600mA Low Noise High PSRR
Low Dropout Linear Regulator
DESCRIPTION
The EUP7907A is a high current, low dropout linear
regulator with fast transient response and high PSRR. It
offers high output accuracy, extremely low dropout voltage,
low quiescent current and fast start-up time.
The EUP7907A is designed to work with low-ESR ceramic
capacitor, reducing the amount of the PCB area necessary for
power applications. Only a 2.2uF ceramic capacitor can
make the device stable over the whole load range.
The EUP7907A monitors the input voltage for power on
reset to ensure the regulator is disabled when the input
voltage is not high enough for normal operation. When
EUP7907A detects fault signal, such as over-temperature, it
will turn off the pass transistor and discharge VOUT to GND
from the internal resistor.
EUP7907A only can be operated in fixed mode, the pre-set
valve is from 1.2V~3.6V. By setting the capacitor connected
to BYPASS pin can get high PSRR. Other key features
include over-current protection, thermal shutdown. The
device can be available in the TDFN-6 and SOT23-5
package.
EUP7907A
FEATURES
2.5V to 5.5V Input Voltage Range
300mV@600mA Dropout Voltage
Excellent Transient Response
Stable with 2.2uF Ceramic Output Capacitor
70dB PSRR at 1kHz
Low 120µA Quiescent Current
Low Shutdown Current:<1µA
Output Current Limit
Output Voltage With High Accuracy:
2% Initial Accuracy
Fixed Output Voltage: 1.2V ~ 3.6V
Thermal Shutdown
COUT Auto-Discharge when Shutdown
RoHS Compliant and 100% Lead (Fb)-Free
APPLICATIONS
Cellular Phones
Bluetooth portable radios and Accessories
battery-Powered Equipment
Laptop, Palmtops, Notebook Compute
Typical Application Circuit
Figure. 1 Fixed Output
DS7907A Ver 1.1
Mar.
2009
1
EUTECH [ EUTECH MICROELECTRONICS INC ]
