LB1939T Datasheet, PDF (1/7 Pages) Sanyo Semicon Device – 2 Channel H Bridge Constant Voltage/ Constant Current Driver IC

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.
Features
• Low-voltage drive
— Dual power supply operation: VS = 1.6 to 7.5 V,
V_DD = 1.9 to 6.5 V
— Single power supply operation: VS = V_DD = 1.9 to
7.5 V
• Low saturation voltage output: Vosat = 0.3 V at I_O =
200 mA
• Supports constant voltage and constant current drive
• Built-in reference voltage circuit (Vref = 0.9 V)
• Miniature, thin form package (Thickness t = 1.1 mm)
Package Dimensions
unit: mm
3246-TSSOP20
[LB1939T]
6.5
20
11
1
0.65
(0.33)
0.22 ¹⁰
0.15
SANYO: TSSOP20
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Maximum supply voltage
Applied output voltage
Maximum output current: OUT1, 2, 3, and 4
Applied input voltage
Allowable power dissipation
V_Bmax
V_OUT
I_Omax
V_IN
Pdmax
VS1, VS2, V_DD
OUT1, 2, 3, 4
t ≤ 10 ms
ENA, IN, VC
When mounted on a printed circuit board*
Operating temperature
Topr
Storage temperature
Tstg
Note: Circuit board: 114.3 × 76.1 × 1.6 mm³ glass epoxy board
Ratings
Unit
–0.3 to +10.5
V
–0.3 to +10.5
V
400
mA
10.5
V
0.8
W
–20 to +85
°C
–55 to +150
°C
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
22704TN (OT) No. 6194-1/7