A6277

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A6277SLWTR Summary of contents

Page 1

Serial Input Constant-Current Latched LED Driver This part is in production but has been determined to be LAST TIME BUY. This classification indicates that the product is obsolete and notice has been given. Sale of this device is currently ...

Page 2

Serial Input Constant-Current Latched LED Driver Features and Benefits ▪ 150 mA constant-current outputs ▪ Undervoltage lockout ▪ Low-power CMOS logic and latches ▪ High data input rate ® ▪ Similar to Toshiba TD62715FN ▪ High/low output ...

Page 3

A6277 8-Bit Serial Input Constant-Current Latched LED Driver Selection Guide Part Number A6277ELWTR-T 20-pin SOICW Absolute Maximum Ratings* Characteristic Supply Voltage Output Voltage Range Input Voltage Voltage Output Current Operating Ambient Temperature Maximum Junction Temperature Storage Temperature * Caution: These ...

Page 4

A6277 8-Bit Serial Input Constant-Current Latched LED Driver ELECTRICAL CHARACTERISTICS Supply Voltage Range Under-Voltage Lockout Output Current (any single output) Output Current Matching ...

Page 5

A6277 8-Bit Serial Input Constant-Current Latched LED Driver SWITCHING CHARACTERISTICS 470 , mA, V EXT Propagation Delay ...

Page 6

A6277 8-Bit Serial Input Constant-Current Latched LED Driver TIMING REQUIREMENTS and SPECIFICATIONS CLOCK SERIAL DATA IN SERIAL DATA OUT. SERIAL DATA OUT. LATCH ENABLE OUTPUT ENABLE OUT OUTPUT ENABLE OUT A. Data Active Time Before Clock Pulse (Data Set-Up Time), ...

Page 7

A6277 8-Bit Serial Input Constant-Current Latched LED Driver ALLOWABLE OUTPUT CURRENT AS A FUNCTION OF DUTY CYCLE 140 120 100 140 120 100 ...

Page 8

A6277 8-Bit Serial Input Constant-Current Latched LED Driver ALLOWABLE OUTPUT CURRENT AS A FUNCTION OF DUTY CYCLE 140 120 100 ...

Page 9

A6277 8-Bit Serial Input Constant-Current Latched LED Driver IN OUTPUT ENABLE (active low Serial Shift Register Contents ...

Page 10

A6277 8-Bit Serial Input Constant-Current Latched LED Driver The load current per bit ( set by the external resistor shown in the figure below. EXT 140 120 100 100 ...

Page 11

A6277 8-Bit Serial Input Constant-Current Latched LED Driver Terminal No. Terminal Name 1 LOGIC GROUND 2 SERIAL DATA IN 3 CLOCK 4 LATCH ENABLE 5 HIGH/LOW (CURRENT) 6 POWER GROUND 7-14 OUT 0-7 15 POWER GROUND 16 OUTPUT ENABLE 17 ...

Page 12

A6277 8-Bit Serial Input Constant-Current Latched LED Driver 12.80±0. 20X 0.10 C 1.27 0.41 ±0.10 For Reference Only Dimensions in millimeters (Reference JEDEC MS-013 AC) Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact ...

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