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PDF SA5901 Data sheet ( Hoja de datos )

Número de pieza SA5901
Descripción 4-CHANNEL MOTOR DRIVER
Fabricantes Silan Microelectronics 
Logotipo Silan Microelectronics Logotipo



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SA5901
4-CHANNEL MOTOR DRIVER FOR PORTABLE CD PLAYER
DESCRIPTION
SA5901 is suitable for portable CD player with 4-ch H bridge drivers
and DC/DC converter control circuit. Because of the small package QFP-
44, it is most suitable for small equipment.
FEATURES
QFP44-10 x10-0.8
Four channels of H-bridge drivers are contained.
DC/DC converter control circuit is contained.
Reset circuit
Reduced voltage detection circuit.
LQFP44-10 x10-0.8
Battery charging circuit
General purpose operational amplifier is contained
Low power consumption
ORDERING INFORMATION
Thermal shutdown circuit
QFP-44 package
<H-bridge driver>
Load drive voltage can be processed by PWM control through an
Device
Package
SA5901A QFP44-10 X 10-0.8
SA5901L LQFP44-10 X 10-0.8
external component.
<Battery charging circuit>
Excellent gain can be obtained by a voltage feedback circuit.
Mute function is disabled for ch1, ch2 and ch3/ch4 respectively.
<DC/DC converter control circuit>
Constant current battery
charging system allows varying
current value through
Starter and power off function
Soft-start function and short-circuit protection function
Self-advancing oscillation and clock synchronization are available.
<Reset circuit>
Reset voltage is interlocked with the set voltage of DC/DC converter.
Inversion output pin for reset output is available.
<Reduced voltage detection circuit>
Battery charger and dry battery allow to switch “Empty” detection
resistance.
It is separated from any other
blocks and it can be operated
independently.
A charging power transistor is
contained.
Independent thermal shutdown
circuit is contained.
level.
www.DataSheet4U.com
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.3 2006.02.27
Page 1 of 24

1 page




SA5901 pdf
SA5901
(Continued)
Characteristics
Symbol
Test conditions
Min. Typ. Max. Unit
Test
circuit No
SPRT pin current 1 E0=H
ISPR1 EI=0.7V
Test
6 10 16 µA
32
circuit 1
SPRT pin current 2 OFF=L
ISPR2 EI=1.3V, OFF=0V
Test
12 20 32 µA
33
circuit 1
SPRT pin current 3 (over-
ISPR3 EI=1.3V, BATT=9.5V
voltage)
SPRT pin impedance
RSPR
SPRT pin threshold voltage
VSPTH EI=0.7V, CT=0V
Over-voltage protection detect
Transistor driving section
VHVPR BSEN pin voltage
Test
12 20 32 µA
34
circuit 1
Test
175 220 265 k
35
circuit 1
Test
1.10 1.20 1.30 V
36
circuit 1
Test
8.0 8.4 9.0 V
37
circuit 1
SW pin output voltage 1H
BATT=CT=1.5V
VSW1H VSYS1=VSYS2=0V
IO=2mA, at starter
Test
0.78 0.98 1.13 V
38
circuit 1
SW pin output voltage 2H
CT=0V, IO=-10mA, EI=0.7V,
VSW2H
1.0 1.50 --
SPRT=0V
Test
V 39
circuit 1
SW pin output voltage 2L
VSW2L CT=2V, IO=10mA
Test
-- 0.3 0.45 V
40
circuit 1
SW pin oscillating frequency 1
fSW1
CT=470pF,
VSYS1=VSYS2=0V,
at starter
Test
65 80 95 KHz
41
circuit 3
SW pin oscillating frequency 2 fSW2 CT=470pF, CLK=0V
Test
60 70 82 KHz
42
circuit 3
SW pin oscillating frequency 3 fSW3 CT=470pF
SW pin minimum pulse width
CT=470pF,
TSWMIN
sweep
Test
-- 88.2 -- KHz
43
circuit 3
E0=0.50.7V
Test
0.01 -- 0.6 Usec
44
circuit 3
Pulse duty at start
CT=470pF,
DSW1
VSYS1=VSYS2=0V
Test
40 50 60 %
45
circuit 3
Max. pulse duty at seld-runing
EI=0.7V,
DSW2
CLK=0V
CT=470pF,
Test
70 80 90 %
46
circuit 3
Max. pulse duty at CLK
DSW3 EI=0.7V, CT=470pF
synchronization
Test
65 75 85 %
47
circuit 3
Dead time section
www.DataDShEeAeDt4Upi.ncoimmpedance
RDEAD
Test
52 65 78 K
48
circuit 1
DEAD pin output voltage
VDEAD
Test
0.78 0.88 0.98 V
49
circuit 1
(To be continued)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.3 2006.02.27
Page 5 of 24

5 Page





SA5901 arduino
VSYS1= 1.20
x
R1R3
R1 +R3
+
R2 R4
R2 +R4
R2 R4
(V)
R2 +R4
SA5901
(Short-circuit protection function)
When the output (6-pin) of error amplifier is “H”, if the voltage of SPRT pin (8-pin) has reached 1.2V (typ.) upon
charging the pin, switching of SW pin (5-pin) is disabled. Time to disable switching depends on a capacitor of the
SPRT pin (8-pin) and it can be calculated by the under-mentioned expression:
t
=
CSPRT
x
VTH
ISPRT
(sec)
(VTH = 1.20V, ISPRT = 10 A)
(Soft-start function)
The soft-start is functioned by putting a capacitor between DEAD pin (4-pin) and GND. MAX duty can be
changed by attaching resistance to 4-pin.
t=CDEAD X R (sec) (R=65k)
(Power-off operation)
SPRT pin (8-pin) is charged by setting OFF pin (40-pin) to “L”. Then, switching of SW pin (5-pin) is terminated
when the voltage of the SPRT pin (8-pin) has reached 1.2V (typ.). time to disable switching depends on a
capacitor of the SPRT pin (8-pin) and it can be calculated by the under-mentioned expression:
t=CSPRT x
VTH
IOFF
(sec)
(VTH = 1.20V,IOFF = 20uA)
(Over-voltage protection operation)
When the voltage impressed to BSEN pin (1-pin) has been 8.4V (typ.), SPRT pin (8-pin) is charged. Then,
switching of SW pin (5-pin) is terminated when the voltage of the SPRT pin (8-pin) has reached 1.2V (typ.). time
to disable switching depends on a capacitor of the SPRT pin (8-pin) and it can be calculated by the under-
mentioned expression:
t=CSPRT x
VTH
IHV
(sec)
(VTH = 1.20V,IHV = 20uA)
“Empty” detector unit
When the voltage impressed to BSEN pin (1-pin) has been the detecting voltage or less, EMP pin (35-pin) varies
from “H”to “L”(open collector output). Hysteresis of 50mV (typ.) set to the detecting voltage to prevent the output
chattering. The detecting voltage varies depending on SEL pin (42-pin) as follows:
www.DataSheet4U.com
SEL pin
L
High-2
Detect voltage
2.2V (Typ.)
1.8V (Typ.)
Return voltage
2.25V (Typ.)
1.85V (Typ.)
Reset circuit
Upon 90% (typ.) of DC/DC converter output voltage, RESET pin (3-pin) varies from “L”to “H”and AMUTE pin
(34-pin) changes from “H”to “L”. Hysteresis of 50mV(typ.) set to the reset voltage to prevent the output chattering.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.3 2006.02.27
Page 11 of 24

11 Page







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