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参数资料
| 型号： | RH5RI641B-T1 |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 稳压器 |
| 英文描述： | 0.25 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PSSO3 |
| 封装： | SOT-89, 3 PIN |
| 文件页数： | 24/24页 |
| 文件大小： | 179K |
| 代理商： | RH5RI641B-T1 |
8
RH5RI303B
Symbol
Item
VOUT
Output Voltage
VIN
Input Voltage
Vstart
Start-up Voltage
Vhold
Hold-on Voltage
η
Efficiency
IIN1
Input Current 1
IIN2
Input Current 2
ILX
Lx Switching Current
ILXleak
Lx Leakage Current
IEXTH
EXT “H” Output Current
IEXTL
EXT “L” Output Current
VCEH1
CE “H” Level 1
VCEL1
CE “L” Level 1
VCEH2
CE “H” Level 2
VCEL2
CE “L” Level 2
ICEH
CE “H” Input Current
ICEL
CE “L” Input Current
fosc
Maximum Oscillator
Frequency
Maxdty
Oscillator Duty Cycle
VLXlim
VLX Voltage Limit
Conditions
MIN.
TYP.
MAX.
Unit
Note
2.925
3.000
3.075
V
8V
IOUT=1mA,VIN:0
→2V
0.8
0.9
V
IOUT=1mA,VIN:2
→0V
0.7
V
70
80
%
To be measured at VIN
48
A
at no load
To be measured at VIN
25
A
VIN=3.5V
VLX=0.4V
60
mA
VLX=6V,VIN=3.5V
0.5
A
VEXT=VOUT–0.4V
–1.5
mA
VEXT=0.4V
1.5
mA
VOUT
≥1.5V
VOUT–0.4
V
VOUT
≥1.5V
0.4
V
0.8V
≤VOUT<1.5V
VOUT–0.1
V
0.8V
≤VOUT<1.5V
0.1
V
CE=3V
0.5
A
CE=0V
– 0.5
A
80
100
120
kHz
on (VLX “L” )side
65
75
85
%
Lx Switch on
0.65
0.8
1.0
V
Note
VOUT=3.0V
Unless otherwise provided, VIN=1.8V, VSS=0V, IOUT=10mA, Topt=25C, and use External Circuit of Typical
Application (FIG. 3).
(Note) ILX is gradually increased by the external inductor after Lx Switch is turned ON. In accordance with the increase of ILX, VLX is also increased.
When VLX reaches VLXlim, Lx Switch is turned OFF by Lx Switch Protection Circuit. The time period from the time at which VLX reaches VLXlim to
the time at which Lx Switch is turned OFF is about 3s.
RH5RI
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