LB1876: Three-Phase Brushless Motor Driver for Polygon Mirror Motors

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.

Features

3-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

End Products

LBP/PPC

Data Sheets (1)

Document Title	Document ID/Size	Revision	Revision Date
Three-phase Brushless Motor Driver IC for Polygon Mirror Motors	EN6201/D (163.0kB)	0

Package Drawings (1)

Document Title	Document ID/Size	Revision
HSOP36 (375mil)	943AC (61.3kB)	A

Order Information

Product	Status	Compliance	Package		MSL*	Container		Budgetary Price/Unit
LB1876-MPB-E	Last Shipments	Pb-free	HSOP-36	943AC	3	Fan-Fold	20
LB1876-TLM-E	Active	Pb-free	HSOP-36	943AC	3	Tape and Reel	1000	$2.7946

Specifications

Product	Phase	VM Min (V)	VM Max (V)	VCC Min (V)	VCC Max (V)	IO Max (A)	IO Peak Max (A)	Control Type	Current Sense	Regulator Output	Fault Detection
LB1876-TLM-E	3	9.5	28	9.5	28		2.5	Clock	External Resistor	Yes	UVLO

Three-phase Brushless Motor Driver IC for Polygon Mirror Motors (163.0kB) LB1876

HSOP36 (375mil) LB1876