EUP7907
600mA High PSRR Low Dropout
Linear Regulator
DESCRIPTION
The EUP7907 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 EUP7907 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 EUP7907 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 EUP7907
detects fault signal, such as over-temperature, it will turn off
the pass transistor and discharge VOUT to GND from the
internal resistor.
EUP7907 can be operated in two modes, operated in fixed
mode when the FB pin connected to ground, its output is a
pre-set value:0.8V~3.6V. There is no external component
needed to decide the output voltage. Operated in adjustable
mode when the FB pin connected to two external resistors
divider, its output can be adjusted from 0.8V to 5V. Other
key features include over-current protection, thermal
shutdown. The device can be available in the TDFN-8
package or SOT23-5 package.
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: 0.8V ~ 3.6V
Adjustable Output Voltage: 0.8V to 5V
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 Computer
Typical Application Circuit
Figure. 1 Adjustable Output
DS7907
Ver 1.1
Oct . 2008
1
EUTECH [ EUTECH MICROELECTRONICS INC ]
