参数资料
型号: XC9243B08DDR-G
厂商: Torex Semiconductor Ltd
文件页数: 7/29页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 2A USP-10B
标准包装: 3,000
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 0.9 V ~ 6 V
输入电压: 2.7 V ~ 6 V
频率 - 开关: 2.4MHz
电流 - 输出: 2A
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-UFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: USP-10B
XC9242/XC9243
Series
■ TYPICAL APPLICATION CIRCUIT
● XC9242/XC9243 Series
External Components
1.2MHz
2.4MHz
L:
C IN1 :
C IN2
C L :
4.7 μ H(SLF7055T-4R7)
4.7 μ H(SPM6530T-4R7)
20 μ F (LMK212ABJ106KG 10V/10 μ F x2)
1 μ F (LMK107BJ105KA 10V/1 μ F x1)
20 μ F (LMK212ABJ106KG 10V/10 μ F x2)
L:
C IN1 :
C IN2
C L :
2.2 μ H(SLF7055T-2R2)
2.2 μ H(SPM6530T-2R2)
20 μ F (LMK212ABJ106KG 10V/10 μ F x2)
1 μ F (LMK107BJ105KA 10V/1 μ F x1)
20 μ F (LMK212ABJ106KG 10V/10 μ F x2)
<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
RFB1 and RFB2.
The sum of RFB1 and RFB2 should normally be 100k Ω or less.
Output voltage range is 0.9V~5.5V by a 0.8V (±2.0%)
reference voltage.
When input voltage (V IN ) ≦ setting output voltage, output voltage (V OUT ) can not output the power more than input voltage
(V IN ).
VOUT = 0.8 x (RFB1 + RFB2) / RFB2
The value of C FB , speed-up capacitor for phase compensation, should be f ZFB = 1 / (2 x π x CFB x RFB1) which is equal to 10kHz.
are required from 1kHz to 10kHz depending on the application, value of inductance (L), and value of load capacitance (C L ).
[Example of calculation]
When R FB1 =47k ? , R FB2 =15k ? , V OUT =0.8×(47k ? +15k ? ) / 15k ? =3.3V
When C FB =330pF, fzfb= 1/(2 ×π× 330pF × 47 k ? ) =10.26kHz
Adjustments
V OUT
(V)
1.0
1.2
1.5
1.8
R FB1
(k ? )
7.5
15
26
30
R FB2
(k ? )
30
30
30
24
C FB
(pF)
2000
1000
560
510
V OUT
(V)
2.5
3.0
3.3
5.0
R FB1
(k ? )
51
33
47
43
R FB2
(k ? )
24
12
15
8.2
C FB
(pF)
300
470
330
390
7/29
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