參數(shù)資料
型號: S-8340B00AFT-T2-U
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, 690 kHz SWITCHING FREQ-MAX, PDSO8
封裝: HALOGEN FREE AND LEAD FREE, TSSOP-8
文件頁數(shù): 12/55頁
文件大?。?/td> 740K
代理商: S-8340B00AFT-T2-U
STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8340/8341 Series
Rev.4.0_00
Seiko Instruments Inc.
2
Block Diagrams
(1) S-8340/8341 Series A and C Types (Output Voltage Fixed Output Type)
CS
RS
R2
R1
CC
VSS
VOUT
VOUT
SD
CL
ON/OFF
VDD
L
EXT
Shutdown
circuit
VIN
CVREF
CVREF
CSS
CSS
Nch Power
MOS FET
120 mV
RSENSE
SENSE
PWM comparator
Error amplifier
VREF =1.0 V
+
PWM, PW M/PFM
switching control
circuit
Triangular wave
oscillation circuit
Phase
IC internal power
compensation
Soft-start
circuit
Voltage/current
reference
circuit
supply
Figure 1
(2) S-8340/8341 Series B and D Types (Output Voltage External Setting Type)
CS
RS
RFB2
RFB1
CFB
VSS
VOUT
FB
SD
CL
ON/OFF
VDD
L
EXT
VIN
CVREF
CVREF
CSS
CSS
Nch Power
MOS FET
120 mV
RSENSE
SENSE
PWM comparator
VREF =1.0 V
+
Triangular wave
oscillation circuit
Phase
compensation
circuit
IC internal power
supply
Error amplifier
PWM, PW M/PFM
switching control
circuit
Shutdown
circuit
Soft-start
circuit
Voltage/current
reference
Figure 2
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