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PDF LB1976 Data sheet ( Hoja de datos )
| Número de pieza | LB1976 | |
| Descripción | Three-Phase Brushless Motor Driver | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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Ordering number : EN6088B
LB1976
Monolithic Digital IC
For Fan Motor
3-phase Brushless Motor Driver
http://onsemi.com
Overview
The LB1976 is a 3-phase brushless motor driver IC suited for use in direct PWM driving of DC fan motors for air
conditioners, water heaters, and other similar equipment. Since a shunt regulator circuit is built in, single power supply
operation sharing the same power supply for the motor is supported.
Features
• Withstand voltage 60V, output current 2.5A
• Direct PWM drive output
• 3 built-in output top-side diodes
• Built-in current limiter
• Built-in FG output circuit
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Supply voltage
Output current
Maximum input current
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
VM max
IO max
IREG max
Pd max1
Pd max2
Topr
Tstg
Conditions
VREG pin
Independent IC
With infinite hear sink
Ratings
7
60
2.5
10
3
20
-20 to +100
-55 to +150
Unit
V
V
A
mA
W
W
°C
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Semiconductor Components Industries, LLC, 2013
May, 2013
D2408 MS / 21003AS (OT) / 52199RM (KI) No.6088-1/10
1 page  
LB1976
Block Diagram and Peripheral Circuit
VCC
VREG S/S F/R
VCC
Reg
FG1 FG2
LVDS
TSD
Hys.Amp
H
IN1
H
IN2
Logic
H
IN3
VCTL
31kΩ
VCTL 40kΩ VCTL Amp
2.35V
PWM
OSC
VCREF VCOUT OSC
VM
OUT1
OUT2
OUT3
RF
Current
Limiter
0.5V
GND1 GND2 GND3
VM
Pin Functions
Pin No. Pin name
1 VCC
2 VREG
Pin voltage
4.5V to 6.7V
0.0V to 7.3V
Function
Power supply for blocks other than the
output block.
Shunt regulator output pin (7V).
Equivalent circuit
2
3 S/S
0.0V to VCC
Start/stop control pin.
Low: start
High or Open: stop
Typical threshold voltage for
VCC = 5V:
approx. 2.8V (low to high)
approx. 2.3V (high to low)
VCC
20kΩ
3.8kΩ
3
Continued on next page.
No.6088-5/10
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet LB1976.PDF ] | |
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