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| 型号： | ISL9103IRUWZ-T |
| 厂商： | Intersil |
| 文件页数： | 12/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 1.2V .5A 6UTDFN |
| 产品培训模块： | Patient Monitoring and Diagnostic Equipment Solutions |
| 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： | 1.2V |
| 输入电压： | 2.7 V ~ 6 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 2.4MHz |
| 电流 - 输出： | 500mA |
| 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-UFDFN |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 6-UTDFN（1.6x1.6） |
ISL9103, ISL9103A
For adjustable output versions, C3 (shown in Figure 21) is
highly recommended for improving stability and achieving
better transient response.
Table 2 provides the recommended component values for
some output voltage options.
TABLE 2. RECOMMENDED ISL9103, ISL9103A ADJUSTABLE
OUTPUT VERSION CIRCUIT CONFIGURATION vs
V OUT
Layout Recommendation
The PCB layout is a very important converter design step to
make sure the designed converter works well, especially
under the high current high switching frequency condition.
For ISL9103, ISL9103A, the power loop is composed of the
output inductor L, the output capacitor C OUT , the SW pin and
the PGND pin. It is necessary to make the power loop as
small as possible and the connecting traces among them
VOUT
(V)
0.8
1.0
1.2
1.5
1.8
2.5
2.8
3.3
L
(μ H )
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
C2
( μ F)
10
10
10
10
10
10
10
10
R1
(k Ω)
0
44.2
80.6
84.5
100
100
100
102
C3
(pF)
N/A
100
47
47
47
47
47
47
R2
(k Ω)
N/A
178
162
97.6
80.6
47.5
40.2
32.4
should be direct, short and wide; the same type of traces
should be used to connect the VIN pin, the input capacitor
C IN and its ground.
The switching node of the converter, the SW pin, and the
traces connected to this node are very noisy, so keep the
voltage feedback trace and other noise sensitive traces
away from these noisy traces.
The input capacitor should be placed as close as possible to
the VIN pin. The ground of the input and output capacitors
should be connected as close as possible as well. In
addition, a solid ground plane is helpful for EMI performance.
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
12
FN6828.2
November 24, 2009
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