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參數(shù)資料
| 型號(hào)： | R1230D181B-TL |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier |
| 中文描述： | 0.8 A SWITCHING REGULATOR, 920 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 0.90 MM HEIGHT, THIN, SON-8 |
| 文件頁數(shù)： | 8/20頁 |
| 文件大小： | 881K |
| 代理商： | R1230D181B-TL |
Rev. 1.12 - 8 -
I
TYPICAL APPLICATION AND TECHNICAL NOTES
1) Fixed Output Voltage Type
C
IN
C
OUT
AGND
MODE
V
OUT
CE
V
DD
PGND
Lx
V
IN
LOAD
L
V
OUT
L : 10
μ
H LQH3C100K54(Murata)
C
OUT
: 10
μ
F ECSTOJX106R(Panasonic)
C
IN
: 10
μ
F C3216JB0J106M(TDK)
2) Adjustable Output Voltage Type
Rb
Cb
C
IN
C
OUT
AGND
MODE
V
FB
CE
V
DD
PGND
L
X
V
IN
LOAD
R1
R2
L
V
OUT
L:
C
OUT
:
C
IN
:
10
μ
H LQH3C100K54 (Murata)
10
μ
F ECSTOJX106R (Panasonic)
10
μ
F C3216JB0J106M (TDK)
Standard value of the sum of Divider Resistors, R1+R2 is as much as 100k
.
Cb value for phase compensation depends on values of L, C, and R1. Refer to the technical notes.
If a ceramic capacitor is used as an output capacitor, add 0.2
or more resistance to compensate the ESR of the
capacitor.
When you use these ICs, consider the following issues;
G
Input same voltage into Power Supply pins, V
IN
and V
DD
. Set the same level as AGND and PGND.
G
When you control the CE pin and MODE pin by another power supply, do not make its "H" level more than the
voltage level of V
IN
/
V
DD
pin.
G
Set external components such as an inductor, C
IN
, C
OUT
as close as possible to the IC, in particular, minimize the
wiring to V
IN
pin and PGND pin.
G
At stand by mode, (CE=”L”), the Lx output is Hi-Z, or both P-channel transistor and N-channel transistor of Lx pin
turn off.
G
Use an external capacitor C
OUT
with a capacity of 10
μ
F or more, and with good high frequency characteristics
such as tantalum capacitors.
G
At VFM mode, (MODE=”H”), Latch protection circuit does not operate.
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| R1230D181B-TR | PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier |
| R1230D181A-TR | PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier |
| R1230D181C-TL | INDUCTOR 39NH 5% FIXED SMD |
| R1230D181C-TR | PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R1230D181B-TR | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier |
| R1230D181C | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier |
| R1230D181C-TL | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier |
| R1230D181C-TR | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier |
| R1230D181D | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier |
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