LB1921, LB1922, LB1923 Selling Leads, Datasheet
MFG:NEW Package Cooled:DIP D/C:N/A
LB1921, LB1922, LB1923
- Table of contents:
Info of LB1921
Info of LB1922
Info of LB1923
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About LB1921
PDF/DataSheet Download
Datasheet: LB1921
File Size: 141445 KB
Manufacturer: SANYO [Sanyo Semicon Device]
Download : Click here to Download
About LB1922
PDF/DataSheet Download
Datasheet: LB1922
File Size: 126235 KB
Manufacturer: SANYO [Sanyo Semicon Device]
Download : Click here to Download
About LB1923M
PDF/DataSheet Download
Datasheet: LB1923M
File Size: 113636 KB
Manufacturer: SANYO [Sanyo Semicon Device]
Download : Click here to Download
LB1921 Maximum Ratings
| Parameter | Symbol | Conditions | Ratings | Unit |
| Maximum supply voltage 1 | VCC max | 30 | V | |
| Maximum supply voltage 2 | VM max | 30 | V | |
| Output current | IO max | T 100 ms | 3.5 | A |
| Allowable power dissipation 1 | Pd max1 | Independent IC | 3 | W |
| Allowable power dissipation 2 | Pd max2 | With an arbitrarily large heat sink | 20 | W |
| Operating temperature | Topr | 20 to +80 | °C | |
| Storage temperature | Tstg | 55 to +150 | °C |
LB1921 Features
• The LB1921 is an improved output current version of the LB1824.
• Three-phase bipolar brushless motor driver
• Digital speed control circuit
• Thermal shutdown circuit
• Start/stop pin
• Lock detector output
• Crystal oscillator and divider circuits
• FG and error amplifiers
• Power supply current limiter
• Three-phase bipolar brushless motor driver
• Digital speed control circuit
• Thermal shutdown circuit
• Start/stop pin
• Lock detector output
• Crystal oscillator and divider circuits
• FG and error amplifiers
• Power supply current limiter
LB1921 Typical Application
• Paper feed and drum motor drivers in FAX and PPC units
LB1921 Connection Diagram
LB1922 General Description
The LB1922 is a single-chip drive circuit that provides the direct PWM drive output appropriate for the power brushless motors used in office automation equipment. It provides a variety of peripheral circuits on chip, including a speed control circuit and an FG amplifier. It is optimal in systems that use a 12-V power supply.
LB1922 Maximum Ratings
|
Parameter |
Symbol |
Conditions |
Ratings |
Unit |
| Supply voltage |
VCC |
20 |
V | |
|
VM |
20 |
V | ||
| Output current |
IO |
T 100 ms |
3.1 |
A |
| Allowable power dissipation |
Pd max*1 |
Independent IC |
3 |
W |
|
Pd max*2 |
With an arbitrarily large heat sink |
20 |
W | |
| Operating temperature |
Topr |
-20to+80 |
°C | |
| Storage temperature |
Tstg |
-55to+150 |
°C |
LB1922 Connection Diagram
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