Ordering number : ENA0707
Monolithic Digital IC
For Fan Motor
LB11970FV
Single-phase Full-wave Driver
Overview
The LB11970FV is a single-phase full-wave driver for fan motor.
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 I =480mA with R =1Ω connection, the limiter value determined with Rf)
O
L
• 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
• FG (rotation detection) output
• Thermal shutdown circuit incorporated
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
max
CC
Conditions
Ratings
Unit
V
V
maximum supply voltage
V
17
17
CC
VM maximum supply voltage
VM max
max
V
OUT pin maximum output current
OUT pin output withstand voltage
I
1.2
18
A
OUT
V
max
V
OUT
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"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
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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's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer
's products or
equipment.
30707 MS IM B8-8588, B8-8433 No.A0707-1/7