参数资料
型号: XC9128D45CAR-G
厂商: Torex Semiconductor Ltd
文件页数: 8/26页
文件大小: 0K
描述: IC REG BOOST SYNC ADJ 1A MSOP10
标准包装: 1
类型: 升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 1.8 V ~ 5.3 V
输入电压: 0.8 V ~ 6 V
频率 - 开关: 1.2MHz
电流 - 输出: 1A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
包装: 标准包装
供应商设备封装: 10-MSOP
产品目录页面: 1439 (CN2011-ZH PDF)
其它名称: 893-1104-6
XC9128/XC9129 Series
■ TYPICAL APPLICATION CIRCUIT
<Output Voltage Setting>
Output voltage can be set by adding external split resistors.
Output voltage is determined by the following equation,
based on the values of R FB1 and R FB2 . The sum of R FB1 and R FB2 should normally be 500k Ω or less.
V OUT =0.45 × (R FB1 + R FB2 ) / R FB2
The value of C FB , speed-up capacitor for phase compensation, should be f ZFB = 1 / (2 x π x C FB1 x R FB1 ) which is in
the range of 10 kHz to 60 kHz. Adjustments are depending on application, inductance (L), load capacitance (C L ) and
dropout voltage.
[Example of calculation]
When R FB1 =270k Ω , R FB2 =43k Ω ,
V OUT1 = 0.45 × (270k+43k ) / 43k = 3.276V
[Typical example]
V OUT (V)
1.8
2.5
3.3
5.0
R FB1 (k Ω )
300
270
270
180
R FB2 (k Ω )
100
59
43
17.8
C FB (pF)
10
12
12
15
[External Components]
1.2MHz:
L : 4.7 μ H (LTF5022-4R7-LC TDK)
: 4.7 μ H (CDRH4D28C-4R7N SUMIDA)
CL1 : 22 μ F (ceramic)
CL2 : 10 μ F (ceramic)
CIN : 10 μ F (ceramic)
* C L1 should be selected in 10 μ F or higher.
Capacitance C L1 + C L2 is recommended 30 μ F or higher. (Ceramic capacitor compatible)
If C L1 is lower than 10 μ F, operation may be unstable.
In case of the usage C L1 + C L2 < 30 μ F, output ripple may increase so that we recommend that you fully
check actual performance on the board.
* If using Tantalum or Electrolytic capacitors please be aware that ripple voltage will be higher due to the larger
ESR (Equivalent Series Resistance) values of those types of capacitors. Please also note that the IC’s
operation may become unstable with such capacitors so we recommend that you fully check actual
performance.
8/26
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