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參數(shù)資料
| 型號： | R5210N20A-TR |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.7 A SWITCHING REGULATOR, 960 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | 1.30 MM HEIGHT, SOT-23, 6 PIN |
| 文件頁數(shù)： | 9/13頁 |
| 文件大小： | 136K |
| 代理商： | R5210N20A-TR |
12345
Rev. 1.11
- 5 -
VD part
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
-VDET
VD Detector Threshold
4.095
4.200
4.305
V
-VDET/
T
VD Detector Threshold
Temperature Coefficient
-40
°C ≤ Topt ≤ 85°C
±100
ppm
/
°C
VHYS
Hysteresis Range
-VDET
×0.05
V
tpLH
VD Output Delay Time for Release
5
10
20
ms
IDOUTL
VDOUT ”L” Output Current
VIN=2.0V, VDOUT=0.1V
2
7
15
mA
n TYPICAL APPLICATION AND APPLICATION HINTS
l
R5210NXXXA
VOUT1
V
OUT2
VOUT2
IN
V DOUT
GND
V
OUT1
Lx
D
1
C1
C3
R1
L1
C2
VDOUT
V
Examples of Components
Inductor L1: LQH4C (Murata, 10
H) or LDR655312T (TDK)
Shottky Diode D1: RB491D (Rohm) or EP05Q03L (Nihon Inter), Pull-up Resistor R1: 50k
Capacitors: C1=10
F (Ceramic Capacitor) C2: 22F (Tantalum Capacitor) C3: 10F (Tantalum
Capacitor)
When you use these ICs, consider the following issues;
l 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 VIN 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 VOUT1. 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.
l Use a capacitor with a capacity of 10
F or more for VIN and GND, and with low ESR ceramic type. In terms
of V OUT1, use a capacitor with a capacity of 22
F or more, and with good high frequency characteristics
such as tantalum capacitors.
l Choose an inductor that has sufficiently small D.C. resistance and large allowable current and which is
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