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參數(shù)資料
| 型號： | L6275 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 5V DISK DRIVE SPINDLE & VCM, POWER & CONTROL “COMBO” |
| 中文描述： | 5V的磁盤驅(qū)動器主軸 |
| 文件頁數(shù)： | 3/17頁 |
| 文件大?。?/td> | 109K |
| 代理商： | L6275 |
PIN DESCRIPTION
(Pin Types:D = Digital,P = Power,A = Analog)
N.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Name
FCOM
CTAP
PWM/SLEW
OUT_C
I_SENSE
R_SENSE
OUT_B
GND
R_SENSE
OUT_A
INDEX
BRK_CAP
VDD
DGND
SYS_CLK
SDEN
SDATA
Function
Output of the Spindle zerocross or Current Sense circuit.
Spindle Central Tap used for differential BEMF sensing.
RC network sets the Spindle LinearSlew Rate and PWM OFF-Time.
Spindle DMOS Half Bridge Output and Input C for BEMF sensing.
Input to sense the voltage the SPINDLE Sense Resistor.
Output connection for the Motor Current Sense Resistor to ground.
Spindle DMOS Half Bridge Output and Input B for BEMF sensing.
Spindle Ground (Substrate).
Output connection for the Motor Current Sense Resistor to ground.
Spindle DMOS Half Bridge Output and Input A for BEMF sensing.
Input to allow Spindle to be locked to Index (servo) pulse.
Storage Capacitor for brake circuit. typically 5.9V.
+5V Power Supply for Spindle Power section.
Digital Ground.
Clock Frequency for system timers and counters.
Serial DataEnable. Active high input pin for the serial port enable.
Serial PortData. Input/Output pin for serial data, 8bits of instruction/address followed by 8
bits of data. Open pin is at logic low as an input.
Serial PortData Clock. Positive edge triggered clock input for the serial data.
Digital/Analog power supply. +5V nominally.
Reference Output for VCM control loop. Typically, half of the VCC except when parking.
Speed loop R/C compensation connection used for FLL mode operation.
VCM loop offset voltage used forcalibration.
External Main Charge Pump Capacitor, Typically, Vz+Vcc is about 17.8V
External Charge Pump Capacitor.
+5V Power Supply for VCM Power section.
VCM Power Amplifier negative output terminal.
Non inverting Input of the Sense Amplifier for VCM block.
Ground for VCM Power section.
Inverting Input of the Sense Amplifier for VCM block.
VCM Power Amplifier positive output terminal.
+5V Power Supply for VCM Power section.
Resistor for setting accurate bias current sources for the chip (62K required).
External ISOFET driver.
Power on Reset Output. Low signal indicates the failure of the supplies.
Set PointInput for 5V Supply Monitor ( 2Vthreshold, 100mV Hysteresis)
Capacitor connection to set the Power on Reset Delay (3V threshold, 2
μ
A charging)
Output of the Sense Amplifier.
Output of the Error Amplifier.
Inverting Input of the Error Amplifier.
Watchdog clock monitoring pin
Output of the VCM DAC.
Analog Ground. For bang gap voltage reference.
+12V PowerSupply for Spindle Power section.
External RC network that defines the compensation of the Spindle Transconductance Loop
in Linear Mode.
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
SCLK
VDD
V12/2
FLL_FILTER
VCM_CAL
CP
CS
VDD
VCM_A-
SENSE_IN+
VCM_GND
SENSE_IN-
VCM_A+
VDD
FLL_RES
SW1
PORB
TR_5V
POR_DELAY
SENSE_OUT
ERROR_OUT
ERROR_IN
CLK_MON
DAC
AGND
VCC
SPN_COMP
L6275
3/17
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