SANYO LB1667M, LB1667, LB1668, LB1668M Datasheet

Overview

The LB1668 Series are 2-phase unipolar drive brushless
motor drivers that feature a wide usable voltage range and
a minimal number of required external components. They
also support the formation of motor lock protection and
automatic recovery circuits.

Functions and Features

• Output protection Zener diodes with variable breakdown
voltages
— When the Z1 and Z2 pins are open: V

OLM

= 57 V

— When the Z1 and Z2 pins are shorted: V

OLM

= 32 V

— An external Zener diode can be connected between

Z1 and VCC.

• Can support both 12-V and 24-V power supplies by
changing an external resistor.

• Hall elements can be connected directly.

• 1.5-A output current output transistors built in

• Built-in rotation detection function that outputs low
when driven and high when stopped (LB1668/M)

• FG signal function that sets FG high when IN- is low,
and sets FG low when IN- is high (LB1667/M)

• Motor lock protection and automatic recovery functions
built in

• Thermal shutdown function

Package Dimensions

unit: mm

3098B-DIP10S

unit: mm

3111-MFP14S

Monolithic Digital IC

Ordering number : EN*4944

13097HA (OT) No. 4944-1/7

Preliminary

SANYO: DIP10S

[LB1668, 1667]

SANYO: MFP14S

[LB1668M, 1667M]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN

Two-Phase Unipolar Drive

Brushless Motor Drivers

LB1668, 1668M, LB1667, 1667M

Parameter Symbol Conditions Ratings Unit

Maximum input current I

CC

max t ≤ 20 ms 200 mA

Output voltage V

OUT

Internal V

Output current I

OUT

1.5 A

Output minus current I

OM

–50 mA

RD/FG influx current I

RD/IFG

10 mA

RD/FG voltage V

RD/VFG

30 V

LB1667M, 1668M: Mounted on a printed circuit board

0.8 W

Allowable power dissipation

Pd max (20

× 15 × 1.5 mm3, glass epoxy)

LB1667, 1668 1.1 W
Operating temperature Topr –30 to +80 °C
Storage temperature Tstg –55 to +150 °C

Specifications

Absolute Maximum Ratings at Ta = 25°C

*:

These specifications are subject to change for improvement without notice.

No. 4944-2/7

LB1668, LB1668M, LB1667, LB1667M

Parameter Symbol Conditions Ratings Unit

Input current range I

CC

6.0 to 50 mA

Common-mode input voltage range V

ICM

0 to VIN–1.5 V

Allowable Operating Ranges at Ta = 25°C

Parameter Symbol Conditions

Ratings

Unit

min typ max

Output limit voltage

V

OLM

1 Z1, Z2 open 54 57 60 V

V

OLM

2 Z1, Z2 short 31 33 35 V

Vosat1 I

O

= 0.5 A 0.95 1.2 V

Output saturation voltage Vosat2 I

O

= 1.0 A 1.15 1.5 V

Vosat3 I

O

= 1.5 A 1.4 2.0 V

V

IN

voltage V

IN

ICC= 7.0 mA 6.4 6.7 7.0 V

Amplifier input offset voltage V

OFF

–7.0 0 +7.0 mV

Amplifier input bias current I

BA

–250 nA

RD/FG output saturation voltage V

RD

sat/VFGsat IRD/IFG= 5 mA 0.1 0.3 V

C outflow current I

C

1 2.1 3.0 3.9 µA

C discharge current I

C

2 0.31 0.44 0.59 µA

Comparator input threshold voltage

V

TH

1 0.77 0.8V

IN

0.83 V

V

TH

2 0.42 0.45V

IN

0.48 V
Thermal shutdown current operating temperature TSD Design target value 180 °C
Thermal shutdown circuit hysteresis ∆TSD Design target value 40 °C

Electrical Characteristics at Ta = 25°C, ICC= 10 mA

Block Diagram and Application Circuit

Pin AssignmentsTruth Table (LB1667, LB1667M)

IN+ IN– C OUT1 OUT2 FG

H L L H L H
L H L L H L
H L H H H H
L H H H H H

Truth Table (LB1668, LB1668M)

IN+ IN– C OUT1 OUT2 RD

H L L H L L
L H L L H L
H L H H H H
L H H H H H

LB1668M Application Circuits

• 12-V power supply type

• 24-V power supply type

• Circuit for use when large output currents are required and heat dissipation is high.

No. 4944-3/7

LB1668, LB1668M, LB1667, LB1667M