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参数资料
| 型号： | MAX15031ATE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/17页 |
| 文件大小： | 0K |
| 描述： | IC BOOST CONV/CURRENT MON 16TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 转换器电流监控器，APD 偏压应用 |
| 输入电压： | 2.7 V ~ 11 V |
| 输出数： | 1 |
| 输出电压： | 3.7 V ~ 76 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： | 带卷 (TR) |
80V, 300mW Boost Converter and Current
Monitor for APD Bias Applications
Functional Diagram
PWR
OUTPUT ERROR AND CURRENT
FB
-A
COMPARATOR
CNTRL
V REF
MUX
+A
LX
SGND
-C
+C
SOFT-
PEAK CURRENT-LIMIT
COMPARATOR
SWITCH
CONTROL
LOGIC
80V
DMOS
START
PGND
V REF
REFERENCE
COMPARATOR
SWITCH
CURRENT
SENSE
CLAMP
CN
CP
CHARGE
PUMP
(DOUBLER)
THERMAL
SHUTDOWN
1x
MOUT
V REF
CURRENT-
MAX15031
CURRENT
LIMIT
ADJUSTMENT
RLIM
MONITOR
BIAS AND
REFERENCE
IN
UVLO
CLK
10x
CURRENT
LIMIT
APD
ILIM
OSCILLATOR
400kHz
SHDN
Detailed Description
The MAX15031 constant-frequency, current-mode, PWM
boost converter is intended for low-voltage systems that
require a locally generated high voltage. This device can
generate a low-noise, high output voltage required for
PIN and varactor diode biasing and LCD displays. The
MAX15031 operates either from +2.7V to +5.5V or from
+5.5V to +11V. For 2.7V to 5.5V operation, an internal
charge pump with an external 10nF ceramic capacitor is
used. For 5.5V to 11V operation, connect CP to IN and
leave CN unconnected.
The MAX15031 operates in discontinuous mode in
order to reduce the switching noise caused by reverse-
voltage recovery charge of the rectifier diode. Other
continuous mode boost converters generate large volt-
age spikes at the output when the LX switch turns on
BIAS
because there is a conduction path between the out-
put, diode, and switch to ground during the time need-
ed for the diode to turn off and reverse its bias voltage.
To reduce the output noise even further, the LX switch
turns off by taking 10ns typically to transition from ON
to OFF. As a consequence, the positive slew rate of the
LX node is reduced and the current from the inductor
does not “force” the output voltage as hard as would
be the case if the LX switch were to turn off faster.
The constant-frequency (400kHz) PWM architecture
generates an output voltage ripple that is easy to filter.
An 80V vertical DMOS device used as the internal
power switch is ideal for boost converters with output
voltages up to 76V. The MAX15031 can also be used in
other topologies where the PWM switch is grounded,
like SEPIC and flyback converters.
10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX15031AWE+ | 制造商:Maxim Integrated Products 功能描述:BOOST CNVRTR AND CURRENT MONITOR 16TQFN EP - Rail/Tube |
| MAX15031EVKIT | 制造商:Maxim Integrated Products 功能描述:EVALUATION KIT FOR THE MAX15031 - Bulk |
| MAX15031EVKIT+ | 功能描述:电源管理IC开发工具 MAX15031 Eval Kit 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 |
| MAX15032ATA+ | 制造商:Maxim Integrated Products 功能描述:500KHZ 36V OUTPUT 600MW PWM STEP- - Rail/Tube |
| MAX15032ATA+T | 功能描述:直流/直流开关转换器 500kHz 36V Out 600mW PWM Step-Up 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 |
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