LB1845 Datasheet, PDF (1/7 Pages) Sanyo Semicon Device – PWM Current Control Stepping Motor Driver

Ordering number: EN5505B
Monolithic Digital IC
LB1845
PWM Current Control Stepping Motor Driver
Overview
The LB1845 is a PWM current control type stepping
motor driver that uses a bipolar drive scheme. It is
particularly suitable for driving carriage and paper feed
stepping motors in printers and similar products.
Features
• PWM current control (fixed off time scheme)
• Digital load current selection function
• Sustained output voltage: 45 V
• Built-in thermal shutdown circuit
Package Dimensions
unit: mm
3147A-DIP28H
[LB1845]
SANYO: DIP28H
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Motor supply voltage
Peak output current
Continuous output current
Logic block supply voltage
Logic input voltage range
Emitter output voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
V_BB
I_OPEAK
I_OMAX
V_CC
V_IN
V_E
Pd max1
Pd max2
Topr
Tstg
t_W = 20 µS
Conditions
Independent IC
With an arbitrarily large heat sink
Ratings
Unit
45
V
1.75
A
1.5
A
7.0
V
–0.3 to V_CC
V
1.0
V
3.0
W
20.0
W
–20 to +85
°C
–55 to +150
°C
Recommended Operating Ranges at Ta = 25°C
Parameter
Motor supply voltage
Logic block supply voltage
Reference voltage
Symbol
V_BB
V_CC
V_REF
Conditions
Ratings
Unit
10 to 44.5
V
4.75 to 5.25
V
1.5 to 7.5
V
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
D3096HA (OT) No. 5505-1/7