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| 型号： | MAX1806EUA18+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/10页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 1.8V/ADJ .5A 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 稳压器拓扑结构： | 正，固定式或可调式 |
| 输出电压： | 1.8V，0.8 V ~ 4.5 V |
| 输入电压： | 2.25 V ~ 5.5 V |
| 稳压器数量： | 1 |
| 电流 - 输出： | 500mA（最小） |
| 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）裸露焊盘 |
| 供应商设备封装： | 8-uMax-EP |
| 包装： | 管件 |
500mA, Low-Voltage Linear Regulator in μMAX
V IN
+2.25V TO +5.5V
IN
C IN
1 μ F
IN
MOSFET
DRIVER WITH
I LIM
THERMAL
SENSOR
OUT
PRESET MODE
V OUT
0.8V TO 3.3V
ON
OFF
SHDN
SHUTDOWN
LOGIC
V REF
0.8V
OUT
C OUT
10 μ F
ERROR
LOGIC SUPPLY
VOLTAGE (V OUT )
R POK
100k ?
MAX1806
AMPLIFIER
TO
μ C
POK
93% V REF
80mV
SET
GND
Figure 1. Functional Diagram
ing a direct heat conduction path from the die to the PC
board. 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.
The MAX1806 delivers up to 0.5A(RMS) and operates
with input voltages up to 5.5V, but not simultaneously.
High output currents can only be sustained when input-
output differential is within the limits outlined.
Applications Information
Capacitor Selection and Regulator
Stability
Connect a 1μF capacitor between IN and ground and a
10μF low equivalent series resistance (ESR) capacitor
between OUT and ground. The input capacitor (C IN )
lowers the source impedance of the input supply.
Reduce noise and improve load-transient response,
stability, and power-supply rejection by using larger
output capacitors. The output capacitor ’ s (C OUT ) ESR
affects stability and output noise. Use output capacitors
with an ESR of 0.1 ? or less to ensure stability and opti-
mum transient response. Surface-mount ceramic
capacitors have very low ESR and are commonly avail-
able in values up to 10μF. Connect C IN and C OUT as
close to the MAX1806 as possible.
Noise, PSRR, and Transient Response
The MAX1806 is designed to operate with low dropout
voltages and low quiescent currents, while still main-
taining good noise, transient response, and AC rejec-
tion. See the Typical Operating Characteristics for a
plot of Power-Supply Rejection Ratio (PSRR) vs. Freq-
uency. 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 MAX1806 load-transient
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1806EUA18/V+ | 功能描述:低压差稳压器 - LDO 500mA 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 |
| MAX1806EUA18/V+T | 功能描述:低压差稳压器 - LDO 500mA 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 |
| MAX1806EUA18+ | 功能描述:低压差稳压器 - LDO 500mA 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 |
| MAX1806EUA18+T | 功能描述:低压差稳压器 - LDO 500mA 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 |
| MAX1806EUA18-T | 功能描述:低压差稳压器 - LDO 500mA 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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