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| 型号： | MAX8888EZK33+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/9页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V .3A TSOT23-5 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 3.3V |
| 输入电压： | 最高 5.5V |
| 电压 - 压降（标准）： | 0.15V @ 300mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 300mA |
| 电流 - 限制（最小）： | 420mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-5 细型，TSOT-23-5 |
| 供应商设备封装： | TSOT-23-5 |
| 包装： | 标准包装 |
| 其它名称： | MAX8888EZK33+TDKR |
Low-Dropout, 300mA Linear Regulators in SOT23
IN
SHDN
MAX8888
SHUTDOWN
LOGIC
ERROR
AMP
POK
MOS DRIVER
WITH I LIMIT
P
OUT
THERMAL
SENSOR
1.25V
REF
95%
REF
POK
GND
Figure 1. Functional Diagram
stability and optimum transient response. Surface-mount
ceramic capacitors have very low ESR and are com-
monly available in values up to 10μF. Connect C IN and
C OUT as close to the MAX8887/MAX8888 as possible to
minimize the impact of PC board trace inductance.
Noise, PSRR, and Transient Response
The MAX8887/MAX8888 are designed to operate with
low dropout voltages and low quiescent currents in bat-
tery-powered systems while still maintaining excellent
noise, transient response, and AC rejection. See the
Typical Operating Characteristics for a plot of power-
supply rejection ratio (PSRR) versus frequency. 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.
400
300
200
100
0
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
(POWER DISSIPATION LIMIT)
T A = +85 ° C
T A = +70 ° C
MAXIMUM RECOMMENDED OUTPUT CURRENT
Input-Output (Dropout) Voltage
A regulator’s minimum input-to-output voltage differen-
0
0.5
1.0
1.5 2.0 2.5
(V IN - V OUT ) (V)
3.0
3.5
4.0
tial (dropout voltage) determines the lowest usable sup-
ply voltage at which the output is regulated. In
battery-powered systems, this determines the useful
end-of-life battery voltage. The MAX8887/MAX8888 use
a p-channel MOSFET pass transistor. Its dropout volt-
age is a function of drain-to-source on-resistance
(R DS(ON) ) multiplied by the load current (see the
Typical Operating Characteristics).
V DROPOUT = V IN - V OUT = R DS(ON) ? I OUT
Figure 2. Power Operating Regions: Maximum Output Current
vs. Input Voltage
_______________________________________________________________________________________
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相关代理商/技术参数 |
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