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L6256 Datasheet(PDF) 3 Page - STMicroelectronics

Part # L6256
Description  12V COMBO
PDF  28 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6256 Datasheet(HTML) 3 Page - STMicroelectronics

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THERMAL DATA
Symbol
Description
Value
Unit
Rth j-pins
Rth j-amb
Thermal Resistance Junction-pins
Thermal Resistance Junction-ambient (*)
Max.
Max.
12
50
°C/W
°C/W
(*) Mounted on board with minimized dissipating copper area.
PIN DESCRIPTION
Pin #
Pin Name
Pin Description
Type
1
SP_B
Spindle Output, Ph B
Power/Output
2, 42
SP_P1, SP_P2
Spindle driver Supply
Power/Input
3
SP_C
Spindle Output, Ph C
Power/Output
4,44
SP_G1,SP_G2
Spindle Driver Ground
Power/Output
5
SP_CLK
Spindle Clock Input
Cmos/Input
6,7,29,39,40
GND
Power Ground
Ground/Heatsink
8
R_SLEW
Spindle Slew/FeedFwd Osc. Freq.
Analog/Input
9
POR_RC
Ext. POR Timing Cap.
Analog/Output
10
nPOR
POR Reset (Active LOW)
Cmos/BIO
11
PWM_IN
Spindle PWM Input
Cmos/Input
12
BEMF_DET
Spindle BEMF Output
Cmos/Output
13
SCLK
Serial Data Clock
Cmos/Input
14
SDIO
Bidirectional Serial Data I/O
Cmos/BIO
15
VCC
5V Digital Supply
Supply/Input
16
BYPASSC
Not to be used
-
17
5V_GND
5V Supply Ground
Ground/Output
18
CP_OUT
Charge Pump Pumping Cap
Analog/Output
19
CP_CAP
Charge Reservoir Cap
Analog/Input
20
QDRIVE
3.3V Regulator Base Drive
Analog/Output
21
VREG_IN
3.3V Regulator Voltage Feedback
Analog/IO
22
CUR_IN
3.3V Regulator Current Feedback
Analog/IO
23
B_OUT
VCM Driver Output, B
Power/Output
24
VC_PWR
VCM Drivers Supply
Power/Input
25
A_OUT
VCM Driver Output, A
Power/Output
26
I_VC
VCM Sense Amplifier Input
Analog/Input
27
PARK
VCM Park Pin
Analog/Input
28
CSELB
Chip Select
-
30
A_IN
VCM A-Amplifier Input
Analog/Input
31
IO_VC
VCM Sense Amplifier Output
Analog/Output
32
DAC
VCM DAC Command Output
Analog/Output
33
H_VPWR
VCM Vpwr/2 Reference Voltage
Analog/Output
34
VDD
12V Analog Supply
Supply/Input
35
REF_IN
Spindle Current Limit/Win Threshd
Analog/Input
36
PWM_DC
Spindle Filtered PWM Input
Analog/Input
37
FF_COMP
Spindle Feedforwd Ramp Generator
Analog/Input
38
SH_OUT
Spindle BEMF Sample/Hold
Analog/Output
41
C_TAP
Spindle Centre Tap
Analog/Input
43
SP_A
Spindle Output, Ph A
Power/Output
L6256
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