S-8330 PDF даташит
Спецификация S-8330 изготовлена «Seiko Instruments USA» и имеет функцию, называемую «Step-Up Switching Regulator (DC/DC Converter ICs)». |
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Детали детали
Номер произв | S-8330 |
Описание | Step-Up Switching Regulator (DC/DC Converter ICs) |
Производители | Seiko Instruments USA |
логотип |
41 Pages
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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
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STEP-UP, FOR LCD BIAS SUPPLY, 1-CHANNEL SWITCHING REGULATOR
S-8330/8331 Series
Block Diagram
www.DataSheet4U.com
Rev.5.1_00
L
VIN
CO NT
SD
PWM
Contr ol
Cir cuit
CR Oscillation
Ci rc ui t
+
−
VREF
RESET
VOU T
VDIN
VCLK
+
CL
−
VSTR B
External
Transis tor
L
VIN
Rb EXT
Cb
VSS
ON/OF F
(1) S-8330 Series
(2) S-8331 Series
VSS
Figure 1 Block Diagram
Selection Guide
1. Product Name
S - 833 X X XX FS - T2 - G
2. Product list
Output voltage range (V)
8 to 20
10 to 22
12 to 24
14 to 26
16 to 28
18 to 30
S-8330AXXFS Series
S-8330A20FS-T2-G
S-8330A22FS-T2-G
S-8330A24FS-T2-G
S-8330A26FS-T2-G
S-8330A28FS-T2-G
S-8330A30FS-T2-G
Tape Specification
Package name (abbreviation)
Maximum Output voltage
Product category
A: fosc=180 kHz
B: fosc= 50 kHz
Power transistor
0: Built-in switch
1: External transistor
S-8330BXXFS Series
S-8330B20FS-T2-G
S-8330B22FS-T2-G
S-8330B24FS-T2-G
S-8330B26FS-T2-G
S-8330B28FS-T2-G
S-8330B30FS-T2-G
S-8331AXXFS Series
S-8331A20FS-T2-G
S-8331A22FS-T2-G
S-8331A24FS-T2-G
S-8331A26FS-T2-G
S-8331A28FS-T2-G
S-8331A30FS-T2-G
2 Seiko Instruments Inc.
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Rev.5.1_00
www.DataSheet4U.com
STEP-UP, FOR LCD BIAS SUPPLY, 1-CHANNEL SWITCHING REGULATOR
S-8330/8331 Series
Pin Assignment
8-pin SSOP
Pin No. Symbol
Description
Top view
1 VDIN Electric volume data input pin
2 VCLK Electric volume clock input pin
3 VSTRB Electric volume strobe signal input pin
1 8 4 VOUT Output voltage pin
2 7 5 VIN Power supply pin
6 CONT External inductor connection pin (Note 1)
3 6 EXT External transistor connection pin (Note 2 )
4 5 Shutdown pin
7 ON / OFF “H”: normal operation
(stepping up operation)
Figure 2 Pin Assignment
“L”: stop stepping up operation
8 VSS GND pin
Note 1: S-8330 Series: Open drain output
Note 2: S-8331 Series: CMOS output
Seiko Instruments Inc.
3
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Номер в каталоге | Описание | Производители |
S-8330 | Step-Up Switching Regulator (DC/DC Converter ICs) | Seiko Instruments USA |
S-8331 | Step-Up Switching Regulator (DC/DC Converter ICs) | Seiko Instruments USA |
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