参数资料
型号: SC493ULTRT
厂商: Semtech
文件页数: 22/28页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM MLPQ-20
标准包装: 1
系列: EcoSpeed®, SmartDrive™
PWM 型: 控制器
输出数: 1
频率 - 最大: 1MHz
电源电压: 3 V ~ 5.5 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 20-MLPQ
包装: 标准包装
其它名称: SC493ULTRTDKR
SC493
Definition of Registers and Bits (continued)
Switching and Status Control — Register 1
Name
Bit
Description
Description
This bits controls whether the output is enabled or not.
ENSW
01h[0]
Enable Switching
0: The output is disabled, both high side and low side switches are off.
1: power-on delay and soft start process can start when this bit is 1 and the EN pin is pulled
high.
CLF
EnIntLd
01h[1]
01h{2}
Clear Fault Status
Enable Internal Load
Set to clear fault indicator flags (UVO, OVO, OT, ILIM, BO, & DNS). This bit is self clearing.
Set to enable internal pull down on VOUT when slewing down.
Timing Control — Registers 2 and 3
These registers provide software control over key timing parameters of the controller: frequency setting (Freq), Power-
On Delay (POD) time, Soft-Start Time (SST) setting, power save (PSV) mode control, and minimum switching frequency
in Ultrasonic Power Save (UPSV) mode. The details of each setting are listed in the table below.
Name
Bit
Definition
Description
2 bits that control the switching frequency from 250kHz to 1MHz.
Freq1
Freq0
02h
[1:0]
Frequency Setting
00 : 250kHz
01 : 500kHz
10 : 750kHz
11 : 1MHz
3 bits that control the power-on delay from 0μs to 16ms.
POD2
POD1
POD0
02h
[4:2]
Power-on Delay Time
000 : 0 μ s
001 : 250 μ s
010 : 500 μ s
011 : 1000 μ s
100 : 2m s
101 : 4 m s
110 : 8 m s
111 : 16ms
3 bits that control the soft start time from 250μs to 16ms.
SST2
SST1
SST0
03h
[4:2]
Soft Start Time Setting
000 : 250 μ s
001 : 500 μ s
010 : 1000 μ s
011 : 2m s
100 : 4ms
101 : 8ms
110 : 16ms
111 : 16ms
These bits control whether the device is permitted to enter power save when input, output,
and load conditions dictate. If permitted to enter power save, they also control what mode of
PSV1
PSV0
03h
[1:0]
Power Save Mode Control
power save the part can enter.
00 : PSAVE is disabled
01 : PSAVE enabled (low I Q , no ultrasonic mode)
10 : UPSAVE enabled (ultrasonic mode)
11 : PSAVE is disabled
22
相关PDF资料
PDF描述
SC553ISKTRT IC REG LDO ADJ .15A SOT-23-5
SC560GULTRT IC REG LDO 2.8V/1.5V .3A 8-MLPQ
SC630AULTRT IC REG SWITCHED CAP 3.3V 8MLPD
SC632AULTRT IC REG SWITCHED CAP 5V 8MLPD
SC805IMLTRT IC LI-ION BATT CHARGER 10-MLP
相关代理商/技术参数
参数描述
SC-4B 制造商:SYNERGY 制造商全称:SYNERGY MICROWAVE CORPORATION 功能描述:DIRECTIONAL COUPLER SURFACE MOUNT MODEL
SC4BR 功能描述:电缆组件 4BR Serial Cable RoHS:否 制造商:Molex 产品:Power Assemblies 类型:Cable Assembly 连接器端口 A:No Connector 连接器端口 A 管脚计数:4 连接器端口 B:No Connector 连接器端口 B 管脚计数: 型式:Male 线规 - 美国线规(AWG):20, 28 长度:0.305 m 颜色:Black, Red
SC4F4AD 制造商:OMRON AUTOMATION AND SAFETY 功能描述:FA CONNECTOR 4-PIN AC 制造商:OMRON Industrial Automation 功能描述:FA CONNECTOR 4-PIN AC 制造商:Omron Corporation 功能描述:
SC-4F4AD 制造商:OMRON AUTOMATION AND SAFETY 功能描述:FA CONNECTOR 4-PIN AC 制造商:OMRON Industrial Automation 功能描述:FA CONNECTOR 4-PIN AC 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:FA CONNECTOR, 4-PIN, AC
SC4F4D 制造商:OMRON AUTOMATION AND SAFETY 功能描述:CONN LIMIT SW DC BUILT-IN 4PIN