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參數(shù)資料
| 型號： | R5210D001C |
| 英文描述： | SMPS Controller |
| 中文描述： | 開關(guān)電源控制器 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 209K |
| 代理商： | R5210D001C |
12345
Rev. 1.12 - 5 -
VD part
Symbol
-V
DET
-V
DET
/
T
V
HYS
Item
Conditions
Min.
4.095
Typ.
4.200
±
100
Max.
4.305
Unit
V
ppm
/
°
C
V
VD Detector Threshold
VD Detector Threshold
Temperature Coefficient
Hysteresis Range
-40
°
C
≤
Topt
≤
85
°
C
-V
DET
×
0.05
10
7
tp
LH
I
DOUTL
VD Output Delay Time for Release
V
DOUT
”L” Output Current
5
2
20
15
ms
mA
V
IN
=2.0V, V
DOUT
=0.1V
I
TYPICAL APPLICATION AND APPLICATION HINTS
G
R5210NXXXC
V
OUT1
V
OUT2
V
OUT2
IN
V
DOUT
GND
V
OUT1
Lx
D
1
C1
C3
R1
L1
C2
V
DOUT
V
Examples of Components
Inductor L1: LQH4C (Murata, 10
μ
H) or LDR655312T (TDK)
Shottky Diode D1: RB491D (Rohm) or EP05Q03L (Nihon Inter),
Capacitors: C
1=
10
μ
F (Ceramic Capacitor) C
2
: 22
μ
F (Tantalum Capacitor) C3: 10
μ
F (Tantalum
Capacitor)
Pull-up Resistor R1: 50k
When you use these ICs, consider the following issues;
G
Set external components as close as possible to the IC and minimize the connection between the
components
and the IC. In particular, a capacitor should be connected to between V
IN
and GND with the
minimum connection. Make sufficient grounding, and reinforce supplying. A large switching current flows
through the connection of power
supply, an inductor and the connection of V
OUT1.
If the impedance of the
connection of power supply or ground is high, the
voltage level of power supply of the IC fluctuates with the
switching current. This may cause unstable operation of
the IC.
G
Use a capacitor with a capacity of 10
μ
F or more for V
IN
and GND, and with low ESR ceramic type. In terms
of V
OUT1
, use a capacitor with a capacity of 22
μ
F or more, and with good high frequency characteristics such
as tantalum capacitors.
G
Choose an inductor that has sufficiently small D.C. resistance and large allowable current and which is hard
to reach magnetic saturation. If the value of inductance of an inductor is extremely small, the I
LX,
which flows
through Lx transistor and an inductor, may exceed the absolute maximum rating at the maximum loading.
Use an inductor with appropriate inductance.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| R5210N001C-TR | SMPS Controller |
| R5210XXXXC | Power Management ICs |
| R5310L001A | Multiple Regulator Circuit |
| R5310LXXXX | Power Management ICs |
| R5440N2XXA | Power Management ICs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R5210N001C-TR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SMPS Controller |
| R5210X | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Step-down DC/DC Converter with VR and Reset |
| R5210XXXXC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Power Management ICs |
| R5212D | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Step-down DC/DC Converter with VR and Reset |
| R5212D011A | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Step-down DC/DC Converter with VR and Reset |
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