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LB1939T: Motor Driver, Constant Voltage / Current, H-Bridge, 2-Channel

Overview
Specifications
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Product Overview
Product Description
The LB1939T is a 2-phase excitation bipolar stepping motor driver that features low voltage operation, a low saturation voltage and low power consumption. It supports constant voltage and constant current drive, can control two iris motors and is optimal for shutter, iris and AF drive in 3V battery operated still digital cameras and other battery operated equipment.
Features
 
  • Low voltage drive
  • Low saturation voltage output
  • Supports constant voltage and constant current drive
  • Built-in reference voltage circuit
Applications
  • Battery operated equipment
Technical Documentation & Design Resources
Application Notes (1) Evaluation Board Documents (4)
Package Drawings (1)  
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
LB1939TGEVB Active
Pb-free
EVABOARD FOR LB1939T
Avnet (2015-07-09) : 2
Mouser (2015-07-09) : 2
Availability and Samples
Product
Status
Compliance
Description
Package
MSL*
Container
Budgetary Price/Unit
Type
Case Outline
Type
Qty.
LB1939T-MPB-E Active
Pb-free
Motor Driver, Constant Voltage / Current, H-Bridge, 2-Channel TSSOP-20 948AX 3 Fan-Fold 70 $1.6813
LB1939T-TLM-E Active
Pb-free
Motor Driver, Constant Voltage / Current, H-Bridge, 2-Channel TSSOP-20 948AX 3 Tape and Reel 2000 $1.261
Moisture Sensitivity level (MSL) for surface mount devices (lead free measured at 260°C reflow, non lead free at 235°C reflow)
Market Leadtime (weeks) : 4 to 8
Market Leadtime (weeks) : 4 to 8
Digikey   (2015-07-09) : >1K
Mouser   (2015-07-09) : <1K
PandS   (2015-07-09) : >1K
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Product Overview

Product Compliance Status Description Type VM Min (V) VM Max (V) VCC Min (V) VCC Max (V) IO Max (A) IO Peak Max (A) Step Resolution Control Type Feedback Method Current Sense Regulator Output Fault Detection Flyback Protection RDS(on) Typ (Ω) Package Type
 Pb-free   Active     Motor Driver, Constant Voltage / Current, H-Bridge, 2-Channel   Stepper   1.6   10.5   1.9   10.5   0.4   
 1 
 ½ 
 Parallel   None   External Resistor   Yes   Thermal   Integrated Active     TSSOP-20 
 Pb-free   Active     Motor Driver, Constant Voltage / Current, H-Bridge, 2-Channel   Stepper   1.6   10.5   1.9   10.5   0.4   
 ½ 
 1 
 Parallel   None   External Resistor   Yes   Thermal   Integrated Active     TSSOP-20 
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Case Outlines
948AX   
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