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| 型号： | MAX8860EUA28+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 8/8页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 2.82V/ADJ .3A 8-UMAX |
| 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，固定式或可调式 |
| 输出电压： | 2.82V，1.25 V ~ 6.5 V |
| 输入电压： | 2.5 V ~ 6.5 V |
| 电压 - 压降（标准）： | 0.155V @ 300mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 300mA（最小） |
| 电流 - 限制（最小）： | 330mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
Low-Dropout, 300mA
Linear Regulator in μMAX
V IN > +5.5V Minimum Load
Current Requirements
When operating the MAX8860 with an input voltage
above 5.5V, a minimum load current of 50μA is required
to maintain regulation in preset voltage mode. When
setting the output with external resistors, ensure that the
minimum current through the external feedback resis-
tors and load is at least 60μA. This applies only when
the input voltage exceeds 5.5V. For input voltages less
than 5.5V, the MAX8860 maintains regulation and sta-
bility without external loading.
Applications Information
Capacitor Selection and
Regulator Stability
Typically, use a 2.2μF capacitor on the input and a
2.2μF capacitor on the output of the MAX8860.
Capacitor type is not critical, as long as it has an ESR
less than 0.5 ? . Larger capacitor values and lower ESR
provide better supply-noise rejection and transient
response. Use higher-value capacitors (10μF) if large,
fast input or load transients are anticipated or if the
device is located several inches from the power source.
For stable operation over the full temperature range,
with load currents up to 300mA, a minimum output-
capacitor value of 2.2μF is recommended. There is no
upper limit to capacitor size. The circuit used to gener-
ate the typical operating characteristics data used
2.2μF, X7R, 16V (1206) ceramic capacitors. These
capacitors typically have an ESR of 50m ? .
Power-Supply Rejection and Operation
from Sources Other than Batteries
The MAX8860 is designed to deliver low dropout volt-
age and low quiescent current in battery-powered sys-
tems. Power-supply rejection is 67dB at low frequencies
and rolls off above 100kHz. At high frequencies, the out-
put capacitor is the major contributor to the rejection of
power-supply noise (see the Power-Supply Rejection
Ratio vs. Frequency graph in the Typical Operating
Characteristics ).
When operating from sources other than batteries,
improve supply-noise rejection and transient response
by increasing the values of the input and output capaci-
tors, and by using passive filtering techniques (see the
supply and load-transient responses in the Typical
Operating Characteristics ).
Load-Transient Considerations
The MAX8860 load-transient response graph (see the
Typical Operating Characteristics ) shows the output
response due to changing load current. Reduce over-
shoot by increasing the output capacitor’s value and
decreasing its ESR.
Input-Output (Dropout) Voltage
A regulator’s minimum input-output voltage differential
(or dropout voltage) determines the lowest usable sup-
ply voltage. In battery-powered systems, this deter-
mines the useful end-of-life battery voltage. Because
the MAX8860 uses a P-channel MOSFET pass transis-
tor, its dropout voltage is a function of R DS(ON) (typical-
ly 0.5 ? ) multiplied by the load current (see the
Electrical Characteristics table).
Chip Information
TRANSISTOR COUNT: 148
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
? 2001 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8860EUA30 | 功能描述:低压差稳压器 - LDO 300mA 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 |
| MAX8860EUA30+ | 功能描述:低压差稳压器 - LDO 300mA 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 |
| MAX8860EUA30+T | 功能描述:低压差稳压器 - LDO 300mA 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 |
| MAX8860EUA30-T | 功能描述:低压差稳压器 - LDO 300mA 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 |
| MAX8860EUA33 | 功能描述:低压差稳压器 - LDO 300mA 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 |
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