TS5201CSRF [TSC]

200mA Low Noise LDO Voltage Regulator with Enable; 路200mA的低噪音LDO稳压器具有使能


型号：	TS5201CSRF
厂家：	TAIWAN SEMICONDUCTOR COMPANY, LTD
描述：	200mA Low Noise LDO Voltage Regulator with Enable 路200mA的低噪音LDO稳压器具有使能稳压器
文件：	总7页 (文件大小：333K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TS5201

200mA Low Noise LDO

Voltage Regulator with Enable

SOP-8

Pin Definition:

1. Output

8. Input

7. N/C

2. ADJ / N/C

3. Ground

4. N/C

6. N/C

5. Enable

General Description

TS5201 is an efficient linear voltage regulator with ultra low noise output, very low dropout voltage (typically 17mV at

light loads and 165mV at 200mA), and very low power consumption (600uA at 100mA), providing high output current

even when the application requires very low dropout voltage. The Chip Enable (EN) includes a CMOS or TTL

compatible input allows the output to be turned off to prolong battery life. When shutdown, power consumption drops

nearly to zero. TS5201 is included a precision voltage reference, error correction circuit, a current limited output

driver, over temperature shutdown, revered battery protection and a reference bypass pin to improve its already

excellent low-noise performance.

Features

Typical Application Circuit

●

Ultra Low Noise Output

V_OUT

V_IN

Output Current up to 200mA

Low Dropout Voltage

C_OUT

2.2uF

Low Power Consumption

“Zero” Off-mode Current

Logic Controlled Electronic Enable

Internal Current Limit

off

Thermal Shutdown Protection

Adjustable Version: V_OUT= 1.24 (R1+R2)/R2

(Adjustable output range up to 8V)

Application

EN (pin3) may be connected directly to V_IN(pin 1)

Low noise operation: C_BYP=470pF, C_OUT>2.2uF

Basic operation: C_BYP=not used, C_OUT>2uF

●

Cellular Telephones

Palmtops, Notebook Computers

Battery Powered Equipment

Ordering Information

Consumer and Personal Electronics

SMPS Post Regulator and DC to DC Modules

High-efficiency Linear Power Supplies

Portable Application

Part No.

Package

Packing

TS5201CS RF

SOP-8

2.5Kpcs / 13” Reel

Absolute Maximum Rating (Note 1)

Parameter

Symbol

V_IN

Value

Unit

Input Supply Voltage

-20~ +20

Enable Input Voltage

V_CE

Power Dissipation (Note 2)

Thermal Resistance

P_D

Internal limited

220

Ө_JA

^oC/W

^oC

Operating Junction Temperature Range

Storage Temperature Range

Lead Soldering Temperature (260^oC)

T_J

0 ~ +125

-65 ~ +150

T_STG

1/7

Version: B07

TS5201

200mA Low Noise LDO

Voltage Regulator with Enable

Recommend Operating Rating (Note 3)

Input Supply Voltage

V_IN

+2.5 ~ +16

0 ~ V_IN

Enable Input Voltage

V_CE

Electrical Characteristics V_IN=Vo+1V, Io=100uA, C_OUT=1uF, Vce≥2V, T_J= 25^oC, unless otherwise specified.

Parameter

Conditions

V_IN=Vo + 1V

Min

Typ

V_OUT

Max

1.01|Vo|

Unit

Output Voltage

0.99|Vo|

Output Voltage Temp. Coefficient

Line Regulation

(Note 4)

ppm/ ^oC

%/V

Vo+1V ≤ V_IN≤ 16V

0.1mA ≤ Io ≤ 200mA

Io=100uA

0.005

0.02

0.05

0.2

Load Regulation (Note 5)

%/V

Io=50mA

110

140

165

0.01

150

250

275

Dropout Voltage (Note 6)

Quiescent Current

Io=100mA

Io=200mA

V_IN≤0.4V (shutdown)

V_IN≤0.18V (shutdown)

Io=100uA

125

600

1000

1900

500

Io=50mA

Io=100mA

Io=200mA

350

600

1300

300

Ground Pin Current (Note 7)

Vce≥2V

Output Current Limit

V_OUT=0V

Power Supply Rejection Ratio

Thermal Regulation (Note 8)

At f=100Hz, Io=100uA,

0.05

%/W

Io=50mA, C_OUT=2.2uF,

Output Noise

260

470pF from bypass to Ground

Enable function

Enable Input Logic-Low Voltage

Enable Input Logic-High Voltage

Regulation shutdown

Regulation enable

V_IL≤ 0.4V

2.0

0.4

0.01

-1

Enable Input Current

V_IH≥ 2.0V

Block Diagrams

2/7

Version: B07

TS5201

200mA Low Noise LDO

Voltage Regulator with Enable

Electrical Specification (Continue)

Note:

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

2. The maximum allowable power dissipation at any Ta is Pd(max) = [T_J(MAX)- Ta] + Ө_JA. Exceeding the maximum

allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.

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

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

range.

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 200mA (5V version) and 1mA to 120mA (V_OUT<5V version). Changes

in output voltage due to heating effects are covered by the thermal regulation specification.

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.

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.

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 200mA load pulse at V_IN=16V for t=10mS.

Application Information

Enable Input

TS5201 series feature an active-high (>2V) enable (EN) input that allows ON/OFF control of the regulator. Current

drain reduces to “zero” when the device is shutdown, with only micro-amperes of leakage current. The EN is

compatible with CMOS logic interfacing. EN may be directly tied to V_INand pulled up to the maximum supply voltage.

Input Capacitor Requirement

An input capacitor of 0.1uF 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 TS5201 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.

Reference Bypass Capacitor

Bypass is connected to the internal voltage reference. A 470pF capacitor (C_BYPASS) connected from Bypass to

Ground quiets this reference, providing a significant reduction in output noise. C_BYPASSreduces the regulator phase

margin; when using C_BYPASS, output capacitors of 2.2uF or greater are generally required to maintain stability.

The star up speed of the TS5201 is inversely proportional to the size of the reference bypass capacitor. Applications

requiring a slow ramp up of output voltage should consider larger values of C_BYPASS. Likewise, if rapid turn on is

necessary, consider omitting C_BYPASS. If output noise is not a major concern, omitted C_BYPASSand leave Bypass open.

3/7

Version: B07

TS5201

200mA Low Noise LDO

Voltage Regulator with Enable

Application Information (Continue)

No Load Stability

The TS5201 series will remain stable and in regulation with no load, unlike many other voltage regulators. This is

especially important in CMOS RAM keep alive applications.

Adjustable Regulator Design

The adjustable regulator versions can be adjusted to a specific output voltage by using two external resistors to

programming the output voltage anywhere between 1.25 and the 8V maximum operating rating of the family.

Two resistors are used. Resistors can be quite large up to 470kΩ, because of the very high input impedance and low

bias current of the sense comparator, the resistor values are calculated by:

A capacitor from Adjust to Ground provides greatly improved noise performance.

V_OUT

V_IN

C_OUT

2.2uF

off

Adjustable Version: V_OUT= 1.24 (R1+R2)/R2

(Adjustable output range up to 8V)

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.

Thermal Characteristics

TS5201 series is designed to provide 200mA (5V version) 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:

P_D(MAX)= [ T_J(MAX)– T_A] /Θ_JA

T_J(MAX)is the maximum junction temperature of the die(125ºC), 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:

P_D= (V_IN– V_OUT) * I_OUT+ V_IN* I_GND

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 TS5201CS at room

temperature with a minimum footprint layout, the maximum input voltage for a set output current can be determined

as follows:

P_D(MAX)= (125^oC – 25^oC) / 220^oC/W

P_D(MAX)= 455mW

4/7

Version: B07

TS5201

200mA Low Noise LDO

Voltage Regulator with Enable

Application Information (Continue)

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 120mA, the

maximum input voltage can be determined. From the electrical characteristics table, the maximum ground current for

120mA output current is 2.5mA.

445mW = (V_IN– 3.3V ) * 200mA + V_IN* 2.5mA

445mW = V_IN* 200mA – 3.3 * 200mA + V_IN* 2.5mA

445mW = V_IN* 200mA – 495mW + V_IN* 2.5mA

950mW = V_IN* 152.5mA

V_IN(max) = 6.23V

Therefore, a 3.3V application at 200mA of output current can accept a maximum input voltage of 6.23V in a SOP-8

package.

Noise Reduction Capacitors

On adjustable devices, a capacitor from ADJ to GND will decrease high frequency noise on the output. See following

figure:

Minimum Load

The TS5201 will remain stable and in regulation with no load unlike many other voltage regulators. This is especially

important in CMOS RAM keep-alive applications.

5/7

Version: B07

TS5201

200mA Low Noise LDO

Voltage Regulator with Enable

SOP-8 Mechanical Drawing

SOP-8 DIMENSION

MILLIMETERS

INCHES

MIN

DIM

MIN

4.80

3.80

1.35

0.35

0.40

MAX

5.00

4.00

1.75

0.49

1.25

MAX.

0.196

0.157

0.068

0.019

0.049

0.189

0.150

0.054

0.014

0.016

1.27BSC

0.05BSC

0.10

0º

0.25

7º

0.004

0º

0.009

7º

5.80

0.25

6.20

0.50

0.229

0.010

0.244

0.019

Marking Diagram

= Year Code

= Month Code

(A=Jan, B=Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep,

J=Oct, K=Nov, L=Dec)

= Lot Code

6/7

Version: B07

TS5201

200mA Low Noise LDO

Voltage Regulator with Enable

Notice

Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf,

assumes no responsibility or liability for any errors or inaccuracies.

Information contained herein is intended to provide a product description only. No license, express or implied, to any

intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of sale for

such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale

and/or use of TSC products including liability or warranties relating to fitness for a particular purpose, merchantability,

or infringement of any patent, copyright, or other intellectual property right.

The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers

using or selling these products for use in such applications do so at their own risk and agree to fully indemnify TSC for

any damages resulting from such improper use or sale.

7/7

Version: B07

TS5201CSRF [TSC]

相关型号：

TS5201_07

TS5201_08

TS5201_1

TS5204

TS5204CQ33

TS5204CQ33RF

TS5204CQ50

TS5204CQ50RF

TS5204CQRF

TS5204CX

TS5204CX1.8

TS5204CX18