參數(shù)資料
型號: LDO518
廠商: 意法半導(dǎo)體
元件分類: 基準電壓源/電流源
英文描述: IP Library: Low Noise, High PSRR 100mA Low Dropout Voltage Regulator
中文描述: IP庫:低噪聲,高PSRR 100mA的低壓差穩(wěn)壓器
文件頁數(shù): 1/4頁
文件大?。?/td> 105K
代理商: LDO518
1/4
June 2002
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ULTRA LOW POWER REGULATOR
ULTRA LOW CONSUMPTION : 45μA FULL
LOAD
VERY LOW NOISE : 30μV
VERY LOW DROPOUT VOLTAGE : 50mV
HIGH PSRR : 60dB
SMALL DECOUPLING CERAMIC CAPACITOR
NO CURRENT IN POWER DOWN MODE
SHORT CIRCUIT PROTECTION
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TYPICAL APPLICATIONS
– Cellular and Cordless phones supplied by 1 cell
Lithium-ion battery / 3 cells Ni-MH or Ni-Cd
battery
– PDA (Personal Digital Assistant)
– Smart phone
– Portable equipment
– Supply for RF devices for cellular phone
APPLICATION NOTE
An external capacitor (C
OUT
= 2.2μF) with an
equivalent serial resistance (ESR) in the range of
0.02 to 0.6
is used for regulator stability.
Figure 1 :
Block Diagram
V
REF
LDO_518
OUT
IN
PWRDWN
STDBY
Figure 2 :
Typical Application Circuit
2.2
μ
F
ESR
V
OUT
C
OUT
OUT
GND
V
IN
IN
PWRDWN
Power Down Mode
ON
OFF
Stand-by Mode
Active Mode
STDBY
LDO_518
Stand-by Mode
LDO_518
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
PRODUCT PREVIEW
IP Library: Low Noise, High PSRR
100mA Low Dropout Voltage Regulator
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