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Sanyo Electric Components Datasheet

LB11961 Datasheet

Single-Phase Full-Wave Fan Motor Driver

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Ordering number : EN8793B
LB11961
Monolithic Digital IC
Single-Phase Full-Wave
Fan Motor Driver
Overview
The LB11961 is a single-phase bipolar drive motor driver that easily implements direct PWM motor drive systems with
excellent efficiency. The LB11961 is optimal for fan motor drive in personal computer power supply systems and CPU
cooling fan systems.
Features
Single-phase full-wave drive (16V, 1.0A transistors are built in)
Built-in variable speed function controlled by a thermistor input
The LB11961 can implement quiet, low-vibration variable speed control using externally clocked high side transistor
direct PWM drive.
Built-in regenerative diode (Di); only requires a minimal number of external components.
Built-in HB
Minimum speed setting pin (allows full-speed mode operation at startup)
Operates in full-speed mode when the thermistor is removed.
Built-in lock protection and automatic recovery circuits
FG (speed detection) and RD (lock detection) outputs
Built-in thermal shutdown circuit
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment. The products mentioned herein
shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life,
aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system,
safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives
in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any
guarantee thereof. If you should intend to use our products for new introduction or other application different
from current conditions on the usage of automotive device, communication device, office equipment, industrial
equipment etc. , please consult with us about usage condition (temperature, operation time etc.) prior to the
intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely
responsible for the use.
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.
92111 SY 20110915-S00002/31407 TI PC 20070206-S00002 B8-6878 No.8793-1/7
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Sanyo Electric Components Datasheet

LB11961 Datasheet

Single-Phase Full-Wave Fan Motor Driver

No Preview Available !

www.DataSheet.co.kr
LB11961
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
VCC maximum output voltage
OUT pin maximum output
current
VCC max
IOUT max
18 V
1.0 A
OUT pin output voltage
HB maximum output current
VOUT max
IHB max
18 V
10 mA
VTH input pin voltage
VTH max
6V
RD/FG output pin output voltage VRD/FG max
18 V
RD/FG output current
IRD/FG max
10 mA
Allowable power dissipation
Pd max
When mounted on a circuit board *1
1.1 W
Operating temperature
Topr
-30 to +90
°C
Storage temperature
Tstg
-55 to +150
°C
*1 Specified circuit board : 114.3 × 76.1 × 1.6mm3, glass epoxy.
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.
Recommended Operating Conditions at Ta = 25°C
Parameter
VCC supply voltage
VTH input level voltage range
Hall sensor input common-mode
input voltage range
Symbol
VCC
VTH
VICM
Conditions
Ratings
4.5 to 16
0 to 9
0.2 to 3
Unit
V
V
V
Electrical Characteristics Unless otherwise specified Ta = 25°C, VCC = 12V
Parameter
Circuit current
6VREG voltage
HB voltage
CPWM high-level voltage
CPWM low-level voltage
CPWM oscillator frequency
CT pin high-level voltage
CT pin low-level voltage
ICT charge current
ICT discharge current
ICT charge/discharge current
ratio
OUT output low saturation
voltage
OUT output high saturation
voltage
Hall sensor input sensitivity
RD/FG output pin low-level
voltage
RD/FG output pin leakage
current
Symbol
ICC1
ICC2
V6VREG
VHB
VCRH
VCRL
FPWM
VCTH
VCTL
ICT1
ICT2
RCT
Conditions
Drive mode
Lock protection mode
I6VREG = 5mA
IHB = 5mA
C = 100pF
VOL
VOH
VHN
VRDL/FGL
IO = 200mA
IO = 200mA
Zero peak value (including offset and
hysteresis)
IRD/FG = 5mA
IRDL/FGL
VRD/FG = 7V
min
12
8
5.8
1.10
3.45
1.95
18
3.45
1.55
1.5
0.15
8.5
Ratings
typ
18
11
6
1.25
3.6
2.05
25
3.6
1.7
2
0.2
10
0.2
0.9
10
0.2
max
24
16
6.2
1.40
3.75
2.15
32
3.75
1.85
2.5
0.25
11.5
0.3
1.1
20
0.3
30
Unit
mA
mA
V
V
V
V
kHz
V
V
μA
μA
V
V
mV
V
μA
No.8793-2/7
Datasheet pdf - http://www.DataSheet4U.net/


Part Number LB11961
Description Single-Phase Full-Wave Fan Motor Driver
Maker Sanyo Semicon Device
Total Page 7 Pages
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