参数资料
型号: MC34063ADRJRG4
厂商: Texas Instruments
文件页数: 8/23页
文件大小: 0K
描述: IC REG BUCK BOOST INV ADJ 8-SON
标准包装: 1,000
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: 1.55 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: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 8-WDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 8-SON 裸露焊盘(4x4)
SLLS636M – DECEMBER 2004 – REVISED JANUARY 2011
8
S Q
Q2
1
Q1
R
7
2
C T
V IN
25 V
R SC
0.33 ?
+
100 μ F
6
V CC
I pk
Oscillator
+
_ Comparator
1.25-V
Reference
Regulator
1N5819
3
C T
470 pF
L
220 μ H
5
4
R1
1.2 k ?
R2
3.8 k ?
C O
470 μ F
+
V OUT
5 V/500 mA
1.0 μ H
100 μ F
+
R1
V OUT + 1.25 (1 ) R2 )
Optional Filter
Figure 8. Step-Down Converter
TEST
Line regulation
Load regulation
Output ripple
Short-circuit current
Efficiency
Output ripple with optional filter
8
1
CONDITIONS
V IN = 15 V to 25 V, I O = 500 mA
V IN = 25 V, I O = 50 mA to 500 mA
V IN = 25 V, I O = 500 mA
V IN = 25 V, R L = 0.1 ?
V IN = 25 V, I O = 500 mA
V IN = 25 V, I O = 500 mA
8
1
RESULTS
12 mV ± 0.12%
3 mV ± 0.03%
120 mV PP
1.1 A
83.7%
40 mV PP
V OUT
R SC
7
2
V OUT
R SC
7
2
V IN
6
a) EXTERNAL npn SWITCH
V IN
6
b) EXTERNAL pnp SATURATED SWITCH
Figure 9. External Current-Boost Connections for I C Peak Greater Than 1.5 A
8
Copyright ? 2004 – 2011, Texas Instruments Incorporated
Product Folder Link(s): MC33063A MC34063A
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