s-8533a60aft-tb-g Seiko Instruments Inc., s-8533a60aft-tb-g Datasheet - Page 2

• Manufacturer Part Number: s-8533a60aft-tb-g
• Description: Step-down, Synchronous Pwm Control Switching Regulator Controller
• Manufacturer: Seiko Instruments Inc.

2
STEP-DOWN, SYNCHRONOUS PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8533 Series
Block Diagram
Remark All the diodes in the figure are parasitic diodes.
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
+