LV8804V Sanyo Semiconductor Corporation, LV8804V Datasheet - Page 6

• Manufacturer Part Number: LV8804V
• Description: PC and Server Fan Motor Driver
• Manufacturer: Sanyo Semiconductor Corporation

Continued from preceding page.
Pin No.
32, 33,
24, 26,
18, 19
34, 35
11
12
14
16
17
20
21
22
23
30
29
28
27
FG
1/2FG
RD
CT
OSC
GND
VG
CP
CPC
SUB_GND
V CC
UO
VO
WO
RF
Pin name
FG pulse output. This pin outputs a Hall
sensor system equivalent pulse signal.
FG pulse output. This pin outputs 1/2 Hall
sensor system equivalent pulse signal.
Motor lockup detection output.
Output is fixed high when motor is locked up.
Motor lockup detection time setting.
When the motor lockup condition is detected,
the protection time period before the
protection circuit is activated is set by
connecting a cacacitor between this pin and
ground.
Motor startup frequency setting. A capacitor
must be connected between this pin and
ground. The startup frequency is adjusted by
controlling the charge/discharge current and
capacitance of the capacitor.
GND pin.
Charge pump step-up voltage output.
A capacitor must be connected between this
pin and the V CC pin or ground.
Charge pump step-up pulse output pin.
A capacitor must be connected between this
pin and the CPC pin (pin 22).
Charge pump step-up pin.
A capacitor must be connected between this
pin and the CP pin (pin 21).
GND pin.
Power supply for the IC and motor.
Capacitors must be connected between
these pins and ground.
Output pins. Connect these pins to the U, V,
and W of the motor coil.
Output current detection pins. The drive
current is detected by connecting a resistor
between these pins and ground.
Function
LV8804V
17
VREG
VREG
28
VREG
500Ω
500Ω
29
21
Equivalent circuit
11
V CC
12
14
16
30
500Ω
22
No.A1407-6/10
32 33
34 35
24
26 27
20