
Ordering number : ENN6201A
61202RM (OT)/62599RM (KI) No. 6201-1/14
Overview
The LB1876 is a driver for polygon mirror motors such as
used in laser printers and similar equipment.
It incorporates all necessary circuitry (speed control +
driver) on a single chip. Direct PWM drive enables drive
with low power loss.
Functions and Features
Three-phase bipolar drive
Direct PWM drive technique
Built-in lower side output diode
Output current limiter
Reference clock input circuit (FG frequency equivalent)
PLL speed control circuit
Phase lock detector output (with masking function)
Built-in protection circuitry includes current limiter,
restraint protection, overheat protection, low-voltage
protection, etc.
Brake method switching circuit (free-run or reverse
torque)
5V regulator output
Power save function
Package Dimensions
unit: mm
3235A-HSOP36
(6.2)
2.7
36
1
0.8
17.8
0.3
(
1
0
0.25
(0.5)
7
(
2
0
2.0
SANYO: HSOP36
[LB1876]
LB1876
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Three-Phase Brushless Motor Driver
for Polygon Mirror Motors
Monolithic Digital IC
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.
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage 1
V
CC
max
I
O
max
Pd max1
30
V
Maximum output current
T
≤
500 ms
IC only
2.5
A
Allowable power dissipation 1
0.9
W
Allowable power dissipation 2
Pd max2
*With substrate
2.1
W
Operating temperature
Topr
–20 to +80
°C
Storage temperature
Tstg
–55 to +150
°C
Specifications
Maximum Ratings
at Ta = 25°C
*
Substrate: 114.3
×
76.1
×
1.6 mm
3
, glass epoxy