BL919818BACRN [BELLING]

300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator;


型号：	BL919818BACRN
厂家：	BELLING
描述：	300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator
文件：	总14页 (文件大小：1183K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

BL9198

300mA Ultra-low Noise, Ultra-Fast

CMOS LDO Regulator

Hand-Held Instruments

PCMCIA Cards

MP3/MP4/MP5 Players

Portable Information Appliances

FEATURES

Ultra-low Noise for RF Application

Ultra-Fast Response in Line/Load

Transient

DESCRIPTION

<0.01µA

Shutdown.

Standby

Current

When

The BL9198 is designed for portable RF and

wireless applications with demanding perfor-

mance and space requirements. The BL9198

performance is optimized for battery-powered

systems to deliver ultra low noise and low

quiescent current. Regulator ground current

increases only slightly in dropout, further

prolonging the battery life. The BL9198 also

works with low-ESR ceramic capacitors,

reducing the amount of board space

necessary for power applications, critical in

hand-held wireless devices. The BL9198

consumes less than 0.01µA in shutdown

mode and has fast turn-on time less than

50µs. The other features include ultra low

Low Dropout:210mV@300mA

Wide Operating Voltage Ranges:2V to

TTL-logic-Controlled Shutdown Input

Low Temperature Coefficient

Current Limiting Protection

Thermal Shutdown Protection

Only 1µF Output Capacitor Required for

Stability

High Power Supply Rejection Ratio

Custom Voltage Available

Fast output discharge

Available in 5-Lead SOT-23 andSC-70

Package

dropout voltage, high output

accuracy,

APPLICATIONS

current limiting protection, and high ripple

rejection ratio. Available in the 5-lead SC-70

and SOT-23 packages.

Cellular and Smart Phones

Battery-Powered Equipment

Laptop, Palmtops, Notebook Computers

ORDERING INFORMATION

BL9198 XX X X X XXX

TYPICAL APPLICATION

BL9198 28 AA

VIN

VOUT

Package:

RN: SOT-23-5

URN: SC-70-5

VOUT

VIN

1uF

GND

Features

P: Standard (default, lead free)

C: Customized

BL9198

Chip

Enable

Enable Option:

A: active high with internal 8 MΩ pulldown

B: active low with internal 8 MΩ pull up

Output Voltage Accuracy

A: ±1%

B: ±2%

Application hints:

Output capacitor (C2 2.2uF) is recommended

in BL9198-1.2V, BL9198-1.3V, BL9198-1.5V

and BL9198-1.8V application to assure the

stability of circuit.

Output Voltage:

12: 1.2V 13:1.3V 15: 1.5V 18:1.8V

25:2.5V 27:2.7V 28:2.8V 285: 2.85V

30: 3.0V 32:3.2V 33:3.3V 50:5.0V

CT: custom fixed output (50mV step)

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BL9198 Rev 2.1

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BL9198

300mA Ultra-low Noise, Ultra-Fast

CMOS LDO Regulator

Absolute Maximum Rating ^{(Note 1)}

Input Supply Voltage (VIN)

EN Pin Input Voltage

Output Voltages

-0.3V to +6V

Maximum Junction Temperature

150°C

(Note2)

-0.3V to VIN

-0.3V to VIN+0.3V

300mA

Operating Temperature Range

Storage Temperature Range

Lead Temperature (Soldering, 10s)

-40°C to85°C

-65°C to 125°C

300°C

Output Current

Thermal Resistance ^(Note4)

Ө_JC

Package Information

Ө_JA

SOT23-5/SC70-5

TOP VIEW

Package

SOT23-5

SC70-5

130°C/W

170°C/W

250°C/W

333°C/W

VIN

GND

VOUT

Part Number

Top Mark

(Note3)

Temp Range

BL9198-12

BL9198-13

BL9198-15

BL9198-18

BL9198-25

BL9198-27

BL9198-28

-40°C to +85°C

D A Y W

D B Y W

D C Y W

D D Y W

D E Y W

D F Y W

D G Y W

BL9198-285

D H Y W

-40°C to +85°C

BL9198-30

BL9198-32

BL9198-33

BL9198-50

D I Y W

D J Y W

D K Y W

D L Y W

-40°C to +85°C

1.2V

1.3V

1.5V

1.8V

2.5V

2.7V

2.8V

2.85V

3.0V

3.2V

3.3V

5.0V

Year

2014

2015

2016

ꢀ

2020

2021

ꢀ

Week

ꢀ

Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.

Note 2: The BL9198 is guaranteed to meet performance specifications from 0°C to 70°C. Specifications over the –40°C

to 85°C operating temperature range are assured by design, characterization and correlation withstatistical

process controls.

Note 3: D: Product code of BL9198 A-L: Voltage code Y: Year of wafer manufacturing W: Week of wafer manufacturing.

Note 4: Thermal Resistance is specified with approximately 1 square of 1 ozcopper.

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BL9198 Rev 2.1

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BL9198

300mA Ultra-low Noise, Ultra-Fast

CMOS LDO Regulator

Pin Description

NAME

VIN

GND

FUNCTION

Power Input Voltage.

Ground.

Chip Enable Pin with two options.

A: active high with internal 8 MΩ pull down

B: active low with internal 8 MΩ pull up

No Connection.

VOUT

Output Voltage.

Block Diagram

VIN

Quick

Start

Quick

Start

Error

Amplifier

VOUT

Current Limit

And

Thermal

Protection

Current Limit

And

Thermal

Protection

VREF

GND

BL9198 XX XA

BL9198 XX XB

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BL9198 Rev 2.1

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BL9198

300mA Ultra-low Noise, Ultra-Fast

CMOS LDO Regulator

Electrical Characteristics ^{(Note 5)}

(V_IN=3.6V, EN=V_IN,C_IN=C_OUT=1µF, T_A=25 , unless otherwise noted.)

Parameter

Input Voltage

Symbol

Conditions

MIN

TYP

MAX

unit

V_IN

Output Voltage Accuracy

-1

-2

V_IN=3.6V,

I_OUT=1mA

∆V_OUT

(Note 6)

I_LIM

I_Q

Current Limit

Quiescent Current

400

430

µA

R_LOAD=1Ω

V_EN>1.2V, I_OUT=0mA

130

180

I_OUT=200mA,

V_OUT=2.8V

I_OUT=300mA,

V_OUT=2.8V

V_IN=3.6V to 5.5V

I_OUT=1mA

130

210

0.05

Dropout Voltage

V_DROP

300

Line Regulation^{(Note 7)}

Load Regulation^{(Note 8)}

∆V_LINE

∆V_LOAD

TC_VOUT

0.17

%/V

%/A

1mA<I_OUT<300mA

Output Voltage^{(Note 9)}

ppm/

I_OUT=1mA

±60

Temperature Coefficient

V_EN=GND,

Shutdown

V_EN=GND or V_IN

V_IN=3V to 5.5V,

Shutdown

V_IN=3V to 5.5V,

Start up

10Hz to100KHz,

I_OUT=200mA

Standby Current

I_STBY

I_IBSD

0.01

µA

EN Input Bias Current

500

0.4

Logic Low

Logic High

V_IL

V_IH

e_NO

Input

Threshold

1.2

Output Noise

Voltage

100

µV_RMS

Power

Supply

Rejection

Ratio

f=217Hz

-78

-72

-52

f=1KHz

PSRR

I_OUT=100mA

f=10KHz

Thermal Shutdown

Temperature

Shutdown, Temp

increasing

T_SD

165

Thermal Shutdown

Hysteresis

T_SDHY

Note 5: 100% production test at +25°C. Specifications over the temperature range are guaranteed by design and

characterization.

Note 6: This IC includes two kinds of output voltage accuracy versions. A: ±1%, B: ±2%.





V_OUT

−V_OUT

Note 7: Line regulation is calculated by

×100





LINE

∆V





∆

V_IN×V_OUT

(normal

)





Where V_OUT1is the output voltage when V_IN=5.5V, and V_OUT2is the output voltage when V_IN=3.6V,

V_IN=1.9V . V_OUT(normal) =2.8V.













V_OUT

−V_OUT

Note 8: Load regulation is calculated by

×100

LOAD

∆V





∆

I_OUT×V_OUT

(normal

)

Where V_OUT1is the output voltage when I_OUT=1mA, and V_OUT2is the output voltage when I_OUT=300mA. I_OUT=0.299A,

V_OUT(normal)=2.8V.

∆V_OUT

Note 9: The temperature coefficient is calculated by

TC_V

OUT

∆T ×V_OUT

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BL9198 Rev 2.1

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BL9198

300mA Ultra-low Noise, Ultra-Fast

CMOS LDO Regulator

Typical Performance Characteristics

Output Voltage Vs.Temperature

QuiescentCurrentVs.Temperature

140

130

120

110

3.0

IN=3.6V

=3.6V

=1uF

OUT

=1uF

OUT

2.9

2.8

2.7

2.6

2.5

100

-50

-25

100

125

-50

-25

100

125

Temperature(°C)

Temperaute(

°C)

DropoutVoltage Vs. Load Current

PSRR

-10

-20

300

IN=4.2V

IN=1uF,COUT=1uF,X7R

LOAD=1mA

LOAD=100mA

LOAD=200mA

=1uF

OUT

250

200

150

100

-30

-40

-50

-60

-70

-80

TJ=85

TJ=25

TJ=-40

°C

-90

1000

10000

100000

100

150

200

250

300

100

Load Current(mA)

Frequency(Hz)

ENPinShutdownThresholdVs.Temperature

1.05

CurrentLimitVs.InputVoltage

500

IN=COUT=1uF

480

460

440

420

400

380

360

340

320

300

V_IN=3.6V

OUT=2.8V

1.00

C_IN=C_OUT=1uF

0.95

0.90

0.85

0.80

0.75

-50

-25

100

125

3.0

3.5

4.0

4.5

5.0

5.5

6.0

Temperature(

Input Voltage(V)

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BL9198 Rev 2.1

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BL9198

300mA Ultra-low Noise, Ultra-Fast

CMOS LDO Regulator

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BL9198 Rev 2.1

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BL9198

300mA Ultra-low Noise, Ultra-Fast

CMOS LDO Regulator

OUT Vs.VIN

3.0

2.9

2.8

2.7

2.6

2.5

2.4

2.3

2.2

2.1

2.0

1.9

1.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

1.0

IN=COUT=1uF

ILoad=1mA

ILoad=100mA

ILoad=300mA

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

InputVoltage(V)

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BL9198 Rev 2.1

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BL9198

300mA Ultra-low Noise, Ultra-Fast

CMOS LDO Regulator

down mode when the voltage on the EN

pin falls below 0.4 volts. For to protect the

system, the BL9198 have a quick dis-

charge function. If the enable function is

not needed in a specific application, it may

be tied to V_INto keep the LDO regulator in

a continuously on state.

Applications Information

Like any low-dropout regulator, the ex-

ternal capacitors used with the BL9198

must be carefully selected for regulator

stability and performance. Using a capac-

itor whose value is > 1µF on the BL9198

input and the amount of capacitance can

be increased without limit. The input cap-

acitor must be located a distance of not

more than 0.5 inch from the input pin of the

IC and returned to a clean analog ground.

Any good quality ceramic or tantalum can

be used for this capacitor. The capacitor

with larger value and lower ESR (equi-

valent series resistance) provides better

PSRR and line-transient response. The

output capacitor must meet both requi-

rements for minimum amount of capa-

citance and ESR in all LDOs application.

The BL9198 is designed specifically to

work with low ESR ceramic output capa-

citor in space-saving and performance

consideration. Using a ceramic capacitor

whose value is at least 1µF with ESR is >

25mΩ on the BL9198 output ensures

stability. The BL9198 still works well with

output capacitor of other types due to the

wide stable ESR range. Output capacitor of

larger capacitance can reduce noise and

improve load transient response, stability,

and PSRR. The output capacitor should be

located not more than 0.5 inch from the

Thermal Considerations

Thermal protection limits power dissipation

in BL9198. When the operation junction

temperature exceeds 165°C, the OTP

circuit starts the thermal shutdown function

turn the pass element off. The pass

element turns on again after the junction

temperature cools by 30°C.

For continue operation, do not exceed

absolute maximum operation junction

temperature 125°C. The power dissipation

definition in device is:

P_D(MAX) = ( T_J(MAX) − T_A)/θ_JA

Where T_J(MAX) is the maximum operation

junction temperature 125°C, T_Ais the

ambient temperature and the θ_JAis the

junction to ambient thermal resistance. For

recommended operating conditions spe-

cification of BL9198, where T_J(MAX) is the

maximum junction temperature of the die

(125°C) and T_Ais the maximum ambient

temperature. The junction to ambient the-

rmal resistance (θ_JAis layout dependent)

for SOT-23-5 package is 250°C/W, SC-70-

OUT pin of the BL9198 and returned to a

clean analog ground.

5 package is 333°C/W, on

standard

JEDEC 51-3 thermal test board. The max-

imum power dissipation at T_A= 25°C can

be calculated by following formula:

Enable Function

The BL9198 features an LDO regulator en-

able/disable function. To assure the LDO

regulator will switch on; the EN turn on

control level must be greater than 1.2 volts.

The LDO regulator will go into the shut-

P_D(MAX) = (125°C−25°C)/333 = 300mW

(SC-70-5)

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BL9198 Rev 2.1

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BL9198

300mA Ultra-low Noise, Ultra-Fast

CMOS LDO Regulator

P_D(MAX) = (125°C−25°C)/250 = 400mW

(SOT-23-5)

The maximum power dissipation depends

on operating ambient temperature for fixed

T_J(MAX) and thermal resistance θ_JA. It is

also useful to calculate the junction of

temperature of the BL9198 under a set of

specific conditions. In this example let the

Input voltage V_IN=3.3V, the output current

Io=300mA and the case temperature

T_A=40°C measured by a thermal couple

during operation. The power dissipation for

the V_OUT=2.8V version of the BL9198 can

be calculated as:

P_D= (3.3V−2.8V) ×300mA+3.6V×100uA

=150mW

And the junction temperature, T_J, can be

calculated as follows:

T_J=T_A+P_D×θ_JA=40°C+0.15W×250°C/W

=40°C+37.5°C=77.5°C<T_J(MAX) =125°C

For this operating condition, T_Jis lower

than the absolute maximum operating

junction temperature,125°C, so it is safe to

use the BL9198 in this configuration.

Layout considerations

To improve ac performance such as PSRR,

output noise, and transient response, it is

recommended that the PCB be designed

with separate ground planes for V_INand

V_OUT, with each ground plane connected

only at the GND pin of the device.

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BL9198 Rev 2.1

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BL9198

300mA Ultra-low Noise, Ultra-Fast

CMOS LDO Regulator

BL9198-2.8V Layout Circuit

VIN

VOUT

VIN

BL9198

VOUT

1uF

VIN

1uF

GND

BOTTOM Layer Layout

TOP Layer Layout

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BL9198 Rev 2.1

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BL9198

300mA Ultra-low Noise, Ultra-Fast

CMOS LDO Regulator

Package Description

Dimensions In Millimeters

Dimensions In Inches

Symbol

Min

Max

Min

Max

0.800

0.000

1.150

0.150

1.800

1.100

0.100

1.350

0.400

2.450

2.250

0.031

0.000

0.045

0.006

0.071

0.044

0.004

0.054

0.016

0.096

0.089

0.650

0.026

0.080

0.210

0.260

0.460

0.003

0.008

0.010

0.018

SC-70-5 Surface Mount Package

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BL9198 Rev 2.1

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BL9198

300mA Ultra-low Noise, Ultra-Fast

CMOS LDO Regulator

Package type

SC70-5

Number of devices per reel

3000

Tape dimension

Taping reel dimension

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BL9198 Rev 2.1

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BL9198

300mA Ultra-low Noise, Ultra-Fast

CMOS LDO Regulator

Dimensions In Millimeters

Dimensions In Inches

Symbol

Min

Max

Min

Max

0.889

0.000

1.397

0.356

2.591

2.692

0.838

0.080

0.300

1.295

0.152

1.803

0.559

2.997

3.099

1.041

0.254

0.610

0.035

0.000

0.055

0.014

0.102

0.106

0.033

0.003

0.012

0.051

0.006

0.071

0.022

0.118

0.122

0.041

0.010

0.024

SOT-23-5 Surface Mount Package

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BL9198 Rev 2.1

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BL9198

300mA Ultra-low Noise, Ultra-Fast

CMOS LDO Regulator

Package type

SOT23-5

Number of devices per reel

3000

Tape dimension Default: Type I

Type I

Type II

Taping reel dimension

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BL9198 Rev 2.1

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BL919818BACRN [BELLING]

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