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参数资料
| 型号： | MAX8860EUA18+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 6/8页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 1.8V/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： | 1.8V，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
IN
SHDN
REVERSE
BATTERY
PROTECTION
CC
SHUTDOWN
LOGIC
ERROR
AMP
MOS DRIVER
WITH I LIMIT
P
OUT
MAX8860
SET
FAULT
DETECT
GND
Figure 1. Functional Diagram
THERMAL
SENSOR
1.25V
REF
DUAL-MODE
COMPARATOR
60mV
FAULT
Internal P-Channel Pass Transistor
The MAX8860 features a 0.5 ? typical P-channel
MOSFET pass transistor. This provides several advan-
tages over similar designs using PNP pass transistors,
IN
OUT
OUTPUT
VOLTAGE
FAULT
including longer battery life. PNP-based regulators
waste considerable amounts of current in dropout when
the pass transistor saturates. They also use high base-
drive currents under large loads. The P-channel
MOSFET requires no base-drive current, which reduces
quiescent current considerably. The MAX8860 con-
sumes less than 165μA of quiescent current whether in
BATTERY
C IN
2.2 μ F
33nF
MAX8860
SHDN SET
CC
GND
R1
R2
C OUT
2.2 μ F
100k ?
dropout, light-load, or heavy-load applications (see the
Typical Operating Characteristics ).
Output Voltage Selection
The MAX8860 features Dual Mode operation: it operates
in either a preset voltage mode or an adjustable mode.
Figure 2. Adjustable Output Using External Feedback
Resistors
V OUT = V SET ? 1 +
R 2 ?
In preset voltage mode, internal, trimmed feedback
resistors set the output voltage to an adjustable 1.25V to
6.5V output voltage or a fixed-voltage output of 1.8V
?
?
R 1 ?
?
R1 = R2 ? OUT ? 1 ?
(MAX8860EUA18), 2.5V (MAX8860EUA25), 2.77V
(MAX8860EUA27), 2.82V (MAX8860EUA28), 3V
(MAX8860EUA30), or 3.3V (MAX8860EUA33). Select
this mode by connecting SET to ground. In adjustable
mode, select an output between 1.25V and 6.5V using
two external resistors connected as a voltage divider to
SET (Figure 2). Calculate the output voltage with the fol-
lowing equation:
where V SET = 1.25V. To simplify resistor selection, use
the following equation:
? V ?
? V SET ?
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8860EUA25 | 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 |
| MAX8860EUA25+ | 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 |
| MAX8860EUA25+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 |
| MAX8860EUA25-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 |
| MAX8860EUA27 | 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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