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參數(shù)資料
| 型號(hào)： | SC2441AEVB |
| 廠商： | Semtech Corporation |
| 英文描述： | 1.8V to 20V Input 2-Phase Synchronous Step-down Controllers with Step-up Converter |
| 中文描述： | 1.8V至20V的輸入2相同步降壓與升壓轉(zhuǎn)換器控制器 |
| 文件頁(yè)數(shù)： | 9/37頁(yè) |
| 文件大?。?/td> | 1024K |
| 代理商： | SC2441AEVB |
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9
2006 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
Block Diagram
SC2441A
Figure 4 Details of Soft-Start and Overload Hiccup Control Circuit
OL
(OVERLOAD)
0.5V/3.3V
S
Q
R
DSBL
FB
SS/EN
+
-
0.35V
+
0.8V
-
S
Q
R
UV = “1” IF VCC < 4.5V
SHDN = “1” IF SYNC/SHDN < 0.5V
TURN OFF
GATE DRIVES
RSS
VCC
SHDN
UV
TGON
FAULT
Soft-Start and
Overload
Hiccup Control
Figure 2
CSS
Q1
C1
C2
C3
L1
L2
HICCUP
DISABLE
10
μ
A
Figure 3. Step-up Converter Functional Diagram
FB3
SW3
COMP3
8
EA3
SLOPE
COMP
+
R
Q
S
PWM3
+
CLK
-
+
-
+
1.25V
+
-
ISEN3
ILIM3
+
-
I-LIMIT
Σ
26
27
7
RSENSE
PGND2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SC2441ATETRT | 1.8V to 20V Input 2-Phase Synchronous Step-down Controllers with Step-up Converter |
| SC2441 | Very Low Input Voltage 2-Phase Synchronous Step-down Controllers with Step-up Converter |
| SC2441EVB | Very Low Input Voltage 2-Phase Synchronous Step-down Controllers with Step-up Converter |
| SC2441ITSTRT | Very Low Input Voltage 2-Phase Synchronous Step-down Controllers with Step-up Converter |
| SC2442 | High Performance Wide Input Range Dual Synchronous Buck Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC2441ATETRT | 制造商:Semtech Corporation 功能描述: |
| SC2441EVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Very Low Input Voltage 2-Phase Synchronous Step-down Controllers with Step-up Converter |
| SC2441ITSTRT | 制造商:Semtech Corporation 功能描述:Controller IC |
| SC2442 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:High Performance Wide Input Range Dual Synchronous Buck Controller |
| SC2442H | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:High Performance Wide Input Range Dual Synchronous Buck Controller |
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