S1F75300M1A1000 [SEIKO]
SWITCHING REGULATOR, 200kHz SWITCHING FREQ-MAX, PDSO24, PLASTIC, SSOP-24;
| 型号： | S1F75300M1A1000 |
| 厂家： | 
SEIKO EPSON CORPORATION |
| 描述： | SWITCHING REGULATOR, 200kHz SWITCHING FREQ-MAX, PDSO24, PLASTIC, SSOP-24 开关 光电二极管 |
| 文件： | 总23页 (文件大小：176K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
-
MF1558 01
Power Supply IC
S1F75300M1
Technical Manual
NOTICE
No part of this material may be reproduced or duplicated in any form or by any means without the written
permission of Seiko Epson. Seiko Epson reserves the right to make changes to this material without notice.
Seiko Epson does not assume any liability of any kind arising out of any inaccuracies contained in this material
or due to its application or use in any product or circuit and, further, there is no representation that this material
is applicable to products requiring high level reliability, such as, medical products. Moreover, no license to
any intellectual property rights is granted by implication or otherwise, and there is no representation or warranty
that anything made in accordance with this material will be free from any patent or copyright infringement of a
third party. This material or portions thereof may contain technology or the subject relating to strategic
products under the control of the Foreign Exchange and Foreign Trade Law of Japan and may require an export
license from the Ministry of International Trade and Industry or other approval from anther government agency.
©SEIKO EPSON CORPORATION 2003, All rights reserved.
All other product names mentioned herein are trademarks and/or registered trademarks of their respective
companies.
Configuration of product number
zDEVICES
S1
F
75300 M 00A0
00
Packing specifications
00: Besides tape & reel
0A: TCP BL 2 directions
0B: Tape & reel Back
0C: TCP BR 2 directions
0D: TCP BT 2 directions
0E: TCP BD 2 directions
0F: Tape & reel FRONT
0G: TCP BT 4 directions
0H: TCP BD 4 directions
0J: TCP SL 2 directions
0K: TCP SR 2 directions
0L: Tape & reel LEFT
0M:TCP ST 2 directions
0N: TCP SD 2 directions
0P: TCP ST 4 directions
0Q: TCP SD 4 directions
0R: Tape & reel RIGHT
99: Specs not fixed
Specifications
Shape
(M : Plastic SSOP)
Model number
Model name
(F : Power Supply)
Product classification
(S1:Semiconductors)
CONTENTS
1. DESCRIPTION....................................................................................................................................1
2. FEATURES .........................................................................................................................................1
3. BLOCK DIAGRAM .............................................................................................................................2
4. PIN DESCRIPTION.............................................................................................................................3
4.1 Pin Function................................................................................................................................3
4.2 Pin Assignment...........................................................................................................................3
5. FUNCTIONAL DESCRIPTION ...........................................................................................................4
5.1 Outline Description .....................................................................................................................4
5.2 Switching Regulator Unit............................................................................................................5
5.2.1 PWM Circuit..................................................................................................................5
5.2.2 Soft Start Circuit............................................................................................................5
5.3 Voltage Regulator Unit................................................................................................................6
5.3.1 Reference voltage generation circuit............................................................................6
5.3.2 Voltage Regulator Circuit..............................................................................................6
5.3.3 Output Voltage External Regulation Pin (VOL) .............................................................6
5.3.4 Data Input Unit..............................................................................................................7
5.4 Voltage Follower Unit..................................................................................................................9
5.5 EN Pin.......................................................................................................................................10
6. SERIES SPECIFICATION.................................................................................................................10
7. ELECTRIC CHARACTERISTICS.....................................................................................................11
7.1 Absolute Maximum Ratings......................................................................................................11
7.2 Electric Characteristics.............................................................................................................12
7.2.1 Voltage Follower Unit of Boosting Switching Regulator [S1F75300M1A1000].......12
7.2.2 Voltage Follower Unit of Boosting Switching Regulator [S1F75300M1B1000].......13
7.2.3 Electronic Volume [S1F75300M1A1000].................................................................14
7.2.4 Electronic Volume [S1F75300M1B1000].................................................................15
8. EXTERNAL CONNECTION EXAMPLES.........................................................................................16
9. REFERENCE CIRCUIT EXAMPLE..................................................................................................16
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S1F75300M1 Technical Manual
1. DESCRIPTION
The S1F75300M1 is the single power supply input and the power supply IC for liquid crystal that generates all
the bias voltages required for the STN liquid crystal panel. It consists of the boosting circuit, which uses the
switching regulator system, the voltage regulator adjustable by the 8-bit electronic volume, and the voltage
follower circuit, etc. The S1F75300M1 is most suitable for middle or small size liquid crystal panels.
2. FEATURES
•
Current consumption
Current consumption at VDD = 5V (at no-load)
S1F75300M1A1000: 1.8mA (Typ.)
S1F75300M1B1000: 2.0mA (Typ.)
Current consumption at VDD = 3.3 V (at no-load)
S1F75300M1A1000: 1.9mA (Typ.)
S1F75300M1B1000: 2.2mA (Typ.)
•
Boosting output voltage
S1F75300M1A1000: 25V
S1F75300M1B1000: 27V
•
•
Voltage regulator
It inputs the boosting output, stabilizes the output voltage and is adjusted by the electronic volume.
Most suitable for small and medium size liquid crystal panels
S1F75300M1A1000: 1/160 duty
S1F75300M1B1000: 1/240 duty
•
•
•
Current consumption using the power off function at standby is reduced.
SSOP3-24PIN
This IC has no radiation resistance.
Rev.1.0
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S1F75300M1 Technical Manual
3. BLOCK DIAGRAM
VSW
VOUT1
V
DD
SS
SS2
V
D1
V
PWM control
circuit
Reference voltage
generation circuit
V
V
OUT2
ROSC
V0
EN
Soft start circuit
V1
CLK
DATA
Data input
unit
V2
V3
V4
LATCH
SSCAP
VOL
Discharge
circuit unit
NC
Fig.1 S1F75300M1 Block Diagram
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S1F75300M1 Technical Manual
4. PIN DESCRIPTION
4.1 Pin Function
Signal name
I/O
O
O
I
Function
VSW
External switching transistor drive pin
ROSC
EN
External resistance connection pin for oscillation current regulation
Enable pin
HIGH; Normal operation, LOW; System operation stop
Capacitor connecting pin for the soft start setting.
By connecting the capacitor between this pin and VSS pin, the soft start function becomes
active. This pin should be opened when it is not in use.
Electronic volume and bias adjustment Clock input pin
Electronic volume and bias adjustment Data input pin
Electronic volume and bias adjustment Data latch input pin
Output voltage external adjustment pin
SSCAP
O
CLK
DATA
LATCH
VOL
I
I
I
O
I
VOUT1
VOUT2
V0
Output voltage monitoring pin
O
I
Output voltage pin
LCD voltage pin 0
V1
O
O
O
O
O
I
LCD voltage pin 1
V2
LCD voltage pin 2
V3
LCD voltage pin 3
V4
LCD voltage pin 4
VD1
Reference voltage pin. Connects the capacitor between VSS.
Power supply pin
VDD
VSS, VSS2
NC
I
GND pin. Connects the VSS and VSS2 externally and sets them to the same electric potential.
This pin should be opened or conducted with a VSS connection.
4.2 Pin Assignment
SSOP3-24PIN
1
24
NC
NC
DATA
CLK
VDD
V
OL
OUT1
OUT2
LATCH
SSCAP
V
V
VSS
VD1
ROSC
EN
V
0
1
2
3
4
V
V
V
V
VSS2
NC
VSW
NC
NC
12
13
Fig.2 Pin Assignment
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S1F75300M1 Technical Manual
5. FUNCTIONAL DESCRIPTION
5.1 Outline Description
The S1F75300M1 consists of the PWM control circuit, the reference voltage generation circuit, the data input
circuit, the voltage regulator unit, the voltage follower unit and the soft start circuit and discharge circuit unit.
The S1F75300M1 stabilizes the boosting voltage (VOUT2), given by the coil boosting at the voltage (VOUT1)
regulator unit and generates the voltage (V0, V1, V2, V3, and V4) at the voltage follower unit from this voltage.
The relation of the output voltage is described in Fig.3.
The S1F75300M1 generates the VOUT1 voltage by boosting from the supply voltage VDD.
It inputs the VOUT1 voltage to the voltage regulator unit and generates the constant VOUT2 voltage.
The voltage follower unit voltage adds the VOUT2 for the voltage regulator unit to the V0 pin and outputs the
voltage according to the internal resistance ratio of both the S1F75300M1A1000 and the S1F75300M1B1000
from V1, V2, V3, and V4.
VOUT1
VOUT2
V0
V1
V2
Voltage regulator unit
Coil boosting
Voltage follower
unit
VDD
V
3
4
V
VSS
VSS
Fig.3 Potential Relation Diagram
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S1F75300M1 Technical Manual
5.2 Switching Regulator Unit
The boosting circuit of the switching regulator system can be made by connecting the external parts including
the power MOSFFT, the diode, the inductor, the capacitor and resistor as shown in Fig.3.
5.2.1 PWM Circuit
The PWM control circuit generates the square wave signal with constant frequency from the VSW pin. The
duty of the square wave varies depending on the current load. The square wave drives the external power
MOSFET gate, which in turn conducts the on and off operation. The inductance L stores the energy when the
power MOSFET is on. The energy stored at the inductance charges the capacitor through the diode D and
raises the voltage VOUT1 pin when the power MOSFET is off.
control circuit, which controls the boosting voltage.
The VOUT1 voltage is returned to the PWM
L
D
VOUT1
C1
VDD
VSW
Tr1
VD1
PWM control
circuit
Reference voltage
generation circuit
ROSC
EN
VDD
C3
R
Soft start circuit
SSCAP
C2
VSS/VSS2
Fig.4 Block Diagram of Boosting Circuit
5.2.2 Soft Start Circuit
When connecting the capacitor to the SSCAP pin, the soft start function becomes active. The soft start
function mitigates the incoming current at the start of the boosting operation (EN = VDD). The SSCAP pin is
set to the VSS level when the power is off (EN = VSS). When the operation state (EN = VDD) is set, charging
to the soft start capacitor starts, and the SSCAP pin voltage rises. The output voltage rises almost in
proportion with the SSCAP pin voltage. Therefore, the higher the capacity value for the soft start capacitor
rises, the weaker the incoming current. However, experimental confirmation in each application is necessary
as the boosting time is longer.
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S1F75300M1 Technical Manual
5.3 Voltage Regulator Unit
5.3.1 Reference voltage generation circuit
The reference voltage generation circuit does not depend on the input supply voltage but generates a constant
voltage. The reference voltage generation circuit has a built-in temperature compensation circuit. The
temperature gradient is -0.06 %/°C (Typ.). It is used in the IC as the voltage regulator’s reference voltage.
5.3.2 Voltage Regulator Circuit
The voltage regulator circuit stabilizes the boosting circuit’s output voltage and outputs from the VOUT2 pin.
By externally inputting the serial data, the VOUT2 output voltage has an electronic volume function that enables
the VOUT2 output to be adjusted by changing the internal residence value of the voltage regulator circuit of
Fig.5.
VOUT1
Reference voltage
generation circuit
VOUT2
VOL
Fig.5 Voltage Regulator
5.3.3 Output Voltage External Regulation Pin (VOL)
The voltage VOUT2 boosted and stabilized by the output voltage setting stabilization circuit allows the output
voltage to be finally adjusted by connecting the external resistor to the output voltage external adjustment pin
VOL (as shown in Fig.10 in section 8, External Connection Examples).
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5.3.4 Data Input Unit
The S1F75300M1 adjusts the VOUT2 output voltage by inputting the serial data.
The data input unit consists of an 8-bit shift register and an 8-bit latch as shown in Fig.6.1. The latch data is
input to the electronic volume unit and the voltage adjustment is conducted.
The unit inputs 8-bits of data from DATA pin and simultaneously inputs the clock signal synchronized with the
data from CLK pin. Then, by inputting the LATCH signal, the 8-bit serial data is incorporated with an 8-bit
latch. This process determines the internal residence state at the electronic volume unit and sets the VOUT2 to
the required output voltage.
The block diagram and the timing chart are displayed in the following figures:
DATA : The serial data input pin that sets the output voltage and bias value.
“Data 1” is input to HIGH level and “Data 0” is input to LOW level.
Moreover, the data is input in the order from (LSB) to (MSB).
CLK : It is the clock input pin to the shift register.
The DATA pin’s data is incorporated into the shift register at the rising edge of the clock.
The incorporated data is shifted sequentially in each clock. Then, the final input data becomes
active.
LATCH : It is a latch signal input pin.
By setting the latch signal to HIGH, the shift register’s register contents are incorporated into the 8-bit
latch.
8-bit shift register
DATA
CLK
LATCH
8-bit latch
Electronic volume unit
Fig.6.1 Block Diagram of Data Input Unit
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S1F75300M1 Technical Manual
D0 D1 D2 D3 D4 D5 D6 D7
DATA
CLOCK
LATCH
Fig.6.2 Timing Chart of Data Input Unit
Table 1 Electronic Volume Set Value List
Electronic volume
D7
D6
D5
D4
D3
D2
D1
D0
S1F75300M1A1000 S1F75300M1B1000
set value
0
0
0
0
0
0
0
0
0
M
127
128
M
12V
M
16.98V
17.02V
M
14V
M
18.98V
19.02V
M
M
M
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
255
22V
24V
The electronic volume has an 8-bit resolution. If switching more than a D2 bit, the error is more than 1 LSB,
and the straight error may be more than 5 LSB if switching from 127 to 128 of the electronic volume set value.
The maximum straight error within a variable voltage range of 10V of the electronic volume is 5 LSB and the
electronic volume accuracy is equivalent to 5 bit.
The following formulas show how to calculate the output voltage (Typ. value) of VOUT2.
10
V
V
OUT2 = 12 +
× value
× value
x
x
x
x
x
x
x
x
x S1F75300M1A1000
x S1F75300M1B1000
255
10
OUT2 = 14 +
255
Note) value: Electronic volume set value (10 decimal)
[Note 1] After turning on the power, the internal register’s state is unstable, so the register state needs to be
determined. If it is CLK, LATCH = VDD, then the register is set and the VOUT2 output voltage
increases to its maximum.
[Note 2] Turn the power on by conducting the following procedures:
1) Turn the power on with the EN pin set to the VSS state, 2) Determine the state by setting the
register or writing the data into the register, 3) Start boosting with the EN pin set to VDD.
[Note 3] The register should be set or the data should be written at EN = VSS. Otherwise, the output voltage
of the VOUT2 will be unstable. Appropriate data should be written into the register data at EN = VSS
to prevent excessive voltage to the connecting equipment.
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S1F75300M1 Technical Manual
5.4 Voltage Follower Unit
The voltage follower unit at the S1F75300M1 supplies the power to the external element including the crystal
liquid drive driver IC.
The block diagram of the voltage follower unit is shown in Fig.7.
The voltage follower unit’s duty is set by the residence nR between V2 and V3.
The n value is n = 11 for S1F75300M1A1000, and n = 13 for S1F75300M1B1000. Each pin voltage of V1 to
V4 is shown in Table 2.
Table 2 Output Voltage of Voltage Follower Unit
S1F75300M1A1000
n=10
S1F75300M1B1000
n=13
(1/160 Duty)
22 to 12
(1/240 Duty)
24 to 14
V0 (V)
V1 (V)
V2 (V)
V3 (V)
V4 (V)
13/14 × V0
12/14 × V0
2/14 × V0
16/17 × V0
15/17 × V0
2/17 × V0
1/14 × V0
1/17 × V0
V
OUT1
OUT2
Voltage
regulator
V
V0
R
V1
V2
V3
V4
R
nR
R
R
XEN
Fig.7 Block Diagram of Voltage Follower Unit
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S1F75300M1 Technical Manual
The voltage follower pins, V1, V2, V3 and V4, and the voltage regulator output pin, VOUT2, have a built-in
discharge transistor, which discharges the electric charge residing in each pin to the VSS. The V0 pin
discharges the electric charge by externally connecting with the VOUT2 pin.
5.5 EN Pin
It conducts the boosting operation and stops or activates the voltage follower unit.
When the EN pin is set to the LOW level, it stops the internal circuit operation, suppresses the current
consumption, and discharges the electric charge residing in each pin at the voltage follower unit and the output
pin at the voltage regulator to VSS.
6. SERIES SPECIFICATION
Boosting
voltage
25V
Product Model No.
VOUT2 voltage
Voltage follower duty
S1F75300M1A1000
S1F75300M1B1000
22V to 12V
24V to 14V
1/160
1/240
27V
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S1F75300M1 Technical Manual
7. ELECTRIC CHARACTERISTICS
7.1 Absolute Maximum Ratings
(VSS = 0V, Ta = 25°C)
Rated value
Item
Symbol
Unit
Applicable pin
Remarks
Min.
-0.3
-0.3
-0.3
-0.3
-0.3
Max.
7.0
Input supply voltage
Output pin voltage 1
Output pin voltage 2
Input pin voltage 1
Input pin voltage 2
Acceptable loss
Operating
VDD
VOUT1
VOUT2
VIN1
V
V
V
V
VDD
7.0
VSW, ROSC, VD1, SSCAP, V4
VOUT2, V1, V2, V3, VOL
DATA, CLK, LATCH, EN
VOUT1, V0
40
VDD + 0.3
40
VIN1
Pd
520
mW
Topr
-30
-65
85
°C
temperature
Storage temperature
Soldering
Tstg
Tsol
150
°C
260/10
°C/s
Lead Unit
temperature/time
(Note 1) No external voltage should be given to the output pin and capacitor connecting pin.
(Note 2) Using when the absolute maximum ratings are exceeded may cause operation failures or permanent
breakdowns. Reliability may drop significantly even when operating normally.
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S1F75300M1 Technical Manual
7.2 Electric Characteristics
7.2.1 Voltage Follower Unit of Boosting Switching Regulator [S1F75300M1A1000]
DC Characteristics
Unless otherwise specified, Ta = 25°C
Standard value
Item
Symbol
Unit
Condition
Min.
Typ.
Max.
Input voltage
VDD
2.7
5.5
26
V
V
Boosting operation stop
voltage
VOUT
VDD = 5.0V
Current Consumption
Actual operation current
consumption (1)
Actual operation current
consumption (2)
Current consumption at
Enable
IOPVDD1
IOPVDD2
Ien
1.8
1.9
3.6
3.8
5
mA
mA
µA
VDD = 5.0V (at no-load)
VDD = 3.3V (at no-load)
VDD = 5.0V
Load stability
∆VOUT2
90
mV
VOUT1 = 26V, VDD = 5V
IVOUT2 = -10mA
Adaptive pin: VOUT2
VDD = 5.0V
Output voltage
temperature coefficient
Oscillation frequency
∆VOUT2 /
∆Ta
-0.06
150
Adaptive pin: VOUT2
VDD = 5V, ROSC = 180kΩ
Adaptive pin: VSW
VDD = 5V, VOUT1 = 24V
Adaptive pin: VSW
Fclk
100
80
200
90
kHz
%
Maximum duty ratio
Fduty
Input Condition 1
VDD = 5V, VOUT1 = 26V, V0 = 22V
Adaptive pin: Pin in each measurement item
Standard value
Typ.
Item
Symbol
Unit
Min.
Max.
V1, Output
voltage
V1OH
V1OL
V2OH
V2OL
V3OH
V3OL
V4OH
V4OL
V1 + 130mV
V2 + 50mV
V3 + 130mV
V4 + 50mV
V
V
V
V
IOH = 2mA, V1 = Voltage at no-load
IOL = -2mA, V1 = Voltage at no-load
IOH = 2mA, V2 = Voltage at no-load
IOL = -2mA, V2 = Voltage at no-load
IOH = 2mA, V3 = Voltage at no-load
IOL = -2mA, V3 = Voltage at no-load
IOH = 2mA, V4 = Voltage at no-load
IOL = -2mA, V4 = Voltage at no-load
V1 - 50mV
V2 - 130mV
V3 - 50mV
V4 - 100mV
V2, Output
voltage
V3, Output
voltage
V4, Output
voltage
Input Condition 2
VDD = 5V, VOUT1 = 26V, V0 = 12V
Adaptive pin: pin in each measurement item
Standard value
Typ.
Item
Symbol
Unit
Min.
Max.
V1, Output
voltage
V1OH
V1OL
V2OH
V2OL
V3OH
V3OL
V4OH
V4OL
V1 + 100mV
V
V
V
V
IOH = 2mA, V1= Voltage at no-load
IOL = -2mA, V1= Voltage at no-load
IOH = 2mA, V2= Voltage at no-load
IOL = -2mA, V2= Voltage at no-load
IOH = 2mA, V3= Voltage at no-load
IOL = -2mA, V3= Voltage at no-load
IOH = 2mA, V4= Voltage at no-load
IOL = -2mA,V4= Voltage at no-load
V1 - 50mV
V2 - 100mV
V3 - 50mV
V4 - 80mV
V2, Output
voltage
V2 + 50mV
V3 + 100mV
V4 + 50mV
V3, Output
voltage
V4, Output
voltage
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7.2.2 Voltage Follower Unit of Boosting Switching Regulator [S1F75300M1B1000]
DC Characteristics
Unless otherwise specified, Ta = 25°C
Standard value
Item
Symbol
Unit
Condition
Min.
Typ.
Max.
Input voltage
VDD
2.7
5.5
26
V
V
Boosting operation stop
voltage
VOUT
VDD = 5.0V
Current consumption
Actual operation current
consumption (1)
Actual operation current
consumption (2)
Current consumption at
Enable
IOPVDD1
IOPVDD2
Ien
1.8
1.9
3.6
3.8
5
mA
mA
µA
VDD = 5.0V (at no-load)
VDD = 3.3V (at no-load)
VDD = 5.0V
Load stability
∆VOUT2
90
mV
VOUT1 = 26V, VDD = 5V
IVOUT2 = -10mA
Adaptive pin: VOUT2
VDD = 5.0V
Output voltage
temperature coefficient
Oscillation frequency
∆VOUT2 /
∆Ta
-0.06
150
Adaptive pin: VOUT2
VDD = 5V, ROSC = 180kΩ
Adaptive pin: VSW
VDD = 5V, VOUT1 = 24V
Adaptive pin: VSW
Fclk
100
80
200
90
kHz
%
Maximum duty ratio
Fduty
Input Condition 1
VDD = 5V, VOUT1 = 28V, V0 = 24V
Adaptive pin: Pin in each measurement item
Standard value
Typ.
Item
Symbol
Unit
Min.
Max.
V1, Output
voltage
V1OH
V1OL
V2OH
V2OL
V3OH
V3OL
V4OH
V4OL
V1 + 130mV
V2 + 50mV
V3 + 130mV
V4 + 50mV
V
V
V
V
IOH = 2mA, V1 = Voltage at no-load
IOL = -2mA, V1 = Voltage at no-load
IOH = 2mA, V2 = Voltage at no-load
IOL = -2mA, V2 = Voltage at no-load
IOH = 2mA, V3 = Voltage at no-load
IOL = -2mA, V3 = Voltage at no-load
IOH = 2mA, V4 = Voltage at no-load
IOL = -2mA, V4 = Voltage at no-load
V1 - 50mV
V2 - 130mV
V3 - 50mV
V4 - 100mV
V2, Output
voltage
V3, Output
voltage
V4, Output
voltage
Input Condition 2
VDD = 5V, VOUT1 = 28V, V0 = 14V
Adaptive pin: Pin in each measurement item
Standard value
Typ.
Item
Symbol
Unit
Min.
Max.
V1, Output
voltage
V1OH
V1OL
V2OH
V2OL
V3OH
V3OL
V4OH
V4OL
V1 + 100mV
V
V
V
V
IOH = 2mA, V1 = Voltage at no-load
IOL = -2mA, V1 = Voltage at no-load
IOH = 2mA, V2 = Voltage at no-load
IOL = -2mA, V2 = Voltage at no-load
IOH = 2mA, V3 = Voltage at no-load
IOL = -2mA, V3 = Voltage at no-load
IOH = 2mA, V4 = Voltage at no-load
IOL = -2mA, V4 = Voltage at no-load
V1 - 50mV
V2 - 100mV
V3 - 50mV
V4 - 80mV
V2, Output
voltage
V2 + 50mV
V3 + 100mV
V4 + 50mV
V3, Output
voltage
V4, Output
voltage
Rev.1.0
EPSON
13
S1F75300M1 Technical Manual
7.2.3 Electronic Volume [S1F75300M1A1000]
DC Characteristics
Unless otherwise specified, Ta = 25°C
Standard value
Typ.
Item
Symbol
Unit
Condition
Min.
Max.
Output voltage range
VOUT2
11
23
V
VDD = 5V,
Adaptive pin VOUT2
VDD = 5V (Note)
VDD = 5V (Note)
HIGH level input voltage
LOW level input voltage
VIH
VIL
VDD × 0.8
V
V
VDD × 0.2
(Note) Adaptive pin: CLK, DATA, LATCH, EN
AC Characteristics
Unless otherwise specified, Ta = 25°C
Standard value
Typ.
Item
Symbol
Unit
Condition
Min.
Max.
CLK cycle
tCLK
1
µs
VDD = 5V
Adaptive pin: CLK
VDD = 5V
Adaptive pin: CLK, DATA
VDD = 5V
Adaptive pin: CLK, DATA
VDD = 5V
Adaptive pin: CLK
VDD = 5V
Data setup time
tCST
tCHT
tWLTC
tLST
0.5
0.5
0.5
0.5
0.5
µs
µs
µs
µs
µs
Data hold time
LATCH pulse width
CLK fall → LATCH rise
LATCH fall → CLK rise
Adaptive pin: CLK, LATCH
VDD = 5V
tLHT
Adaptive pin: CLK, LATCH
D6
D7
D0
DATA
CLK
tCST
tCHT
tWLTC
tCLK
tLST
tLHT
LATCH
Fig.8.1 AC Characteristics Timing Chart of Electronic Volume Unit
14
EPSON
Rev.1.0
S1F75300M1 Technical Manual
7.2.4 Electronic Volume [S1F75300M1B1000]
DC Characteristics
Unless otherwise specified, Ta = 25°C
Standard value
Typ.
Item
Symbol
Unit
Condition
Min.
Max.
Output voltage range
VOUT2
13
25
V
VDD = 5V,
Adaptive pin VOUT2
VDD = 5V (Note)
VDD = 5V (Note)
HIGH level input voltage
LOW level input voltage
VIH
VIL
VDD × 0.8
V
V
VDD × 0.2
(Note) Adaptive pin: CLK, DATA, LATCH, EN
AC Characteristics
Unless otherwise specified, Ta = 25°C
Standard value
Typ.
Item
Symbol
Unit
Condition
Min.
Max.
CLK cycle
tCLK
1
µs
VDD = 5V
Adaptive pin: CLK
VDD = 5V
Adaptive pin: CLK, DATA
VDD = 5V
Adaptive pin: CLK, DATAA
VDD = 5V
Adaptive pin: CLK
VDD = 5V
Data setup time
tCST
tCHT
tWLTC
tLST
0.5
0.5
0.5
0.5
0.5
µs
µs
µs
µs
µs
Data hold time
LATCH pulse width
CLK fall → LATCH rise
LATCH fall → CLK rise
Adaptive pin: CLK, LATCH
VDD = 5V
tLHT
Adaptive pin: CLK, LATCH
D6
D7
D0
DATA
CLK
tCST
tCHT
tWLTC
tCLK
tLST
tLHT
LATCH
Fig.8.2 AC Characteristics Timing Chart of Electronic Volume Unit
Rev.1.0
EPSON
15
S1F75300M1 Technical Manual
8. EXTERNAL CONNECTION EXAMPLES
(1) Connection Example 1
A standard circuit example for S1F75300M1 is as shown in Fig.9.
(2) Connection Example 2
A connection example for connecting the variable residence to the VOL pin and adjusting the VOUT2 is as shown
in Fig.10.
D
D
L
L
C1
C1
VOUT1
VOUT1
VDD
VOUT2
VDD
VOUT2
Tr
Tr
V
SW
V
SW
V
0
1
V
0
1
en
data
clk
EN
V
en
data
clk
EN
V
DATA
CLK
DATA
CLK
V2
V3
V4
V2
V3
V4
latch
LATCH
ROSC
latch
LATCH
ROSC
R1
R1
V
D1
OL
V
D1
OL
SSCAP
SSCAP
C3
C3
C2
C2
V
V
R2
VSS/VSS2
VSS/VSS2
VR
Fig.9 Connection Example 1
Parts Example
Fig.10 Connection Example 2
Symbol
Constant
Remarks
Sumida CR105
Toshiba 2SK2615
Symbol
Constant
Schott key
4.7µF
Remarks
L
180µH
D
Shindengen D1FS4
Tr
C2
C1
C3
Panasonic CSF1HE475
Panasonic CSF1VE105
0.1µF
1.0µF
Note) Characteristics may vary depending on the conditions or the parts to be used. Select them after
conducting full evaluation.
9. REFERENCE CIRCUIT EXAMPLE
Liquid crystal driver, V0, V1, V4 and V5 in the liquid crystal panel module is connected to the common driver
and V0, V2, V3 and VSS is connected to the segment driver.
D
L
C1
VOUT1
VDD
VOUT2
Tr
V
SW
V
0
1
en
data
clk
EN
V
DATA
CLK
V2
V3
V4
Liquid crystal display
panel module
latch
LATCH
ROSC
R1
V
D1
OL
SSCAP
C3
C2
V
VSS/VSS2
Fig.11 Reference Circuit Example
16
EPSON
Rev.1.0
International Sales Operations
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FAX: 054-454-6093
Phone: +44-(0)1344-381700
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ELECTRONIC DEVICES MARKETING DIVISION
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Phone: +33-(0)1-64862350
FAX: +33-(0)1-64862355
Phone: +81-(0)42-587-5816
FAX: +81-(0)42-587-5624
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assists in creating the products of our customers’ dreams.
Epson IS energy savings.
S1F75300M1
Technical Manual
SEIKO EPSON CORPORATION
ELECTRONIC DEVICES MARKETING DIVISION
EPSON Electronic Devices Website
http://www.epsondevice.com/
First issue February, 2003
H
Printed in Japan
A
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