SANYO LA6570

Ordering number : ENN*7874
LA6570
Monolithic Linear IC
5CH Driver (BTL : 4CH, H-Bridge : 1CH) for CD
Overview
The LA6570 is a 5CH driver (BTL : 4CH, H-bridge : 1CH) for CD players.
Features
• Built-in POWER AMP 5CH (bridge connection (BTL) : 4CH, H-bridge : 1CH)
• IO max 1A
• Built-in level shift circuit (Except H-bridge.)
• Built-in MUTE circuit (output ON/OFF).
(Operates only for CH1 to CH4 BTL AMP. No operation for H-bridge and 5VREG.)
• Built-in 5V regulator (with external PNP transistor)
• Implements VREF switching function (Select H for external, or L for internal (2.5 V))
• Built-in overheat protection circuit (Thermal shutdown)
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Power supply voltage
Symbol
Allowable operation
Pd max
Maximum output current
IO max
Maximum input voltage
VINB
MUTE pin voltage
Conditions
Ratings
VCC max
Unit
14
Independent IC
0.8
Specific board *
2.0
Each output of CH1 to CH4 and H-bridge
VMUTE
V
W
1
A
13
V
13
V
Operating temperature
Topr
-30 to +85
°C
Storage temperature
Tstg
-55 to +150
°C
* Specific board size: 76.1 mm × 114.3 mm × 1.6 mm, board material: glass epoxy resin.
Recommended Operating Conditions at Ta = 25°C
Parameter
Power supply voltage
Symbol
VCC
Conditions
Ratings
Unit
5.6 to 13
V
61004 JO IM No.7874-1/3
LA6570
Electrical Characteristics at Ta = 25°C, VCC1 = VCC2 = 8V, VREF = 2.5V unless otherwise specified
Parameter
Symbol
Conditions
Ratings
min
typ
Unit
max
[Whole]
No-load current consumption ON
ICC-ON
BLT AMP output ON, LODING block OFF *1
30
50
mA
No-load current consumption OFF
ICC-OFF
All output OFF *1
10
15
mA
Thermal shutdown operating temperature
TSD
175
200
°C
-10
10
mV
1
VCC-1.5
Design guaranteed performance
150
[VREF-AMP]
VREF-AMP offset voltage
VREF-OFFSET
VREF input voltage range
VREF-IN
VREF-OUT output current
I-VREF-OUT
CH1 input reference voltage
2
5
V
mA
[BTL AMP block] (CH1 to CH4)
Output offset voltage
VOFF
Voltage differences between BTL AMP and
each channel output. *2
Input voltage range
VIN
Input voltage range of input OP-AMP
Output voltage
VO
For RL = 8Ω, between each VO+ and VO- *3
Closed circuit voltage gain
Slew rate
VG
SR
Gain between input and output,
input OP-AMP:BUFFER
-50
0
VMUTE-ON
Output ON voltage, each MUTE *4
MUTE OFF voltage
VMUTE-OFF
Output OFF voltage, each MUTE *4
VCC-1.5
5.7
6.2
3.6
4
For output by AMP alone, it must be doubled
MUTE ON voltage
50
mV
V
V
4.4
0.5
times
V/µs
2
V
0.5
V
VCC-1.5
V
[Input AMP block] (CH1 to CH4)
Input voltage range
Output current (SINK)
Output current (SOURCE)
VIN-OP
0
SINK-OP
SOURCE-OP
2
*5
Output offset voltage
VOFF-OP
CH1 input switching voltage 1
VSW-OP1
CH1 input AMP (B), external VREF selected *6
CH1 input switching voltage 2
VSW-OP2
CH1 input AMP (A), Internal VREF selected *6
300
mA
µA
500
-10
10
mV
0.5
V
2
V
[Loading block] (CH5, H-bridge)
Output voltage
Brake output saturation voltage
VO-LOAD
VCE-BREAK
Input "L" level
VIN-L
Input "H" level
VIN-H
Between outputs for Normal/Reverse rotation,
RL = 8Ω
5.7
6.5
For brake, output voltage *8
V
0.3
V
1
V
2
V
[Power supply block] (with external PNP transistor : 2SB632K is used)
5V power supply output
REG-IN SINK current
VOUT
REG-IN-SINK
IO=200mA
Base current of external PNP transistor *9
4.8
5.0
5
10
5.2
V
mA
Line regulation
∆VOLN
6V≤VCC≤12V, IO=200mA
10
100
mV
Load regulation
∆VOLD
5mA≤IO≤200mA
10
100
mV
*1. Total current consumption of VCC1 and VCC2 when non-load.
*2. Input AMP is BUFFER AMP.
*3. Voltage differences between both ends of load (8Ω). Output is saturated.
*4. When MUTE is "H", output is ON. When MUTE is "L", output is OFF (HI impedance).
*5. Input OP-AMP SOURCE is constant current. Since 11kΩ resistance to the next level is loaded,
special care should be taken for the gain setting of input OP-AMP.
*6. When VIN1-SW is "L", select AMP-A for input AMP and internal VREF (nearly equal to 2.5V) for VREF.
When VIN-SW is "H", select AMP-B for input AMP and external VREF (nearly equal to VREF-IN) for VREF.
*7. Voltage of upper side (SOURCE) and lower side (SINK). For Normal/Reverse rotation. Output voltage is obtained
by subtracting this value from VCC.
*8. Brake is short (GND) brake. Output of SINK side is ON.
*9. 5VREG has built-in dropping protection circuit. Operates when base current is 10mA (TYP).
No.7874-2/3
LA6570
Package Dimensions
unit : mm
3251
PS No.7874-3/3