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參數(shù)資料
| 型號(hào)： | SC2440TETRT |
| 廠商： | Semtech Corporation |
| 英文描述： | 2.5 MHz Dual Switching Regulator with Integrated 2A Switches |
| 中文描述： | 2.5 MHz雙開關(guān)穩(wěn)壓器集成甲開關(guān) |
| 文件頁數(shù)： | 24/26頁 |
| 文件大?。?/td> | 643K |
| 代理商： | SC2440TETRT |
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24
2005 Semtech Corp.
www.semtech.com
SC2440
POWER MANAGEMENT
Typical Application Circuits
C15
4.7
μ
F
SC2440
GND
SS2
IN
SW1
FB2
ROSC
COMP2
C9
10pF
R7
11.8K
BOOST1
C1
10
μ
F
BOOST2
SW2
L1
1.8
μ
H
C2
0.1
μ
F
VIN
L2
1
μ
H
C4
0.1
μ
F
PGOOD2
SS1
SYNC
PGOOD1
COMP1
FB1
C3
22
μ
F
D1
D2
UPS120
R8
100K
R9
12.1K
OUT1
2.5V/2A
R10
4.02K
R11
R3
R2
R1
30.1K
C7
22nF
C10
22nF
C8
470pF
R5
14.7K
C5
470pF
D4
L1 & L2: Sumida CR43
OUT2
0.8V/2A
D3
BAT-54
5V
C6
10pF
30.1K
Figure 18(a). Producing an Output Lower than FB Voltage. 1.5MHz 5V to 2.5V and 0.8V Step-down Converter
R
3
is a pre-load to shunt the current from R
10
and R
11
before PGOOD1 releases SS2.
Figure 18(b). V
IN
Start-up Transient (I
OUT1
= I
OUT2
= 1A).
2ms/div
CH1
CH2
CH3
CH4
Load Regulation
-2.0
-1.5
-1.0
-0.5
0.0
0.0
0.5
1.0
1.5
2.0
Load Current (A)
P
CH1 : OUT1 Voltage, 0.5V/div
CH2 : OUT2 Voltage, 1V/div
CH3 : SS2 Voltage, 1V/div
CH4 : PGOOD2, 1V/div
OUT1
OUT2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SC2441A | 1.8V to 20V Input 2-Phase Synchronous Step-down Controllers with Step-up Converter |
| SC2441AEVB | 1.8V to 20V Input 2-Phase Synchronous Step-down Controllers with Step-up Converter |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC2441 | 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 |
| SC2441A | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:1.8V to 20V Input 2-Phase Synchronous Step-down Controllers with Step-up Converter |
| SC2441A_09 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:1.8V to 20V Input 2-Phase Synchronous Step-down Controllers with Step-up Converter |
| SC2441AEVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:1.8V to 20V Input 2-Phase Synchronous Step-down Controllers with Step-up Converter |
| SC2441ATETRT | 制造商:Semtech Corporation 功能描述: |
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