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Ordering number : ENN6194
Monolithic Digital IC
LB1939T
2 Channel H Bridge Constant
Voltage/ Constant Current Driver IC
Overview
The LB1939T is a two-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 3 V battery operated still digital cameras and other battery operated equipment.
Package Dimensions
unit: mm 3246-TSSOP20
[LB1939T]
20 11
0.
5 4.
4 6.
4 0.
08 (1.
0) 1.
2max 0.
15 6.
5
Features
• Low-
voltage drive — Dual power supply operation: VS = 1.
6 to 7.
...