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A3958 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - DMOS FULL-BRIDGE PWM MOTOR DRIVER - Allegro MicroSystems

भाग संख्या A3958
समारोह DMOS FULL-BRIDGE PWM MOTOR DRIVER
मैन्युफैक्चरर्स Allegro MicroSystems 
लोगो Allegro MicroSystems लोगो 
पूर्व दर्शन
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<?=A3958?> डेटा पत्रक पीडीएफ

A3958 pdf
A3958
DMOS Full-Bridge PWM Motor Driver
Selection Guide
Part Number
Packing
Package
A3958SB-T*
24-pin DIP with exposed thermal tabs
15 per Tube
A3958SLBTR-T
24-pin SOICW with internally fused pins
1000 per reel
Variant is in production but has been determined to be NOT FOR NEW DESIGN. This classification indicates
that sale of the variant is currently restricted to existing customer applications. The variant should not be
purchased for new design applications because obsolescence in the near future is probable. Samples are no
longer available. Status change: May 4, 2009.
Absolute Maximum Ratings
Characteristic
Load Supply Voltage
Logic Supply Voltage
Input Voltage
Sense Voltage
Reference Voltage
Output Current
Package Power Dissipation
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Symbol
VBB
VDD
VIN
VS
VREF
IOUT
PD
TA
TJ(max)
Tstg
Notes
Output current rating may be limited by duty cycle, ambient
temperature, and heat sinking. Under any set of conditions, do
not exceed the specied current rating or a junction tempera-
ture of 150°C.
B package, per SEMI G42-88 Specification, TA= 25°C
LB package, per SEMI G42-88 Specification, TA= 25°C
Range S
Fault conditions that produce excessive junction temperature
will activate the device’s thermal shutdown circuitry. These
conditions can be tolerated but should be avoided.
Rating
50
7.0
–0.3 to VCC + 0.3
0.5
2.7
±2.0
3.1
1.6
–20 to 85
150
–55 to 150
Units
V
V
V
V
V
mA
W
W
ºC
ºC
ºC
Thermal Characteristics
Characteristic
Symbol
Test Conditions*
Package Thermal Resistance, Junction
to Ambient
B Package, single-layer PCB, 1 in2. 2-oz. exposed copper
RθJA
LB Package, single-layer PCB, minimal exposed copper area
Package Thermal Resistance, Junction
to Tab
RθJT
*Additional thermal information available on Allegro website.
4
Value
40
77
6
RQJT = 6.0oC/W
3
SUFFIX 'B', R QJA = 40oC/W
2
Units
ºC/W
ºC/W
ºC/W
1
0
25
SUFFIX 'LB', R QJA = 77oC/W
50 75 100
TEMPERATURE IN oC
125
150
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Copyright © 2000, 2002 Allegro MicroSystems, Inc.
2

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