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参数资料
| 型号： | APL5301-42A |
| 厂商： | Anpec Electronics Corporation |
| 英文描述： | Low IQ, Low Dropout 300mA Fixed Voltage Regulator |
| 中文描述： | 低智商，固定为300mA低压降稳压器 |
| 文件页数： | 10/19页 |
| 文件大小： | 205K |
| 代理商： | APL5301-42A |
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tery-powered systems, this will determine the useful
end-of-life battery voltage. Because the APL5301/2
use a p-channel MOSFET pass transistor, the drop-
out voltage is a function of drain-to-source on-resis-
tance (R
DS(ON)
) multiplied by the load current.
The APL5301/2 load-transient response graphs in typi-
cal characteristics show the transient response. A
step change in the load current from 1mA to 50mA at
1us will cause a 60mV transient spike. Larger output
capacitor and lower ESR can reduce transient spike.
The APL5301/2 use at least a 1uF capacitor on the
input, and this capacitor can be Aluminum, Tantalum
or Ceramic capacitor. The input capacitor with larger
value and lower ESR provides better PSRR and line-
transient response. The output capacitor also can use
Aluminum, Tantalum or Ceramic capacitor, and a mini-
mum value of 1uF and ESR above 0.06
is
recommended. The curve of the stable region in typi-
cal characteristics shows the appropriate output ca-
pacitor ESR for different load current stable operation.
A larger output capacitor can reduce noise and im-
prove load-transient response, stability, and PSRR.
Note that some ceramic dielectrics exhibit large ca-
pacitance and ESR variation with temperature. When
using this capacitor, a minimum 2.2uF or more may
be required to ensure the stability at low temperature
operation. Use a bypass capacitor at BP pin for low
output noise. Increasing the capacitance will slightly
decrease the output noise, but increase the start-up
time. (See Shutdown Exit Delay and Output Noise
vs.Bypass Capacitor graph in the typical
characteristics)
The APL5301/2 have an internal reverse protection, it
does not need an external schottky diode to connect
the regulator input and output. If the output voltage is
forced above the input voltage by more than 11mV,
the IC will be shutdown and the ground pin current is
below 0.1uA.
The APL5301/2 have a current limit protection. The
ouptut voltage will drop close to zero volt, when load
current reaches the limit, and then the load current
will be limited at 50mA after output voltage is below 0.
7V. When the load current back to the value where
limiting started, the output voltage and current will re-
turn to normal value. When output is shorted to
ground, the APL5301/2 will keep short circuit current
at 150mA .
The minimum input-output voltage difference (dropout)
determines the lowest usable supply voltage. In bat
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The APL5301/2 have an active high enable function.
Force EN high (>1.6V) enables the regulator, EN low
(<0.4V) disables the regulator and enter the shutdown
mode. In shutdown mode, the quiescent current can
reduce below 1uA. The EN pin cannot be floating, a
floating EN pin may cause an indeterminate state on
the output. If it is no use, connect to V
IN
for normal
operation.
相关PDF资料 |
PDF描述 |
|---|---|
| APL5301-42B | Low IQ, Low Dropout 300mA Fixed Voltage Regulator |
| APL5301-43A | Low IQ, Low Dropout 300mA Fixed Voltage Regulator |
| APL5301-43B | Low IQ, Low Dropout 300mA Fixed Voltage Regulator |
| APL5301-44A | Low IQ, Low Dropout 300mA Fixed Voltage Regulator |
| APL5301-44B | Low IQ, Low Dropout 300mA Fixed Voltage Regulator |
相关代理商/技术参数 |
参数描述 |
|---|---|
| APL5301-42B | 制造商:ANPEC 制造商全称:Anpec Electronics Coropration 功能描述:Low IQ, Low Dropout 300mA Fixed Voltage Regulator |
| APL5301-43A | 制造商:ANPEC 制造商全称:Anpec Electronics Coropration 功能描述:Low IQ, Low Dropout 300mA Fixed Voltage Regulator |
| APL5301-43B | 制造商:ANPEC 制造商全称:Anpec Electronics Coropration 功能描述:Low IQ, Low Dropout 300mA Fixed Voltage Regulator |
| APL5301-44A | 制造商:ANPEC 制造商全称:Anpec Electronics Coropration 功能描述:Low IQ, Low Dropout 300mA Fixed Voltage Regulator |
| APL5301-44B | 制造商:ANPEC 制造商全称:Anpec Electronics Coropration 功能描述:Low IQ, Low Dropout 300mA Fixed Voltage Regulator |
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