LDO Regulator. YB1253 Datasheet

YB1253 Datasheet PDF, Equivalent


Part Number

YB1253

Description

High PSRR LDO Regulator

Manufacture

YOBON TECHNOLOGIES

Total Page 11 Pages
PDF Download
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YB1253 Datasheet
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
YB1253
300mA, Low Power, High PSRR LDO Regulator
Pin Configuration
SOT-89
123
GND VIN VOUT
SOT-89R
12
VOUT GND
3
VIN
VIN
3
SOT-23
12
GND VOUT
Figure 2 : pin configuration
VOUT
5
NC
4
SOT-25
12
VIN GND
3
EN
Pin Description
Table 1
Pin Name
Pin Function
VIN Unregulated Input Supply. Bypass with a capacitor to GND
GND Ground pin
EN Pull high to enable the regulator
NC
VOUT
No connection is required
Regulated Output Voltage
YB1253 Rev. 1.5
www.yobon.com.tw
2


Features Datasheet pdf YB1253 300mA, Low Power, High PSRR LDO R egulator Description The YB1253 is a se ries of ultra-low-noise, high PSRR, and low quiescent current low dropout (LDO ) linear regulators with 2.0% output vo ltage accuracy. The YB1253 regulators a chieve a low 300mA dropout at 300mA loa d current of 3.6V output and are availa ble 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 l ow-ESR and low cost ceramic capacitors, reducing the amount of board space cri tical in portable devices. The YB1253 r equires only 1.0μF output capacitor fo r stability with any load and consumes less than 1μA in shutdown mode. Built- in thermal shutdown and short-circuit c urrent limit offer secure protection ag ainst fault operation. YB1253 regulator s also include an auto-discharge functi on. The YB1253 regulators are available in SOT-23 / SOT-25 / SOT-89 packages. Features • • • • • • • • • • • High Accuracy Output Voltage : + .
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