LV8747T Datasheet, PDF (1/21 Pages) Sanyo Semicon Device – Bi-CMOS LSI PWM Constant-Current Control Stepping Motor Driver and Switching Regulator Controller

Ordering number : ENA0967
LV8747T
Bi-CMOS LSI
PWM Constant-Current Control Stepping Motor
Driver and Switching Regulator Controller
Overview
The LV8747T is a PWM constant-current control stepping motor driver and switching regulator controller IC.
Features
• Two circuits of PWM constant-current control stepping motor driver incorporated
• Two circuits of switching regulator controller incorporated
• Motor driver control power incorporated
• Control of the stepping motor to W1-2 phase excitation possible
• Chopping frequency selectable
• Output short-circuit protection circuit incorporated
• High-precision reference voltage circuit incorporated
• Output-stage push-pull composition enabling high-speed operation
• Timer latch type short-circuit protection circuit incorporated
• Upper and lower regenerative diodes incorporated
• Thermal shutdown circuit incorporated
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Supply voltage
Driver output peak current 1
Driver output continuous current 1
Driver output peak current 2
Driver output continuous current 2
Regulator output current
Symbol
VM max
MDIO peak1
MDIO max1
MDIO peak2
MDIO max2
SWIO max
Conditions
OUT1/OUT2 tw ≤ 10ms, duty 20%
OUT1/OUT2
OUT3/OUT4 tw ≤ 10ms, duty 20%
OUT3/OUT4
OUT5/OUT6 tw ≤ 1µs
Ratings
Unit
38
V
1.75
A
1.5
A
0.8
A
0.5
A
500
mA
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O1007 MS PC 20071001-S00003 No.A0967-1/21