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LDO512 ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 1 Page - STMicroelectronics

๋ถ€ํ’ˆ๋ช… LDO512
์ƒ์„ธ๋‚ด์šฉ  IP Library: Ultra Low Noise, High PSRR, Low Power, 30mA Very Low Dropout Voltage Regulators
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์ œ์กฐ์‚ฌ  STMICROELECTRONICS [STMicroelectronics]
ํ™ˆํŽ˜์ด์ง€  http://www.st.com
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LDO512 ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 1 Page - STMicroelectronics

   
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June 2002
s RF REGULATOR
s VERY LOW DROPOUT VOLTAGE : 30mV
s ULTRA LOW OUTPUT VOLTAGE NOISE
s HIGH PSRR : 70dB
s LOW STAND-BY CURRENT : 20ยตA
s LOW QUIESCENT CURRENT : 150ยตA FULL
LOAD
s NO CURRENT IN POWER DOWN MODE
s SHORT CIRCUIT PROTECTION
s SMALL DECOUPLING CERAMIC CAPACITOR
s BIPOLAR INPUT STAGE
TYPICAL APPLICATIONS
โ€“ Cellular and Cordless phones supplied by 1 cell
Lithium-ion battery / 3 cells Ni-MH or Ni-Cd
battery
โ€“ PDA (Personal Digital Assistant)
โ€“ Smart phone
โ€“ Portable equipment
โ€“ Supply for RF devices for cellular phone
APPLICATION NOTE
An external capacitor (COUT = 1ยตF) with an
equivalent serial resistance (ESR) in the range
0.02 to 0.6
โ„ฆ is used for regulator stability.
Figure 1 : Block Diagram
?
VREF
?
?
?
LDO_512
OUT
IN
PWRDWN
STDBY
Figure 2 : Typical Application Circuit
1
ยตF
ESR
VOUT
COUT
?
?
OUT
GND
?
?
?
VIN
IN
PWRDWN
Power Down Mode
OFF
ON
Stand-by Mode
STDBY
Active Mode
LDO_512
โ†’
โ†’
Stand-by Mode
โ†’
โ†’
LDO_512
IP Library: Ultra Low Noise, High PSRR, Low Power,
30mA Very Low Dropout Voltage Regulators
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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