LP5904 Datasheet, PDF (1/17 Pages) Texas Instruments – Ultra Low Noise, 200 mA Linear Regulator for RF/Analog Circuits - Requires No Bypass Capacitor

LP5904
April 13, 2012
Ultra Low Noise, 200 mA Linear Regulator for RF/Analog
Circuits - Requires No Bypass Capacitor
General Description
The LP5904 is a linear regulator capable of supplying 200 mA
output current. Designed to meet the requirements of RF/
Analog circuits, the LP5904 device provides low noise, high
PSRR, low quiescent current, and low line transient response
figures. Using new innovative design techniques the LP5904
offers class-leading device noise performance without a noise
bypass capacitor and the ability for remote output capacitor
placement. An active pulldown circuit with a 280Ω resistor is
wired from the output to ground pins to quickly discharge out-
put when the device is disabled (VEN = low).
The device is designed to work with a 1.0 μF input and a
1.0 μF output ceramic capacitor. (No Bypass Capacitor is re-
quired.)
The device is available in a micro SMD package. For other
package options contact your local TI sales office.
This device is available between 1.2V and 4.4V in 25 mV
steps. Please contact Texas Instruments Sales for specific
voltage option needs.
Features
■ ^{Stable with 1.0 μF Ceramic Input and Output Capacitors}
■ ^{No Noise Bypass Capacitor Required}
■ ^{Remote Output Capacitor Placement}
■ ^{Thermal-overload and short-circuit protection}
■ ^{−40°C to +125°C junction temperature range for operation}
Key Specifications
■ ^{Input voltage range}
■ ^{Output voltage range}
■ ^{Output current}
■ ^{Low output voltage noise @ 200 mA}
■ ^PSRR
■ ^{Output voltage tolerance}
■ ^{Virtually zero I}_Q ^(disabled)
■ ^{Very low I}_Q ^(enabled)
■ ^{Startup time}
■ ^{Low dropout}
2.2V to 5.5V
1.2V to 4.4V
200 mA
6.5 μV_RMS
78 dB at 1kHz
± 2%
<1 μA
11 μA
85 μs
95 mV typ.
Package
4-Bump micro SMD
(lead free)
0.815 mm x 0.815 mm x
0.600 mm
Applications
■ ^{Cellular phones}
■ ^{PDA handsets}
■ ^{Wireless LAN devices}
Typical Application Circuit
© 2012 Texas Instruments Incorporated 301104 SNVS637F
30110401
www.ti.com