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PDF AT5801 Data sheet ( Hoja de datos )
| Número de pieza | AT5801 | |
| Descripción | 4-Channel Driver + Power Controller | |
| Fabricantes | Aimtron | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AT5801 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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Features
˙4 channels of H-bridge drivers.
˙Built-in DC/DC converter control circuit.
˙Built-in reset circuit.
˙Built-in reduced voltage detection circuit.
˙Built-in battery charging circuit.
˙Built-in general purpose operation amplifier.
˙Built-in thermal shutdown circuit.
˙Low power consumption.
˙QFP44 package.
AT5801
Preliminary
4-Channel driver + Power Controller
Description
The AT5801 is a 4-channel driver and power
controller that includes the reset, battery charge
and reduced voltage detection circuits required
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
Portable compact disk players (CDP)
Portable Mini disk player (MD)
Disk-man
Other portable compact disk media
Block Diagram
10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C.
Tel: 886-3-575-3058
Fax: 886-3-575-3015
1
Email: [email protected]
http://www.aimtron.com.tw
01/08/05
1 page  
AT5801
Preliminary
4-Channel driver + Power Controller
Input offset voltage
VOI
Output
(CH1、3、4) VOO134
offset voltage
(CH2) VOO2
Dead zone
VDB
BRAKE1 ON
threshold voltage
VBRON
－8
－50
－130
－10
2.0
BRAKE1 OFF
threshold voltage
VBROFF
－
MUTE2 ON
threshold voltage
VM2ON
2.0
MUTE2 OFF
threshold voltage
VM2OFF
－
MUTE34 ON
threshold voltage
VM34ON
－
MUTE2 OFF
threshold voltage
VM34OFF
2.0
VREF ON
threshold voltage
VrefON
1.2
VREF OFF
threshold voltage
VrefOFF
－
BRAKE1
brake current
IBRAKE1
4
PWM power supply driving section
PSW sink current
IPSW 10
HVCC level shift voltage VSHIF 0.35
HVCC leak current
IHLK
－
PWM amplifier
transfer gain
GPWM 1/60
DC/DC converter section
(Error amplifier section)
VSYS1 pin
threshold voltage
VSITH
EO pin output voltage H VEOH
EO pin output voltage L VEOL
(Short-circuit protection)
SPRT pin voltage(normal)
SPRT pin current 1 EO=H
SPRT pin current 2 EO=L
SPRT pin current 3
(over-voltage)
VSPR
ISPR1
ISPR2
ISPR3
SPRT pin impedance
RSPR
SPRT pin
threshold voltage
VSPTH
Over-voltage
protection detect
VHVPR
(Transistor driving section)
SW pin
output voltage 1H
VSW1H
3.05
1.4
－
－
6
12
12
175
1.10
8.0
0.78
0
0
0
0
－
－
－
－
－
－
－
－
7
13
0.45
0
1/50
3.20
1.6
－
0
10
20
20
220
1.20
8.4
0.98
8 mV
50
130
mV
mV
Vref=IN=1.6V
10 mV
－ V IN1=1.8V
0.8 V IN1=1.8V
－ V IN2=1.8V
0.8 V IN2=1.8V
0.8 V IN3= IN4=1.8V
－ V IN3= IN4=1.8V
－ V IN1=IN2=IN3=IN4=1.8V
0.8 V IN1= IN2=IN3=IN4=1.8V
10
mA
BRAKE1 pin
The current
Difference between “H” and “L”
17 mA IN1=2.1V
0.55 V IN1=1.8V,HVCC－OUT1F
5
μA
HVCC=9V
VSYS1= VSYS2=BATT=0V
1/40 1/kΩ IN1=1.8V, HVCC=1.2~1.4V
3.35 V
－ V EI=0.7V, IO=－100μA
0.3 V EI=1.3V, IO=100μA
0.1 V EI=1.3V
16 μA EI=0.7V
32 μA EI=1.3V, OFF=0V
32 μA EI=1.3V, BATT=9.5V
265 kΩ
1.30 V EI=0.7V, CT=0V
9.0 V BSEN pin voltage
1.13
V
BATT=CT=1.5V, IO=－2mA,
VSYS1= VSYS2=0V, at start
10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C.
Tel: 886-3-575-3058
Fax: 886-3-575-3015
5
Email: [email protected]
http://www.aimtron.com.tw
01/08/05
5 Page 
AT5801
Preliminary
4-Channel driver + Power Controller
〈Reset circuit〉
Upon 90﹪of DC/DC converter output voltage,
RESET terminal varies from “L” to “H” and
AMUTE terminal changes from “H” to “L”.
Hysteresis of 50mV(typ.) set to the reset
voltage to prevent the output chattering.
〈Charging circuit〉
The power supply of the charging unit is
CHGVCC terminal and it is independent of
any other circuits. Charging current is set by
the resistance between RCHG terminal and
GND. The charging current takes constant
current through SEL terminal.
This circuit has a private thermal shutdown
circuit. When the chip temperature has been
150℃, the charging current is cut. When the
chip temperature has dropped to 120℃, the
charging current begins to flow.
10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C.
Tel: 886-3-575-3058
Fax: 886-3-575-3015
11
Email: [email protected]
http://www.aimtron.com.tw
01/08/05
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet AT5801.PDF ] | |
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