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3935 Datasheet(PDF) 8 Page - Allegro MicroSystems

Part # 3935
Description  3-PHASE POWER MOSFET CONTROLLER
PDF  16 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

3935 Datasheet(HTML) 8 Page - Allegro MicroSystems

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3935
THREE-PHASE POWER
MOSFET CONTROLLER
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
8
Terminal Functions
A3935KED
A3935KJP
A3935KLQ
Terminal Name
Function
(PLCC)
(QLFP)
(SOIC)
CSP
Current-sense input, positive-side
31
19
1
VDSTH
DC input, drain-to-source monitor threshold voltage
32
20
2
LSS
Gate-drive source return, low-side
33
21
3
GLC
Gate-drive C output, low-side
36
22
4
SC
Load phase C input
37
26
5
GHC
Gate-drive C output, high-side
38
27
6
CC
Bootstrap capacitor C
39
28
7
GLB
Gate-drive B output, low-side
40
29
8
SB
Load phase B input
41
30
9
GHB
Gate-drive B output, high-side
42
31
10
CB
Bootstrap capacitor B
43
32
11
GLA
Gate-drive A output, low-side
44
33
12
SA
Load phase A input
3
34
13
GHA
Gate-drive A output, high-side
4
38
14
CA
Bootstrap capacitor A
5
39
15
VREG
Gate drive supply, positive
6
40
16
VDRAIN
Kelvin connection to MOSFET high-side drains
7
41
17
VBOOST
Boost supply output
8
42
18
BOOSTS
Boost switch, source
9
43
19
BOOSTD
Boost switch, drain
10
44
20
VBAT
Battery supply, positive
13
46
22
UVFLT
VBAT undervoltage fault output
14
3
23
OVFLT
VBAT overvoltage fault output
15
4
24
FAULT
Active-low fault output, primary
16
5
25
ALO
Gate control input A, low-side
17
6
26
AHI
Gate control input A, high-side
18
7
27
BHI
Gate control input B, high-side
19
8
28
BLO
Gate control input B, low-side
20
9
29
CLO
Gate control input C, low-side
21
10
30
CHI
Gate control input C, high-side
24
11
31
ENABLE
Gate output enable
25
12
32
OVSET
DC input, overvoltage threshold setting for VBAT
26
15
33
NC
Not connected, no external connection allowed
27
1,2,13,14,23,24,
–
25,35,36,37,47,48
CSOUT
Current-sense amplifier output
28
16
34
VDD
Logic supply, nominally +5 V
29
17
35
CSN
Current-sense input, negative-side
30
18
36
GND
Ground, dc supply returns, negative, and (for ED package)
1, 2, 11, 12,
45
21
heat sink tab
22, 23, 34, 35



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