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LB11975 Datasheet

  • LB11975

  • High-Speed CD-ROM Spindle Motor Driver IC

  • 120.38KB

  • 12頁

  • SANYO

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Ordering number : ENN6497A
Monolithic Digital IC
LB11975
High-Speed CD-ROM Spindle Motor Driver IC
Overview
The LB11975 is a monolithic bipolar IC developed for
uses as a spindle motor driver for high-speed CD-ROM
and DVD-ROM drives. To minimize heat generation
during high-speed rotation and braking, the LB11975
adopts direct PWM drive in the output stage. During
reverse braking the upper and lower side output transistors
are both driven in PWM mode to implement dual PWM
controlled braking. The device thus controls the current to
remain under a limit value and prevent rapid heat
generation. This prevents device destruction due to rapid
heating. The absolute maximum voltage rating is 27 V,
and the maximum current is 2.5 A.
Package Dimensions
unit: mm
3251-HSOP36R
[LB11975]
17.8
(6.2)
36
19
(4.9)
7.9
(0.5)
2.25
0.8
2.0
0.3
Functions and Features
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Direct PWM drive (lower side control)
Built-in upper and lower side output diodes
Supports the use 3.3 V DSP devices.
Power saving function for standby mode
Hall FG output (1 or 3 Hall device operation)
Built-in Hall device power supply
Reverse rotation detection output and drive cutoff circuit
Voltage control amplifier
Current limiter circuit
Thermal protection circuit
2.45max
0.1
2.7
SANYO: HSOP36R
Allowable power dissipation, Pd max 鈥?W
Pd max 鈥?Ta
2.4
2.1
2.0
Mounted on the specified printed circuit
(114.3
脳
76.1
脳
1.6 mm
3
glass epoxy board)
1.6
1.26
1.2
Independent IC
0.9
0.8
0.54
0.4
0
鈥?0
0
20
40
60
80
100
Ambient temperature, Ta 鈥?/div>
擄C
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft鈥檚
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
11201RM (OT) No. 6497-1/12
0.65
1
18
10.5
0.25

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