參數(shù)資料
型號(hào)： R1283Z1A-E2
廠商： RICOH COMPANY LTD
元件分類： 電源模塊
英文描述： DC-DC REG PWR SUPPLY MODULE
封裝： 1.50 X 2.40 MM, WLCSP-11
文件頁(yè)數(shù)： 21/22頁(yè)
文件大?。?/td> 416K
代理商： R1283Z1A-E2
R1283x
8
To reduce the noise of Feedback voltage
If the noise of the system is large, the output noise affects the feedback and the operation may be unstable.
In that case, resistor values, R1, R2, R4, and R5 should be set lower and make the noise into the feedback
pin reduce. Another method is set R3 and R6 . The appropriate value range is from 1k
to 5k.
Set a ceramic 1
F or more capacitor as C1B between VCC pin and GND. Set another 4.7F or more
capacitor between PVcc and GND as C1.
Set a ceramic 1
F or more capacitor between VOUT1 and GND, and between VOUT2 and GND for each as
C2 and C3.Recommendation value range is from 4.7
F to 22F.
Set a ceramic capacitor between VREF and GND as C4. Recommendation value range is from 0.1
F to
2.2
F.
Operation of Step-up DC/DC Converter and Output Current
Discontinuous Mode
ILxmax
ILxmin
Ton
Toff
T=1/fosc
Tf
IL
t
ILxmax
IL
ILxmin
Ton
Toff
T=1/fosc
t
Continuous Mode
＜
Current through L＞
＜
Basic Circuit＞
Inductor
Diode
CL
Lx Tr
VIN
VOUT
IOUT
IL1
IL2
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