LB11970RV Datasheet, PDF (1/7 Pages) ON Semiconductor – Single-phase Full-wave Driver

Ordering number: ENA2095
LB11970RV
Monolithic Digital IC
For Fan Motor
Single-phase Full-wave Driver
http://onsemi.com
Overview
The LB11970RV is a motor driver of the single phase bipolar drive that a good direct PWM drive of the motor drive
efficiency can come true easily. It is most suitable for the power supply fan of the personal computer, CPU air
conditioner fan drive.
Functions
• Single-phase full-wave drive (16V to 1.2A output transistor incorporated)
• Variable speed function using thermistor input and external signal incorporated
→Enables silent and low-vibration variable speed control through direct PWM control with separately-excited upper
Tr
• Current limiter circuit (limit at IO=480mA with RL=1Ω connection, the limiter value determined with Rf)
• Kick-back absorption circuit incorporated
• Low-consumption, low-loss, and low-noise drive enabled by the soft switching circuit during phase shift
• Regeneration Di incorporated with less external parts
• HB incorporated
• Lock protection and automatic reset functions incorporated
• RD (Lock detection) output
• Thermal shutdown circuit incorporated
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
VCC maximum supply voltage
VM maximum supply voltage
VCC max
VM max
17
V
17
V
OUT pin maximum output current
OUT pin output withstand voltage
HB maximum output current
IOUT max
VOUT max
HB
1.2
A
18
V
10 mA
VTH, RMI input pin withstand voltage
VTH RMI max
7
V
P-IN input pin withstand voltage
VP-IN max
VCC
V
RD output pin output withstand voltage
RD output current
Allowable power dissipation
VRD max
IRD max
Pd max
Specified substrate *
18
V
10 mA
0.8
W
Operating temperature range
Topr
-30 to 90
°C
Storage temperature range
Tstg
-55 to 150
°C
* Specified substrate: 30mm×30mm×0.8mm, paper phenol.
Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high
current, high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.
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
71812 SY 20060927-S00008 No.A2095-1/7