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參數(shù)資料
| 型號： | S-8331B20FS-T2G |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO8 |
| 封裝： | SSOP-8 |
| 文件頁數(shù)： | 1/1頁 |
| 文件大小： | 65K |
| 代理商： | S-8331B20FS-T2G |
36
POWER SUPPLY ICs
S-8330/8331 series
STEP-UP SWITCHING REGULATOR
FOR LCD BIAS SUPPLY
The S-8330/8331 series is a CMOS PWM-control step-up
switching regulator that consists of a reference voltage
source, an oscillation circuit, a power MOS FET (for the S-
8330 series), and an error amplifier. The output voltage can
be adjusted by electronic volume. A shutdown function is
also available. The S-8330 series features low current con-
sumption due to the CMOS structure, and a step-up switch-
ing regulator can be constructed simply by externally con-
necting a coil, capacitors and a diode. The compact 8-pin
SSOP package and small number of external components
make the S-8330 series ideal for LCD bias generators in
portable equipment. For applications requiring a high output
current, the external transistor controller type S-8331 series
is also available.
Maximum output voltage: 20 V to 30 V (2 V steps)
12 V range can be adjusted by electronic volume
Output current:
5 mA (VIN = 5 V, VOUT = 30 V)
Low current consumption:
100
A typ. (180 kHz product, VIN = 5 V, during operation)
1.0
A max. (during power-off)
Shutdown function:
Stepping up operation is stopped, and VOUT
pin is shorted to GND at shutdown.
Input voltage range: 2.0 to 9.0 V
Soft start function
Built-in CR oscillation circuit: 180 kHz typ. (A series)
50 kHz typ. (B series)
Package:
8-pin SSOP
Built-in 8-bit electronic volume
External transistor type is available (S-8331 series)
Power supply for medium-sized or large-sized LCD panels.
Power supply for portable equipment such as pagers, pocket cal-
culators, electronic organizers, and remote controllers.
Constant voltage power supply for cameras, video equipment, and
communications equipment.
VOUT
PWM
controller
VREF
VIN
L
SD
CONT
ON/OFF
+
–
CR oscillation
circuit
+
–
VDIN
VCLK
VSTRB
CL
VSS
Cb
External
Tr
L
VIN
Rb
CIN
EXT
S-8331 series
S-8330 series
RESET
CIN
8-pin SSOP
Top view
1
2
3
4
8
7
6
5
Description
Electric volume data input pin
Electric volume clock input pin
Electric volume strobe signal input pin
Output voltage monitor pin
Power supply pin
External inductor connection pin
(S-8330 series: Open drain output)
External transistor connection pin
(S-8331 series: Push-pull (CMOS output))
Shutdown pin
"H": Normal operation (stepping up operation)
"L": Stepping up stopped
GND pin
Pin No.
1
2
3
4
5
6
7
8
Pin name
VDIN
VCLK
VSTRB
VOUT
VIN
CONT
EXT
ON / OFF
VSS
S-8331AxxFS
series
S-8331A20FS-T2
S-8331A22FS-T2
S-8331A24FS-T2
S-8331A26FS-T2
S-8331A28FS-T2
S-8331A30FS-T2
Output voltage
range (V)
8 to 20V
10 to 22V
12 to 24V
14 to 26V
16 to 28V
18 to 30V
S-8330AXXFS
series
S-8330A20FS-T2
S-8330A22FS-T2
S-8330A24FS-T2
S-8330A26FS-T2
S-8330A28FS-T2
S-8330A30FS-T2
S-8330BXXFS
series
S-8330B20FS-T2
S-8330B22FS-T2
S-8330B24FS-T2
S-8330B26FS-T2
S-8330B28FS-T2
S-8330B30FS-T2
S-8331BxxFS
series
S-8331B20FS-T2
S-8331B22FS-T2
S-8331B24FS-T2
S-8331B26FS-T2
S-8331B28FS-T2
S-8331B30FS-T2
FEATURES
APPLICATIONS
SELECTION GUIDE
PIN CONFIGURATION
BLOCK DIAGRAM AND CIRCUIT CONNECTION EXAMPLE
(2000/reel)
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