PRODUCT INFORMATION
The products in this series announced here support a wide range of application needs and include the
LA6552, LA6556, and LA6557H for use in CD and MD drives, and the LA6551 and LA6554H for
use in CD-ROM, CR-R/RW, and DVD-ROM drives.
Features
• Extensive lineup provides optimal support for a wide range of end products.
• Extensive set of additional functions for easier end product design.
• Low saturation voltage output achieves highly efficient drive.
• Integrated heat sink packages for easier thermal design.
• Maximum output current of 1 A provides ample current margin.
Specifications
Type No.
Feature
Supply voltage
Maximum output current
Package
Number of channels
BTL
H bridge
Mute
Vs
Standby
Pre-OP
Free-OP
Regulator
LA6551
Standby function
14
1
HSOP-36R
4
4
0
2:1:1
1
r
r
r
–
LA6552
Internal Vref
(channel 5 only)
14
1
HSOP-36R
5
5
0
2:1:1
1
–
r
–
r
LA6554H
LA6556
Channel 4 output Switching
voltage
between internal
setting
and external Vref
14
14
1
1
HSOP-28H-C
HSOP-36R
4
5
4
4
0
1
2:1:1
1:3; All BTL
2:1:1
1
–
–
–
r
–
–
–
r
LA6557H
Popularly-priced
product
14
0.7
HSOP-28H-C
5
4
1
1; All BTL
1
–
–
–
r
SANYO Electric Co., Ltd. Semiconductor Company Overseas Marketing Division
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