S-8533 Seiko Instruments, S-8533 Datasheet - Page 2

• Manufacturer Part Number: S-8533
• Description: SYNCHRONOUS PWM CONTROL SWITCHING REGULATOR CONTROLLER
• Manufacturer: Seiko Instruments

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2
STEP-DOWN, SYNCHRONOUS PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8533 Series
Remark All the diodes in the figure are parasitic diodes.
Block Diagram
V
IN
C
+
C
IN
SS
Tr
Tr
PDRV
NDRV
CSS
VIN
source with soft start
Seiko Instruments Inc.
Reference voltage
PWM control circuit
P.N feed-through
prevention circuit
Oscillation
circuit
Figure 1
ON / OFF
L
−
+
Rev.2.3
VOUT
VSS
C
OUT
_00
+