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PDF S-8330 Data sheet ( Hoja de datos )

Número de pieza S-8330
Descripción Step-Up Switching Regulator (DC/DC Converter ICs)
Fabricantes Seiko Instruments USA 
Logotipo Seiko Instruments USA Logotipo



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No Preview Available ! S-8330 Hoja de datos, Descripción, Manual

Rev.5.1_00
STEP-UP, FOR LCD BIAS SUPPLY, 1-CHANNEL
SWITCHING REGULATOR
www.DataSheet4U.com
S-8330/8331 Series
The S-8330/8331 Series is a CMOS PWM-control step-up
switching regulator which mainly consists of a reference voltage
source, an oscillation circuit, a power MOS FET (for S-8330
Series) , and an error amplifier. The output voltage can adjust by
built-in Electric volume circuit, and equip with shutdown function.
The S-8330 Series is low current consumption because of
CMOS structure , and a step-up switching regulator constructed
by externally connecting only a coil, a capacitor and a diode.
This feature, along with its 8-Pin SSOP package and a few
external components, makes the S-8330 Series ideal for LCD
bias generators of portable equipment. For applications
requiring a high output current, products used with an external
transistor (S-8331 Series) are also available.
„ Features
Maximum output voltage: 20 V to 30 V (2 V step)
12 V range can be adjusted by electric volume
Output voltage accuracy :±2.4%
Output current: 5 mA ( VIN= 5 V,VOUT= 30 V)
Low current consumption :
During operation: 100 μA (typ.) (VIN= 5 V 180 kHz)
During shutdown : 1.0 μA (max.)
Shutdown function: Stepping up operation is stopped ,
and Vout pin is shorted to GND while shutdown.
Input voltage range: 2.0 to 9.0 V
Soft start function
Built-in CR oscillation circuit:
Oscillating frequency: 180 kHz (typ.) (A series)
Oscillating frequency: 50 kHz (typ.) (B series)
8-pin SSOP plastic package
8-bit built-in electric volume circuit
External transistor type is available (S-8331 Series)
Lead-free products
„ Applications
Power supplies for medium type or large type
LCD panel.
Power supplies for portable devices such as
pagers, handy calculators, and remote
controllers
Constant voltage power supplies for
cameras, video equipment, and
communication equipment
„ Package
Package name
8-Pin SSOP
Package
FS008-A
Drawing code
Tape
FS008-A
Reel
FS008-A
Seiko Instruments Inc.
1

1 page




S-8330 pdf
Rev.5.1_00
www.DataSheet4U.com
STEP-UP, FOR LCD BIAS SUPPLY, 1-CHANNEL SWITCHING REGULATOR
S-8330/8331 Series
„ Electrical Characteristics
1. S-8330A Series
Step-Up Switching Regulator
Items
Symbols
Conditions
S-8330A20FS
S-8330A22FS
Output voltage range VOUT S-8330A24FS
S-8330A26FS
S-8330A28FS
S-8330A30FS
Output voltage accuracy
Input voltage
VIN
Current consumption 1 ISS1 VIN =5 V, VOUT = Output voltage Max.
Current consumption 2 ISS2 VIN =2 V, VOUT = Output voltage Min.
Current consumption
ISSS Power off pin
during power off
Switching current
=VDIN=0 V,VIN=VCLK=VSTRB=5 V
ISW VCONT=0.4 V
Switching transistor
ISWQ Power off pin =0 V , VCONT=9 V
leakage current
S-8330A20FS
S-8330A22FS
Line regulation
ΔVOUT1 VIN =3 V to 6 V
S-8330A24FS
S-8330A26FS
S-8330A28FS
S-8330A30FS
Load regulation
ΔVOUT2
VIN =5 V
IOUT=output voltage/2.4 MΩ to
output voltage/24 kΩ
S-8330A20FS
S-8330A22FS
Output voltage ΔVOUT/ΔTa Ta= -20°C to +70°C S-8330A24FS
temperature coefficient
S-8330A26FS
S-8330A28FS
S-8330A30FS
Oscillating frequency
fosc VOUT =output voltage×0.95
Measure waveform at CONT pin
Maximum duty ratio
Max Duty VOUT =output voltage×0.95
Measure waveform at CONT pin
VSH1 VOUT =output voltage×0.95 VIN 3.0 V
Power off terminal
input voltage
VSH2
VSL
Check oscillation at CONT pin VIN < 3.0 V
VOUT =output voltage×0.95
Check oscillation stop at CONT pin
Power off terminal
input leakage current
ISL VIN =9 V
Soft start time
TSS
Efficiency
EFFI
Min.
8
10
12
14
16
18
2.0
100
144
60
2.4
1.6
-1
1
(Unless otherwise specified: Ta=25°C)
Typ. Max.
Unit Mea.Circ.
— 20
— 22
— 24
V
5
— 26
— 28
— 30
±2.4%
%
5
— 9.0
V
2
100 200
μA
4
50 100
μA
4
— 1.0
μA
4
200 —
— 1.0
mA
μA
3
±300
±330
±360
±390
±420
±450
±30
mV
mV
5
5
±1.0 —
±1.1 —
±1.2 — mV/°C
±1.3 —
±1.4 —
±1.5 —
180 216
kHz
72 84
%
——
——
— 0.4
V
—1
μA
36
85 —
ms
%
5
2
2
2
1
5
Seiko Instruments Inc.
5

5 Page





S-8330 arduino
Rev.5.1_00
www.DataSheet4U.com
STEP-UP, FOR LCD BIAS SUPPLY, 1-CHANNEL SWITCHING REGULATOR
S-8330/8331 Series
4. Characteristics Common to S-8330/31Series
Electric Volume
Item
Symbol
Conditions
S-833XX20FS
S-833XX22FS
Output voltage range (Note 1)
VOUT
S-833XX24FS
S-833XX26FS
S-833XX28FS
S-833XX30FS
Potential division accuracy
Electric volume resolution
Error in linearity (Note 1)
Data setup time
Data hold time
VCLK falling edge to VSTRB
rising edge
VSTRB pulse width
VSTRB falling edge to VCLK
rising edge
VCLK pulse width
VCLK period
VDIN,VCLK,VSTRB Input voltage
“H” level
VDIN,VCLK,VSTRB Input voltage
“L” level
VDIN,VCLK,VSTRB Input leakage
current
tsc
thc
tss
tda
ths
tdc
ttc
VSHC1
VIN 3.0 V
VSHC2 VIN <3.0 V
VSLC
ISLC VIN =9 V
(Unless otherwise specified: Ta=25°C)
Min.
Typ. Max.
Unit Mea. cir.
8 — 14
14 — 20
10 — 16
16 — 22
12 — 18
18
— 24
V 5 (6)
14 — 20
20 — 26
16 — 22
22 — 28
18 — 24
24 — 30
— ±2.4
% 5 (6)
1/256
5 (6)
— — ±1/2 LSB 5 (6)
0.5 — — μA —
0.5 — — μA —
0.5 — — μA —
0.5 — — μA —
0.5 — — μA —
0.5 4.17 —
5 8.33 —
2.4 — —
μA —
μA —
1.6 — — V —
— — 0.2
-1 — 1 μA 1
VDIN
D1
D0
D7 (next MSB)
VCLK
ttc
tsc
thc
VSTRB
tdc
ts s
Figure 4 Data Input Timing
tda
ths
Note 1:
An electric volume has 8-bit resolution. However, its error in linearity may exceed ±1/2LSB only
before and after switching from 127 to 128 (from 01111111 to 10000000). When the electric
volume is used within the variable range of 12 V, its error in linearity corresponds to 6 bits (±2.4%
potential division accuracy is ensured).
Seiko Instruments Inc.
11

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