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参数资料
| 型号： | MAX8517EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/10页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL FOR MAX8517 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 每 IC 通道数： | 1 - 单 |
| 输出电压： | 1.2V |
| 电流 - 输出： | 1A |
| 输入电压： | 1.43 ~ 3.6V |
| 稳压器类型： | 正，可调式 |
| 工作温度： | 0°C ~ 85°C |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX8517 |
1.425V to 3.6V Input, 1A,
0.2V Dropout LDO Regulators
Operating Region and Power Dissipation
The maximum power dissipation depends on the ther-
mal resistance of the IC package and circuit board, the
temperature difference between the die junction and
ambient air, and the rate of airflow. The power dissipat-
ed in the device is P = I OUT ? (V IN - V OUT ).
The package features an exposed thermal pad on its
underside. This pad lowers the thermal resistance of
the package by providing a direct heat conduction
path from the die to the PCB.
Additionally, the ground pins (GND) perform the dual
function of providing an electrical connection to system
ground and channeling heat away. Connect the
exposed backside pad and GND to the system ground
using a large pad or ground plane, or multiple vias to
the ground plane layer.
Applications Information
Capacitor Selection and
Regulator Stability
Capacitors are required at the MAX8516/MAX8517/
MAX8518 inputs and outputs for stable operation over the
full temperature range and with load currents up to 1A.
Connect a 1μF capacitor between IN and ground and a
4.7μF capacitor with low equivalent series resistance
(ESR) between OUT and ground for 1A output current.
The input capacitor (C IN ) lowers the source impedance of
the input supply. If input-supply source impedance is
high, place a larger input capacitor close to IN to prevent
V IN sagging due to load transients. Smaller output capac-
itors can be used for output currents less than 1A.
Calculate C OUT as follows:
C OUT = I OUT ( MAX ) × ( 1 μ F 200 mA )
Noise, PSRR, and Transient Response
The MAX8516/MAX8517/MAX8518 are designed to
operate with low dropout voltages and low quiescent
currents while still maintaining good noise, transient
response, and AC rejection (see the Typical Operating
Characteristics for a plot of Power-Supply Rejection
Ratio (PSRR) vs. Frequency). When operating from
noisy sources, improved supply-noise rejection and
transient response can be achieved by increasing the
values of the input and output bypass capacitors and
through passive filtering techniques. The MAX8516/
MAX8517/MAX8518 load-transient response graphs
(see the Typical Operating Characteristics) show two
components of the output response: a DC shift from the
output impedance due to the load current change, and
the transient response. A typical transient overshoot for
a step change in the load current from 20mA to 1A is
45mV. Use larger output ceramic capacitors greater
than 4.7μF up to 50μF to attenuate the overshoot.
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8517EVKIT+ | 功能描述:电源管理IC开发工具 MAX8517 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 |
| MAX8518EUB | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX8518EUB+ | 功能描述:低压差稳压器 - LDO 1.425V to 3.6V Input 1A 0.2V Dropout LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX8518EUB+T | 功能描述:低压差稳压器 - LDO 1.425V to 3.6V Input 1A 0.2V Dropout LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX8518EUB-T | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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