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参数资料
| 型号： | MC34063SMDBKEVB |
| 厂商： | ON Semiconductor |
| 文件页数： | 11/15页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR MC34063SMDBK |
| 设计资源： | MC34063SMDBKEVB Gerber Files MC34063 Demo Brd Schematic MC34063 BOM |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 3.3V |
| 电流 - 输出： | 100mA |
| 输入电压： | 12V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 100kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MC34063 |
| 其它名称： | MC34063SMDBKEVBOS |
MC34063A, MC33063A, SC34063A, SC33063A, NCV33063A
Calculation
Step ? Up
Step ? Down
Voltage ? Inverting
in(min)
* V
* V sat
in
t on /t off
V out ) V F
V
in(min)
* V sat
V
V out ) V F
in(min) * V sat * V out
|V out| ) V F
V
ton
) 1
off
ton
) 1
off
ton
) 1
off
(t on + t off )
t off
t on
1
f
t on ) t off
t
(t on + t off ) ? t off
1
f
t on ) t off
t
(t on + t off ) ? t off
1
f
t on ) t off
t
(t on + t off ) ? t off
C T
4.0 x
10 ? 5
t on
4.0 x
10 ? 5
t on
4.0 x 10 ? 5 t on
off
off
I pk(switch)
2I
out(max)
t on
t
) 1
2I
out(max)
2I
out(max)
t on
t
) 1
R sc
0.3/I pk(switch)
0.3/I pk(switch)
0.3/I pk(switch)
pk(switch)
pk(switch)
L (min)
(V
I
in(min) * V sat)
t
on(max)
(V
in(min)
I
* V sat * V out)
pk(switch)
t
on(max)
(V
I
in(min) * V sat)
t
on(max)
pk(switch) on
ripple(pp)
off
C O
9
V
I outt on
ripple(pp)
I
8V
(t ) t
)
9
V
I outt on
ripple(pp)
V out ? Desired output voltage, |V out | + 1.25 1 ) R2
I out ? Desired output current.
V sat = Saturation voltage of the output switch.
V F = Forward voltage drop of the output rectifier.
The following power supply characteristics must be chosen:
V in ? Nominal input voltage.
R1
f min ? Minimum desired output switching frequency at the selected values of V in and I O .
V ripple(pp) ? Desired peak ? to ? peak output ripple voltage. In practice, the calculated capacitor value will need to be increased due to its
equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly affect the
line and load regulation.
NOTE: For further information refer to Application Note AN920A/D and AN954/D.
Figure 17. Design Formula Table
http://onsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC34063SMDINVEVB | 功能描述:电源管理IC开发工具 MC34063A EVAL BRD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MC34063U | 制造商:Motorola Inc 功能描述: 制造商:Motorola Inc 功能描述:1.5 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, CDIP8 |
| MC34064 | 制造商:MICROSEMI 制造商全称:Microsemi Corporation 功能描述:UNDERVOLTAGE SENSING CIRCUIT |
| MC34064D-005 | 功能描述:监控电路 4.59V UnderVoltage RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MC34064D-005G | 功能描述:监控电路 4.59V UnderVoltage Sensing Circuit RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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