View LA6546M_288224.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Ordering number : ENN6350
Monolithic Linear IC
LA6557H
Five-Channel Bridge Driver for MD and CD Players
Overview
The LA6557H is a five-channel bridge driver developed for use in CD and MD players. It provides four BTL power amplifier channels and one H-bridge power amplifier channel.
Package Dimensions
unit: mm 3234-HSOP28H-C
[LA6557H] 15.3 6.2 2.7
Features and Functions
* Four BTL power amplifier channels and one H-bridge power amplifier channel * IOmax: 700 mA (each channel) * Built-in level shifter circuits (BTL amplifiers) * One muting circuit (output on/off control) system that operates for the BTL amplifiers * Thermal shutdown circuit built in
28
15
0.65 0.25 1.3
Ratings 14 Unit V A V V W W C C 0.7 13 13 0.82 2.0 -30 to +85 Ratings 5.6 to 13 Unit V
1
14
0.85 2.25
0.8
0.3
2.5max
Specifications
Maximum Ratings at Ta = 25C
Parameter Supply voltage Maximum output current Maximum input voltage Mute pin voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max IOmax VINBmax VMUTE Pd max Topr Tstg Independent IC
0.1
SANYO: HSOP28H-C (375mil)
Conditions
For each channel in channels 1 to 5
Mounted on the specified printed circuit board*
-55 to +150
Note: * Specified printed circuit board: 76.1 x 114.3 x 1.6 mm3 glass-epoxy PCB
Operating Conditions at Ta = 25C
Parameter Recommended supply voltage Symbol VCC Conditions
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's 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
51900RM (OT) No. 6350-1/8
10.5
7.9
4.9
LA6557H Pd max -- Ta
3.0
Allowable power dissipation, Pdmax -- W
2.5 Mounted on the specified printed circuit board (76.1 x 114.3 x 1.6 mm3 glass-epoxy board) 2.0
1.5 1.04 Independent IC
1.0 0.82 0.5
0.43
0 -30 -40 -20
0
20
40
60
80
100
Ambient temperature, Ta -- C
Electrical Characteristics at Ta = 25C, VCC1 = VCC2 = 8 V, VREF = 1.65 V
Parameter No-load current drain: on No-load current drain: off VREF input voltage range [BTL Amplifier Block] Output offset voltage Input voltage range Output voltage Closed-circuit voltage gain Slew rate Mute on voltage Mute off voltage [H Bridge Block] Output voltage Low-level input voltage High-level input voltage [Regulator Block] Output voltage Output load regulation Supply voltage regulation Notes:1. 2. 3. 4. Vreg VRL VVCC IL = 100 mA IL = 0 to 200 mA VCC = 6 to 12 V, IL = 100 mA 4.75 -50 -15 5 0 21 5.25 10 60 V mV mV VO-LOAD VIN-L VIN-H 2 The voltage between VO+ and VO- for each channel when RL = 8 .*2 6 1 V V V VOFF VIN VO VG SR VMUTE-ON The voltage difference between outputs for the BTL amplifiers The input voltage range The voltage between VO+ and VO- for each channel when RL = 8 .*2 Gain from input to output For independent amplifiers. Twice when measured between outputs *4 For each MUTE *3 2 -50 0 4 5 12 0.5 0.5 +50 VCC mV V V dB V/s V V Symbol ICC-ON ICC-OFF VREF-IN Conditions All outputs on*1, FWD = REV = 0 V All outputs off*1, FWD = REV = 0 V 1 Ratings min typ 30 10 max 50 20 VCC-1 Unit mA mA V
VMUTE-OFF For each MUTE *3
The total current drain for VCC1 and VCC2 with no load. The voltage across an 8 load. With the output saturated. MUTE: When the MUTE pin is high, the outputs will be on, and when low, off (high impedance) These values are design guarantee values, and are not tested.
No. 6350-2/8
28
1 27 2 26 3 4 5 6 7 FR 8 9 10 11 12 13 14 25 24 23 22 FR FWD S-GND MUTE VIN4 VIN4G VCC-S
Pin Assignment
VCC2 REV VO5- VO5+ VO4+ VO4- VO3+ VO3-
LA6557H
LA6557H
21
VO2+ VO2- VO1+ VO1- VCC1 VIN1
VREF-IN 20 19 18 17 16 15 REG-OUT REG-IN VIN3G VIN3 VIN2G
Top view
VIN1G
VIN2
No. 6350-3/8
LA6557H Pin Description
Pin No. 1 Pin VCC2 Function Channel 3, 4, and 5 power supply (shorted to VCC1 and VCC-S) Equivalent circuit
2 3
VO5- VO5+
Loading output (-) Loading output (+)
2 3 VO5+ VO5-
HM0001
4 5 6 7 8 9 10 11
VO4+ VO4- VO3+ VO3- VO2+ VO2- VO1+ VO1-
Channel 4 output (+) Channel 4 output (-) Channel 3 output (+) Channel 3 output (-) Channel 2 output (+) Channel 2 output (-) Channel 1 output (+) Channel 1 output (-)
OUT 4,5,6,7, 8,9,10,11
HM0002
12
VCC1
Channel 1 and 2 (BTL) power supply (shorted to VCC-S and VCC2)
13 15 17 24
VIN1 VIN2 VIN3 VIN4
Channel 1 input Channel 2 input Channel 3 input Channel 4 input
VIN 13 (15,17,24) VING 14 (16,18,23)
14 16 18 23
VIN1G VIN2G VIN3G VIN4G
Channel 1 input (gain adjustment) Channel 2 input (gain adjustment) Channel 3 input (gain adjustment) Channel 4 input (gain adjustment)
Vref 21
HM0003
Notes: The center frame (FR) functions as the power system ground. It must be, along with S-GND, at the lowest potential in the system. The power supply pins, VCC-S, VCC1, and VCC2 must be shorted together externally to the IC.
Continued on next page.
No. 6350-4/8
LA6557H
Continued from preceding page.
Pin No. 19 20 21 22 Pin REG-IN REG-OUT VREF-IN VCC-S Function Regulator input (base of the external pnp transistor) Regulator output (collector of the external pnp transistor) Reference voltage input Signal system power supply (shorted to VCC1 and VCC2) Equivalent circuit
VCC 1 (12)
MUTE 25
25 MUTE Output on/off control for channels 1 to 4 (the BTL amplifiers)
100 k 100 k S-GND 26
HM0004
26
S-GND
Signal system ground
27
FWD
Channel 5 (VLO) output switching (FWD), logic input to the loading block Channel 5 (VLO) output switching (REV), logic input to the loading block
27 FWD
28
REV
HM0005
Notes: The center frame (FR) functions as the power system ground. It must be, along with S-GND, at the lowest potential in the system. The power supply pins, VCC-S, VCC1, and VCC2 must be shorted together externally to the IC.
No. 6350-5/8
LA6557H Block Diagram
Output control
Input
VCC2
1
Power supply for channels 3, 4, and 5
Thermal shutdown circuit
28
REV
VO5-
2 CH5
27
FWD
VO5+
3
Level shifter
VO4+
4 CH4
The MUTE pin functions as follows: High: output on Low: output off Mute 22 k
- +
26
S-GND
25
MUTE
11 k 24 VIN4
VO4-
5
Level shifter
VO3+
6 CH3
23
VIN4G
VO3-
7
Signal system power supply
22
VCC-S
FR
- +
FR
VO2+
8 CH2
Level shifter
5 VREG (with an external PNP transistor)
+ -
- +
21
VREF-IN
VO2-
9
20
REG-OUT
VO1+
10 CH1
Level shifter
19 22 k
- +
REG-IN
VO1-
11
18 11 k 17
VIN3G
VCC1
12
Power supply for channels 1 and 2 22 k 11 k
- +
VIN3
22 k 16
- +
VIN1
13
VIN2G
11 k 15 VIN2
VIN1G 14
No. 6350-6/8
LA6557H Sample Application Circuit
1 VCC2
REV
28
REV
2 VO5- Loading motor M 3 VO5+
FWD 27
FWD
S-GND 26
MUTE
4 Tracking coil 5
VO4+
MUTE 25
VO4-
VIN4
24
6 Focus coil
VO3+
VIN4G
23
7 VO3-
VCC-S
22
F R
LA6557H
VO2+
F R
8 Spindle motor M 9
VREF-IN 21
VO2-
REG-OUT
20
10 VO1+ Sled motor M 11 VO1-
REG-IN
19
VIN3G
18
VCC
12 VCC1
VIN3
17
TRACKING VREF-IN
13 VIN1
VIN2G
16 FOCUS 15 SPINDLE
14 VIN1G
VIN2
SLED
No. 6350-7/8
LA6557H System Diagram (Relationship between MUTE and the power supplies (VCC*))
CH1 VCC1 CH2 MUTE CH3 CH4 H bridge VCC2
Note: * VCC1 and VCC2 must be connected externally. H Bridge Block
FWD L L H H REV L H L H VO5+ OFF H L L VO5- OFF L H L Mode Open *1 Forward Reverse Brake *2
Notes: 1. The outputs are in the high-impedance state in this mode. 2. During braking, the sink side transistor will be turned on (short braking). VLO+ and VLO- will be close to the ground level.
Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of May, 2000. Specifications and information herein are subject to change without notice. PS No. 6350-8/8

▲Up To Search▲

Price & Availability of LA6546M

	To Download LA6546M Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .