Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate

the performance, characteristics, and functions of the described products in the independent state, and are not

guarantees of the performance, characteristics, and functions of the described products as mounted in the

customer

device, the customer should always evaluate and test devices mounted in the customer

equipment.

Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to

"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,

communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be

intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace

instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety

equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case

of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee

thereof. If you should intend to use our products for applications outside the standard applications of our

customer who is considering such use and/or outside the scope of our intended standard applications, please

consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our

customer shall be solely responsible for the use.

10709 MS/73099TH (OT)/53098RM (OT) No.5792-1/7

LB1991V

Overview

The LB1991V is a 3-phase brushless motor driver IC that is optimal for driving the DC fan motor.

Functions

• 3-phase full-wave voltage drive technique (120° voltage-linear technique)

• Torque ripple correction circuit (overlap correction)

• Speed control technique based on motor voltage and current control

• Built-in FG comparators

• Built-in thermal shutdown circuit

Specifications

Absolute Maximum Ratings at Ta = 25

°C

Parameter

Symbol

Conditions

Ratings

Unit

VCC1 max

10

V

VCC2 max

11

V

Maximum supply voltage

VS max

11

V

Applied output voltage

VO max

VS+2

V

Maximum output current

IO max

1.0

A

Allowable power dissipation

Pd max

Independent IC

440

mW

Operating temperature

Topr

-20 to +75

°C

Storage temperature

Tstg

-55 to +150

°C

Allowable Operating Ranges at Ta = 25

°C

Parameter

Symbol

Conditions

Ratings

Unit

VCC1

VCC1 ≤ VCC2

2.7 to 6.0

V

VCC2

3.5 to 9.0

V

Supply voltage

VS

Up to VCC2V

Hall input amplitude

VHALL

Between Hall effect element inputs

±20 to ±80

mVp-p

Monolithic Digital IC

For Fan Motor

3-phase Brushless Motor Driver

Ordering number : EN5792B