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Ultra Low Noise, 100 mA Linear Regulator for RF/Analog Circuits Requires No Bypass Capacitor
LP5900
Ultra Low Noise, 100 mA Linear Regulator for RF/Analog
Circuits Requires No Bypass Capacitor
General DescriptionThe LP5900isa linear regulator capableof supplying 100 output current. Designedto meet the requirementsof
RF/Analog circuits, the LP5900 device provides low noise,
high PSRR, low quiescent current, and low line transient
response figures. Using new innovative design techniques
the LP5900 offers class-leading device noise performance
withouta noise bypass capacitor.
The deviceis designedto work with 0.47µF input and output
ceramic capacitors. (No Bypass Capacitoris required)
This deviceis available with 1.5V, 1.8V, 2.0V, 2.2V, 2.5V,
2.8V, 3.0V, and 3.3V outputs. Please contact your local sales
officefor any other voltage options.
Features Stable with 0.47µF Ceramic Input and Output
Capacitors No Noise Bypass Capacitor Required Logic Controlled Enable Thermal-overload and short-circuit protection −40˚Cto +125˚C junction temperature rangefor
operation
Key Specifications Input voltage range 2.5Vto 5.5V Output voltage range 1.5Vto 3.3V Output current 100 mA Low output voltage noise 6.5 µVRMS PSRR 85dBat1 kHz Output voltage tolerance ± 2% Virtually zeroIQ (disabled) <1µA Very lowIQ (enabled) 25µA Start-up time 150µs Low dropout 80 mV typ.
Package4-Bump micro SMD
(lead free)
1.057 mmx 1.083 mm
Applications Cellular phones PDA handsets Wireless LAN devices
Typical Application CircuitJuly 2005
LP5900
Ultra
Low
Noise,
Linear
Regulator
for
RF/Analog
Circuits
Requires
Capacitor