LB1821M Datasheet, PDF (1/16 Pages) Sanyo Semicon Device – Power Brushless Motor Pre-Driver IC for OA Equipment

Ordering number : EN5686
Monolithic Digital IC
LB1821M
Power Brushless Motor Pre-Driver IC
for OA Equipment
Overview
The LB1821M is a pre-driver IC that supports direct
PWM drive and is appropriate for the power brushless
motors used in office automation equipment. A motor
drive circuit with the desired output capability (voltage
and current characteristics) can be constructed by
attaching a driver array at the IC output. The LB1821M
includes on chip a speed control circuit that allows the
motor speed to be varied using an external clock.
Features
• Direct PWM drive output
• Speed discriminator + PLL speed control circuit
• FG and integrating amplifiers
• Forward/reverse switching circuit
• Braking circuit (short braking)
• Speed lock detection output
• Full complement of on-chip protection circuits,
including lock protection, current limiter, and
thermal shutdown protection circuits.
Package Dimensions
unit: mm
3148-QFP44MA
[LB1821M]
SANYO: QIP44MA
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Maximum input current
Output current
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
V_CC max
I_REG max
I_O max
Pd max
Topr
Tstg
Conditions
V_REG pin
UL, UV, and WL outputs
Ratings
Unit
9
V
10
mA
30
mA
0.9
W
–20 to +80
°C
–55 to +150
°C
Allowable Operating Ranges at Ta = 25°C
Parameter
Supply voltage
Input current range
FG Schmitt output applied voltage
FG Schmitt output current
Lock detection output current
Symbol
V_CC
I_REG
V_FGS
I_FGS
I_LD
V_REG pin (7 V)
Conditions
Ratings
Unit
4.4 to 7.0
V
1 to 5
mA
0 to 8
V
0 to 5
mA
0 to 20
mA
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
63097HA(OT) No. 5686-1/16