参数资料
| 型号： | SC4501MLTRT |
| 厂商： | Semtech |
| 文件页数： | 1/21页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 2A 10MLPD |
| 标准包装： | 1 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 可调至 32V |
| 输入电压： | 1.4 V ~ 16 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.5MHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-VFDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 10-MLPD（3x3） |
| 其它名称： | SC4501MLDKR |
SC4501
2Amp, 2MHz Step-Up Switching
Regulator with Soft-Start
POWER MANAGEMENT
Description
The SC4501 is a high-frequency current-mode step-up
switching regulator with an integrated 2A power transis-
tor. Its high switching frequency (programmable up to
2MHz) allows the use of tiny surface-mount external pas-
sive components. Programmable soft-start eliminates high
inrush current during start-up. The internal switch is rated
at 32V making the converter suitable for high voltage ap-
plications such as Boost, SEPIC and Flyback.
Features
Low saturation voltage switch: 220mV at 2A
Constant switching frequency current-mode control
Programmable switching frequency up to 2MHz
Soft-Start function
Input voltage range from 1.4V to 16V
Output voltage up to 32V
Low shutdown current
Adjustable undervoltage lockout threshold
Small low-profile thermally enhanced packages
The operating frequency of the SC4501 can be set with an
external resistor. The ability to set the operating frequency
gives the SC4501 design flexibilities. A dedicated COMP
pin allows optimization of the loop response. The SC4501
is available in thermally enhanced 8-Pin MSOP and 10-pin
MLPD packages.
Applications
Flat screen LCD bias supplies
TFT bias supplies
XDSL power supplies
Medical equipment
Digital video cameras
Portables devices
White LED power supplies
Typical Application Circuit
VIN
5V
6
L1
5
D1
10BQ015
R1
174K
VOUT
12V, 0.7A
Efficiency
C1
2.2 μ F
OFF ON 3
8
IN SW
SHDN FB
SC4501
SS COMP
2
1
C2
10 μ F
95
90
10.5 μ H, 700KHz
4.7 μ H, 1.4MHz
C3
47nF
GND
4
ROSC
7
R4
R3
C4
C6
R2
20K
85
80
75
3.3 μ H, 2MHz
70
All Capacitors are Ceramic.
MSOP-8 Pinout
65
60
f / MHz
0.7
R 3 / K Ω
22.1
R 4 / K Ω
22.1
C 4 / pF
2200
C 6 / pF
-
L 1 / μ H
10.5 (Falco D08019)
55
50
V IN = 5V
V OUT = 12V
1.35
30.9
9.31
820
-
4.7 (Falco D08017)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
2
63.4
4.75
470
22
3.3 (Coilcraft DO1813P)
Load Current (A)
Figure 1(a). 5V to 12V Boost Converter.
Figure 1(b). Efficiencies of 5V to 12V Boost Converters at
700KHz, 1.4MHz and 2MHz.
Revision: March 24, 2011 5
October 25, 200
Rev.1
1
www.semtech.com
相关PDF资料 |
PDF描述 |
|---|---|
| SC4502HMLTRT | IC REG BOOST ADJ 1.4A 10MLPD |
| SC4503TSKTRT | IC REG BOOST ADJ 1.4A TSOT23-5 |
| SC4508AMLTRT | IC REG CTRLR BST INV PWM 12-MLPQ |
| SC4517AIMSTRT | IC REG BUCK ADJ 1.5A 8MSOP |
| SC4518HSETRT | IC REG BUCK 2A 8-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SC4501MSETRT | 功能描述:IC REG BOOST ADJ 2A 8MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:MIC23xxx HyperLight Load™ Regulators 标准包装:5,000 系列:HyperLight Load® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.8V 输入电压:2.7 V ~ 5.5 V PWM 型:混合物 频率 - 开关:4MHz 电流 - 输出:2A 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘，8-MLF? 包装:带卷 (TR) 供应商设备封装:8-MLF?（2x2） 产品目录页面:1094 (CN2011-ZH PDF) 其它名称:576-3303-2 |
| SC4501STDEVB | 制造商:Semtech Corporation 功能描述:EVALUATION BOARD 制造商:SEMTECH 功能描述:Eval Board for SC4501 Step-Up Switching Regulator |
| SC4502 | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:1.4Amp, 2MHz Step-Up Switching Regulator with Soft-Start |
| SC4502EVB | 制造商:SEMTECH 功能描述:Evaluation Board for SC4502 Series Step-up Switching Regulator |
| SC4502H | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:1.4Amp, 2MHz Step-Up Switching Regulator with Soft-Start |
发布紧急采购，3分钟左右您将得到回复。