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参数资料
| 型号： | MAX8531EBTJJ+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 8/12页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 2.85V .2A/.15A 6-UCSP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 2.85V |
| 输入电压： | 2.5 V ~ 6.5 V |
| 电压 - 压降（标准）： | 0.1V @ 100mA |
| 稳压器数量： | 2 |
| 电流 - 输出： | 200mA（最小），150mA（最小） |
| 电流 - 限制（最小）： | 210mA，165mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-WFBGA，CSPBGA |
| 供应商设备封装： | 6-uCSP（1.57x1.16） |
| 包装： | 带卷 (TR) |
Dual Low-Dropout Linear Regulators
with RESET or Low-Noise Output in UCSP or QFN
Applications Information
Capacitor Selection
and Regulator Stability
Use a 2.2μF capacitor on the MAX8530/MAX8531s ’
inputs. Larger input capacitor values with lower ESRs
provide better supply-noise rejection and line-transient
response. To reduce noise and improve load transients,
use large-output capacitors, up to 10μF. For stable
operation over the full temperature range and with rated
maximum load currents, use a minimum of 2.2μF (or
1μF for <150mA loading for OUT1) and 1μF for OUT2.
Note that some ceramic dielectrics exhibit large capac-
itance and ESR variation with temperature. With
dielectrics such as Z5U and Y5V, it is necessary to use
4.7μF or more to ensure stability at temperatures below
-10°C. With X7R or X5R dielectrics, 2.2μF is sufficient at
all operating temperatures. These regulators are opti-
mized for ceramic capacitors. Tantalum capacitors are
not recommended.
PSRR and Operation from
Sources Other than Batteries
The MAX8530/MAX8531 is designed to deliver low
dropout voltages and low quiescent currents in battery-
powered systems. Power-supply rejection is 60dB at
low frequencies (see the Power-Supply Rejection Ratio
vs. Frequency graph in the Typical Operating Char-
acteristics ).
When operating from sources other than batteries,
improve supply-noise rejection and transient response
by increasing the values of the input and output bypass
capacitors and through passive filtering techniques.
Load-Transient Considerations
The MAX8530/MAX8531 load-transient response
graphs (see the Typical Operating Characteristics )
show two components of the output response: a DC
shift in the output voltage because of the different load
currents, and the transient response. Increase the output
capacitor’s value and decrease its ESR to attenuate
transient spikes.
Input/Output (Dropout Voltage)
A regulator’s minimum input/output voltage differential
(or dropout voltage) determines the lowest usable supply
voltage. In battery-powered systems, this determines
the useful end-of-life battery voltage. Because the
MAX8530/MAX8531 use a P-channel MOSFET pass
transistor, their dropout voltage is a function of drain-to-
source on-resistance (R DS(ON) ) multiplied by the load
current (see the Typical Operating Characteristics ).
Calculating the Maximum
Output Power in UCSP
The maximum output power of the MAX8530/MAX8531
can be limited by the maximum power dissipation of the
package. Obtain the maximum power dissipation by
calculating the power dissipation of the package as a
function of the input voltage, output voltage, and output
currents. The maximum power dissipation should not
exceed the package’s maximum power rating:
P = (V IN(MAX) - V OUT1 ) x I OUT1 +
(V IN(MAX) - V OUT2 ) x I OUT2
where:
V IN(MAX) = Maximum input voltage
P MAX = Maximum power dissipation of the package
(308mW for UCSP and 1951mW for the QFN package)
V OUT1 = Output voltage of OUT1
V OUT2 = Output voltage of OUT2
I OUT1 = Maximum output current of OUT1
I OUT2 = Maximum output current of OUT2
P should be less than P MAX . If P is greater than P MAX ,
consider using the QFN package.
8
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相关代理商/技术参数 |
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|---|---|
| MAX8531ETTA8 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8531ETTA8-T | 功能描述:低压差稳压器 - LDO Dual Low-Dropout Linear Regulator 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 |
| MAX8531ETTGG | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8531ETTGG-T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8531EUAA8 | 制造商:Maxim Integrated Products 功能描述: |
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