LDO_517
IP Library: Wide Range ESR Capacitor, Low Noise,
100mA Low Dropout Voltage Regulator
PRODUCT PREVIEW
s
AnyESR REGULATOR
s
VERY COMMON OUTPUT DECOUPLING
CERAMIC CAPACITOR
s
s
s
s
s
s
s
LOW CONSUMPTION : 250碌A(chǔ) FULL LOAD
VERY LOW NOISE : 30碌V
VERY LOW DROPOUT VOLTAGE : 50mV
HIGH PSRR : 60dB
STANDBY AND POWER DOWN MODE
NO CURRENT IN POWER DOWN MODE
SHORT CIRCUIT PROTECTION
APPLICATION NOTE
An external capacitor (C
OUT
= 1碌F) with an
equivalent serial resistance (ESR) up to 1鈩?is
used for regulator stability.
Figure 1 :
Block Diagram
IN
?
? OUT
PWRDWN
STDBY
?
?
V
REF
TYPICAL APPLICATIONS
鈥?Cellular and Cordless phones supplied by 1 cell
Lithium-ion battery / 3 cells Ni-MH or Ni-Cd
battery
鈥?PDA (Personal Digital Assistant),
鈥?Smart phone
鈥?Portable equipment
鈥?Supply for RF devices for cellular phone
Figure 2 :
Typical Application Circuit
IN
LDO_517
V
IN
?
?
OUT
V
OUT
Power Down Mode
ON
OFF
Stand-by Mode
Stand-by Mode
鈫?/div>
鈫?/div>
Active Mode
鈫?/div>
鈫?/div>
PWRDWN
1碌F
?
LDO_517
ESR
C
OUT
STDBY
?
?
GND
June 2002
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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