参数资料
型号: S-8521C25MC-BTKT2G
元件分类: 稳压器
英文描述: 0.05 A SWITCHING CONTROLLER, 72 kHz SWITCHING FREQ-MAX, PDSO5
封装: LEAD FREE, SOT-23, 5 PIN
文件页数: 23/44页
文件大小: 511K
代理商: S-8521C25MC-BTKT2G
STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Rev.9.0_00
S-8520/8521 Series
Seiko Instruments Inc.
3
Block Diagrams
1.
S-8520 Series
VOUT
VSS
L
SD
COUT
VON/OFF
______
+
VIN
Tr
EXT
VIN
CIN
+
Oscillation
circuit
PWM control
circuit
Reference voltage
source with soft-start
+
ON/OFF
______
Remark
All the diodes in the figure are parasitic diodes.
Figure 1
2.
S-8521 Series
VOUT
VSS
L
SD
COUT
+
VIN
Tr
EXT
VIN
CIN
+
+
VON/OFF
______
ON/OFF
______
Oscillation
circuit
PWM / PFM switching
control circuit
Reference voltage
source with soft-start
Remark
All the diodes in the figure are parasitic diodes.
Figure 2
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