AN8819NFB [PANASONIC]
4Ch. Linear Driver IC DC-DC Converter Control for CD; 4通道。线性驱动器IC的DC -DC转换器控制CD
| 型号： | AN8819NFB |
| 厂家： | 
PANASONIC |
| 描述： | 4Ch. Linear Driver IC DC-DC Converter Control for CD |
| 文件： | 总11页 (文件大小：117K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ICs for CD/CD-ROM Player
AN8819NFB
4Ch. Linear Driver IC + DC-DC Converter Control for CD
■ Overview
Unit : mm
33
23
The AN8819NFB is a 4ch. driver employing the low
consumption power type H-bridge method which can
operate with low voltage. It is suitable particularly for a
22
34
portable CD player.
■ Features
•
•
•
Wide output D-range is available regardless of the ref-
erence voltage on the system
44
12
Driver input/output gain setting enabled by an external
resistance
For 2 channels, independent power on/off feature built-
in. For other 2 channels, simultaneous on/off feature
provided.
1
11
0.9±0.1
(0.6)
•
•
Thermal shut down circuit (with hysteresis) built-in
PWM control of the driver supply enabled by an exter-
nal circuit for low consumption power operation
Construction of DC-DC converter enabled by an exter-
nal circuit
Construction of ripple filter for D/A converter enabled
by an external capacitor
Construction of PWM control circuit of laser output by
an external circuit for low consumption power operation
Reset circuit with a mute and battery voltage detection
circuit built-in for rational design of a set
10.0±0.3
12.2±0.4
44-lead QFP package (QFP044-P-1010)
•
•
•
•
■ Application
Actuator for CD, motor drive
ICs for CD/CD-ROM Player
AN8819NFB
■ Block Diagram
ICs for CD/CD-ROM Player
AN8819NFB
■ Pin Description
Pin No.
Pin Name
Pin No.
Pin Name
1
2
3
4
5
6
7
8
9
PVCC Supply Pin
23 TR– Driver Output Pin
DED Dead Time Input Pin
24 TR+ Driver Output Pin
OUT DC-DC Converter Output Pin
FB Error Amp. Input Pin
25 FO – Driver Output Pin
26 FO + Driver Output Pin
IN Error Amp. Output Pin
27 PGND Ground Pin
DRGND Ground Pin
28 PGND Ground Pin
SGND Ground Pin
29 SP + Driver Output Pin
SPRO Short-Circuit Protection Input Pin
BSEL Empty Detection Level Changeover Pin
30 SP – Driver Output Pin
31 TV+ Driver Output Pin
10 VSEN Empty Detection Input Pin
11 SVCC Power Pin
32 TV– Driver Output Pin
33 VC Driver Power Voltage Pin
34 TB PWM Circuit Output Pin
35 RESET Reset Output Pin
12 CRIP Capacitor Pin for Ripple Rejection
13 AVDD Ripple Filter Ouput Pin
14 DRVCC Supply Pin
36 MRST Muting Reset Output Pin
37 EMP Empty Detection Output Pin
38 CLK External Synchronization Input Pin
39 START Start Oscillation Start Input Pin
40 POWER Power On/Off Input Pin
41 CT Triangular Wave Oscillation Pin
42 PWMG PWM Loop Gain Adjustment Pin
43 COMPO APC Comparator Output Pin
44 COMPI APC Comparator Input Pin
15 VREF 1/2 VCC Input Pin
16 INFO Driver Input Pin
17 INTR Driver Input Pin
18 LDON Driver ON – OFF Control Pin
19 INSP Driver Input Pin
20 PC Driver ON – OFF Control Pin
21 INTV Driver Input Pin
22 TRVSTOP Driver ON – OFF Control Pin
■ Absolute Maximum Ratings (Ta=25˚C)
Parameter
Symbol
Rating
Unit
V
PVCC
SVCC
DRVCC
V10max.
V33max.
ICC
15
6
Supply Voltage
6
VSEN Pin Maximum Applied Voltage
VC Pin Maximum Applied Voltage
Supply Current
15
9
V
V
mA
mW
˚C
Power Dissipation Note)
PD
880
Operating Ambient Temperature
Storage Temperature
Topr
–25 ~ + 75
–55 ~ + 125
Tstg
˚C
Note) Unit
■ Recommended Operating Range (Ta=25˚C)
Parameter
Symbol
Range
PVCC
SVCC
1.5V ~ 9V
2.7V ~ 5.5V
2.7V ~ 5.5V
Operating Supply Voltage Range
DRVCC
ICs for CD/CD-ROM Player
AN8819NFB
■ Electrical Characteristics (Ta=25˚C±2˚C)
Parameter
Symbol
Condition
min.
2.0
typ.
3.1
max.
4.5
Unit
mA
PVCC = 2.4V, SVCC = DRVCC
= 3.2V, VREF = 1.6V
I11Q
SVCC No Load Supply Current
PVCC1 = 2.4V, SVCC = DRVCC
= 3.2V, VREF = 1.6V
I14Q
I1Q
I1L
2.4
2.6
1.8
1.8
3.0
5.1
2.0
mA
mA
µA
DRVCC No Load Supply Current
PVCC No Load Supply Current
PVCC1 = 2.4V, SVCC = DRVCC
= 3.2V, VREF = 1.6V
PVCC = 9V, SVCC = DRVCC
= 0V, VERF = 0V
PVCC Leak Current
Driver Portion
PVCC = 4V,
SVCC = DRVCC = 3.2V
DRVCC
–1.2
Maximum Drive Voltage
of Pins FO, TR, SP and TV
VDMAX
IDMAX
G+
V
mA
kΩ
kΩ
mV
mV
µA
µA
PVCC = 4V,
SVCC = DRVCC = 3.2V
Maximum Drive Current
500
33
Focus/Tracking/Traverse
Transmission Gain (+)
PVCC = 4V,
SVCC = DRVCC = 3.2V
53
107
50
100
1
43
87
PVCC = 4V,
SVCC = DRVCC = 3.2V
Gsp +
VOFF
VSPOFF
IDZ
67
Spindle Transmission Gain (+)
Focus/Tracking/Traverse
Output Offset Voltage
PVCC = 4V,
SVCC = DRVCC = 3.2V
–50
–100
–1
PVCC = 4V,
SVCC = DRVCC = 3.2V
Spindle Output Offset Voltage
Focus/Tracking/Traverse
Input Conversion Dead Zone
PVCC = 4V,
SVCC = DRVCC = 3.2V
PVCC = 4V,
SVCC = DRVCC = 3.2V
ISpDZ
–2
2
Spindle Input Conversion Dead Zone
DC-DC Converter Portion
PVCC = 2.4V, SVCC = DRVCC
= 3.2V, CT = 390pF/470kΩ,
VIN = 0.8V
PVCC = 2.4V, SVCC = DRVCC
= 3.2V, CT = 390pF/470kΩ,
VIN = 0.8V
CLK Synchronization Output Pulse
Maximum Duty
D2C
D2F
65
74
74
80
83
86
%
%
%
V
V
Self-Running Output Pulse
Maximum Duty
PVCC = 2.4V, SVCC = DRVCC
= 3.2V, CT = 390pF/470kΩ,
Starting Output Pulse Maximum Duty
Self-Running Output Voltage (H)
D2S
35
45
55
VIN = 0.8V
PVCC = 2.4V, SVCC = 3.2V
IOUT = –25mA,
VCT = 0V, VFB = 0.7V
V20H
1.08
0.15
1.5
0.3
1.71
0.4
PVCC = 2.4V, SVCC = DRVCC
= 3.2V, IOUT = 15mA,
VCT = 1V, VFB = 0.5V
V20L
Self-Running Output Voltage (L)
Starting Oscillation Frequency
PVCC = 3.2V, SVCC = 0V
CT = 390pF/470kΩ
F41S
F41F
60
54
83
65
115
76
kHz
kHz
PVCC = 2.4V, SVCC = DRVCC
= 3.2V, CT = 390pF/470kΩ
Self-Running Oscillation Frequency
Ripple Filter Portion
PVCC = 2.4V, SVCC = DRVCC
= 3.2V, Input = 35mVrms/20kHz
Ripple Rejection Ratio
RR13
40
dB
ICs for CD/CD-ROM Player
AN8819NFB
■ Pin Description
Pin No. Symbol
I/O
I
Pin Description
Equivalent Circuit
Supply pin for control circuits
other than of driver, not connected
with DRVCC, PVCC
11
7
SVCC
11
7
Ground pin for control circuits
other than of driver
SGND
DRVCC
DRGND
PVCC
I
I
I
I
Supply pin for control circuit of
driver, not connected with SVCC
PVCC
,
14
6
14
6
Ground pin for control circuit of
driver
Supply pin supplying the current
for output power transistor
1
1
27
28
27
28
Ground pin for output power
transistor
PGND
I
SVCC
2
Setting pin for dead time control
input and soft start
2
DED
50kΩ
25kΩ
PVCC
200Ω
15kΩ
3
OUT
O
Switching output pin
3
ICs for CD/CD-ROM Player
AN8819NFB
■ Pin Description (Cont.)
Pin No. Symbol
I/O
Pin Description
Equivalent Circuit
4
FB
O
Error amp. output pin
SVCC
26.9kΩ
SVCC
13.1kΩ
5
IN
I
Error amp. input pin
5
4
16.4kΩ
8
8
SPRO
I
Short-circuit protection input pin
22kΩ
32kΩ
20kΩ
40
40
POWER
I
Switching output ON/OFF pin
79kΩ
62kΩ
SVCC
13
13
AVDD
O
Supply pin for D/A converter
SVCC
External capacitor pin for ripple
rejection
12
CRIP
12
ICs for CD/CD-ROM Player
AN8819NFB
■ Pin Description (Cont.)
Pin No. Symbol
I/O
Pin Description
Equivalent Circuit
DRVCC
15
15
VREF
I
VREF input pin
40kΩ
80kΩ
16
16
17
19
21
INFO
INTR
INSP
INTV
I
I
I
I
Input pin for Driver FO
Input pin for Driver TR
Input pin for Driver SP
Input pin for Driver TV
DRVCC
or
17
VREF
or
1kΩ
19
or
21
DRVCC
18
Power cut input pin for Drivers
FO, TR.
18
20
22
LDON
PC
I
I
I
1kΩ
or
Driver output at L = GND
20
100kΩ
Power cut input pin for Driver SP.
Driver output at H = GND
DRVCC
22
86kΩ
Power cut input pin for Driver TV.
Driver output at H = GND
TRV
STOP
86kΩ
23
24
25
26
30
29
32
31
33
TR–
TR+
FO –
FO +
SP –
SP +
TV–
TV+
VC
O
O
O
O
O
O
O
O
O
– output pin of Driver TR
+ output pin of Driver TR
– output pin of Driver FO
+ output pin of Driver FO
– output pin of Driver SP
+ output pin of Driver SP
– output pin of Driver TV
+ output pin of Driver TV
Driver supply pin
33
or
or
or
or
or
or
24
29
26
31
23
30
25
32
ICs for CD/CD-ROM Player
AN8819NFB
■ Pin Description (Cont.)
Pin No. Symbol
I/O
Pin Description
Equivalent Circuit
PVCC
Pin switching the dry cell and
charger battery for battery voltage
detection circuit
30kΩ
70kΩ
9
BSEL
I
9
7.8kΩ
10
9.9kΩ
Battery voltage detection input pin
for battery voltage detection circuit
10
VSEN
I
7kΩ
Battery shortage detection output
pin for battery voltage detection
circuit
37
37
EMP
I
40kΩ
35
Reset output pin.
35
RESET
O
Reset voltage = Output voltage ×
90%
PVCC
60kΩ
PVCC
20kΩ
36
Muting reset output pin.
Reset voltage = Output voltage ×
90%
36
MRST
O
PVCC
PVCC
Start pin.
200kΩ
39
START
O
OUT pin starts switching in start
mode
39
100kΩ
ICs for CD/CD-ROM Player
AN8819NFB
■ Pin Description (Cont.)
Pin No. Symbol
I/O
Pin Description
Equivalent Circuit
50kΩ
38
Clock input pin, used to synchro-
nize the triangular wave oscillation
with clock.
20kΩ
38
CLK
I
50kΩ
160kΩ
Triangular wave oscillation pin.
Oscillation frequency determined
by external R and C.
41
CT
O
41
Recommendable values : 470kΩ,
390pF
60kΩ
PVCC
Transistor base pin for controlling
the driver supply voltage PWM
34
34
TB
O
DRVCC
Gain adjustment pin for controlling
the driver supply voltage PWM
42
PWMG
42
43
APC switching comparator output
pin
43
44
COMP0
COMP1
O
SVCC
APC switching comparator input
pin
I
44
1kΩ
ICs for CD/CD-ROM Player
AN8819NFB
■ Characteristic Curve
2,000
PD –Ta
Glass epoxy board
(50mm × 50mm × 0.8mm)
Rthj– a = 70˚C/W
1,800
1,786
1,600
1,400
1,200
1,000
PD =1786mW (25˚C)
880
800
600
400
200
0
Unit
Rthj– a = 142˚C/W
PD = 880mW (25˚C)
0
25
50
75
100
125
150
Ambient Temperature Ta (˚C)
■ Description for use
• Driver Portion
Set the driver gain calculated by the equation shown below, except for SP driver. For SP driver, the gain must be set to the
calculated value + 6dB.
43kΩ
1.0kΩ + R
R : External input resistance
G =
The total channel driver supply is Pin33.
Set the driver supply as necessary, since the output amplitude increases with increase of the supply voltage. However, also
increase the voltage of DRVCC pin (Pin14) at the same time.
As protection functions, VREF detection and heat protection circuits are incorporated.
VREF detector sets the driver output to high impedance, when the voltage applied to VREF is 0.75V or less.
For the heat protective circuit, the set temperature for operation is approx. 150˚C and the release temperature is approx. 120˚C.
FO and TR drivers have the built-in function for making short-circuit between either loading end and GND by LDON (Pin18),
and for SP and TV drivers by PC (Pin20) and TRVSTOP (Pin22).
LDON
PC
: Output GND at L
: Output GND at H
TRVSTOP : Output GND at H
ICs for CD/CD-ROM Player
AN8819NFB
• DC-DC Converter Portion
3.4V regulator can be constructed by using external components. The output voltage can be made variable by using an external
resistance.
The short-circuit protective function stops switching of OUT pin (Pin3), unless the output of error amplifier (Pin4) reaches L
after H, within t = CSPRO × VTH/ISPRO (VTH = 1.1V ISPRO = 30µA). (It is recommended that an electrolytic capacitor of 4.7µF
around should be used for Pin3.)
The soft start function works by attaching a capacitor to Pin2 for GND. t = CDED × R (R = 60kΩ)
Also, MAX duty can be changed by attaching an external resistance to Pin2. The output voltage is determined as follows:
(Example)
Assuming R1 + R2 = 50kΩ
SVCC
1.11V
11
R1 × R3
R1 + R3
R2 × R4
R2 + R4
+
R1
R2
R3
R4
IC Inside
+
–
SVCC = 1.1 ×
R2 × R4
R2 + R4
5
IN
Where
R3 = 26.9kΩ
R4 = 13.1kΩ
4
FB
• Ripple Filter Portion for DA Converter (Ripple Filter of Low Saturation Voltage Type)
Attach a capacitor for noise removal to CRIP pin for GND.
(A capacitor of 22µF around is recommended.) Output current : 10mA (typ.)
• Battery Voltage Detection Circuit
The voltage applied to VSEN pin (Pin10) and the constant voltage are compared for output to EMP pin (Pin37).
There is approx. 50mV of hysteresis from detection to reset to prevent the output chattering.
The detection threshold voltage can be made variable by an external resistance.
The threshold values with no external resistances at VSEN pin (Pin10) are as follows:
Detection : VSEN = 2.2V (typ.) BSEL (Pin9) = L
Reset : VSEN = 2.25V (typ.) BSEL (Pin9) = L
Detection : VSEN = 1.8V (typ.) BSEL (Pin9) = HiZ
Reset : VSEN = 1.85V (typ.) BSEL (Pin9) = HiZ
Use the following equation as reference to determine the detection threshold voltage:
R1
Assuming that the voltage of VSEN (Pin10) at battery
VSEN
’
VSEN
shortage detection is VSEN
’
10
R1 + R2 + R3
VSEN’ =
× 1.25
R3
R2
R3
+
–
Where
R1 : External Resistance
R2 : 8.0kΩ
R3 : 16.5kΩ (BSEL = HiZ)
R3 : 10.5kΩ (BSEL = L)
1.25V
IC Inside
37
EMP
• RESET and MRST Portions
RESET (Pin35) is changed from L to H, and MRST pin is changed from H to L, with approx. 90% of the output voltage by a DC-
DC converter.
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