|
|
|
부품번호 | LD7000 기능 |
|
|
기능 | Spindle/VCM Controller and Pre-driver | ||
제조업체 | Ldic | ||
로고 | |||
전체 2 페이지수
www.DataSheet4U.com
LD7000
Spindle/VCM Controller and Pre-driver
DESCRIPTION
The LD7000 Servo and Spindle Predriver, a CMOS
monolithic integrated circuit housed in a 64-lead
TQFP package operates from +5 V and +12 V
supplies. It is designed to drive a voice coil actuator
and a 3-phase, Hall-sensorless motor with external
power MOSFETs. The device is intended for use in
12 V disk drive applications.
The actuator driver includes a saturation detector to
monitor the loop compensation amplifier for
saturation, an uncommitted opamp for input signal
conditioning, a voltage reference to provide a precise
voltage level for internal PWM buffers, and reduced
power dissipation.
The spindle driver includes a µP controlled startup
ramp to replace the imprecise analog ramp, an
external PWM input to allow PWM frequencies
above the audible range, active pullup on the P
driver, adjustable N-channel slew rate, and improved
spindle brake performance.
FEATURES
• Small footprint 64 or 48 pin TQFP package
• Spindle driver is PWM during run and start
• Commutator is driven by a phase lock loop for
high jitter immunity
• Adjustable slew rate to minimize stress in the
power MOSFETs
• Microprocessor controlled spindle startup
• Saturation detector to monitor loop
compensation amplifier status
• Precision low voltage monitor circuitry for both
+5 V and +12 V supplies, LD7000 only
• Dual level retract scheme includes adjustable
pulse mode, LD7000 only
• Serial Port control
A precision low voltage monitor circuit is also added
to monitor +5 V and +12 V supplies and to inDitaiattaeSheet4U.com
servo head retracts during voltage faults. All
functions are controlled by an SSI compatible
read/write serial port.
Three DC-DC converter circuits for 2.5V,3.3V,&-3/-
5Vsupplies are also available for digital chips and
MR bias negative supply.
DataShee
DataSheet4U.com
version 2.1
| |||
구 성 | 총 2 페이지수 | ||
다운로드 | [ LD7000.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
LD7000 | Spindle/VCM Controller and Pre-driver | Ldic |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |