参数资料
型号: MC33063APE4
厂商: Texas Instruments
文件页数: 10/23页
文件大小: 0K
描述: IC REG BUCK BOOST INV ADJ 8DIP
标准包装: 50
类型: 降压(降压),升压(升压),反相
输出类型: 可调式
输出数: 1
输出电压: 1.25 V ~ 40 V
输入电压: 3 V ~ 40 V
频率 - 开关: 100kHz
电流 - 输出: 1.5A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 通孔
封装/外壳: 8-DIP(0.300",7.62mm)
包装: 管件
供应商设备封装: 8-PDIP

SLLS636M – DECEMBER 2004 – REVISED JANUARY 2011
APPLICATION INFORMATION
CALCULATION
t on /t off
(t on + t off )
STEP UP
V out ) V F * V in(min)
V in(min) * V sat
1
f
t on ) t off
STEP DOWN
V out ) V F
V in(min) * V sat * V out
1
f
t on ) t off
VOLTAGE INVERTING
V out ) V F
V in * V sat
1
f
t on ) t off
t off
t on
t off
) 1
t on
t off
) 1
t on
t off
) 1
t on
t on ) t off * t off
t on ) t off * t off
t on ) t off * t off
C T
4
10 * 5
t on
4
10 * 5
t on
4
10 * 5 t on
I pk(switch)
2I out(max)
t on
t off
) 1
2I out(max)
2I out(max)
t on
t off
) 1
0.3
0.3
0.3
R SC
I pk(switch)
I pk(switch)
I pk(switch)
L (min)
C O
V in(min) * V sat
I pk(switch)
I out t on
9
V ripple(pp)
t on(max)
V in(min) * V sat * V out
I pk(switch)
I pk(switch) t on ) t off
8V ripple(pp)
t on(max)
V in(min) * V sat
I pk(switch)
I out t on
9
V ripple(pp)
t on(max)
1.25(1 ) R2 )
1.25(1 ) R2 )
* 1.25(1 ) R2 )
V out
R1
See Figure 6
R1
See Figure 8
R1
V sat = Saturation voltage of the output switch
V F = Forward voltage drop of the chosen output rectifier
The following power-supply parameters are set by the user:
V in = Nominal input voltage
V out = Desired output voltage
I out = Desired output current
f min = Minimum desired output switching frequency at the selected values of V in and I out
V ripple = Desired peak-to-peak output ripple voltage. The ripple voltage directly affects the line and load
regulation and, thus, must be considered. In practice, the actual capacitor value should be larger than the
calculated value, to account for the capacitor's equivalent series resistance and board layout.
10
Copyright ? 2004 – 2011, Texas Instruments Incorporated
Product Folder Link(s): MC33063A MC34063A
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