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参数资料
| 型号： | FAN5350MPX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 8/15页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 1.82V 0.6A 6MLP |
| 标准包装： | 3,000 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 1.82V |
| 输入电压： | 2.7 V ~ 5.5 V |
| 频率 - 开关： | 3MHz |
| 电流 - 输出： | 600mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-MLP |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 6-MLP（3x3） |
| 配用： | FEB179-ND - BOARD EVAL FOR FAN5350 WLCSP FEB178-ND - BOARD EVAL FOR FAN5350 MLP |
PCB Layout Guidelines
For the bill of materials of the FAN5350 evaluation
board, see Table 1. There are only three external
components: the inductor and the input and output
capacitors. For any buck switcher IC, including the
FAN5350, it is always important to place a low-ESR
input capacitor very close to the IC, as shown in Figure
7. That ensures good input decoupling, which helps
ensures that the control sections of the IC do not
behave erratically due to excessive noise. This reduces
switching cycle jitter and ensures good overall
performance. It is not considered critical to place either
the inductor or the output capacitor very close to the IC.
There is some flexibility in moving these two
components further away from the IC.
reduce the noise appearing at the output terminals and
Table 2. FAN5350 Evaluation Board Bill of Materials (optional parts are installed by request only)
Description
1.2 μ H, 1.8A, 55m Ω
Qty.
Ref.
Vendor
TOKO
Part Number
1117AS-1R2M
Inductor
1.3 μ H, 1.2A, 90m Ω
1
L1
FDK
MIPSA2520D1R0
1.5 μ H, 1.3A
Taiyo Yuden
CBC3225T15MR
Capacitor 4.7 μ F, ± 10%, 6.3V, X5R, 0603
IC DC/DC Regulator in CSP, 5 bumps
Load Resistor (Optional)
2
1
1
C IN ,C OUT
U1
R LOAD
MURATA
Fairchild
Any
GRM39 X5R 475K 6.3
FAN5350UCX
Feedback Loop
One key advantage of the non-linear architecture is that
there is no traditional feedback loop. The loop response
to changes in V OUT is essentially instantaneous, which
explains its extraordinary transient response. The
absence of a traditional, high-gain compensated linear
loop means that the FAN5350 is inherently stable over
a wide range of L OUT and C OUT .
L OUT can be reduced further for a given application,
provided it is confirmed that the calculated peak current
for the required maximum load current is less than the
minimum of the closed-loop current limit. The
advantage is that this generally leads to improved
transient response, since a small inductance allows for
a much faster increase in current to cope with any
sudden load demand.
The inductor can be increased to 2.2μH; but, for the
same reason, the transient response gets slightly
degraded. In that case, increasing the output capacitor
to 10μF helps significantly.
Figure 7. The FAN5350 Evaluation Board PCB (CSP)
? 2007 Fairchild Semiconductor Corporation
FAN5350 Rev. 1.0.5
8
www.fairchildsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| FAN5350UCX | 功能描述:直流/直流开关转换器 3MHz 600mA DC/DC Buck Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| FAN5353 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:3MHz, 3A Synchronous Buck Regulator |
| FAN5353MPX | 功能描述:直流/直流开关调节器 3MHz, 3a TinyBuck Sync Buck Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| FAN5354 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:3MHz, 3A Synchronous Buck Regulator |
| FAN5354_11 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:3MHz, 3A Synchronous Buck Regulator |
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