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YB1210 – 300mA

Ultra-Low-Noise, High PSRR LDO Regulator

Description

Features

High Accuracy +-2% Output Voltage

Ultra-Low-Noise Low-Drop-Out

Regulator with 1.8/2.5/2.6/2.8/3.0V/3.3V

Preset Outputs

Stable with 0.47µF Ceramic Capacitor

for Any Load

Allowable Output Current: 300mA

Low Quiescent Current: ~90µA

450mV Dropout at 250mA Load (3.3V)

Only Need Input and Output Capacitors

Power Saving Shutdown Mode (<1µA)

Thermal Protection Shutdown

Built-In Internal Soft-Start

The YB1210 family consists of a series of

300mA ultra-low-noise, low dropout (LDO)

linear regulators especially designed for

battery-powered

RF

and

wireless

applications. The YB1210 regulator

achieves a low 450mV dropout at 250mA

load current of 3.3V output, ultra-low output

voltage noise of 15µVrms and PSRR of

57dB at 1KHz.

The YB1210 regulators are also optimized

to work with low-ESR and low cost ceramic

capacitors reducing the amount of board

space critical in hand-held devices. The

YB1210 requires only 0.47 µF output

capacitor for stability with any load. The

YB1210 consumes less than 1µA in

shutdown mode.

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

Other features include high output voltage

accuracy and current limiting protection.

The YB1210 regulators are available in

SOT-23 / SOT-25 / SOT-89 packages.

Bluetooth Portable Radios

Typical Application Circuitry

INPUT

OUTPUT PRESET

OUT

YB1210

IN

Cin=0.47uF

ON

Cout=0.47uF

EN

NC or

OFF

Bypass

Cbypass

=30nF

GND

Figure 1-1. SOT-25 application circuit

www.yobon.com.tw

YB1210 MRev.1.5

1

YB1210 – 300mA

Ultra-Low-Noise, High PSRR LDO Regulator

Figure 1-2. SOT-23 / SOT-89 application circuit

Pin Configuration

Pin Description

Table 1

Name

GND

SOT-89 Description

Ground Pin

1

Name

IN

SOT-25 Description

Unregulated Input Supply

Ground Pin

1

2

3

IN

OUT

Name

OUT

GND

IN

Unregulated Input Supply

Regulated Voltage Output

SOT-89R Description

Regulated Voltage Output

Ground Pin

2

GND

EN

3

Pull High To Enable The Regulator

No

Connection

For

Normal

1

N.C. or

Bypass

Operation Or Noise Bypass For

Ultra-Low-Noise

Operation By A 30nF Cap. To GND

4

2

5

1

OUT

Name

GND

OUT

IN

Regulated Voltage Output

SOT-23 Description

Ground Pin

3

Unregulated Input Supply

2

Regulated Voltage Output

Unregulated Input Supply

3

YB1210 MRev.1.5

www.yobon.com.tw

2

YB1210 – 300mA

Ultra-Low-Noise, High PSRR LDO Regulator

Ordering Information

Marking Information

YB1210 MRev.1.5

www.yobon.com.tw

3

YB1210 – 300mA

Ultra-Low-Noise, High PSRR LDO Regulator

Absolute Maximum Ratings

Recommended Operating Conditions

Supply Voltage........................................-0.3V to 7.0V

Output Voltage...............................-0.3V to (V_IN+0.3V)

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

Junction Temperature Range........................... +150℃

Storage Temperature Range ............. -65℃ to +150℃

Lead Temperature............................................ +250℃

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

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

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

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

Input Supply Voltage................................ 2V to 6.0V

Operating Temperature..................... -40℃ to +85℃

ESD Susceptibility (HBM).................................. 2KV

ESD Susceptibility (MM)...................................200V

Electrical Characteristics

T_A= 25℃, V_IN= ( V_OUT+ 1 V ), C_IN= C_{OU T}= 0.47µF, V_EN= V_IN

Table 3

Function Parameter

Conditions

Min

Typ

Max

Units

Input Voltage Range

Output Voltage

2.0

1.8

6.0

3.3

V

Predefined (metal masks)

Output Voltage Accuracy

Output Current Limit

I

_OUT= 10mA

-2.0

+2.0

250

550

590

600

620

640

900

150

0.5

%

Short-circuit output

200

450

470

500

520

540

800

90

mA

V_OUT= 3.3V, I_OUT= 250mA

V_OUT= 3.0V, I_OUT= 250mA

V_OUT= 2.8V, I_OUT= 250mA

V_OUT= 2.6V, I_OUT= 250mA

V_OUT= 2.5V, I_OUT= 250mA

Dropout Voltage ^{(See Note 1)}

mV

V

_OUT= 1.8V, I_OUT= 250mA

Ground Current

I_OUT= 0 mA

µA

%/V

%

Line Regulation

V_IN= (V_OUT+1V) to 6.0V, I_OUT= 10 mA

I_OUT= 1mA to 250mA

EN=0V

0.3

Load Regulation

1.2

3

Shutdown Supply Current

~0.01

µA

YB1210 MRev.1.5

www.yobon.com.tw

4

YB1210 – 300mA

Ultra-Low-Noise, High PSRR LDO Regulator

f = 100Hz, I_OUT=1mA

55

57

55

Ripple Rejection (PSRR)

Output Noise Voltage

dB

f = 1KHz, I_OUT=1mA

f = 10KHz, I_OUT=1mA

f = 100Hz to 100KHz,

Iload=10mA, Bypass=0nF

f = 100Hz to 100KHz,

Iload=10mA, Bypass=30nF

Rload=50ohm

45

µVrms

15

45

Shutdown Exit Delay ^{(See Note 2)}

EN Logic Low Level

300

0.4

µs

V

V_IN=2.0V to 5.5V

EN Logic High Level

V_IN=2.0V to 5.5V

1.2

VIN

V

EN Input Bias Current

Thermal Shutdown

V_IN=5.5V, SHDN=0V or 6V

Shutdown Temperature

0.01

160

20

µA

℃

Thermal-Shutdown Hysteresis

Note1 : The drop out voltage varies depending on output voltage selection

Dropout is defined as V_IN– V_OUTwhen V_OUTis 100mV below V_OUTwhere Vin=Vout + 1V for nominal

V_OUT

.

Note 2: Time needed for V_OUTto reach 90% of final value.

Typical Characteristics

At T_A=25℃, V_IN=(V_OUT+0.5V), C_IN=C_OUT=0.47µF, V_EN=V_IN, unless otherwise noted.

Ground Current vs. Input Voltage

Dropout Voltage vs Load Current

900

800

700

600

500

400

300

200

100

0

140

120

100

80

Vo=1.8V

Vo=2.5V

Vo=3.3V

60

40

20

Vo=3.3V

0

0.0

1.0

2.0

3.0

4.0

5.0

Input Voltage (V)

0

10 30 50 70 90 110 130 150 170 190 210 230 250

Load Current (mA)

YB1210 MRev.1.5

www.yobon.com.tw

5

YB1210 – 300mA

Ultra-Low-Noise, High PSRR LDO Regulator

Output Voltage vs. Temperature

2.89

2.88

2.87

2.86

ILoad=1mA

2.85

2.84

2.83

2.82

ILoad=80mA

2.81

25

35

45

55

65

75

85

Temperature

(

)

℃

Dropout Voltage vs Temperature

700

600

500

400

300

200

100

0

Vo=2.8V

85℃

25℃

0

10 30 50 70 90 110 130 150 170 190 210 230 250

Load Current (mA)

Shutdown Exit Delay

Vo=2.84V

Load=50

R

Ω

Shutdown

Voltage

YB1210 MRev.1.5

www.yobon.com.tw

6

YB1210 – 300mA

Ultra-Low-Noise, High PSRR LDO Regulator

Line Transient Response

Load Transient Response

5V

3.34V

C_IN= 0.47µF

C_OUT= 0.47µF

V_IN= 3.34V

C_IN= 0.47µF

C_OUT= 0.47µF

I_Load= 100µA

100mA

100µA

Shutdown Delay

Shutdown

Voltage

Vout

^RLoad=50Ω

YB1210 MRev.1.5

www.yobon.com.tw

7

YB1210 – 300mA

Ultra-Low-Noise, High PSRR LDO Regulator

Functional Block Diagram

IN

SHUTDOWN AND

POWER-ON CONTROL

EN

ERROR

AMP

MOS DRIVER

WITH _LIMIT

P

OUT

THERMAL

SENSOR

REFERENCE

AND NOISE BYPASS

GND

Figure 3. Block Diagram

Functional Description

The YB1210 is an ultra-low-noise,

low-quiescent current, low-dropout linear

regulator. It is supplied in a SOT-23 /

SOT-25 / SOT-89 package for different

applications. These devices can supply

loads up to 250mA. As shown in the

Functional Block Diagram, the YB1210

consists of a reference and noise bypass

circuit, error amplifier, output drive

transistor, internal feedback voltage divider,

thermal sensor, and short circuit current

limiter. The internal reference is connected

to the error amplifier’s inverting input. The

error amplifier compares this reference with

the feedback voltage and amplifies the

difference. If the feedback voltage is lower

feedback voltage is too high, the pass

transistor gate is pulled high, allowing less

current to pass to the output. The parts are

available with preset output voltages

ranging from 1.8V to 3.3V.

Stability

The YB1210 is a high performance LDO

emphasizing stability with low output

capacitance. It is able to maintain stability

with an output capacitor as low as 0.47uF.

The output capacitor can also be increased

to optimize performance. The YB1210 will

remain stable and in regulation with no load,

unlike many other voltage regulators.

Internal P-Channel Pass Transistor

than

the

reference

voltage,

the

pass-transistor gate is pulled low. This

allows more current to pass to the output

and increases the output voltage. If the

The YB1210 features a low impedance

P-channel MOSFET pass transistor. This

provides several advantages over similar

YB1210 MRev.1.5

www.yobon.com.tw

8

YB1210 – 300mA

Ultra-Low-Noise, High PSRR LDO Regulator

designs using a PNP pass transistor,

including low operating power and longer

battery life. The YB1210 consumes only

90µA of quiescent current under most

conditions.

up, the output capacitor and output load are

charged with a reduced output current.

Shortly after the initial power up, the

soft-start feature is terminated and normal

operation is resumed.

Output Short-Circuit Current Limit

Application Information

The YB1210 includes a current limiter,

which monitors and controls the pass

transistor’s gate voltage, limiting the output

current to about 200mA, for example, in a

short-circuit output situation.

Enable/Shutdown

The YB1210 comes with an active-high

enable pin that allows the regulator to be

enabled. Forcing the enable pin low

disables the regulator and puts it into the

shutdown mode. This pin cannot be left

floating as it may cause an undetermined

state.

Shutdown

The YB1210 also features a low-power

active shutdown mode. It has a switch that

turns off the device when disabled. This

allows the output capacitor and load to

discharge and de-energize the load. In the

shutdown mode, the internal functional

blocks, such as voltage reference and the

error amplifier, are turned off completely,

and the quiescent current is less than 1µA.

Input/Output Capacitor

It is recommended to use a 0.47µF

capacitor on the YB1210 input and a

0.47µF capacitor on the output. For high

regulation performance, larger input

capacitor values and lower ESRs provide

better noise rejection and line-transient

response. The output noise, load-transient

response, stability, and power-supply

rejection can be improved by using large

output capacitors. Low ESR ceramic

capacitors provide optimal performance

and save space.

Thermal Protection Shutdown

The thermal protection shutdown function

protects the device from operating in over

temperature condition. When the junction

temperature exceeds +160°C, the thermal

sensor signals the shutdown logic, turning

off the pass transistor and allowing the IC

to cool down. The thermal sensor turns the

pass transistor on again after the IC’s

junction temperature drops to +140°C.

Power Supply Rejection and Transient

Response

The PSRR and transient response can be

improved by increasing the values of the

input and output bypass capacitors, and

through passive filtering techniques.

Soft-Start Circuitry

The YB1210 includes a soft-start circuitry to

limit inrush current at turn-on. During power

YB1210 MRev.1.5

www.yobon.com.tw

9

YB1210 – 300mA

Ultra-Low-Noise, High PSRR LDO Regulator

SOT-25 Package Information

YB1210 MRev.1.5

www.yobon.com.tw

10

YB1210 – 300mA

Ultra-Low-Noise, High PSRR LDO Regulator

SOT-23 Package Information

NOTE:

1. ALL DIMENSIONS ARE IN MILLIMETERS.

2. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSION OR GATE BURRS SHALL NOT

EXCEED 0.25mm PER END.

DIMENSION E1 DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. INTERLEAD

FLASH OR PROTRUSION SHALL NOT EXCEED 0.25 PER SIDE.

3. THE PACKAGE TOP MAY BE SMALLER THAN THE PACKAGE

BOTTOM.

DIMENSIONS D AND E1 ARE DETERMINED AT THE OUTERMOST EXTREMES OF THE

PLASTIC BODY EXCLUSIVE OF MOLD FLASH, THE BAR BURRS. GATE BURRS AND

INTERLEAD FLASH, BUT INCLUDING ANY MISMATCH BETEEN THE TOP AND BOTTOM OF

THE PLASTIC BODY..

4. DIMENSION“b”

5. DOES NOT INCLUDE DAMBAR PROTRUSION.

ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.08mm

TOTAL IN EXCESS OF THE “b”DIMENSION AT MAXIMUM

MATERIAL CONDITION. THE DAMBAR CANNOT BE LOCATED

ON THE LOWER RADIUS OF THE FOOT . MINMUM SPACE BETWEEN

PROTRUSION AND AN ADJACENT LEAD SHALL NOT BE LESS

THAN 0.07mm

5. LEAD FRAME MATERIAL:EFTEC 64T

YB1210 MRev.1.5

www.yobon.com.tw

11

YB1210 – 300mA

Ultra-Low-Noise, High PSRR LDO Regulator

SOT-89 Package Information

YB1210 MRev.1.5

www.yobon.com.tw

12

型号:	YB1210ST89R120
生命周期：	Contact Manufacturer
Reach Compliance Code：	unknown
风险等级：	5.69
调节器类型：	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Base Number Matches：	1

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