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| 型号： | MAX8875EUK50+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 6/9页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 5V .15A SOT23-5 |
| 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： | 5V |
| 输入电压： | 最高 6.5V |
| 电压 - 压降（标准）： | 0.165V @ 150mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 150mA（最小） |
| 电流 - 限制（最小）： | 160mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 带卷 (TR) |
150mA, Low-Dropout Linear Regulator
with Power-OK Output
Pin Description
PIN
1
2
3
4
5
NAME
IN
GND
SHDN
POK
OUT
FUNCTION
Regulator Input. Supply voltage can range from 2.5V to 6.5V. Bypass with 1μF to GND (see the Capacitor
Selection and Regulator Stability section).
Ground. This pin also functions as a heatsink. Solder to a large pad or the circuit-board ground plane to
maximize power dissipation.
Active-Low Shutdown Input. A logic low reduces the supply current to below 1μA. Connect to IN for normal
operation.
Power-OK Output. Active-low, open-drain output indicates an out-of-regulation condition. Connect a 100k
pull-up resistor to OUT for logic levels. If not used, leave this pin unconnected.
Regulator Output. Fixed 5.0V, 3.3V, 3.0V, 2.7V, 2.5V, or 1.5V output. Sources up to 150mA. Bypass with 1μF
(<0.2 ? typical ESR) ceramic capacitor to GND for V OUT ≥ 2.5V. Bypass with 3.3μF (<0.2 ? typ ESR) ceramic
capacitor to GND for V OUT = 1.5V.
REVERSE-
IN
BATTERY
SHDN
PROTECTION
ERROR
MOS DRIVER
P
MAX8875
SHUTDOWN
LOGIC
AMP
POK
WITH I LIMIT
OUT
THERMAL
SENSOR
1.25V
REF
95%
REF
POK
GND
Figure 1. Functional Diagram
_______________Detailed Description
The MAX8875 is a low-dropout, low-quiescent-current
linear regulator designed primarily for battery-powered
applications. The device supplies loads up to 150mA
and is available with preset output voltages of 1.5V,
2.5V, 2.7V, 3.0V, 3.3V, or 5.0V. As illustrated in Figure
1, the MAX8875 consists of a 1.25V reference, error
amplifier, P-channel pass transistor, power-OK com-
parator, and internal feedback voltage divider.
The 1.25V bandgap reference is connected to the error
amplifier’s inverting input. The error amplifier compares
this reference with the feedback voltage and amplifies
the difference. If the feedback voltage is lower than the
reference voltage, the pass-transistor gate is pulled
lower, which allows more current to pass to the output
and increases the output voltage. If the feedback volt-
age is too high, the pass-transistor gate is pulled up,
allowing less current to pass to the output. The output
voltage feeds back through an internal resistor voltage
divider connected to the OUT pin.
Additional blocks include a current limiter, reverse-
battery protection, thermal sensor, and shutdown logic.
6
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相关代理商/技术参数 |
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| MAX8875EZK29 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8875EZK29-T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8877ESA15 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8877EUK15 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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