LB1939T-TLM-E Datasheet, PDF (1/1 Pages) ON Semiconductor – LB1939T Motor Driver, Constant Voltage / Current, H-Bridge, 2-Channel

Product Overview
LB1939T: Motor Driver, Constant Voltage / Current, H-Bridge, 2-Channel
For complete documentation, see the data sheet
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
Part Electrical Specifications
Product
LB1939T-MPB-E
LB1939T-TLM-E
Compliance Status
Pb-free
Active
Pb-free
Active
Type V_M
Min
(V)
Step 1.6
per
Step 1.6
per
V_M
V_CC
Max Min
(V) (V)
10.5 1.9
10.5 1.9
V_CC I_O
I_O
Step Cont Feed Curr Reg Fault Flyb R_DS(o Pack
Max Max Peak Reso rol back ent ulato Dete ack n)
age
(V) (A) Max lutio Type Meth Sens r
ction Prot ^Typ Type
(A) n
od e
Outp
ectio ^(Ω)
ut
n
10.5 0.4
1 ^{Paral Non Exter Yes Ther Integ}
TSS
lel e
nal
mal rated
OP-
½
Resi
Activ
20
stor
e
10.5 0.4
½ ^{Paral Non Exter Yes Ther Integ}
TSS
lel e
nal
mal rated
OP-
1
Resi
Activ
20
stor
e
For more information please contact your local sales support at www.onsemi.com
Created on: 1/15/2015