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Eutech Microelectronics

EUP7917 Datasheet Preview

EUP7917 Datasheet

High PSRR Low-Noise LDO

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EUP7917
300mA, High PSRR Low-Noise LDO
DESCRIPTION
The EUP7917 is an efficient, CMOS voltage regulator
optimized for ultra-low-noise applications. It offers
high output accuracy, extremely low dropout voltage
low ground current and fast start-up time.
The EUP7917 provides a very low noise output, ideal
for RF applications where a clean voltage source is
required. A noise bypass pin is also available for
further reduction of output noise.
Designed specifically for handheld and battery-
powered devices, the EUP7917 provides a
TTL-logic-compatible enable pin. When disabled,
power consumption drops nearly to zero.
The EUP7917 also works with low-ESR ceramic
capacitors, reducing the amount of board space
necessary for power applications, critical in handheld
wireless devices.
Available in the SC-70 and SOT23-5 package, the
EUP7917 offers a wide range of output voltages. Key
features include current limit, thermal shutdown and
faster transient response.
FEATURES
z Space-Saving 5-pin SC-70 Package
z 2.5V to 6V Input Voltage Range
z 50µV(rms) Output Noise
z 250mV Dropout @ 300mA
z 75dB PSRR at 1kHz
z Low 70µA Ground Current
z Up to 300mA Output Current
z Stability with 1µF Ceramic Output Capacitors
z Excellent Load/Line Transient
z Thermal Shutdown and Current Limit
Protection
z Available in 1.2V,1.3V,1.5V,1.8V,1.85V,
2.5V,2.8V,2.85V, 2.9V,3.0V,3.3V,3.5V,4.8V
and Adjustable Voltages
z RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
z Cellular Phones
z Bluetooth Portable Radios and Accessories
z PDA and Palmtop Computers
z Consumer/Personal Electronics
Block Diagram
DS7917 Ver1.2 Mar. 2008
Figure 1.
1




Eutech Microelectronics

EUP7917 Datasheet Preview

EUP7917 Datasheet

High PSRR Low-Noise LDO

No Preview Available !

EUP7917Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
Typical Application Circuit
Pin Configurations
Package Type
Figure 2. Fixed-Voltage LDO Regulator
Pin Configurations
SC-70
SOT23-5
Pin Description
PIN
VIN
GND
VEN
BYPASS
ADJ
VOUT
PIN
1
2
3
4
5
Fixed-Voltage
Adjustable Voltage
DESCRIPTION
Input voltage of the LDO
Common ground
Enable input logic, enable high
Optional bypass capacitor for noise reduction
Adjustable regulator feedback input. Connect to resistor divider.
Output voltage of the LDO
DS7917 Ver1.2 Mar. 2008
2


Part Number EUP7917
Description High PSRR Low-Noise LDO
Maker Eutech Microelectronics
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EUP7917 Datasheet PDF






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