参数资料
| 型号： | ISL9106IRZ |
| 厂商： | Intersil |
| 文件页数： | 12/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 1.2A 10DFN |
| 标准包装： | 100 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 5.5 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.6MHz |
| 电流 - 输出： | 1.2A |
| 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： | 10-VFDFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 10-DFN（3x3） |
ISL9106
Input Capacitor Selection
The main function for the input capacitor is to provide
decoupling of the parasitic inductance and to provide filtering
function to prevent the switching current from flowing back to
the battery rail. A 10 μ F/6.3V ceramic capacitor (X5R or X7R)
is a good starting point for the input capacitor selection.
Output Voltage Setting Resistor Selection
The voltage divider resistors, R 2 and R 3 , as shown in Figure
23, set the desired output voltage value. The output voltage
can be calculated using Equation 2:
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.
The heat of the IC is mainly dissipated through the thermal
pad. Maximizing the copper area connected to the thermal
pad is preferable. In addition, a solid ground plane is helpful
for EMI performance.
V O = V FB ? ? 1 + ------- ?
? R 2 ?
? R 3 ?
(EQ. 2)
TABLE 1. ISL9106 CIRCUIT CONFIGURATION vs V OUT
VOUT (V) L ( μ H ) C2 (μ F) R2 (k Ω) C3 (pF) R3 (k Ω)
where V FB is the feedback voltage (typically it is 0.8V). The
current flowing through the voltage divider resistors can be
calculated as V O /(R 2 + R 3 ), so larger resistance is desirable
to minimize this current. On the other hand, the FB pin has
leakage current that will cause error in the output voltage
setting. The leakage current has a typical value of 0.1 μ A. To
minimize the accuracy impact on the output voltage, select
the R 3 no larger than 200k Ω .
C 3 (shown in Figure 23) is highly recommended to be added
for improving stability and achieving better transient
0.8
1.0
1.2
1.5
1.8
2.5
2.8
3.3
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
10
10
10
10
10
10
10
10
0
44.2
80.6
84.5
100
100
100
102
N/A
470
270
270
220
220
220
220
100
178
162
97.6
80.6
47.5
40.2
32.4
response. C 3 can be calculated using Equation 3:
C 3 = -----------------------------------------------------
1
2 × π × R 2 × 7.3kHz
(EQ. 3)
Table 1 provides the recommended component values for
some output voltage options.
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 ISL9106, 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 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. In order to make the output voltage regulate well
and avoid the noise couple from the power loop (especially
for SKIP mode operation), the SGND pin should be
connected with the PGND pin at the terminals of the load
and a star ground connection should be used.
12
FN6509.0
June 29, 2007
相关PDF资料 |
PDF描述 |
|---|---|
| ISL9107IRZ-T | IC REG BUCK SYNC ADJ 1.5A 8DFN |
| ISL9109IRZ-T | IC REG BUCK SYNC ADJ 1.5A 8DFN |
| ISL9110AIITNZ-T | IC VOLTAGE REGULATOR |
| ISL9111EH30Z-T | IC VOLTAGE REGULATOR |
| ISL9112IRT7Z-T7A | IC REG BUCK BOOST SYNC 5V 12TDFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL9106IRZ-T | 功能描述:IC REG BUCK SYNC ADJ 1.2A 10DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:1,000 系列:- 类型:降压（降压） 输出类型:可调式 输出数:1 输出电压:0.6 V ~ 4.5 V 输入电压:3 V ~ 5.5 V PWM 型:电流模式 频率 - 开关:3MHz 电流 - 输出:1.5A 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 供应商设备封装:6-LLP-EP（3x3） 产品目录页面:1300 (CN2011-ZH PDF) 其它名称:LM2831ZSDLM2831ZSDTR |
| ISL9106IRZ-TS2708 | 制造商:Intersil Corporation 功能描述:ITSISL9106IRZ-TS2708 INTELION / ATHEROS |
| ISL9107 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:1.5A 1.6MHz Low Quiescent Current High Efficiency Synchronous Buck Regulator |
| ISL9107EVAL1Z | 功能描述:电源管理IC开发工具 ISL9107 EVALUATION BOARD 1 - RoHS COMPLIANT - DFN RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| ISL9107IRZ-T | 功能描述:直流/直流开关转换器 W/ANNEAL LW IQ BUCK REGW/INTEGRATEDFET 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 |
发布紧急采购，3分钟左右您将得到回复。