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參數(shù)資料
| 型號： | R1234D281B |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | PWM/VFM Step-Down DC/DC CONVERTER with Synchronous Rectifier |
| 中文描述： | 脈寬調(diào)制/ VFM的降壓型DC / DC同步整流變換器 |
| 文件頁數(shù)： | 4/26頁 |
| 文件大?。?/td> | 876K |
| 代理商： | R1234D281B |
R1234D
PIN CONFIGURATIO
4
SON-8
8 7 6 5
1 2 3 4
5
6
7
8
4
3
2
1
Bottom View
Top View
PIN DESCRIPTION
Pin No
Symbol
Pin Description
1
V
IN
Voltage Supply Pin
2
PGND
Power Ground Pin
3
V
DD
Voltage Supply Pin
4
CE
Chip Enable Pin (active with "H")
5
V
OUT
/V
FB
Output/Feedback Pin
6
MODE
Mode changer Pin ("L"
=
PWM, "H"
=
VFM)
7
AGND
Analogue Ground Pin
8
L
X
L
X
Pin (CMOS)
* Tab in the parts have GND level. (They are connected to the reverse side of this IC.)
Do not connect to other wires or land patterns.
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
Unit
V
IN
V
IN
Supply Voltage
6.5
V
V
DD
V
DD
Pin Voltage
6.5
V
V
LX
L
X
Pin Voltage
0.3 to V
IN
+
0.3
0.3 to V
IN
+
0.3
0.3 to V
IN
+
0.3
0.3 to V
IN
+
0.3
0.8
V
V
CE
CE Pin Input Voltage
V
V
MODE
MODE Pin Input Voltage
V
V
FB
V
FB
Pin Input Voltage
V
I
LX
L
X
Pin Output Current
A
P
D
Power Dissipation (SON-8)
480
mW
Topt
Operating Temperature Range
40 to
+
85
55 to
+
125
°
C
°
C
Tstg
Storage Temperature Range
* )
For Power Dissipation, please refer to PACKAGE INFORMATION to be described.
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PDF描述 |
|---|---|
| R1234D291A | PWM/VFM Step-Down DC/DC CONVERTER with Synchronous Rectifier |
| R1234D291B | PWM/VFM Step-Down DC/DC CONVERTER with Synchronous Rectifier |
| R1234D301A | PWM/VFM Step-Down DC/DC CONVERTER with Synchronous Rectifier |
| R1234D301B | PWM/VFM Step-Down DC/DC CONVERTER with Synchronous Rectifier |
| R1234D311A | PWM/VFM Step-Down DC/DC CONVERTER with Synchronous Rectifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R1234D291A | 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 |
| R1234D291B | 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 |
| R1234D301A | 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 |
| R1234D301B | 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 |
| R1234D311A | 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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