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PDF LV8850GA Data sheet ( Hoja de datos )
| Número de pieza | LV8850GA | |
| Descripción | Three-Phase sensorless FAN Motor Pre-Driver | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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Ordering number : ENA2205
LV8850GA
Bi-CMOS IC
Three-Phase sensorless
FAN Motor Pre-Driver
http://onsemi.com
Overview
LV8850GA is a pre-driver IC which is three-phase, sensorless and drives with PWM.
LV8850GA drives without a hole sensor, which is suitable for driving high-current motor which requires high
reliability and long life.
Function
• VCC+7V charge pump booster circuit for output drive
• Integrated Synchronous Rectifier circuit (Selected by SYNSEL pin)
• PWM or DC input signal is selectable (Selected by CTLSW pin)
• Adjustable PWM frequency (By the external capacitor at DC input mode)
• Integrated Current Limit circuit (highly accurate detection by using sensing (RFGND) pin for monitoring)
• Integrated Forward / Reverse rotation switch circuit (Selected by F/R pin)
• Integrated Lock Protection circuit with auto-recovery
• Output Lock Protection signal (RD pin) / Output 1-hole FG signal (FG pin)
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Maximum Supply voltage
Maximum VG voltage
Maximum RD/FG pin voltage
Maximum RD/FG pin current
Maximum Output pin voltage1
Maximum Output pin voltage2
Maximum Output pin current
Maximum Input pin voltage
Maximum VREG pin current
Allowable power dissipation2
VCC max
VG max
VFG max
IFG max
VO max1
VO max2
IO max
VL max
IVREG max
Pd max
VCC pin
VG pin
RD, FG pin
RD, FG pin
UH, VH, WH pin
UL, VL, WL pin
UH, VH, WH, UL, VL, WL pin
SOSC, LIM, VCTL, PWMOSC, CSDOSC
VREG pin
Mounted on a board. *1
Operating temperature
Topr
Storage temperature
Tstg
Junction temperature
Tj max
*1: Specified board: 76.1mm x 114.3mm x 1.6mm, glass epoxy board
Ratings
18
23
18
5
23
6
30
6
5
1.2
– 40 to 95
– 55 to 150
150
Unit
V
V
V
mA
V
V
mA
V
mA
W
deg.
deg.
deg.
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.
ORDERING INFORMATION
See detailed ordering and shipping information on page 13 of this data sheet.
Semiconductor Components Industries, LLC, 2013
July, 2013
72413NK 20130626-S00001 No.A2205-1/14
1 page  
Pin Assignment
LV8850GA
Equivalent Circuit
Pin No. Pin name
36 COM
1 CIN
2 FIL
3 FG
4 RD
5 TGND
6 TGND2
7 SOSC
Equivalent Circuit
VG VG VG
12
1kΩ 1kΩ
6kΩ
36
3
25Ω
4
VREG
25Ω
VREG
7
Continue to the next page
No.A2205-5/14
5 Page 
Application Circuit Example
LV8850GA
* Each fixed number in the following FIG. is the referential value. Make sure to adjust it according to External-FETs and
types of Motor.
*11
*11
D2 *17
D1 *17
*2
C11
C1 *4
CIN
1
FIL
2
*12
R2
*12
R1
FG
3
RD
4
TGND
5
TGND2
6
SOSC
*8 7
C3
LIM
R8 8
R7
*12
VCTL
9
R5 PWMOSC
*16 10
C2
*7
CDSOSC
11
C4
*6
SOFTST
12
C5
SGND
13
C8
*10
VREG
14
C9
*3
C10
*9
C7
VCC
15
CP1
16
CPC1
17
CPC2
18
*1E
*9
C6
*9
C12
*1A
*1B
*1D
COM
36
UOUT
35
VOUT
34
WOUT
33
UH
32
UL
31
VH
30
VL
29
WH
28
WL
27
PGND
26
RF
25
RFGND
24
F/R
23
SYNSEL
22
CTLSW
21
VG
20
CP2
19
*14 R10
C15 C21
*14
*14 R11
C16
R12
C17
R13
C18
C13
C22 *18
R14
C19
C23
R15
C20
R9
C14
FET
*5
R16
*1C
C1
1000pF B-EMF detection filter
C14
470pF RF filter
C2 470pF PWM oscillator
C15 220pF FET
C3 1000pF Start-Up oscillator C16 220pF FET
C4 2.2uF Lock-detection time C17
220pF FET
C5 2.2uF Soft Start time
C18 220pF FET
C6 0.15uF Charge pump
C19 220pF FET
C7 0.15uF Charge pump
C20 220pF FET
C12 0.47uF Charge pump
C21 0.1uF FET
C8 0.47uF VREG
C22 0.1uF FET
C9 10uF VREG
C23 0.1uF FET
C10 0.1uF VCC
C13 33uF VM
C11 47uF VCC
R1 100 Ω RD
R9 510 Ω RF filter
R2 100 Ω FG
R10 330 Ω FET, gate resistor
R3 100k Ω RD
R11 510 Ω FET, gate resistor
R4 100k Ω FG
R12 330 Ω FET, gate resistor
R5 100 Ω Input signal
R13 510 Ω FET, gate resistor
R7 100k Ω LIM
R14 330 Ω FET, gate resistor
R8 100k Ω LIM
R15 510 Ω FET, gate resistor
R16 0.2 Ω RF resistor
D1 DSE010
FET NTMD5836 Nch / Nch
D2 DSP10
A value of these circuit fixed number is one example. Make sure to adjust it according to External-FETs and types of
Motor.
No.A2205-11/14
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet LV8850GA.PDF ] | |
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