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参数资料
| 型号： | MAX15061ATE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/16页 |
| 文件大小： | 0K |
| 描述： | IC BOOST CONV/CURR MON 16-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 75 |
| 应用： | 电流/电源监控器 |
| 电流 - 电源： | 1.2mA |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（4x4） |
| 包装： | 管件 |
80V, 300mW Boost Converter and Current
Monitor for APD Bias Applications
Diode Selection
The MAX15061’s high switching frequency demands a
high-speed rectifier. Schottky diodes are recommend-
ed for most applications because of their fast recovery
time and low forward-voltage drop. Ensure that the
diode’s peak current rating is greater than the peak
inductor current. Also the diode reverse-breakdown
voltage must be greater than V OUT , the output voltage
of the boost converter.
Output Filter Capacitor Selection
For most applications, use a small output capacitor of
0.1μF or greater. To achieve low output ripple, a capaci-
tor with low ESR, low ESL, and high capacitance value
should be selected. If tantalum or electrolytic capacitors
are used to achieve high capacitance values, always
add a smaller ceramic capacitor in parallel to bypass
the high-frequency components of the diode current.
The higher ESR and ESL of electrolytic capacitors
increase the output ripple and peak-to-peak transient
voltage. Assuming the contribution from the ESR and
capacitor discharge equals 50% (proportions may vary),
calculate the output capacitance and ESR required for a
specified ripple using the following equations:
For very low output ripple applications, the output of the
boost converter can be followed by an RC filter to further
reduce the ripple. Figure 2 shows a 100 Ω (R F ), 0.1μF
(C F ) filter used to reduce the switching output ripple to
1mV P-P with a 0.1mA load or 2mV P-P with a 4mA load.
The output-voltage regulation resistor-divider must remain
connected to the diode and output capacitor node.
Use X7R ceramic capacitors for more stability over the full
temperature range. Use an X5R capacitor for -40°C to
+85°C applications.
Input Capacitor Selection
Bypass PWR to PGND with a 1μF (min) ceramic capaci-
tor and bypass IN to PGND with a 1μF (min) ceramic
capacitor. Depending on the supply source imped-
ance, higher values may be needed. Make sure that the
input capacitors are close enough to the IC to provide
adequate decoupling at IN and PWR as well. If the lay-
out cannot achieve this, add another 0.1μF ceramic
capacitor between IN and PGND (or PWR and PGND)
in the immediate vicinity of the IC. Bulk aluminum elec-
trolytic capacitors may be needed to avoid chattering
at low input voltage. In case of aluminum electrolytic
capacitors, calculate the capacitor value and ESR of
? (V OUT IN_MIN ) ?
η x V IN_MIN IN ? ?
C IN [ μ F ] = ? T S ? ?
V IN_MIN OUT I N _MIN ) ? ?
ESR [ m Ω ] =
C OUT [ μ F ] =
I OUT
0.5 x Δ V OUT
ESR [ m Ω ] =
? I LPEAK x L OPTIMUM ?
? T S ? ?
0.5 x Δ V OUT
I O UT
? V
the input capacitor using the following equations:
V OUT xI OUT ? I LPEAK xL OPTIMUM xV OUT ?
x 0.5 x Δ V (V ? V
0.5 x Δ V IN x η x V IN_MIN
V OUT x I OUT
L1
C IN
IN
D1
R F
100 Ω
V IN = 2.7V TO 5.5V
PWR
LX
V OUT
CNTR L
SHDN
R 2
MAX15061
FB
C OUT1
C F
0.1 μ F
CP
C PWR
C CP
CN
BIAS
R 1
PGND
SGND
Figure 2. Typical Operating Circuit with RC Filter
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX15061ATE+ | 功能描述:直流/直流开关转换器 80V 300mW Boost 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 |
| MAX15061ATE+T | 功能描述:直流/直流开关转换器 80V 300mW Boost 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 |
| MAX15062AATA+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX15062AATA+T | 功能描述:直流/直流开关调节器 36V 300mA Synchronous 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 |
| MAX15062ATA+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
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