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參數(shù)資料
| 型號(hào)： | SC415EVB |
| 廠商： | Semtech Corporation |
| 英文描述： | Dual Synchronous Buck Controller |
| 中文描述： | 雙同步降壓控制器 |
| 文件頁數(shù)： | 1/30頁 |
| 文件大小： | 942K |
| 代理商： | SC415EVB |
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POWER MANAGEMENT
Features
Oct 08, 2007
1
SC415
Dual Synchronous Buck Controller
VIN Range 3-25V
Outputs Adjustable from 0.75 to 5.25V,
or Preset Output Voltages:
VOUT1 = 1.8 or 1.5V
VOUT2 = 1.25 or 1.05V
Low Shutdown Power
Constant On-Time for Fast Dynamic Response
Adjustable Switching Frequency
Separated Frequencies for Minimal Switching
Interaction:
VOUT1 = up to 600kHz
VOUT2 = up to 720kHz
Power Save or Continuous Operation at Light Load
Adjustable Soft-start Rates for Each Output
Soft-Shutdown for Each Output
Over-Voltage and Under-Voltage Fault Protection
Cycle-by-Cycle Valley Current Limit
DC Current Sense Using Low-Side RDSON Sensing,
or RSENSE in Source of Low-Side MOSFET for Greater
Accuracy
Separate Power Good Outputs
Separate Enable/Power Save Inputs
3.1A Non-Overlapping Gate Drive
SmartDrive
TM
for High-Side MOSFET
MLP 4x4 24 Pin Package
Industrial Temperature Range
Applications
Notebook and Sub-Notebook Graphics
Voltage Controllers
Tablet PCs
Embedded Applications
Description
The SC415 is a versatile, constant on-time, pseudo fixed-
frequency, dual synchronous buck PWM controller
intended for notebook computers and other battery
operated portable devices. The SC415 contains all the
features needed to provide cost-effective control of two
independent switchmode power supplies.
The two DC outputs are adjustable from 0.75V to 5.25V.
Additional features for each output include cycle-by-
cycle current limit, voltage soft-start, under-voltage and
over-voltage protection, programmable over-current
protection, soft shutdown, selectable power save and
non-overlapping gate drive. The SC415 provides two
enable/power save inputs, two soft-start inputs, two
power good outputs and an on-time adjust input.
The constant on-time topology provides fast dynamic
response. The excellent transient response means that
SC415 based solutions require less output capacitance
than competing fixed-frequency converters. Switching
frequency is constant until a step in load or line voltage
occurs, at which time the pulse density and frequency
moves to counter the change in output voltage. After the
transient event, the controller frequency returns to steady
state operation. At light loads with power save enabled,
the SC415 reduces switching frequency for improved
efficiency.
2007 Semtech Corporation
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC415ML.TRT | 制造商:SEMTECH 功能描述:I.C. |
| SC415MLTRT | 制造商:Semtech Corporation 功能描述:Current Mode PWM Controller 1.8V/1.5V/1.25V/1.05V/0.75V to 5.25V 24-Pin MLPQ EP T/R |
| SC416 | 功能描述:音頻指示器及警報(bào)器 CONSTANT, 4-16VDC 2900HZ, CUL APPRVD RoHS:否 制造商:PUI Audio 產(chǎn)品:Indicators 聲壓級(jí):85 dB 音調(diào):Continuous 頻率:2300 Hz +/- 300 Hz 電壓額定值:5 VDC 電流額定值:30 mA 端接類型: 直徑:12 mm 安裝:Through Hole |
| SC4-1600/5A | 制造商:TE Connectivity 功能描述:SPLIT CORE CURRENT TRANSFORMER CASE 4 1600/5A |
| SC416EVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Dual Synchronous Buck Controller with Tracking Start-up/Shutdown |
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