S-9365AAAAAI6TIG2 SII [Seiko Instruments Inc], S-9365AAAAAI6TIG2 Datasheet - Page 25

• Manufacturer Part Number: S-9365AAAAAI6TIG2
• Description: STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
• Manufacturer: SII [Seiko Instruments Inc]

Rev.1.1
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Precaution
Caution The above connection diagram and constant will not guarantee successful operation. Perform
(3) Low input voltage (SOT-23-5)
• Mount external capacitors and inductor as close as possible to the IC. Set single point ground.
• Characteristics ripple voltage and spike noise occur in IC containing switching regulators. Moreover rush current
• The 0.1 µF capacitor connected between the VDD and VSS pins is a bypass capacitor. It stabilizes the power
• Although the IC contains a static electricity protection circuit, static electricity or voltage that exceeds the limit of
• The power dissipation of the IC greatly varies depending on the size and material of the board to be connected.
• SII claims no responsibility for any disputes arising out of or in connection with any infringement by products
flows at the time of a power supply injection. Because these largely depend on the inductor, the capacitor and
impedance of power supply used, fully check them using an actually mounted model.
supply in the IC when application is used with a heavy load, and thus effectively works for stable switching
regulator operation. Allocate the bypass capacitor as close to the IC as possible, prioritized over other parts.
the protection circuit should not be applied.
Perform sufficient evaluation using an actual application before designing.
including this IC of patents owned by a third party.
V
_00
IN
thorough evaluation using an actual application to set the constants.
C
IN
L
Q1
R
ON/OFF
b
C
b
EXT
ON/OFF
circuit
PWM / PFM switching
IC internal
power supply
Seiko Instruments Inc.
PWM control, or
control circuit
PWM comparator
Figure 22
Ground point
SD
oscillation circuit
Triangular wave
+
−
with soft-start circuit
Reference voltage
Error
amplifier
+
−
VSS
S-8365/8366 Series
VDD
FB
C
FB
C
R
R
OUT
FB1
FB2
V
OUT
0.1 µF
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