Epson S1F76610 series User manual

MF302-12
S1F70000 Series
Technical Manual
IEEE1394 Controller
Technical Manual
S1F70000 Series
EPSON Electronic Devices Website
ELECTRONIC DEVICES MARKETING DIVISION
First issue November,1990 U
Revised July,2001 in Japan H B
4.5mm
POWER SUPPLY IC
S1F76610 Technical Manual
http://www.epson.co.jp/device/
This manual was made with recycle paper,
and printed using soy-based inks.

S1F76610 Series
S1F70000 Series EPSON 2–1
Technical Manual
S1F76610
Series
DESCRIPTION
The S1F76610 Series is a highly effecient CMOS DC/
DC converter for doubling or tripling an input voltage.
It incorporates an on-chip voltage regulator to ensure
stable output at the specified voltage. The S1F76610
Series offers a choice of three, optional temperature
gradients for applications such as LCD panel power
supplies.
The S1F76610C0B0 is available in 14-pin plastic DIPs,
the S1F76610M0B0, in 14-pin plastic SOPs, and the
S1F76610M2B0 in 16-pin plastic SSOPs.
FEATURES
• 95% (Typ.) conversion efficiency
• Up to four output voltages, VO, relative to the input
voltage, VI
• On-chip voltage regulator
• 20mA maximum output current at VI= –5V
• Three temperature gradients : –0.1, –0.4 and –0.6%/
°C
V DD
Voltage
multiplier
(1)
Voltage
multiplier
(2)
CR
oscilator
Reference
voltge
generator
Temperature
gradient
selector
Voltage regulator
TC1
TC2
RV
P
OFF
V REG
V O
V I
OSC2
OSC1
CAP1+
CAP1–
CAP2+
CAP2–
Multiplication
stage Stabilization stage
BLOCK DIAGRAM
S1F76610 Series CMOS DC/DC Converter (Voltage
Doubler / Tripler) & Voltage Regulator
• External shut-down control
•2µA maximum output current when shut-down
• Two-in-series configuration doubles negative output
voltage.
• On-chip RC oscillator
• S1F76610C0B0 ...... Plastic DIP-14 pin
S1F76610M0B0...... Plastic SOP5-14 Pin
S1F76610M2B0...... Plastic SSOP2-16 pin
APPLICATIONS
• Power supplies for LCD panels
• Fixed-voltage power supplies for battery-operated
equipment
• Power supplies for pagers, memory cards, calculators
and similar hand-held equipment
• Fixed-voltage power supplies for medical equipment
• Fixed-voltage power supplies for communications
equipment
• Power supplies for microcomputers
• Uninterruptable power supplies

S1F76610 Series
2–2 EPSON S1F70000 Series
Technical Manual
PIN ASSIGNMENTS
PIN DESCRIPTIONS
S1F76610C0B0/M0B0
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
CAP+
CAP–
CAP2+
CAP2–
TC1
TC2
VI
14
13
12
11
10
9
8
VDD
OSC1
OSC2
POFF
RV
VREG
VO
CAP+
CAP–
NC
CAP2+
CAP2–
TC1
TC2
VI
VDD
OSC1
NC
OSC2
POFF
RV
VREG
VO
16
15
14
13
12
11
10
9
S1F76610M2B0S1F76610C0B0/M0B0
Description
Positive charge-pump connection for ×2 multiplier
Negative charge-pump connection for ×2 multiplier
Positive charge-pump connection for ×3 multiplier
Negative charge-pump connection for ×3 multiplier or ×2 multiplier output
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Pin name
CAP1+
CAP1–
CAP2+
CAP2–
TC1
TC2
VI
VO
VREG
RV
POFF
OSC2
OSC1
VDD
Temperature gradient selects
Negative supply (system ground)
×3 multiplier output
Voltage regulator output
Voltage regulator output adjust
Voltage regulator output ON/OFF control
Resistor connection. Open when using external clock
Resistor connection. Clock input when using external clock
Positive supply (system VCC)

S1F76610 Series
S1F70000 Series EPSON 2–3
Technical Manual
S1F76610
Series
SPECIFICATIONS
Absolute Maximum Ratings
Notes
1. Using the IC under conditions exceeding the aforementioned absolute maximum ratings may lead to permanent destruction of
the IC. Also, if an IC is operated at the absolute maximum ratings for a longer period of time, its functional reliability may be
substantially deteriorated.
2. All the voltage ratings are based on VDD = 0V.
3. The output terminals (VO,VREG) are meant to output boosted voltage or stabilized boosted voltage. They, therefore, are not the
terminals to apply an external voltage. In case the using specifications unavoidably call for application of an external voltage,
keep such voltage below the voltage ratings given above.
Reconmmended Operating Conditions
VDD = 0V, Ta = –40 to +85˚C unless otherwise noted
Notes
1. The recommended circuit configuration for low-valtage operation (when VIis between –1.2V and –2.2V) is shown in
the following figure. Note that diode D1 should have a maximum forward voltage of 0.6V with 1.0mA forward current.
2. RLmin can be varied depending on the input voltage.
Rating
Parameter Symbol Conditions
Oscillator startup voltage
Oscillator shutdown voltage
Load resistance
Output current
Clock frequency
CR oscillator network resistance
Capacitance
Stabilization voltage sensing resis-
tance
VSTA
VSTP
RL
IO
fOSC
ROSC
C1, C2, C3
RRV
ROSC =1MΩ
C3= 10 µF, CL/C3≤1/20,
Ta = –20 to +85˚C.
See note 1.
ROSC = 1MΩ
ROSC = 1MΩ
Min.
—
—
–1.8
RLmin.
See note 2.
—
10.0
680
3.3
100
Typ.
—
—
—
—
—
—
—
—
—
Max.
–1.8
–2.2
—
—
20.0
30.0
2,000
—
1,000
Unit
V
V
Ω
mA
kHz
kΩ
µF
kΩ
N = 2: Boosting to a double voltage
N = 3: Boosting to a triple voltage
OSC1, OSC2, POFF
TC1, TC2, RV
VONote 3)
VREG Note 3)
Plastic package
At leads
Parameter Codes Ratings Units Remarks
Input supply voltage
Input terminal voltage
Output voltage
Allowable dissipation
Working temperature
Storage temperature
Soldering temperature
and time
VI– VDD
VI– VDD
VO– VDD
PD
Topr
Tstg
Tsol
–20/N to VDD + 0.3
VI– 0.3 to VDD + 0.3
VO– 0.3 to VDD + 0.3
–20 to VDD + 0.3
VOto VDD + 0.3
Max. 300
–40 to +85
–55 to +150
260 • 10
V
V
V
V
V
mW
°C
°C
°C • s

S1F76610 Series
2–4 EPSON S1F70000 Series
Technical Manual
3. RLmin is a function of V1
Electrical Characteristics
VDD = 0V, V1= –5V, Ta = –40 to +85°C unless otherwise noted
C1
10µF
C2
10µF
1
2
3
4
5
6
7
14
13
12
11
10
9
8
R
OSC
C L R L
1MΩ
C3
22µF
D1
+
+
+
5
4
3
2
1
01Input voltage (V)
Minimum load resistance (kΩ)
654321.5
V STA2
V STA1
Voltage
tripler
Voltage
doubler
SymbolParameter Conditions
Input voltage
Output voltage
Regulator voltage
Stabilization circuit operating voltage
Multiplier current
Stabilization current
Quiescent current
Clock frequency
VI
VO
VREG
VO
IOPR1
IOPR2
IQ
fOSC
RL= ∞, RRV = 1MΩ,
VO= –18V
RL= ∞, ROSC = 1MΩ
RL= ∞, RRV = 1MΩ,
VO= –15V
TC2 = TC1 = VO, RL= ∞
ROSC = 1MΩ
Rating
Min.
–6.0
–18.0
–18.0
–18.0
—
—
—
16.0
Typ.
—
—
—
—
40
5.0
—
20.0
Max.
–1.8
—
–2.6
–3.2
80
12.0
2.0
24.0
Unit
V
V
V
V
µA
µA
µA
kHz

S1F76610 Series
S1F70000 Series EPSON 2–5
Technical Manual
S1F76610
Series
Unit
Ω
%
%/V
Ω
Ω
V
%/˚C
µA
Parameter
Output impedance
Multiplication efficiency
Stabilization output voltage
differential
Stabilization output load differential
Stabilization output saturation
resistance
Reference voltage
Temperature gradient
POFF, TC1, TC2, OSC1, and RV
input leakage current
Symbol
RO
Peff
RSAT
VRV
CT
ILKI
∆VREG
∆IO
Conditions
IO= 10mA
IO= 5mA
∆VREG
∆VO·VREG
VO= –18 to –8V,
VREG = –8V, RL= ∞,
Ta = 25˚C
VO= –15V,
VREG = –8V, Ta = 25˚C,
IO= 0 to 10µA,
TC1 = VDD, TC2 = VO
RSAT = ∆(VREG – VO)/∆IO,
IO= 0 to 10µA,
RV= VDD, Ta = 25˚C
TC2 = TC1 = VO,
Ta = 25˚C
TC2 = VDD, TC1 = VO,
Ta = 25˚C
See note.
Rating
Min.
—
90.0
—
—
—
–2.3
–1.7
–1.1
–0.25
–0.5
–0.7
—
Typ.
150
95.0
0.2
5.0
8.0
–1.5
–1.3
–0.9
–0.1
–0.4
–0.6
—
Max.
200
—
—
—
—
–1.0
–1.1
–0.8
–0.01
–0.3
–0.5
2.0
RC2 = VO, TC1 = VDD,
Ta = 25˚C
Note
|VREG (50°C)| – |VREG (0°C)|
50°C – 0°C100 |VREG (25°C)|
CT= ×

S1F76610 Series
2–6 EPSON S1F70000 Series
Technical Manual
Typical Performance Characteristics
1000
100
10
110 100 1000 10000
R OSC [kΩ]
f
OSC
[kHz]
V I = –5V
V
I = –3V
V
I = –2V
Ta = 25°C
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8–40 –20 0 20 40 60 80 100
Ta [°C]
f
OSC
[kHz]
V I = –5.0V
V
I = –3.0V
V
I = –2.0V
(1) Clock frequency vs. External resistance (2) Clock frequency vs. Ambient temperature
150
100
50
0–7 –6 –5 –4 –3 –2 –1 0
VI[V]
IOPR [µA]
fOSC = 40kHz
fOSC =
20kHz
fOSC = 10kHz
Ta = 25°C
0
–5
–10
–150 10203040
I
O [mA]
V
O
[V]
Ta = 25°C
V
I = –5.0V
×2 multiplier
×3 multiplier
(3) Multiplier current vs. Input voltage (4) Output voltage vs. Output current

S1F76610 Series
S1F70000 Series EPSON 2–7
Technical Manual
S1F76610
Series
0
–5
–10
–15 0 102030
I
O [mA]
Vo [V]
×2 multiplier
×3 multiplier
Ta = 25°C
V
I = –3.0V
I O [mA]
V
O
[V]
0
012345678910
–1
–2
–3
–4
–5
–6
Ta = 25°C
V
I = –2.0V
×2 multiplier
×3 multiplier
(5) Output voltage vs. Output current (6) Output voltage vs. Output current
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
0 1020304050
I
O [mA]
I
I
[mA]
Peff [%]
×3 multiplier
I I
Ta = 25°C
V
I = –5.0V
×2 multiplier
Peff
×3 multiplier
Peff
×2 multiplier
I I
0 5 10 15 20 25 30
I O [mA]
60
54
48
42
36
30
24
18
12
6
0
I
I
[mA]
100
90
80
70
60
50
40
30
20
10
0
Peff [%]
Ta = 25°C
V
I = –3.0V
×3 multiplier
I I
×3 multiplier
Peff
×2 multiplier
Peff
×2 multiplier
I I
(7) Multiplication efficiency/input current (8) Multiplication efficiency/input current
vs. Output current vs. Output current

S1F76610 Series
2–8 EPSON S1F70000 Series
Technical Manual
012345678910
I
O [mA]
I
I
[mA]
100
90
80
70
60
50
40
30
20
10
0
40
36
32
28
24
20
16
12
8
4
0
Peff [%]
Ta = 25°C
V
I = –2.0V
×2 multiplier
Peff
×3 multiplier
Peff
×3 multiplier
I I
×2 multiplier
I I
500
400
300
200
100
0–7 –6 –5 –4 –3 –2 –1 0
V
I [V]
R
O
[Ω]
Ta = 25°C
I
O = 6mA
×3 multiplier
×2 multiplier
(9) Multiplication efficiency/input current (10) Output impedance vs. Input voltage
vs. Output current
–7 –6 –5 –4 –3 –2 –1 0
V
I [V]
500
400
300
200
100
0
R
O
[Ω]
×3 multiplier
Ta = 25°C
I
O = 10mA
×2 multiplier
100
90
80
70
60
50 1 10 100 1000
f
OSC [kHz]
Peff [%]
I O = 2mA
I
O = 5mA
I
O = 10mA
I
O = 20mA
I
O = 30mA
Ta = 25°C
V I = –5.0V
(11) Output impedance vs. Input voltage (12) Multiplication efficiency vs. Clock frequency

S1F76610 Series
S1F70000 Series EPSON 2–9
Technical Manual
S1F76610
Series
1 10 100 1000
f OSC [kHz]
100
90
80
70
60
50
Peff [%]
I O = 0.5mA
I O = 1.0mA
I O = 2.0mA
I O = 4.0mA
Ta = 25°C
V I = – 3.0V
V O = –15V
–7.850
–7.900
–7.950
–8.000
0.0001 0.0010 0.0100 0.1000
Ta = 25°C
V
REG
[V]
I O [V]
(13) Multiplication efficiency vs. Clock frequency (14) Output voltage vs. Output current
–5.850
–5.900
–5.950
–6.000
0.0001 0.0010 0.0100 0.1000
V
REG
[V]
I O [V]
V O = –9V
Ta = 25°C
–2.850
–2.900
–2.950
–3.000
V
REG
[V]
0.0001 0.0010 0.0100 0.1000
I
O [V]
V O = –6V
Ta = 25°C
(15) Output voltage vs. Output current (16) Output voltage vs. Output current

S1F76610 Series
2–10 EPSON S1F70000 Series
Technical Manual
0 5 10 15 20
0.30
0.25
0.20
0.15
0.10
0.05
0.00
Ta = 25°C
V
O = –5V
V
O = –10V
V
O = –15V
I
O [mA]
|VREG-VO| [V]
50
0
–50 –40 –20 0 20 40 60 80 100
CT0
Ta [°C]
100×|V
REG
(°C)|-|V
REG
(25°C)|/|V
REG
(25°C)| [%]
CT1
CT2
(17) Regulator voltage vs. Output current (18) Regulator output stability ratio vs.
Ambient temperature
Temperature Gradient Control
The S1F7661C0B0 offers a choice of three temperature
gradients which can be used to adjust the voltage regu-
lator output in applications such as power supplies for
driving LCDs.
Notes
1. The definition of LOW for POFF differs from that for TC1 and TC2.
2. The temperature gradient affects the voltage between VDD and VREG.
POFF
1 (VDD)
1 (VDD)
1 (VDD)
1 (VDD)
0 (VI)
0 (VI)
0 (VI)
0 (VI)
TC2
See note 1.
Low (VO)
Low (VO)
High (VDD)
High (VDD)
Low (VO)
Low (VO)
High (VDD)
High (VDD)
TC1
Low (VO)
High (VDD)
Low (VO)
High (VDD)
Low (VO)
High (VDD)
Low (VO)
High (VDD)
–0.4
–0.1
–0.6
–0.6
—
—
—
—
Temperature
gradient
(%/˚C)
See note 2.
Voltage
regulator
output CR osciliator Remarks
ON
ON
ON
ON
OFF
(high impedance)
OFF
(high impedance)
OFF
(high impedance)
OFF
(high impedance)
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
Serial connection
Multiplier
operational

S1F76610 Series
S1F70000 Series EPSON 2–11
Technical Manual
S1F76610
Series
FUNCTIONAL DESCRIPTIONS
CR Oscillator
The on-chip CR oscillator network frequency is deter-
mined by the external resistor, ROSC, connected be-
tween OSC1 and OSC2. This oscillator can be disabled
in favor of an external clock by leaving OSC2 open and
applying an external clock signal to OSC1.
OSC1
Oscillator External clock
External clock
signal
R
OSC
OSC2
OSC1
OSC2
Reference Volatge Generator and Voltage
Regulator
The reference voltage generator supplies a reference
voltage to the voltage regulator to control the output.
This voltage can be switched ON and OFF.
V DD
V REG
R RV = 100 kΩto 1 MΩ
RV
P
OFF Control signal
Voltage Multiplier
The voltage multiplier uses the clock signal from the
oscillator to double or triple the input voltage. This re-
quires three external capacitors–two charge-pump ca-
pacitors between CAP1+ and CAP1– and CAP2+ and
CAP2–, respectively, and a smoothing capacitor be-
tween VIand VO.
C4
R1
R2
+
10 µF
V
REG
= –8 V
V
I
= –5 V
R
RV
100 kΩ
to
1 MΩ
ROSC
1 MΩ
C1 +
10 µF
C2
5 V +
10 µF
C3
+10 µF
V
O
= –15 V
V
DD
= 0 V
14
13
12
11
10
9
8
1
2
3
4
5
6
7
Double voltage potential levels
V CC
(+5V)
GND
(–5V)
V DD = 0 V
V
I = –5 V
V
CAP2 – = 2V I = –10 V
Tripled voltage potential levels
VDD = 0 V
VI = –5 V
VO = 3VI = –15 V

S1F76610 Series
2–12 EPSON S1F70000 Series
Technical Manual
TYPICAL APPLICATIONS
Voltage Tripler with Regulator
The following figure shows the circuit required to triple
the input voltage, regulate the result and add a tempera-
ture gradient of –0.4%/°C. Note that the high input im-
pedance of RV requires appropriate noise countermea-
sures.
C4
R1
R2
+
10 µF
V
REG
= –8 V
=V
RV
V
I
= –5 V
R
RV
100 kΩ
to
1 MΩ
R
OSC
1 MΩ
C1 +
10 µF
C2
5 V +
10 µF
C3
+10 µF
V
O
= –15 V
V
DD
= 0 V
14
13
12
11
10
9
8
1
2
3
4
5
6
7R
RV
R
1
Converting a Voltage Tripler to a Voltage
Doubler
To convert this curcuit to a voltage doubler, remove ca-
pacitor C2 and short circuit CAP2– to VO.
V
I
= –5 V
R
OSC
1 MΩ
C1 +
10µF
C2
5V +
10µF
C3
+10 µF
V
O
= –15 V
V
DD
= 0 V
14
13
12
11
10
9
8
1
2
3
4
5
6
7
Parallel Connection
Connecting two or more chips in parallel reduces the
output impedance by 1/n, where nis the number of de-
vices used.
Only the single output smoothing capacitor, C3, is re-
V
DD
= 0 V
V
I
= –5 V V
O
= –15 V V
REG
= –10 V
5 V
C1
10 µFR
OSC
1 MΩR
OSC
1 MΩ
+
C2
10 µF+
C1
10 µF+
C2
10 µF+
C4
10 µF
R RV
100 kΩ
to
1 MΩ
+
C3
10 µF
+
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1
2
3
4
5
6
7
14
13
12
11
10
9
8
quired when any number of devices are connected in
parallel. Also, the voltage regulator in one chip is suffi-
cient to regulate the combined output.

S1F76610 Series
S1F70000 Series EPSON 2–13
Technical Manual
S1F76610
Series
Serial Connection
Connecting two or more chips in series obtains a higher
output voltage than can be obtained using a parallel
<Precautions when connecting loads>
In case of series connections, when connecting loads
between the first stage VDD (or other potential of the
second stage VDD or up) and the second stage VREG as
shown in Fig. 2-13, be cautions about the following
point.
* When normal output is not occurring at the VREG ter-
minal such as at times of starting up or when turning
the VREG off by POFF signals, if current flows into the
second stage VREG terminal through the load from
connection, however, this also raises the output imped-
ance.
the first stage VDD (or other potential of the second
stage VDD or up) to cause a voltage exceeding the
absolute maximum rating for the second stage VDD at
the VREG terminal, normal operation of the IC may be
hampered. Consequently, When making a series
connection, insert a diode D1 between the second
stage VIand VREG as shown in Fig. 2-13 so that a
voltage exceeding the second stage VDD or up may
not be applied to the VREG terminal.
Positive Voltage Conversion
Adding diodes converts a negative voltage to a positive
one.
To convert the voltage tripler shown earlier to a voltage
doubler, remove C2 and D2, and short circuit D3. Small
Schottky diodes are recommended for all these diodes.
The resulting voltage is lowered by VF, the voltage drop
in the forward direction for each diode used. For ex-
ample, if VDD = 0V, VI= –5V, and VF= 0.6V, the re-
sulting voltages would be as follows.
• For a voltage tripler,
VO= 10 – (3 ×0.6) = 8.2V
• For a voltage doubler,
VO= 5 – (2 ×0.6) = 3.8V
10µF
1MΩ
10µF
10µF
+
–
+–
V DD = 0V
V
O = –20V V
REG ' = –15V
V
DD ' = V I = –5V
D1
V I = –5V
5V
+
–
10µF
+
–
+
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1
2
3
4
5
6
7
14
13
12
11
10
9
8
10µF
+
–
10µF
100kΩ
1MΩ
to
–
Load
V O = –10V= V I
V
I
= –5 V
V
DD
= 0 V
V
O
= 8.2 V C3
10 µF
+
C2
10 µF
+
C1
10 µF
+R
OSC
1 MΩ
D1
D2
5 V
D3
1
2
3
4
5
6
7
14
13
12
11
10
9
8

S1F76610 Series
2–14 EPSON S1F70000 Series
Technical Manual
Simultaneous Voltage Conversion
Combining a standard voltage tripler circuit with one
for positive voltage conversion generates both –15 and
8.2V outputs from a single input, however, it also raises
the output impedance.
A voltage doubler generates –10 and 3.8V outputs.
Potential levels
VDD = 0 V
VI = –5 V
VO1 = –15 V
VO2 = 8.2V
Using an External Gradient
The S1F7661C0B0/M0B0 offers three built-in tem-
perature gradients— –0.1, –0.4 and –0.6%/°C.
To set the gradient externally, place a thermistor, RT, in
series with the variable resistor, RRV, used to adjust the
output voltage.
RT
VREG
RRV
R1
10 µF
VDD
RP
+
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
DD
= 0 V
V
I
= –5 V
V
O2
= 8.2 V V
O1
= –15 V
+
+
10 µF
10 µF
10 µF
10 µF
10 µF
10 µF
+
R
OSC
1 MΩ
D1
D2
5 V
D3
+
++
1
2
3
4
5
6
7
14
13
12
11
10
9
8