LB1668 Datasheet, PDF (1/7 Pages) Sanyo Semicon Device – Two-Phase Unipolar Drive Brushless Motor Drivers

Ordering number : EN*4944
Preliminary
Monolithic Digital IC
LB1668, 1668M, LB1667, 1667M
Two-Phase Unipolar Drive
Brushless Motor Drivers
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 V_CC.
• 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
[LB1668, 1667]
unit: mm
3111-MFP14S
[LB1668M, 1667M]
SANYO: DIP10S
Specifications
Absolute Maximum Ratings at Ta = 25°C
SANYO: MFP14S
*: These specifications are subject to change for improvement without notice.
Parameter
Maximum input current
Output voltage
Output current
Output minus current
RD/FG influx current
RD/FG voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
I_CC max
V_OUT
I_OUT
I_OM
I_RD/I_FG
V_RD/V_FG
Pd max
Topr
Tstg
t ≤ 20 ms
Conditions
LB1667M, 1668M: Mounted on a printed circuit board
(20 × 15 × 1.5 mm³, glass epoxy)
LB1667, 1668
Ratings
Unit
200
mA
Internal
V
1.5
A
–50
mA
10
mA
30
V
0.8
W
1.1
W
–30 to +80
°C
–55 to +150
°C
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
13097HA (OT) No. 4944-1/7