Yobon YB1253ST23X120, YB1253ST23X130, YB1253ST23X140, YB1253ST23X150, YB1253ST23X160 Schematic [ru]

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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

 

 

Input

VIN VOUT

Output

VIN

VOUT

Output

 

 

 

 

Cin=1uF

YB1253

Cout=1uF

Cin=1uF

YB1253

Cout=1uF

 

 

ON

EN

 

 

GND

 

 

 

 

 

OFF

 

GND

 

 

 

Figure 1-2 : SOT-23 application circuit

Figure 1-1 : SOT-25 application circuit

YB1253 Rev. 1.5

www.yobon.com.tw

1

YB1253

300mA, Low Power, High PSRR LDO Regulator

Pin Configuration

 

SOT-89

 

SOT-89R

 

1

2

3

1

2

3

GND

VIN

VOUT

VOUT

GND

VIN

VIN

 

VOUT

 

NC

3

 

5

 

4

SOT-23

 

 

SOT-25

 

1

2

1

2

3

GND

VOUT

VIN

GND

EN

Figure 2 : pin configuration

Pin Description

Table 1

Pin Name

Pin Function

 

Unregulated Input Supply. Bypass with a capacitor to GND

VIN

 

 

GND

Ground pin

 

 

EN

Pull high to enable the regulator

 

 

NC

No connection is required

 

 

VOUT

Regulated Output Voltage

 

 

YB1253 Rev. 1.5

www.yobon.com.tw

2

Yobon YB1253ST23X120, YB1253ST23X130, YB1253ST23X140, YB1253ST23X150, YB1253ST23X160 Schematic

YB1253

300mA, Low Power, High PSRR LDO Regulator

Ordering Information

Y B 1253

X

O utput V oltage 120 : 1.2V

130 : 1.3V

:

360 : 3.6V

X : fixed

P ackage Type

S T23 : S O T -23

S T25 : S O T -25

S T89 : S O T -89

S T8R : S O T -89R

*O rder exam ple :

Y B 1253 S T89X 250 for Y B 1253 of 2.5V output and S O T-89 package *S hipping Q uantity :

S O T -23

: 3000

units tape & reel

S O T -25

: 3000

units tape & reel

S O T -89

: 1000

units tape & reel

S O T -89R

: 1000 units tape & reel

*O nly green package

Marking Information

Absolute Maximum Ratings (Note 1)

Recommended Operating Conditions

 

(Note 2)

Supply Voltage ................................

-0.3V to 6.0V

Output Voltage .......................

-0.3V to (VIN+0.3V)

Output Short-Circuit Duration....................

Infinite

Junction Temperature Range...................

+150

Storage Temperature Range......

-65 to +150

Lead Temperature....................................

+250

ESD Susceptibility (HBM)…………… ………2KV

ESD Susceptibility (MM) .............................

200V

Note:

 

Input Supply Voltage.........................

2V to 5.5V

Operating Temperature..............

-40 to +85

Thermal Information

(Note 3)

Thermal Resistance (SOT-23/25, θJA).280 /W

Thermal Resistance (SOT-89, θJA)…...180 /W

InternalPowerDissipation (SOT-23/25,PD)……0.4W

Internal Power Dissipation (SOT-89, PD)0.55W

1.Exceeding these ratings may damage the device.

2.The device is not guaranteed to function outside of its operating conditions.

3.θJA is measured in free air at TA = 25 on a low effective thermal conductivity board.

YB1253 Rev. 1.5

www.yobon.com.tw

3

YB1253

300mA, Low Power, High PSRR LDO Regulator

Electrical Characteristics

Table 2

TA = 25 , VIN = ( VOUT + 1 V ), CIN = COU T = 1.0μF, VEN = VIN, unless otherwise

Function Parameter

Conditions

Min

Typ

Max

Units

 

 

 

 

 

 

Input Voltage Range

 

2.0

 

5.5

V

 

 

 

 

 

 

Output Voltage, VOUT

Predefined

1.2

 

3.6

V

 

 

 

 

 

 

Output Voltage Accuracy

IOUT = 10mA, VOUT >= 1.3V

-2.0

 

+2.0

%

 

 

 

 

 

IOUT = 10mA, VOUT = 1.2V

0

 

+4.0

%

 

 

 

 

 

 

 

 

Output Current Limit

Short-circuit output

 

500

 

mA

 

 

 

 

 

 

 

Vout = 3.6V, Iout = 300 mA

 

300

 

 

 

 

 

 

 

 

 

Vout = 3.3V, Iout = 300 mA

 

350

 

 

Dropout Voltage (Note 1)

 

 

 

 

mV

Vout = 2.8V, Iout = 300 mA

 

430

 

 

 

 

 

 

 

 

Vout = 1.8V, Iout = 300 mA

 

600

 

 

 

 

 

 

 

 

 

Vout = 1.2V, Iout = 300 mA

 

900

 

 

 

 

 

 

 

 

Ground Current

Iground = Iin - Iout

 

10

 

μA

 

 

 

 

 

 

Line Regulation

Vin = (Vout+1V) to 5.5V, Iout =10mA

 

0.10

0.20

%/V

 

 

 

 

 

 

Load Regulation

Iout = 1mA to 300 mA

 

0.005

0.01

%/mA

 

 

 

 

 

 

Shutdown Supply Current

EN = Vin=0V

 

 

1

μA

 

 

 

 

 

 

Ripple Rejection (PSRR)

(Note 2)

 

50

 

dB

 

 

 

 

 

 

Start Up Delay (Note 3)

Rload=100ohm

 

200

 

μS

 

 

 

 

 

 

Shutdown Delay

Rload=10K ohm, VOUT=1.5V

 

1

 

mS

 

 

 

 

 

Rload=10K ohm, VOUT=1.2V

 

1

 

mS

 

 

 

 

 

 

 

 

 

EN Logic Low Level

Vin = 2.0V to 5.5V

 

 

0.4

V

 

 

 

 

 

 

EN Logic High Level

Vin = 2.0V to 5.5V

1.2

 

Vin

V

 

 

 

 

 

 

EN Input Bias Current

Vin = EN = 3V

 

1.5

 

μA

 

 

 

 

 

 

Thermal Shutdown

Shutdown Temperature

 

160

 

°C

 

 

 

 

 

 

Thermal Hysteresis

 

 

20

 

°C

 

 

 

 

 

 

Note 1: The dropout voltage varies depending on output voltage selection. Dropout is defined as VIN–VOUT when VOUT is 100mV below nominal VOUT where Vin=Vout + 1V for nominal VOUT.

Note 2: PSRR is tested at Vin=3.8+1Vppac, Vout=2.8V, I_load=1mA. Note 3: Time needed for VOUT to reach 90% of final value.

YB1253 Rev. 1.5

www.yobon.com.tw

4

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