LB11693H Datasheet PDF - ON Semiconductor
| Part Number | LB11693H | |
| Description | 3-Phase Brushless Motor Driver | |
| Manufacturers | ON Semiconductor | |
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Ordering number : ENA0287
LB11693H
Monolithic Digital IC
3-Phase Brushless Motor Driver
for 24V Fan Motors
http://onsemi.com
Overview
The LB11693H reduces motor noise by imparting a slope to the output current when switching the phase to which
power
is applied. This motor driver includes an automatic recovery constraint protection circuit and is optimal for driving 24V
fan motors.
Functions
• Soft phase switching + direct PWM drive
• PWM control based on both a DC voltage input (the CTL voltage) and a pulse input
• Provides a 5 V regulator output
• One Hall-effect sensor FG output
• Integrating amplifier
• Automatic recovery constraint protection circuit (on/off = 1/14), RD output
• Current limiter circuit
• LVSD circuit
• Thermal protection circuit
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Supply voltage range
Output current
Allowable power dissipation 1
VCC max
IO max
Pd max1
T ≤ 500mS
Independent IC
Allowable power dissipation 2
Pd max2
When mounted on a circuit board *
Operating temperature
Topr
Storage temperature
Tstg
*: On the specified circuit board (114.3mm×76.1mm×1.6mm, glass epoxy)
Ratings
30
1.8
0.9
2.1
-30 to +100
-55 to +150
Unit
V
A
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.
Allowable Operating Ranges at Ta = 25°C
Parameter
Supply voltage rang
Constant voltage output current
RD output current
FG output current
Symbol
VCC
IREG
IRD
IFG
Conditions
Ratings
9.5 to 28
0 to -30
0 to 10
0 to 10
Unit
V
mA
mA
mA
Semiconductor Components Industries, LLC, 2013
May, 2013
92706 / 21306 MS OT 20051228-S00001 No.A0287-1/24
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LB11693H
Pin Function
Pin No.
34
36
2
Symbol
OUT1
OUT2
OUT3
Description
Motor drive output
4
GND2
Motor drive output system ground
7 VD Low side output transistor drive current supply
9 VM Motor drive output power supply and output
current detection.
Connect a resistor (Rf) between this pin and VCC.
The output current is limited to a value determined
by the equation IOUT = VRF/Rf.
Equivalent circuit
8
VCC
Power supply (Systems other than the motor drive
output)
10
VREG
5V regulator output
(control circuit power supply).
Connect a capacitor (about 0.1µF) between this
pin and ground for stabilization.
11 LVS Undervoltage protection voltage detection.
Connect this pin to VREG if the VREG level is to
be detected.
If the VCC level is to be detected, insert a zener
diode in series to set the detection level.
12
FGFIL
FG filter.
Normally, this IC will be used with this pin open.
Connect a capacitor between this pin and ground
if noise on the FG signal becomes a problem.
Continued on next page.
No.A0287-5/24
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| Information | Total 24 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ LB11693H.PDF Datasheet ] | |
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