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參數資料
| 型號： | SC4524SETRT |
| 廠商： | Semtech Corporation |
| 英文描述： | Programmable Frequency, 2A Output 30V Step-Down Switching Regulator |
| 中文描述： | 可編程頻率，第2A輸出30V的降壓開關穩壓器 |
| 文件頁數： | 1/21頁 |
| 文件大小： | 1019K |
| 代理商： | SC4524SETRT |
1
www.semtech.com
SC4524
Programmable Frequency, 2A Output
30V Step-Down Switching Regulator
POWER MANAGEMENT
Description
Revision: December 30th, 2006
Features
Applications
XDSL and Cable Modems
Set-top Boxes
Point of Load Applications
CPE Equipment
DSP Power Supplies
Disk Drives
Typical Application Circuit
Up to 1.5 MHz Programmable Switching Frequency
2.3A Integrated Switch
Wide Input Voltage Range 2.8V to 30V
Peak Current-Mode Control with Cycle-by-Cycle
Current Limiting
Hiccup Overload Protection
Soft-Start and Enable
Thermal Shutdown
Thermally Enhanced 8-Pin SOIC Package
Fully WEEE and RoHS Compliant
The SC4524 is an adjustable frequency peak current-
mode step-down switching regulator with an integrated
2.3A, 30V switch. The SC4524 can be programmed up
to 1.5MHz. This allows the use of small inductor and
ceramic capacitors, resulting in very compact power
supplies. The SC4524 is suitable for next generation XDSL
modems, set-top boxes and point of load applications.
The SC4524 uses peak current-mode PWM control for
ease of compensation. Cycle-by-cycle current limit and
hiccup overload protection reduce power dissipation
during overload. Combined soft start and enable pin not
only eliminates output start up overshoot but also allows
power sequencing.
The SC4524 is available in SOIC-8 EDP package.
SC4524
GND
IN
SW
BST
L1
4.7 H
C2
0.1 F
SS
COMP
ROSC
FB
D2
20BQ030
5.49k
R2
R1
22.1k
22nF
C6
22pF
R5
15.4k
C5
470pF
L1: Coiltronics FP3-4R7
OUT
5V/2A
D1
1N4148
24V
C1: Murata GRM21BR60J226M
C3: Murata GRM32ER71H106K
C3
10 F
17.4k
R3
C7
V
IN
C1
22 F
Efficiency
50
55
60
65
70
75
80
85
90
0.0
0.5
1.0
1.5
2.0
Load Current (A)
E
Figure 1. 1MHz 24V to 5V/2A Step-down Converter.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| SC4525A | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:28V 3A Step-Down Switching Regulator |
| SC4525AEVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:28V 3A Step-Down Switching Regulator |
| SC4525ASETRT | 功能描述:IC REG BUCK 3A 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 標準包裝:20 系列:SIMPLE SWITCHER® 類型:降壓（降壓） 輸出類型:固定 輸出數:1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關:52kHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應商設備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12 |
| SC4525C | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:28V 3A Step-Down Switching Regulator Thermal Shutdown |
| SC4525CSETRT | 功能描述:IC REG BUCK ADJ 3A 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 標準包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數:1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關:2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應商設備封裝:6-SON（1.45x1） 產品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
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