参数资料
| 型号： | SC192IMLTRT |
| 厂商： | Semtech |
| 文件页数： | 12/15页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 0.7A 10MLPD |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.75 V ~ 5.5 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 750kHz |
| 电流 - 输出： | 700mA |
| 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） |
| 产品目录页面： | 1357 (CN2011-ZH PDF) |
| 其它名称： | SC192IMLDKR |
SC192
POWER MANAGEMENT
Applications Information Cont.
Load Regulation at Vin = 3.6V
PRELIMINARY
I RMS = V OUT ? V IN - V OUT ?
I OUT
V IN
0.45
0.40
0.35
0.30
The worst case RMS ripple current occurs at a duty cycle
0.25
0.20
Vo = 1.8V
Vo = 2.5V
of 0.5 and its value at that point is
I OUT
2
.
0.15
0.10
0.05
Ceramic capacitors are recommended for input capaci-
0.00
1
20
40
60
80
100
200
300
400
500
600
tors because of their low ESR and high ripple current
capabilities. In addition, it is advised that the input ca-
pacitor be placed as close to the input pin of the IC as
possible.
100
Ouput Current (mA)
Efficiency at Vin = 5V
Layout Considerations
PCB layout is of utmost importance because the switch-
95
90
85
ing frequency is 750kHz with peak currents over 1A. A
careful layout will avoid potential stability and EMI prob-
lems. Traces should be as wide and as short as possible.
Keep the input capacitor as close to the package as pos-
80
75
70
65
60
Vo = 3.3V
sible. This will help minimize large loop areas. Keep the
power ground and analog ground separated and tie the
1
10
30
50 70 90
Load Current (mA)
200
400
600
two together at one common point. Notice the top cop-
per Gerber plot (see Page 8), pin 3 and pin 10 are tied
together under the package. Be aware of the high cur-
rent paths and avoid tying signal grounds to the high power
100
Efficiency at Vin = 3.6V
grounds where the signal paths might experience large
fluctuations in voltages as high currents pass though
copper traces.
95
90
85
80
Vo = 2.5V
Vo = 1.8V
1
10
30
50
70
90
200 400 600
Load Current (mA)
Line Regulation At Iout = 300mA
0.10
0.08
0.06
Vo = 1.8V
0.04
0.02
0.00
2.7
3.0
3.3
3.6
3.9
4.2
4.5
4.8
Input Voltage (Volts)
? 2007 Semtech Corp.
12
www.semtech.com
相关PDF资料 |
PDF描述 |
|---|---|
| SC194AMLTRT | IC REG BUCK ADJ 1A 10MLP |
| SC194BMLTRT | IC REG BUCK ADJ 1A 10MLP |
| SC195ULTRT | IC REG BUCK SYNC ADJ 0.5A 8MLPQ |
| SC196AMLTRT | IC REG BUCK SYNC 1.5A 10MLP |
| SC196ULTRT | IC REG BUCK SYNC ADJ 1.5A 10MLPD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SC194A | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:1A Synchronous Buck Converter with Integrated Power Devices |
| SC194AEVB | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:1A Synchronous Buck Converter with Integrated Power Devices |
| SC194AML.TRT | 制造商:Semtech Corporation 功能描述: |
| SC194AMLTRT | 功能描述:IC REG BUCK ADJ 1A 10MLP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:50 系列:- 类型:升压（升压） 输出类型:可调式 输出数:1 输出电压:5 V ~ 25 V 输入电压:2.3 V ~ 5.5 V PWM 型:电流模式 频率 - 开关:600kHz，1.2MHz 电流 - 输出:1A 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:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 包装:管件 供应商设备封装:8-MSOP |
| SC194B | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Selectable 3.6V/3.3V/3.0V/2.5V 1A Synchronous Buck Converter |
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