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PDF AT5802 Data sheet ( Hoja de datos )
| Número de pieza | AT5802 | |
| Descripción | Preliminary 4-Channel driver + Power Controller | |
| Fabricantes | Aimtron Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AT5802 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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Features
˙4 channels of Power-Mos H-bridge drivers.
˙Built-in DC/DC converter control circuit.
˙Built-in reset circuit.
˙Built-in VG booster circuit.
˙Built-in voltage down regulator circuit.
˙Built-in On/OFF function
˙Low power consumption.
˙Direct PWM drive system.
˙QFP44 package.
Block Diagram
AT5802
Preliminary
4-Channel driver + Power Controller
Description
The AT5802 is a 4-channel driver and power
controller for portable CD players on a single
chip. The driver block power supply uses the
on-chip switching regulator, making this
component an ideal choice for low-power sets.
Applications
Disc-man
Portable compact disc players (CDP)
Portable Mini disc player (MD)
Other portable compact disc media
33 32 31 30 29 28 27 26 25 24 23
OUT1+ 34
SPRT 35
PRE-DRIVER
PRE-DRIVER
PRE-DRIVER
PRE-DRIVER
22 FIL4
21 FIL3
SOFT 36
20 FIL2
CT 37
19 FIL1
DC_IN 38
REGB 39
REGO 40
REGULATOR
SWITCH
OUTPUT
VSYS
DETECT
18 VREF
17 IN4
16 IN3
GND 41
15 IN2
PGND3 42
LG 43
VG 44
PRE-DRIVER
POWER
SUPPLY
CONVERTER
DC/DC
CONVERTER
TRIANG WAVE
RESET
14 IN1
13 RESET
POWER
OFF
STARTER
MUTE1
MUTE34
12 MUTE1
1 2 3 4 5 6 7 8 9 10 11
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: [email protected]
1
1 page  
AT5802
Preliminary
4-Channel driver + Power Controller
Parameter
Symbol Min. Typ. Max. Unit
Conditions
Mute 1 ON
threshold voltage
Mute 1 OFF
threshold voltage
Mute 34 ON
threshold voltage
Mute 34 OFF
threshold voltage
Control pin threshold
VMON1 1.5
-
-V
VMOFF1
-
- 0.5 V
VMON34
-
- 0.5 V
VMOFF3
4
1.5
-
-V
Up / down voltage converter section
EI pin threshold voltage
EO pin output voltage H
EO pin output voltage L
VEITH
VEOTH
VEOL
0.85 0.90 0.95 V
1.1 1.3
-
V
- - 0.4 V
Short-circuit protection
SPRT pin voltage(normal) VSPRTN
SPRT pin current 1,EO=H ISPRT1
SPRT pin current 2,
OFF mode
ISPRT2
-
3.8
7.5
- 0.2 V
5.8 8.8 μA
11.5 17.5 μA
SPRT pin impedance
RSPRT 210 300 390 KΩ
SPRT pin
threshold voltage
VSPRTTH
0.4
0.5
0.6
V
Soft start section
SOFT pin output voltage
SOFT pin current
VSOFT
ISOFT
1.22 1.67 2.12
369
Interface section
V
μA
OFF pin ON
threshold voltage
VOFFTH1
-
-
VSYS
-1.5
V
OFF pin OFF
threshold voltage
VOFFTH2
VSYS
-0.6
-
-V
OFF pin bias current
IOFF
START pin ON
threshold voltage
VSTATH1
30
-
60 90 μA
-
REGO
-1.0
V
START pin OFF
threshold voltage
VSTATH2
REGO
-0.3
-
-V
START pin bias current ISTART -
30 34 μA
CLK pin
VCLKTH
threshold voltage H H
1.5
-
-V
CLK pin
threshold voltage L
VCLKTHL
-
- 0.5 V
CLK pin bias current
ICLK
11
16
21 μA
Starter circuit section
LG pin oscillating
frequency
fLG 75 100 125 KHz
LG pin maximum pulse
duty
tLGMAX
84
87
90
﹪
LG pin output voltage L VLGL -
0.1 0.2
VG pin starter detect
VVGSTT 3.7 4.5 5.3
H
V
V
IEO=100μA
IEO=-60μA
SOFT=0V
OFF=0V
VSYS=0V,START=0V
CT=470PF, fCLK=88.2KHz
CT=470PF, fCLK=88.2KHz
CLK=2.5V
VG=LG=5V
VG=LG=5V
VG=LG=5V
VG=3.5V→5.5V sweep
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: [email protected]
5
5 Page 
AT5802
Preliminary
4-Channel driver + Power Controller
7. Thermal shut down
When the chip temperature has been 150℃ (Typ.), the output current is muted. And when the
chip temperature has dropped to 130℃ (Typ.), the driver circuit starts up.
Note in use
1. Between power supplies, attach a by-pass capacitor (approx. 0.1μF) at the root of this IC.
2. In principle, do not apply voltage below sub-potential of IC to terminal. Examine in consideration of
operation margin, when each driver output falls below sub-voltage of IC (GND) due to counter-
electromotive-force of choke coil, etc.
3. Output pin is to avoid short-circuiting with PVCC, GND, and other output pins. And, be fully careful
in the direction of an integrated circuit on the substrate.
4. When use AC adapter, if apply beyond 7V to DC_IN pin, connect Z-Di with DC_IN pin. So keep
voltage of DC_IN being below 7V. To protect IC, once the voltage to be applied on the DC_IN
terminal exceeded 7.5V (Typ.), SPRT terminal can be charged.( ISPRT=11.5μA, see short circuit
protection)
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: [email protected]
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet AT5802.PDF ] | |
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