YB1210ST25R180全新原装原理图各脚功能电路原理芯片引脚定义-中国IC网-芯三七

YB1210R

300mA, Ultra-Low-Noise, High PSRR LDO Regulator

Description

Features

The YB1210R is a series of ultra-low-noise,

low dropout (LDO) linear regulators with

2.0% output voltage accuracy. The

YB1210R regulators achieve a low 320mV

dropout at 300mA load current of 3.3V

output and are available in voltages

ranging from 1.2V to 3.6V with 0.1 V per

step (custom voltage is considerable at

request).

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: ~60μA

320mV Dropout at 300mA 3.3V Output

Stable with 1.0μF Ceramic Capacitor

Only Need Input and Output Capacitors

Thermal Protection Shutdown

Output Short-Circuit Current Limit

Built-In Internal Soft-Start

The YB1210R regulators are optimized to

work with low-ESR and low cost ceramic

capacitors, reducing the amount of board

space critical in portable devices. The

YB1210R requires only 1.0μF output

capacitor for stability with any load and

consumes less than 1μA in shutdown

mode.

Green Package (RoHS) Available

Applications

PDA, Notebook, PC Computers

DSC, Handset Camera Modules

PCMCIA Cards, PC Cameras

USB Based Portable Devices

GSM/GPRS/3G RF Transceiver

Wireless LANs

Built-in thermal shutdown and short-circuit

protect offer secure protection against fault

operation. The YB1210R regulators are

available in SOT-23 / SOT-25 / SOT-89

packages.

Bluetooth Portable Radios

Battery-Powered Devices

Typical Application Circuit

Figure 1-1: SOT-25 Application Circuit

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

YB1210R Rev.1.6

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YB1210R

300mA, Ultra-Low-Noise, High PSRR LDO Regulator

Pin Configuration

Figure 2: Pin Configuration

Pin Description

Table 1

Name

Description

VIN

GND

EN

Unregulated input supply. Bypass with a capacitor to GND.

Ground pin.

Pull high to enable the regulator.

N.C. or

BYPASS

Connect a 33nF capacitor to GND for low noise operation or N.C.

Regulated output voltage. Bypass with a capacitor to GND.

VOUT

YB1210R Rev.1.6

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2

YB1210R

300mA, Ultra-Low-Noise, High PSRR LDO Regulator

Ordering Information

Marking Information

Absolute Maximum Ratings (Note 1)

Recommended Operating Conditions

(Note 2)

Input Supply Voltage............... 2.0V to 5.5V

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

Supply Voltage............................ -0.3V to 6V

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℃

ESD Susceptibility (HBM)………………..2KV

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

Thermal In formation

(Note 3)

Thermal Resistance (SOT23/25, θ_JA).... 280℃/W

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

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

Internal Power Dissipation (SOT-89,P_D) 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. θ_JAis measured in free air at T_A= 25℃ on a low effective thermal conductivity board.

YB1210R Rev.1.6

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3

YB1210R

300mA, Ultra-Low-Noise, High PSRR LDO Regulator

Electrical Characteristics

Table 2

V_IN= ( V_OUT+ 1V ), C_IN= C_OUT= 1.0μF, V_EN= V_IN, T_A=25°C, unless otherwise noted.

Description

Symbol

Test Conditions

MIN TYP MAX Units

Input Voltage Range

Output Voltage

V_IN

2.0

1.2

-2.0

0

5.5

3.6

V

V_OUT

Predefined

I_OUT= 10mA, V_OUT≧ 1.3V

I_OUT= 10mA, V_OUT= 1.2V

Short-Circuit Output

+2.0

+4.0

ΔV_OUT

Output Voltage Accuracy

Output Current Limit

%

I_SC

200

300

350

450

700

870

60

mA

V_OUT= 3.6V, I_OUT= 300mA

V_OUT= 3.0V, I_OUT= 300mA

V_OUT= 2.5V, I_OUT= 300mA

V_OUT= 1.5V, I_OUT= 300mA

Dropout Voltage (Note 1)

V_DROP

mV

V_OUT= 1.2V, I_OUT= 300mA

Ground Current

I_G

Iground = I_IN- I_OUT

μA

%/V

%

ΔV_LINE

ΔV_LOAD

I_SD

Line Regulation

V_IN=(V_OUT+ 1V) to 5.5V, I_OUT=10mA

0.3

0.4

1.5

1

Load Regulation

I_OUT= 1mA to 300mA

1.0

Shutdown Supply Current

EN = 0V

μA

f = 1KHz, I_OUT= 1mA

50

60

40

20

2

Ripple Rejection (PSRR)

PSRR

dB

f = 10KHz, I_OUT= 1mA

f = 100KHz, I_OUT= 1mA

Rload = 100 ohm, Cbypass = 0nF

Rload = 100 ohm, Cbypass = 33nF

Rload = 10K ohm, V_OUT= 1.5V

Rload = 10K ohm, V_OUT= 1.2V

V_IN= 2.0V to 5.5V

50

μs

Start Up Delay (Note 2)

Shutdown Delay (Note 3)

3.5

ms

1

ms

1

EN Logic Low Level

EN Logic High Level

EN Input Bias Current

Thermal Shutdown

Thermal Hysteresis

V_IL

V_IH

0.4

V_IN

V

V_IN= 2.0V to 5.5V

1.2

I_BEN

T_SD

T_HYS

V_IN= EN = V_OUT+1V

0.01

160

20

μA

°C

Shutdown Temperature

Note :

1. The drop out voltage varies depending on output voltage selection. Dropout is defined as V_IN– V_OUTwhen

_OUTis 100mV below nominal V_OUTwhere V_IN= V_OUT+ 1V for nominal V_OUT

V

.

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

3. Time needed for V_OUTto discharge below 0.5V.

YB1210R Rev.1.6

www.yobon.com.tw

4

YB1210R

300mA, Ultra-Low-Noise, High PSRR LDO Regulator

Typical Performance Characteristics

V_IN= ( V_OUT+ 1V ), C_IN= C_OUT= 1.0μF, V_EN= V_IN, T_A=25°C, unless otherwise noted.

Dropout Voltage vs. Output Load

Ground Current vs. Input Voltage

Dropout Voltage vs. Temperature

Output Voltage vs. Temperature

YB1210R Rev.1.6

www.yobon.com.tw

5

YB1210R

300mA, Ultra-Low-Noise, High PSRR LDO Regulator

Load Transient Response

Line Transient Response

Start Up Delay (Cbypass=0nF)

Start Up Delay (Cbypass=33nF)

Shutdown Delay (V_OUT=1.2V)

Shutdown Delay (V_OUT=1.5V)

YB1210R Rev.1.6

www.yobon.com.tw

6

YB1210R

300mA, Ultra-Low-Noise, High PSRR LDO Regulator

PSRR vs. Frequency (1mA load)

PSRR vs. Frequency (10mA load)

YB1210R Rev.1.6

www.yobon.com.tw

7

YB1210R

300mA, Ultra-Low-Noise, High PSRR LDO Regulator

Function Block

Figure 3: Function Block

Functional Description

The YB1210R 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. YB1210R can supply loads up

to 300mA (typical operation, not maximum)

and output voltages are preset and ranging

from 1.2V to 3.6V.

feedback voltage and amplifies the

difference. If the feedback voltage is lower

than the reference voltage, the gate of the

pass-transistor is pulled low. This allows

more current to pass to the output and

increases the output voltage. If the

feedback voltage is too high, the gate of the

pass transistor is pulled high, allowing less

current to pass to the output.

As shown in the Functional Block Diagram,

the YB1210R consists of a reference and

noise bypass circuit, error amplifier, output

drive transistor, internal feedback voltage

divider, thermal sensor, and short circuit

current limiter.

Stability

The YB1210R is a high performance LDO

emphasizing stability with low output

capacitance. It is able to maintain stability

with an output capacitor as low as 1.0μF.

The output capacitor can also be increased

to optimize performance. The YB1210R will

remain stable and in regulation with no load,

unlike many other voltage regulators.

The internal reference is connected to the

error amplifier’s inverting input. The error

amplifier compares this reference with the

YB1210R Rev.1.6

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YB1210R

300mA, Ultra-Low-Noise, High PSRR LDO Regulator

Internal P-Channel Pass Transistor

between V_OUTand ground. When EN pin is

pulled low, the NMOS is activated by an

inverted signal from EN. The charge kept

on output capacitor is discharged quickly

through the NMOS. It prevents the system

from abnormal operation at the beginning

of shutdown mode.

The YB1210R features a low impedance

P-channel MOSFET pass transistor. This

provides several advantages over similar

designs using a PNP pass transistor,

including low operating power and longer

battery life. The YB1210R consumes only

60µA of quiescent current under most

conditions.

Soft-Start Circuitry

The YB1210R includes a soft-start circuitry

to limit inrush current at turn-on. During

power 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

The YB1210R 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.

Shutdown

Application Information

The YB1210R 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.

Enable/Shutdown

The YB1210R 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.

Input/Output Capacitor

Thermal Protection Shutdown

It is recommended to use a 1.0µF capacitor

on the YB1210R input and a 1.0µF

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.

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.

Auto-Discharge Circuitry

The YB1210R deploys a NMOS connecting

YB1210R Rev.1.6

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YB1210R

300mA, Ultra-Low-Noise, High PSRR LDO Regulator

Package Information (SOT-23)

E1

E

YB1210R Rev.1.6

www.yobon.com.tw

10

YB1210R

300mA, Ultra-Low-Noise, High PSRR LDO Regulator

Package Information (SOT-25)

YB1210R Rev.1.6

www.yobon.com.tw

11

YB1210R

300mA, Ultra-Low-Noise, High PSRR LDO Regulator

Package Information (SOT-89)

L

NOTICE:

y The information described herein is subject to change without notice.

y Yobon does not assume any responsibility for use of any circuitry or applications described herein, nor

does it convey any patent license.

YB1210R Rev.1.6

www.yobon.com.tw

12

型号:	YB1210ST25R360
生命周期：	Contact Manufacturer
Reach Compliance Code：	unknown
风险等级：	5.69
Is Samacsys：	N
调节器类型：	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Base Number Matches：	1

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