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參數(shù)資料
| 型號(hào)： | LDO55 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | IP Library: Very Low Power, Adjustable Output Voltage, 25mA Low Dropout Voltage Regulator |
| 中文描述： | IP庫(kù)：功率非常低，可調(diào)輸出電壓，為25mA低壓降穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 1/2頁(yè) |
| 文件大?。?/td> | 21K |
| 代理商： | LDO55 |
1/2
June 2002
IP Library: Very Low Power, Adjustable Output Voltage2,
25mA Low Dropout Voltage Regulator
I
ANALOG BASEBAND REGULATOR
I
VERY LOW DROPOUT VOLTAGE : 60mV
I
HIGH PSRR : 60dB
I
LOW QUIESCENT CURRENT
I
20
μ
A STD-BY MODE CURRENT
I
NO CURRENT IN POWER DOWN MODE
I
SHORT CIRCUIT PROTECTION
I
SMALL DECOUPLING CERAMIC CAPACITOR
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 Digital (DSP/Microcontroller) devices.
APPLICATION NOTE
An external capacitor (C
OUT
= 1
μ
F typical) with an
equivalent serial resistance (ESR) in the range
0.02 to 0.6
is used to ensure stability.
Figure 1 :
Block Diagram
V
REF
LDO_55
OUT
IN
PWRDWN
STDBY
Figure 2 :
Typical Application Circuit
1
μ
F
ESR1
V
OUT
C
OUT
OUT
GND
V
IN
IN
PWRDWN
Power Down Mode
ON
OFF
Stand-by Mode
Active Mode
STDBY
LDO_55
→
→
Stand-by Mode
→
→
LDO_55
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
PRODUCT PREVIEW
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| LDO57 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:IP Library: High Output Current, Low power, 400mA Low Dropout Voltage Regulator |
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