Yobon YB1231ST23X320, YB1231ST23X330, YB1231ST23X340, YB1231ST23X350, YB1231ST23X360 Schematic [ru]

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YB1231

HV600mA, Low-Noise LDO Regulator

Description

The YB1231 is a series of ultra-low-noise, low dropout (LDO) linear regulators with 2.0% output voltage accuracy. The YB1231 regulators achieve a low 440mV dropout at 600mA load current of 4.5V output and are available in voltages ranging from 3.2V to 4.5V with 0.1 V per step (custom voltage is considerable at request).

The YB1231 regulators are optimized to work with low-ESR and low cost ceramic capacitors, reducing the amount of board space critical in hand-held devices. The YB1231 requires only 2.2μF output capacitor for stability with any load and consumes less than 1μA in shutdown mode.

Built-in thermal shutdown and short-circuit protect offer secure protection against fault operation. The YB1231 regulators are available in SOT-23 / SOT-25 / SOT-89 packages.

Features

2.0% Accuracy Output Voltage

Output Voltage Range 3.2V ~ 4.5V

Low-Noise Low-Drop-Out

Stable with 2.2μF Ceramic Capacitor for

Any Load

Typical Output Current : 600mA

Low Quiescent Current : ~100μA

440mV Dropout at 600mA Load (4.5V)

Only Need Input and Output Capacitors

Power Saving Shutdown Mode (<1μA)

Thermal Protection Shutdown

Built-In Internal Soft-Start

Output Short-circuit Current Limit Protection

Green package (RoHS) available

Applications

PDA, Palmtops and Notebook Computers

DSC, Handset Camera Modules

PCMCIA Cards, PC Cameras

USB Based Portable Devices (MP3, PMP)

GSM/GPRS/3G RF Transceiver Modules

Wireless LANs

Bluetooth Portable Radios

Typical Application Circuit

 

 

 

 

 

 

 

 

 

 

Figure 1-1: SOT-25 Application Circuit

 

Figure 1-2: SOT-23/SOT-89 Application Circuit

 

 

 

 

YB1231 Rev.1.6

www.yobon.com.tw

1

YB1231

HV600mA, Low-Noise LDO Regulator

Pin Configuration

Figure 2: Pin Configuration

Pin Description

Table 1

Name

Description

VIN

Unregulated input supply. Bypass with a capacitor to GND.

 

 

GND

Ground pin.

 

 

EN

Pull high to enable the regulator.

 

 

VOUT

Regulated output voltage. Bypass with a capacitor to GND.

 

 

YB1231 Rev.1.6

www.yobon.com.tw

2

Yobon YB1231ST23X320, YB1231ST23X330, YB1231ST23X340, YB1231ST23X350, YB1231ST23X360 Schematic

YB1231

HV600mA, Low-Noise LDO Regulator

Ordering Information

Marking Information

Absolute Maximum Ratings (Note 1)

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

 

- 0.3V to 6V

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

Recommended Operating Conditions

 

(Note 2)

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

2.0V to 5.5V

Operating Temperature........

-40 to +85

Thermal In formation

(Note 3)

Thermal Resistance (SOT-23/25, θJA)

... 280 /W

Thermal Resistance (SOT-89, θJA).........

180 /W

Internal Power Dissipation (SOT-23/25, PD) . 0.4W

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

Note:

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.

YB1231 Rev.1.6

www.yobon.com.tw

3

YB1231

HV600mA, Low-Noise LDO Regulator

Electrical Characteristics

Table 2 VIN = ( VOUT + 1V ), CIN = COUT = 2.2μF, VEN = VIN, TA=25°C, unless otherwise noted.

Description

Symbol

Test Conditions

MIN

TYP

MAX

Units

 

 

 

 

 

 

 

Input Voltage Range

VIN

 

2.0

 

5.5

V

 

 

 

 

 

 

 

Output Voltage

VOUT

Predefined

3.2

 

4.5

V

 

 

 

 

 

 

 

Output Voltage Accuracy

VOUT

IOUT = 10mA

-2.0

 

+2.0

%

Output Current Limit

ISC

Short-Circuit Output

 

420

 

mA

 

 

 

 

 

 

 

 

 

VOUT = 4.5V, IOUT = 600mA

 

440

 

 

 

 

VOUT = 4.0V, IOUT = 600mA

 

470

 

 

Dropout Voltage (Note 1)

VDROP

VOUT = 3.6V, IOUT = 600mA

 

500

 

mV

 

 

VOUT = 3.3V, IOUT = 600mA

 

530

 

 

 

 

VOUT = 3.2V, IOUT = 600mA

 

550

 

 

Ground Current

IG

Iground = IIN - IOUT

 

100

160

μA

Line Regulation

VLINE

VIN=(VOUT+1V) to 5.5V, IOUT=10mA

 

0.4

 

%/V

Load Regulation

VLOAD

IOUT = 1mA to 600mA

 

1.7

 

%

Shutdown Supply Current

ISD

EN = 0V

 

 

1

μA

 

 

 

 

 

 

 

 

 

f = 100Hz, IOUT = 10mA

 

51

 

 

Ripple Rejection (PSRR)

PSRR

f = 1KHz, IOUT = 10mA

 

51

 

dB

 

 

f = 10KHz, IOUT = 10mA

 

45

 

 

Shutdown Exit Delay (Note 2)

 

VOUT = 3.3V, Rload = 11 ohm

 

36

100

μs

EN Logic Low Level

VIL

VIN = 2.0V to 5.5V

 

 

0.4

V

EN Logic High Level

VIH

VIN = 2.0V to 5.5V

1.5

 

VIN

V

EN Input Bias Current

IBEN

VIN = EN = VOUT +1V

 

0.01

 

μA

Thermal Shutdown

TSD

Shutdown Temperature

 

160

 

°C

 

 

 

 

 

 

 

Thermal Hysteresis

THYS

VOUT = 3.3V, IOUT = 100mA

 

20

 

°C

Note :

1.The drop out 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.

2.Time needed for VOUT to reach 90% of final value.

YB1231 Rev.1.6

www.yobon.com.tw

4

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