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YB1253 Schematic ( PDF Datasheet ) - YOBON TECHNOLOGIES

Teilenummer YB1253
Beschreibung High PSRR LDO Regulator
Hersteller YOBON TECHNOLOGIES
Logo YOBON TECHNOLOGIES Logo 



Gesamt 11 Seiten
YB1253 Datasheet, Funktion
YB1253
300mA, Low Power, High PSRR LDO Regulator
Description
The YB1253 is a series of ultra-low-noise,
high PSRR, and low quiescent current low
dropout (LDO) linear regulators with 2.0%
output voltage accuracy. The YB1253
regulators achieve a low 300mA dropout at
300mA load current of 3.6V output and are
available in voltages ranging from 1.2V to
3.6V with 0.1 V per step (custom voltage is
considerate at request).
The YB1253 regulators are optimized to
work with low-ESR and low cost ceramic
capacitors, reducing the amount of board
space critical in portable devices. The
YB1253 requires only 1.0μF output
capacitor for stability with any load and
consumes less than 1μA in shutdown
mode.
Built-in thermal shutdown and short-circuit
current limit offer secure protection against
fault operation. YB1253 regulators also
include an auto-discharge function. The
YB1253 regulators are available in SOT-23
/ SOT-25 / SOT-89 packages.
Features
High Accuracy Output Voltage : + 2%
Wide Output Voltage Range : 1.2~3.6V
Ultra-Low-Noise Low-Drop-Out
Typical Output Current : 300 mA
Low Quiescent Current: ~10μA
300mV Dropout at 300mA 3.6V Output
Stable with 1.0μF Ceramic Capacitor
Only Need Input and Output Capacitors
Thermal Protection Shutdown
Auto discharge function
Green Package (RoHS) Available
Applications
PDA, Notebook, PC Computers
DSC, Cellular phones
PCMCIA Cards, PC Cameras
USB Based Portable Devices
GSM/GPRS/3G RF Transceiver
Wireless LANs
Bluetooth Portable Radios
Battery-Powered Devices
Typical Application Circuitry
Input
VIN VOUT
Output
Cin=1uF
ON
OFF
YB1253
EN
GND
Cout=1uF
Figure 1-1 : SOT-25 application circuit
Input
Cin=1uF
VIN VOUT
Output
YB1253 Cout=1uF
GND
Figure 1-2 : SOT-23 application circuit
YB1253 Rev. 1.5
www.yobon.com.tw
1






YB1253 Datasheet, Funktion
YB1253
300mA, Low Power, High PSRR LDO Regulator
Input transient response
Load transient response
Iout=100mA
Vout Vout =3.3V
VIN
4V
6V
Iout
10mA250mA
Vout
VIN=4.3V
Vout =3.3V
Power supply rejection ratio
Vin=3.8VDC + 1VP-P, Cout=1.0μF
Vout=2.8V
Iout=1mA
Power supply rejection ratio
Vin=3.8VDC + 1VP-P, Cout=1.0μF
Vout=2.8V
Iout=10mA
YB1253 Rev. 1.5
www.yobon.com.tw
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