Datasheet

UNISONIC TECHNOLOGIES CO.,
UA1538
LINEAR INTEGRATED CIRCUIT
4-CH MOTOR DRIVER FOR
PORTABLE CD PLAYERS
„
DESCRIPTION
The UTC UA1538 contains a 4ch H bridge driver and
DC-DC converter control circuit on one chip, and was
developed for use in portable CD players.
„
FEATURES
* Built-in 4ch H bridge driver and PWM control of load drive
voltage is made possible by external components.
* DC-DC converter control circuit on chip.
* With reset output inversion output pin.
* Empty detection level can be switched between rechargeable
battery and dry battery.
* Constant current charging; current value can be varied using
external resistor.
* Built-in power transistor for charging.
* Built-in independent thermal shutdown circuit.
„
ORDERING INFORMATION
Lead Free
UA1538L-QM1-Y
Ordering Number
Halogen Free
UA1538G-QM1-Y
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co.,
Package
Packing
QFP-44
Tray
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LINEAR INTEGRATED CIRCUIT
PIN CONFIGURATION
„
RCHG OUT1R OUT1F OUT2R OUT2F
32
33
31
29
30
POW
GND
28
OUT3F OUT3R OUT4F OUT4R BRAKE1
26
27
25
24
23
AMUTE 34
22
IN1
EMP 35
21 MUTE2
HVCC 36
20 IN2
PSW 37
19
MUTE34
CLK 38
18
IN4
17
IN3
UTC UA1538
START 39
OFF 40
16 VREF
CHGVCC 41
15 VSYS2
SEL 42
14 OP+
PREGND 43
13
PWMFIL 44
12 VSYS1
1
2
BSEN
BATT
3
4
RESET DEAD
5
6
7
8
9
10
11
SW
EO
EI
SPRT
CT
N.C.
OP-
OPOUT
PIN DESCRIPTION
„
PIN NO. PIN NAME INPUT/OUTPUT
FUNCTION
1
BSEN
Input
Battery Voltage Monitor
2
BATT
Input
Battery Power Supply Input
3
RESET
Output
Reset Detect Output
4
DEAD
Input
DEAD Time Setting
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INTERMAL EQUIVALENT CIRCUIT
Power Supply
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LINEAR INTEGRATED CIRCUIT
PIN DESCRIPTION(Cont.)
„
PIN NO. PIN NAME INPUT/OUTPUT
FUNCTION
INTERMAL EQUIVALENT CIRCUIT
BATT
5
SW
Output
Transistor Drive For Voltage
Multiplier
6
EO
Output
Error Amplifier Output
5
150Ω
6kΩ
VSYS1
35kΩ
7
EI
Input
Error Amplifier Input
7
21.6kΩ
8
SPRT
Output
Short Circuit Protection Setting
VSYS1
BATT
2kΩ
9
9
CT
Output
Triangular-Wave Output
420kΩ
10kΩ
10
N.C.
11
14
OPOP+
Input
Op Amp Negative Input
Op Amp Positive Input
12
VSYS1
Input
Control Circuit Power Supply
Input
13
OPOUT
Output
15
VSYS2
Input
Driver Pre-step Power Supply
16
VREF
Input
Reference Voltage Input
Op Amp Output
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Control Circuit Power Supply
Pre-Drive Power Supply
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LINEAR INTEGRATED CIRCUIT
PIN DESCRIPTION(Cont.)
PIN NO. PIN NAME INPUT/OUTPUT
FUNCTION
Input
Ch3 Control Signal Input
Ch4 Control Signal Input
Ch2 Control Signal Input
Ch1 Control Signal Input
Input
Ch3 and 4 Mute
Ch2 Mute
Ch1 Brake
17
18
20
22
IN3
IN4
IN2
IN1
19
21
23
MUTE34
MUTE2
BRAKE1
24
25
26
27
29
30
31
32
OUT4R
OUT4F
OUT3R
OUT3F
OUT2F
OUT2R
OUT1F
OUT1R
28
POWGND
36
HVCC
Input
Ch4 Negative Output
Ch4 Positive Output
Ch3 Negative Output
Ch3 Positive Output
Ch2 Positive Output
Ch2 Negative Output
Ch1 Positive Output
Ch1 Negative Output
Power Block Power Supply
Ground
H-Bridge Power Supply Input
33
RCHG
Input
Charge Current Setting
34
AMUTE
Output
Reset Invert Output
35
EMP
Output
Empty Detect Output
Output
INTERMAL EQUIVALENT CIRCUIT
19
21
68kΩ
68kΩ
23
BATT
37
37
PSW
Output
PWM Transistor Drive
50Ω
38
CLK
Input
External Clock Synchronizing
Input
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„
LINEAR INTEGRATED CIRCUIT
PIN DESCRIPTION(Cont.)
PIN NO. PIN NAME INPUT/OUTPUT
FUNCTION
39
START
Input
Voltage Multiplier DC-DC
Converter Start
40
OFF
Input
Voltage Multiplier DC-DC
Converter OFF
41
CHGVCC
Input
Charging Circuit Power
Supply Input
INTERMAL EQUIVALENT CIRCUIT
Charging Circuit Power Supply
BATT
200kΩ
130kΩ
42
SEL
43
PREGND
Input/Output
Empty Detect Level Switch
Pre Section Power Supply
Ground
15kΩ
42
Pre Section Power Supply Ground
VSYS1
2kΩ
44
PWMFIL
Input
PWM Phase Compensation
44
2kΩ
*The positive and negative outputs are the polarity with respect to the input
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„
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
RCHG
OUTIR
OUT1F
OUT2R
33
32
31
30
OUT2F POWGND OUT3F OUT3R
29
28
27
OUT4R BRAKE1
OUT4F
26
25
24
23
BRAKE1
22 IN1
MUTE2
AMUTE 34
EMP 35
BTL
BTL
BTL
TSD
PSW 37
MAXIMUM
DETECTION
CLK 38
CLK
+ -
POWER
OFF
STARTER
START 39
OFF 40
20 IN2
V
/
I
+
V
/
I
+
V
/
I
+
V
/
I
+
MUTE34
BTL
HVCC 36
21 MUTE2
19 MUTE34
18 IN4
17 IN3
16 VREF
OVER-VOLTAGE
TSD
15
TRIANGLE WAVE
CONTROL CIRCUIT
POWER SUPPLY
PRE-DRIVER POWER SUPPLY
PREGND
-
+
+
-
43
+ -
+ + -
14 OP+
VSYS1
+ -
1
2
3
4
5
6
7
8
9
10
11
BSEN
BATT
RESET
DEAD
SW
EO
EI
SPRT
CT
N.C.
OP-
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13 OPOUT
12
POWER UNIT
POWER SUPPLY
PWMFIL 44
VSYS2
-
SEL 42
+
CHGVCC 41
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LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (TA=25℃)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage (Note 2)
VCC
13.5
V
Driver Output Current
IO
500
mA
Power Dissipation
PD
625
mW
℃
Operating Temperature
TOPR
-20 ~ +85
℃
Storage Temperature
TSTG
-40 ~ +150
Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. VCC shows input voltage of VSYS1,VSYS2, HVCC, BATT and CHGVCC.
„
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Control Circuit Power Supply Voltage
Pre-Driver Circuit Power Supply Voltage
H-Bridge Power Supply Voltage
Power Supply Voltage
Charging Circuit Power Supply Voltage
Operating Temperature
„
SYMBOL
VSYS1
VSYS2
HVCC
BATT
CHGVCC
TA
MIN
2.7
2.7
1.5
3.0
-10
TYP
3.2
3.2
PWM
2.4
4.5
25
MAX
5.5
5.5
BATT
8.0
8.0
70
UNIT
V
V
V
V
V
℃
ELECTRICAL CHARACTERISTICS
(TA=25℃, BATT=2.4V, VSYS1=VSYS2=3.2V, VREF=1.6V, CHGVCC=0V, fCLK=88.2kHz, unless otherwise specified.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
COMMON SECTION
BATT Stand-by Current
IST
BATT=9.0V, VSYS1=VSYS2=VREF=0V
0
3
μA
BATT Supply Current (No load)
IBAT
HVCC=0.45V, MUTE34=3.2V
2.5
4.0
mA
VSYS1 Supply Current (No load)
ISYS1
HVCC=0.45V, MUTE34=3.2V, EI=0V
4.5
mA
VSYS2 Supply Current (No load)
ISYS2
HVCC=0.45V, MUTE34=3.2V
4.1
5.5
mA
CHGVCC Supply Current (No load)
ICGVCC CHGVCC=4.5V, ROUT=OPEN
0.65 2.00
mA
H-BRIDGE DRIVER PART
Voltage Gain ch1,ch3.ch4
GVC134
12
14
16
dB
Voltage Gain ch2
GVC2
21.5 23.5 24.5
dB
Gain Error By Polarity
⊿GVC
-2
0
2
dB
Input pin resistance ch1,ch3,ch4
RIN134 IN=1.7V and 1.8V
9
11
13
kΩ
Input pin resistance ch2
RIN2
IN=1.7V and 1.8V
6
7.5
9
kΩ
Maximum Output Voltage
VOUT
RL=8Ω,HVCC=BATT=4.0V IN=0-3.2V
1.9
2.1
V
Saturation Voltage (Lower)
VSATL IO=-300mA, IN=0 and 3.2V
240
400
mV
Saturation Voltage (Upper)
VSATU IO=-300mA, IN=0 and 3.2V
240
400
mV
Input Offset Voltage
VOI
-8
0
8
mV
Output Offset Voltage ch1,ch3,ch4
VOO134 VREF=IN=1.6V
-50
0
50
mV
Output Offset Voltage ch2
VOO2
VREF=IN=1.6V
-130
0
130
mV
Dead Zone
VDB
-10
0
10
mV
BRAKE1ON Threshold Voltage
VBRON IN1=1.8V
2.0
V
BRAKE1OFF Threshold Voltage
VBROFF IN1=1.8V
0.8
V
MUTE2 ON Threshold Voltage
VM2ON IN2=1.8V
2.0
V
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LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
H-BRIDGE DRIVER PART
MUTE2 OFF Threshold Voltage
MUTE34 ON Threshold Voltage
MUTE34 OFF Threshold Voltage
VREF ON Threshold Voltage
VREF OFF Threshold Voltage
BRAKE1 Brake Current
PWM POWER SUPPLY DRIVING
PSW Sink Current
HVCC Level Shift Voltage
HVCC Leak Current
PWM Amp Transfer Gain
DC-DC CONVERTER
Error Amp
VSYS1 Threshold Voltage
EO Pin Output Voltage "H"
EO Pin Output Voltage "L"
SHORT CIRCUIT PROTECTION
SPRT Pin Voltage
EO=H SPRT Pin Current1
OFF=L SPRT Pin Current2
SPRT Pin Current3 Over-Voltage
SPRT Pin Impedance
SPRT Pin Threshold Voltage
Over-Voltage Protection Detect
TRANSISTOR DRIVING
SYMBOL
VM2OFF
VM34ON
VM34OFF
VREFON
VREFOFF
IBRAKE1
IN1=2.1V
IN1=1.8V, HVCC-OUT1F
HVcc=9.0V, VSYS1=VSYS2=BATT=0V
IN1=1.8V, HVCC=1.2 ~ 1.4V
VS1TH
VEOH
VEOL
EI=0.7V, Io=-100µA
EI=1.3V, Io=100µA
VSPR
ISPR1
ISPR2
ISPR3
RSPR
VSPTH
VHVPR
VSW1H
SW Pin Output Voltage2 "H"
SW Pin Output Voltage2 "L"
VSW2H
VSW2L
SW Pin Oscillating Frequency2
SW Pin Oscillating Frequency3
SW Pin Minimum Pulse Width
Pulse Duty Start
Max. Pulse Duty At Self-Running
Max. Pulse Duty At CLK
Synchronization
IN2=1.8V
IN3=IN4=1.8V
IN3=IN4=1.8V
IN1=IN2=IN3=IN4=1.8V
IN1=IN2=IN3=IN4=1.8V
Current difference between BRAKE
pin "H" time and "L" time.
IPSW
VSHIF
IHLK
GPWM
SW Pin Output Voltage1 "H"
SW Pin Oscillating Frequency1
TEST CONDITIONS
fSW1
fSW2
fSW3
TSWMIN
DSW1
DSW2
DSW3
EI=1.3V
EI=0.7V
EI=1.3V, OFF=0V
EI=1.3V, BATT=9.5V
EI=0.7V, CT=0V
BSEN Pin Voltage
BATT=CT=1.5V, VSYS1=VSYS2=0V,
IO=-2mA Starting Time
CT=0V, Io=-10mA,EI=0.7V, SPRT=0V
CT=2.0V, Io=10mA
CT=470pF, VSYS1=VSYS2=0V
Starting Time
CT=470pF, CLK=0V
CT=470pF
CT=470pF, EO=0.5V→0.7V Sweep
CT=470pF,VSYS1=VSYS2=0V
CT=470pF, EI=0.7V, CLK=0V
CT=470pF, EI=0.7V
UNISONIC TECHNOLOGIES CO., LTD
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MIN
TYP
MAX UNIT
0.8
0.8
0.8
V
V
V
V
V
2.0
1.2
4
7
10
mA
10
0.35
1/60
13
0.45
0
1/50
17
0.55
5
1/40
mA
V
μA
1/kΩ
3.05
1.4
3.20
1.6
3.35
0.3
V
V
V
0
10
20
20
220
1.20
0.1
16
32
32
265
1.30
9.0
V
μA
μA
μA
kΩ
V
V
0.78
0.98
1.13
V
1.00
1.50
0.30
0.45
V
V
65
80
95
kHz
60
70
88.2
82
6
12
12
175
1.10
7.5
0.01
40
70
50
80
0.60
60
90
kHz
kHz
μs
%
%
65
75
85
%
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LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
INTERFACE
OFF Pin Threshold Voltage
OFF Pin Bias Current
SYMBOL
TEST CONDITIONS
VOFTH
EI=1.3V
IOFF
OFF=0V
START Pin ON Threshold Voltage
VSTATH1
VSYS1=VSYS2=0V, CT=2.0V
START Pin OFF Threshold Voltage
VSTATH2
VSYS1=VSYS2=0V, CT=2.0V
START Pin Bias Current
CLK Pin Threshold Voltage "H"
CLK Pin Threshold Voltage "L"
CLK Pin Bias Current
DEAD TIME
DEAD Pin Impedance
DEAD Pin Output Voltage
STARTER CIRCUIT
Starter Switching Voltage
Starter Switching Hysteresis Width
Discharge Release
EMPTY DETECTION
EMP Detection Voltage 1
EMP Detection Voltage 2
EMP Detection Hysteresis Voltage 1
EMP Detection Hysteresis Voltage 2
EMP Pin Output Voltage
EMP Pin Output Leak Current
BSEN Pin Input Resistance
BSEN Pin Leak Current
SEL Pin Detection Voltage
SEL Pin Detection Current
RESET CIRCUIT
VSYS1 RESET Threshold Voltage
Ratio
RESET Detection Hysteresis Width
RESET Pin Output Voltage
RESET Pin PULL UP Resistance
ISTART
START=0V
VCLKTHH
VCLKTHL
ICLK
CLK=3.2V
RDEAD
VDEAD
75
BATT0.3
10
13
2.0
TYP
95
MAX UNIT
VSYS12.0
115
BATT1.0
V
μA
V
V
20
16
30
19
μA
0.8
10
V
V
μA
52
0.78
65
0.88
78
0.98
kΩ
V
VSTNM
VSNHS
VDIS
VSYS1=VSYS2=0→3.2V, START=0V
START=0V
2.3
130
1.63
2.5
200
1.83
2.7
300
2.03
V
mV
V
VEMPT1
VEMPT2
VEMHS1
VEMHS2
VEMP
IEMPL
RBSEN
IBSENL
VSELTH
ISELT
VSEL=0V
ISEL=- 2µA
VSEL=0V
ISEL=- 2µA
IO=1mA, BSEN=1V
BSEN=2.4V
VSEL=0V
VSYS1=VSYS2=0V, BSEN=4.5V
VSELTH=BATT-SEL BSEN=2.0V
2.1
1.7
25
25
2.2
1.8
50
50
17
23
2.3
1.9
100
100
0.5
1.0
27
1.0
V
V
mV
mV
V
μA
kΩ
V
V
μA
HSRT
VRSTHS
VRST
RRST
AMUTE Pin Output Voltage 1
VAMT1
AMUTE Pin Output Voltage 2
VAMT2
AMUTE Pin Pull Down Resistance
RAMT
Comparison with error amplifier
threshold voltage
1.5
-2
85
90
95
%
25
50
100
0.5
108
mV
V
kΩ
BATT
V
BATT
V
113
kΩ
Io=1mA, VSYS1=VSYS2=2.8V
72
BATT
Io=-1mA, VSYS1=VSYS2=2.8V
-0.4
BATT
Io=-1mA,START=0V, VSYS1=VSYS2=0V
-0.4
77
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MIN
90
95
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LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
OP AMP
Input Bias Current
Input Offset Voltage
High Level Output Voltage
Low level Output Voltage
Output Drive Current (Source)
Output Drive Current (Sink)
Open Loop Voltage Gain
Slew Rate
BATTERY CHARGING CIRCUIT
RCHG Pin Bias Voltage
RCHG Pin Output Resistance
SYMBOL
IBIAS
VOIOP
VOHOP
VOLOP
ISOU
ISIN
GVO
SR
VRCHG
RRCHG
SEL Pin Leak Current 1
ISELLK1
SEL Pin Leak Current 2
ISELLK2
SEL Pin Saturation Voltage
VSELCG
TEST CONDITIONS
TYP
OP+=1.6V
RL=OPEN
RL=OPEN
50Ω GND
50Ω VSYS1
VIN=-75dBV, f=1kHz
-5.5
2.8
0.4
CHGVCC=4.5V, RCHG=1.8kΩ.
0.71
CHGVCC=4.5V, RCHG=0.5 and 0.6V
0.75
CHGVCC=4.5V, RCHG=OPEN,
BATT=4.5V
CHGVCC=0.6V, RCHG=1.8kΩ,
BATT=4.5V
CHGVCC=4.5V, IO=300mA, RCHG=0Ω
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MIN
0
-6.5
0.7
70
0.5
0.81
0.95
0.45
MAX UNIT
300
5.5
0.2
-3.0
nA
mV
V
V
mA
mA
dB
V/μs
0.91
1.20
V
kΩ
1.0
μA
1.0
μA
1.00
V
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LINEAR INTEGRATED CIRCUIT
MEASURING CIRCUIT
„
V
a
1.8k
SW20
A
A
a
V
b
SW19
b
a
V
b
B
b
a
SW18
SW17
V
51k
V
V
V
a
SW21
b
27
26
25
24
23
OUT3F
OUT3R
OUT4F
OUT4R
BRAKE1
F
a
V
28
IN1
22
MUTE2
21
SW16
A
29
34 AMUTE
b
A
30
POWGND
SW23
31
OUT2F
a
32
OUT2R
b
47
33
OUT1F
SW22
OUTIR
A
33μ
R
c
a
47μ
RCHG
A
+
b
a
V
35 EMP
20
IN2
37 PSW
SW15
A
V
36 HVcc
b
a
19
V
MUTE34
38 CLK
A
SW25
VREF
16
VSYS2
15
OP+
14
V
UTC UA1538
39 START
SW13
a
40 OFF
SW26
b
a
41 CHGVcc
1k
a
SW27
V
V
5
A
100μ
b
V
a
V
A
V
10
11
10k
SW10
SW7
b
a
V
A
a
d
V
+
a
10μ
SW11
50
c 20k
a b
SW9
b
SW12
a
b
10k
a
b
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9
SW8
b
a
b
frequency
a
SW3
8
SW6
V
SW4
SW2
A
7
a
A
10p
SW1
a
6
SW5
12
OP-
4
VSYS1
N.C
3
13
Ct
2
2200p
OPOUT
SPRT
1
EI
SW
100k
DEAD
A
RESET
44 PWMFIL
b SW28
BATT
V a
EO
43 PREGND
BSEN
b
A
42 SEL
+
17
b
a
b
A
A
IN3
SW14
A
A
18
100k
a V
1M
b
470p
+
470μ
A
IN4
A
SW24
A
a
V
V
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LINEAR INTEGRATED CIRCUIT
SWITCHING POSITION TABLE
ITEM
BATT Stand-by Current
BATT Supply Current (No load)
VSYS1 Supply Current (No load)
VSYS2 Supply Current (No load)
CHGVCC Supply Current (No load)
VSYS1 Threshold Voltage
EO Pin Output Voltage “H”
EO Pin Output Voltage ”L”
SPRT Pin Voltage
SPRT Pin Current1 EO=”H”
SPRT Pin Current2 OFF=”L”
SPRT Pin Current3 Over-Voltage
SPRT Pin Impedance
SPRT Pin Threshold Voltage
Over-Voltage Protection Detect
SW Pin Output Voltage1 ”H”
SW Pin Output Voltage2 ”H”
SW Pin Output Voltage2 ”L”
SW Pin Oscillating Frequency 1
SW Pin Oscillating Frequency 2
SW Pin Oscillating Frequency 3
SW Pin Minimum Pulse Width
Pulse Duty Start
Max Pulse Duty At Self-Running
Max Pulse Duty At CLK Synchronization
-: Turn off switch
ITEM
DEAD Pin Impedance
DEAD Pin Output Voltage
OFF Pin Threshold Voltage
OFF Pin Bias Current
START Pin ON Threshold Voltage
START Pin OFF Threshold Voltage
START Pin Bias Current
CLK Pin Threshold Voltage “H”
CLK Pin Threshold Voltage “L”
CLK Pin Bias Current
Starter Switching Voltage
Starter Switching Hysteresis Width
Discharge Release Voltage
VSYS1 Pin RESET Threshold Voltage Ratio
RESET Detection Hysteresis Width
RESET Pin Output Voltage
RESET Pin Pull Up Resistance
AMUTE Pin Output Voltage 1
AMUTE Pin Output Voltage 2
AMUTE Pin Pull Down Resistance
-: Turn off switch
1
a
a
-
4
a
a
a
b
b
b
b
b
b
b
5
a
a
a
b
-
6
a
a
a
a
a
a
a
a
a
a
SW NO.
7
8
a
b
b
b
b
a
a
a
a
b
a
a
b
b
b
b
b
b
b
22
a
a
a
-
24
b
a
b
b
a
25
a
a
a
a
a
a
-
26
a
-
2
b
b
b
a
-
3
b
a
-
4
a
a
a
a
a
a
-
6
a
-
SW NO.
7
8
a
a
a
b
b
a
-
20
b
b
a
24
b
b
a
-
25
a
a
a
a
a
-a
-
26
a
a
-
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QW-R109-023,C
UA1538
„
LINEAR INTEGRATED CIRCUIT
SWITCHING POSITION TABLE(Cont.)
1
a
a
a
a
a
a
a
a
a
a
-
9
a
b
a
-
10
a
d
c
c
d
d
b
d
SW NO.
11
b
a
-
12
a
a
21
a
a
a
a
b
c
a
a
-
27
a
b
a
b
a
a
b
-
Ch1R
Ch2R
Ch3R
Ch4R
Ch1
Ch2
Ch3
Ch4
13
b
b
-
14
b
b
15
b
b
-
SW NO.
16
b
b
-
17
b
b
b
b
b
b
b
b
18
b
b
b
b
b
b
b
b
22
a
a
a
a
a
a
a
a
Ch1
Ch2
Ch3
Ch4
b
-
b
b
-
b
-
b
b
b
b
b
b
b
b
a
a
a
a
Ch1R
Ch2R
Ch3R
Ch4R
Ch1F
Ch1R
Ch2F
Ch2R
Ch3F
Ch3R
Ch4F
Ch4R
b
b
b
-
b
b
b
b
b
b
-
b
b
b
-
b
b
b
b
a
a
a
a
-
b
b
b
b
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
ITEM
EMP Detection Voltage 1
EMP Detection Voltage 2
EMP Detection Hysteresis Voltage 1
EMP Detection Hysteresis Voltage 2
EMP Pin Output Voltage
EMP Pin Output Leak Current
BSEN Pin Input Resistance
BSEN Pin Leak Current
SEL Pin Detection Voltage
SEL Pin Detection Current
Input Bias Current
Input Offset Voltage
“H” Level Output Voltage
“L” Level Output Voltage
Output Drive Current (Source)
Output Drive Current (Sink)
Open Loop Voltage Gain
Slew Rate
-: Turn off switch
ITEM
Voltage Gain
Gain Error By Polarity
Input Pin resistance
Maximum Output
Voltage
Saturation Voltage
(Lower)
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QW-R109-023,C
UA1538
„
LINEAR INTEGRATED CIRCUIT
SWITCHING POSITION TABLE(Cont.)
ITEM
Saturation Voltage
(Upper)
Input Offset Voltage
Output Offset Voltage
Dead Zone
Ch1F
Ch1R
Ch2F
Ch2R
Ch3F
Ch3R
Ch4F
Ch4R
Ch1
Ch2
Ch3
Ch4
Ch1
Ch2
Ch3
Ch4
Ch1
Ch2
Ch3
Ch4
13
b
b
a
b
b
-
14
b
b
a
b
b
SW NO.
16
b
b
a
b
b
-
15
b
b
a
b
b
-
17
a
a
a
a
b
b
b
b
b
b
b
b
18
a
a
a
a
b
b
b
b
b
b
b
b
22
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
-: Turn off switch
ITEM
BRAKE1 ON Voltage
BRAKE1 OFF Voltage
MUTE2 ON Voltage
MUTE2 OFF Voltage
MUTE34 ON Voltage
MUTE34 OFF Voltage
VREF ON Voltage
VREF OFF Voltage
BREAK1 Brake Current
PWM Sink Current
HVCC Level Shift Voltage
HVCC Leak Current
PWM Amp Transfer Gain
Ch1
Ch1
Ch2
Ch2
Ch3
Ch4
Ch3
Ch4
Ch1
Ch2
Ch3
Ch4
Ch1
Ch2
Ch3
Ch4
Ch1
13
b
b
b
b
-
14
b
b
b
b
-
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15
b
b
b
b
-
16
b
b
b
b
b
b
b
b
SW NO.
17
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
18
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
22
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
b
a
a
23
b
a
-
28
a
b
-
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QW-R109-023,C
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„
LINEAR INTEGRATED CIRCUIT
SWITCHING POSITION TABLE(Cont.)
SW NO.
ITEM
19
a
b
a
b
CHGSET Pin Bias Voltage
CHGSET Pin Output Resistance
SEL Pin Leak Current 1
SEL Pin Leak Current 2
SEL Pin Saturation Voltage
-: Turn off switch
„
27
a
a
b
SWITCHING POSITION TABLE
VO4
VO3
VIN1
VIN2
XC'
XC
VO2
Dead Zone
VIN3
VIN4
VO1
Output Offset Voltage
Output Voltage:Vo (mV)
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QW-R109-023,C
UA1538
APPLICATION CIRCUIT
27
26
25
24
BRAKE1
28
OUT4R
29
OUT4F
30
OUT3R
31
TRACKING
FOCUS
OUT3F
OUT2R
32
OUT1F
33
OUTIR
RCHG
1.8k
POWGND
M
SPINDLE
OUT2F
M
TRAVERSE
23
BRAKE1
AMUTE
IN1
34
22
MUTE2
EMP
35
BTL
36
+
BTL
BTL
BTL
20
TSD
37
47
MAXIMUM
DETECTION
CLK
38
CLK
START
+ -
39
POWER
OFF
STARTER
0.1μ
OFF
40
CHGVCC
41
V
/
I
+
V
/
I
+
V
/
I
+
V
/
I
+
IN3
17
VREF
16
VSYS2
15
PRE-DRIVER POWER SUPPLY
-
+
+
-
43
PWMFIL
+ -
+ + -
OP+
CONTROL CIRCUIT
POWER SUPPLY
PREGND
14
VIN
47μ
+
DC-DC
Converter
application
8.2k
VOUT
+
0.022μ
0.1μ
9
470p
10
OP-
8
N.C.
7
CT
-
SPRT
0.1μ
6
EI
5
EO
4
SW
3
DEAD
RESET
BATT
+
2
13
12
10p
1
OPOUT
VSYS1
44
BSEN
19
18
TRIANGLE WAVE
42
2200p
MUTE34
IN4
OVER-VOLTAGE
TSD
SEL
100k
MUTE34
0.1μ
PSW
100k
21
-
47μ
MUTE2
IN2
HVCC
33μ
+
„
LINEAR INTEGRATED CIRCUIT
11
FILTER
100μ
* We shall not be liable for any trouble or damege caused by using this circuit.
*In the evert a problem which may affect industrial property or any other rights of us or a third party is
encountered during the use of information described in these circuit,Mitsumi Electric Co.,Ltd.shall not be
liable for any such problem,nor grant a license therefor.
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QW-R109-023,C
UA1538
„
LINEAR INTEGRATED CIRCUIT
CIRCUIT OPERATION
1 H-bridge driver block
(1) Gain setting
·The driver input resistance (ch 1,3 and 4) are 11kΩ typ. ,ch2 is 7.5kΩ typ. . Set the gain according to the following
formula.
ch1
55k
ch2 GV=20 log
11k+R
ch3
R:Externally-connected input
(db)
110k
ch2 GV=20 log 7.5k+R (db)
·The driver output stage power supply is HVCC (36PIN), and the bridge circuit power supply is VSYS2
(15 PIN). Connect a bypass capacitor between these two power supplies (approximately 0.1μF).
(2) Mute function
·Of the four drivers,ch1 has a brake function, and the other channels have a mute function.
·When BRAKE1(23PIN)is set to high level, both ch1 outputs go low level, and the circuit enters brake mode.
·When MUTE2(21PIN)is set to high level, the ch2 output is muted.
·When MUTE34(19PIN)is set to high level, the ch3 and 4 outputs are muted.
(3) VREF drop mute
·When the voltage applied to VREF (16PIN)is 1.0V or less typ. , the driver outputs are set to high impedance.
(4) Thermal shutdown
·When the chip temperature reaches 150℃ typ. the output current is cut. The chip starts operating again at
about 120℃ typ. .
2 PWM power supply drive block
·This detects the maximun output level from among the four channels, and supplies the load drive power
supply (36PIN)for the PWM. The external components are a PNP transistor, coil, Schottky diode, and
capacitor.
3 DC-DC converter block
(1) Output voltage
·3.2V typ. voltage multiplier circuit can be constructed using external components. This voltage can be
varied with the addition of an external resistor. The setting method is as follows.
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QW-R109-023,C
UA1538
„
LINEAR INTEGRATED CIRCUIT
CIRCUIT OPERATION(Cont.)
(2) Short protect function
·When the error amplifier output(6PIN)has switched to the high-level state, SPRT (8PIN)is charged, and when
the voltage reaches 1.2V typ. , the SW(5PIN)switching stops. The time until switching stops is set by the
capacitor connected to SPRT(8PIN)according to the following formula.
(3) Soft start function
·The soft start function operates when a capacitor is connected between DEAD(4PIN)and GND.
Also, the maximum duty can be varied by connecting a resistor to 4PIN.
(4) Power off function
·When low-level is applied to OFF(40PIN), SPRT(8PIN)is charged, and when the voltage reaches 1.2V typ. ,
the SW(5PIN)switching stops. The time until switching stops is set by the capacitor connected to
SPRT (8PIN)according to the following formula.
(5) Over voltage protection circuit
·When the voltage applied to BSEN(1PIN)reaches 8.4V typ. , SPRT (8PIN) is charged, and when the voltage
reaches 1.2V typ. , theSW (5PIN)switching stops. The time until switching stops is set by the capacitor
connected to SPRT(8PIN)according to the following formula.
4 Empty detector block
(1) Output voltage
·When the voltage applied to the BSEN(1PIN)falls below the detector voltage, EMP(35PIN)goes from high
level to low level(open-collector output). The detector voltage has 50mV typ. of hysteresis to prevent
output chattering. Use SEL (42PIN) to switch the detection voltage as shown below.
SEL
Detect Voltage Return Voltage
L
2.20V typ.
2.25V typ.
High-Z
1.80V typ.
1.85V typ.
5 Reset circuit block
·At about 90% typ. of the DC-DC converter output voltage, RESET(3PIN)goes from low level to high level,
and AMUTE(34PIN)goes from high level to low level. The reset voltage has 50mV typ. of hysteresis to
prevent output chattering.
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QW-R109-023,C
UA1538
„
LINEAR INTEGRATED CIRCUIT
CIRCUIT OPERATION(Cont.)
6 Charging circuit block
·The power supply for the charging circuit block is CHGVCC (41PIN), and is independent from the other
circuits. The resistance between RCHG (33PIN) and GND sets the charging current. This current is drawn
from SEL (42PIN).
·A thermal shutdown circuit is provided, and when the chip temperature reaches 150℃ typ. the charging
current is cut. The chip starts operating again at about 120℃ typ. .
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QW-R109-023,C
UA1538
„
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTIC
Output Voltage:Vo (V)
Input Load Fluctuation
Output Voltage:Vo (V)
Input Load Fluctuation (ch2)
Input voltage: VIN (mV)
Dead Zone
Dead Output voltage E:VDAED (V)
Eo Output Voltage:VEO(V)
Error Amp Output Voltage
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QW-R109-023,C
UA1538
„
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTIC
Reset Output Voltage:VRST (V)
Resete Pin Voltage
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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21 of 21
QW-R109-023,C
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