TS5204CX28 [TSC]

150mA Low Noise LDO Voltage Regulator; 150毫安低噪声LDO稳压器


型号：	TS5204CX28
厂家：	TAIWAN SEMICONDUCTOR COMPANY, LTD
描述：	150mA Low Noise LDO Voltage Regulator 150毫安低噪声LDO稳压器稳压器
文件：	总4页 (文件大小：142K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TS5204

150mA Low Noise LDO Voltage Regulator

Pin assignment

SOT-89

1. Output

2. Ground

3. Input

Low Power Consumption

Low Dropout Voltage 0.275V

SOT-23

1. Output

2. Input

3. Ground

General Description

The TS5204 series is an efficient linear voltage regulator with ultra low noise output, very low dropout voltage (typically

17mV at light loads and 165mV at 150mA), and very low power consumption (600uA at 100mA), providing high output

current even when the application requires very low dropout voltage. The TS5204 series is included a precision voltage

reference, error correction circuit, a current limited output driver, over temperature shutdown and revered battery

protection.

The TS5204 series is available in 3-pin SOT-23 and SOT-89 package.

Features

Ordering Information

ꢀ

Ultra low noise output.

Part No.

TS5204CXxx

TS5204CYxx

Operating Temp.

Package

SOT-23

Output current up to 150mA

Low dropout voltage

-40 ~ +125 ^oC

SOT-89

Note: Where xx denotes voltage option, available are

5.0V, 3.3V, 3.0V, 2.9V, 2.8V, 2.5V and 1.8V. Leave

blank for adjustable version. Contact factory for

additional voltage options.

Low power consumption

Internal current limit

Thermal shutdown protection

Applications

Typical Application Circuit

ꢀ

Cellular telephones

Palmtops, notebook computers

Battery powered equipment

Consumer and personal electronics

SMPS post regulator and DC to DC modules

High-efficiency linear power supplies

Absolute Maximum Rating (Note 1)

Input Supply Voltage

Vin

P_D

-20~ +20

Internal limited

220

Power Dissipation (Note 2)

Thermal Resistance

SOT-23

SOT-89

Өja

^oC/W

180

Operating Junction Temperature Range

Storage Temperature Range

-40 ~ +125

-65 ~ +150

^oC

T_STG

Lead Soldering Temperature (260 ^oC)

TS5204 series

1-4

2004/09 rev. A

Recommend Operating Rating (Note 3)

Input Supply Voltage

Vin

+2.5 ~ +16

Electrical Characteristics

Vin=Vo+1V, Io=100uA, Cout=1uF, Vce≥2V, Tj = 25 ^oC, unless otherwise specified.

Parameter

Conditions

Min

Typ

Max

1.01|Vo|

1.02|Vo|

Unit

Output Voltage

Vin=Vo + 1V

Vin=Vo + 1V, Io= 50mA

Output Voltage Temp. Coefficient (Note 4)

0.99|Vo|

Vout

0.98|Vo|

0.005

0.02

ppm/ ^oC

%/V

Line Regulation

Vo+1V ≤ Vin ≤ 16V

0.05

0.2

Load Regulation (Note 5)

Dropout Voltage (Note 6)

0.1mA ≤ Io ≤ 150mA

Io=100uA

%/V

Io=50mA

110

140

165

150

250

275

125

600

1000

1900

500

Io=100mA

Io=150mA

Ground Pin Current (Note 7)

Io=100uA

Io=50mA

350

600

1300

300

Io=100mA

Io=150mA

Output Current Limit

Vout=0V

Power Supply Rejection Ratio

Thermal Regulation (Note 8)

Output Noise

At f=100Hz, Io=100uA,

0.05

260

%/W

nV√Hz

Io=50mA, Cout=2.2uF,

470pF from bypass to Ground

Note 1: Exceeding the absolute maximum rating may damage the device.

Note 2: The maximum allowable power dissipation at any Ta is Pd(max) = [ Tj(max) - Ta] + Өja. Exceeding the

maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into

thermal shutdown.

Note 3: The device is not guaranteed to function outside its operating rating.

Note 4: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total

temperature range.

Note 5: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested

for load regulation in the load range from 1mA to 150mA. Changes in output voltage due to heating effects

are covered by the thermal regulation specification.

Note 6: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its

nominal value measured at 1V differential.

Note 7: Ground pin current is the regulator quiescent current plus pass transistor base current. The total current

drawn from the supply is the sum of the load current plus the ground pin current.

Note 8: Thermal regulation is defined as the change in output voltage at a time “t” after a change in power dissipation

is applied, excluding load or line regulation effects. Specifications are for a 150mA load pulse at Vin=16V for

t=10mS.

TS5204 series

2-4

2004/09 rev. A

Application Information

Thermal Characteristics

Input Capacitor Requirement

TS5204 series is designed to provide 150mA of

continuous current in a very small package. Maximum

power dissipation can be calculated based on the

output current and the voltage drop across the part. To

determine the maximum power dissipation of the

package, use the junction-ambient thermal resistance of

the device and the following basic equation:

An input capacitor of 1uF or greater is recommended

when the device is more than 10” away from the bulk

AC supply capacitance or when the supply is a battery.

Output Capacitor Requirement

The TS5204 series requires an output capacitor to

maintain stability and improve transient response is

necessary. 2.2uF minimum is recommended. Larger

values improve the regulator’s transient response. The

output capacitor value may be increased without limit.

The output capacitor should have an ESR (effective

series resistance) less than 5Ω and a resonant

frequency above 1MHz. Ultra low ESR capacitors can

cause a low amplitude oscillation on the output and/or

under damped transient response. Most of tantalum or

aluminum electrolytic capacitors are adequate; film

types will work. Since many aluminum electrolytic have

electrolytes that freeze at about –30^oC, solid tantalums

are recommended for operation below –25^oC. At lower

values of output current, less output capacitance is

required for output stability. The capacitor can be

reduced to 0.47uF for current below 10mA or 0.33uF

for currents below 1mA.

Pd(max) = [ Tj(max) – Ta ] /Θja

Tj(max) is the maximum junction temperature of the

die(125^oC), and Ta is the ambient operating

temperature. Θja is layout dependent, the actual power

dissipation of the regulator circuit can be determined

using the equation:

Pd = ( Vin – Vout ) * Iout + Vin * Ignd

Substituting Pd(max) for Pd and solving for the

operating conditions that are critical to the application

will give the maximum operating conditions for the

regulator circuit. For example, when operating the

TS5204CX33 at room temperature with a minimum

footprint layout, the maximum input voltage for a set

output current can be determined as follows:

Pd(max) = (125^oC – 25^oC) / 220^oC/W

Pd(max) = 455mW

No Load Stability

The junction to ambient thermal resistance for the

minimum footprint is 220^oC/W, the maximum power

dissipation must not be exceeded for proper operation.

Using the output voltage of 3.3V and an output current

of 150mA, the maximum input voltage can be

determined. Formt eh electrical characteristics table, the

maximum ground current for 150mA output current is

2.5mA.

The TS5204 series iwill remain stable and in regulation

with no load, unlike many other voltage regulators.

This is especially important in CMOS RAM keep alive

applications.

Dual Supply Operation

When used in dual supply systems where the regulator

load is returned to a negative supply, the output

voltage must be diode clamped to ground.

445mW = ( Vin – 3.3V ) * 150mA + Vin * 2.5mA

445mW = Vin * 150mA – 3.3 * 150mA + Vin * 2.5mA

445mW = Vin * 150mA – 495mW + Vin * 2.5mA

950mW = Vin * 152.5mA

Vin(max) = 6.23v

Therefore, a 3.3V application at 150mA of output

current can accept a maximum input voltage of 6.23V in

a SOT-23 package.

TS5204 series

3-4

2004/09 rev. A

SOT-89 Mechanical Drawing

SOT-89 DIMENSION

MILLIMETERS

INCHES

MIN

DIM

MIN

4.40

1.50

2.30

0.40

1.50

3.00

0.89

4.05

1.4

MAX

4.60

1.7

MAX

0.181

0.070

0.102

0.020

0.059

0.118

0.047

0.167

0.068

0.017

0.173

0.059

0.090

0.016

0.059

0.118

0.035

0.159

0.055

0.014

2.60

0.52

1.50

3.00

1.20

4.25

1.6

0.35

0.44

SOT-23 Mechanical Drawing

SOT-23 DIMENSION

MILLIMETERS

INCHES

DIM

MIN

2.88

0.39

1.78

0.51

1.59

1.04

0.07

MAX

2.91

0.42

2.03

0.61

1.66

1.08

0.09

MIN

MAX

0.115

0.017

0.080

0.024

0.065

0.043

0.004

0.113

0.015

0.070

0.020

0.063

0.041

0.003

TS5204 series

4-4

2004/09 rev. A

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