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參數(shù)資料
| 型號： | R1234D301B |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | PWM/VFM Step-Down DC/DC CONVERTER with Synchronous Rectifier |
| 中文描述： | 脈寬調制/ VFM的降壓型DC / DC同步整流變換器 |
| 文件頁數(shù)： | 22/26頁 |
| 文件大小： | 876K |
| 代理商： | R1234D301B |
R1234D
12) UVLO Threshold vs. Temperature
22
13) CE Input Voltage vs. Temperature
14) Mode Input Voltage vs. Temperature
1.8
2.3
2.1
1.9
2.2
2.0
Temperature Topt(
°
C)
U
(
V
)
-40 -25
50
75
0
85
25
UVLO Threshold Voltage
UVLO Released Voltage
0
1.6
0.8
0.2
1.2
0.4
1.0
1.4
0.6
Temperature Topt(
°
C)
C
V
C
(
V
)
CE Input Voltage(
V
) "L"
CE Input Voltage(
V
) "H"
-40 -25
50
75
0
85
25
15)
Maximum Duty Cycle at VFM Mode vs. Temperature
16) Lx Transistor On Resistance vs. Temperature
0
1.6
0.8
0.2
1.2
0.4
1.0
1.4
0.6
Temperature Topt(
°
C)
M
V
M
(
V
)
MODE Input Voltage
"L"
MODE Input Voltage
"H"
-40 -25
50
75
0
85
25
50
80
70
55
60
75
65
Temperature Topt(
°
C)
V
D
V
(
%
)
-40 -25
50
75
0
85
25
17) Lx Limit Voltage vs. Temperature
0
1.00
0.25
0.50
0.75
Temperature Topt(
°
C)
O
O
(
)
NchTr
PchTr
-40 -25
50
75
0
85
25
0.10
0.40
0.30
0.15
0.20
0.35
0.25
Temperature Topt(
°
C)
L
V
V
L
(
V
)
-40 -25
50
75
0
85
25
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PDF描述 |
|---|---|
| R1234D311A | PWM/VFM Step-Down DC/DC CONVERTER with Synchronous Rectifier |
| R1234D311B | PWM/VFM Step-Down DC/DC CONVERTER with Synchronous Rectifier |
| R1234D321A | PWM/VFM Step-Down DC/DC CONVERTER with Synchronous Rectifier |
| R1234D321B | PWM/VFM Step-Down DC/DC CONVERTER with Synchronous Rectifier |
| R1234D331A | PWM/VFM Step-Down DC/DC CONVERTER with Synchronous Rectifier |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| R1234D311B | 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 |
| R1234D321A | 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 |
| R1234D321B | 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 |
| R1234D331A | 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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