S-8331A30FS-T2-G Seiko Instruments, S-8331A30FS-T2-G Datasheet - Page 22

• Manufacturer Part Number: S-8331A30FS-T2-G
• Description: IC REG SW PWM SHTDN 18-30V 8SSOP
• Manufacturer: Seiko Instruments
• Type: Step-Up (Boost)r

Specifications of S-8331A30FS-T2-G

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 18 ~ 30 V
• Current - Output: 5mA
• Frequency - Switching: 180kHz
• Voltage - Input: 2 ~ 9 V
• Operating Temperature: -20°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SSOP
• Power - Output: 300mW
• Output Voltage: 30 V
• Operating Temperature Range: - 20 C to + 70 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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STEP-UP, FOR LCD BIAS SUPPLY, 1-CHANNEL SWITCHING REGULATOR
S-8330/8331 Series
Figure 14 shows a circuit example using the 2SK2159 manufactured by NEC Electronics Corporation
as a MOS FET transistor (Nch). Use an Nch power MOS FET as a MOS FET. The EXT pin in the S-
8331 series can drive a MOS FET with approx.1000 pF gate capacitance. The ON reisistor of the MOS
FET depends upon a difference between voltage input voltage V
FET and thereby affects the output amperage and the efficiency. The gate voltage and the current of
the MOS FET are supplied by input voltage V
that the IC will not function if the threshold voltage of the MOS FET is higher than the input voltage.
5.2 Enhancement MOS FET type
V
Figure 14 Circuit Example Using the 2SK2159
IN
L
EXT
V
SS
RESET
Seiko Instruments Inc.
2SK2159
SBD
IN
. So pay attention if the input voltage is low. Also note
V
ON/OFF
OUT
ZD:15V
R
A
IN
2SJ356
and the threshold voltage of the MOS
R
M
B
N
+
−
CL
Rev.6.0
_00