S-8353A20MC-IQFT2X Datasheet, PDF (23/49 Pages) Seiko Instruments Inc – BUILT-IN TRANSISTOR SWITCHING REGULATOR

STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR
Rev.3.0_01
S-8353/8354 Series
(3) S-8353DxxMC, S-8353JxxMC, S-8354DxxMC, S-8354JxxMC
L
V_IN C_IN
+
−
CONT
SD
VDD
Oscillation circuit
IC internal
power
supply
PWM control circuit
or PWM / PFM
+
switching control
−
circuit
Soft start built-in
reference power
supply
Phase
compensating
circuit
C_C
R_A
VOUT
VSS
+
− ^CL
R_B
Remark The power supply for the IC chip is from the VOUT pin.
Figure 15
Caution The Above connection diagram will not guarantee successful operation. Perform through
evaluation using the actual application to set the constant.
23