TS39152CZ5 [TSC]

1.5A Ultra Low Dropout Positive Voltage Regulator; 1.5A超低压差正电压稳压器


型号：	TS39152CZ5
厂家：	TAIWAN SEMICONDUCTOR COMPANY, LTD
描述：	1.5A Ultra Low Dropout Positive Voltage Regulator 1.5A超低压差正电压稳压器稳压器
文件：	总7页 (文件大小：148K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TS39151/52

1.5A Ultra Low Dropout Positive Voltage Regulator

Low Dropout Voltage 0.4V (typ.)

Enable Input Control

Adjustable Output

Error Flag Detection

General Description

The TS39151/52 series are 1.5A ultra low dropout linear voltage regulators that provide low voltage, high current output

from an extremely small package. These regulator offers extremely low dropout (typically 400mV at 1.5A) and very low

ground current (typically 12mA at 1.5A).

The TS39151/52 series are fully protected against over current faults, reversed input polarity, reversed lead insertion,

over temperature operation, positive and negative transient voltage spikes, logic level enable control and error flag which

signals whenever the output falls out of regulation.

On the TS39151/52, the enable pin may be tied to Vin if it is not required for enable control. This series are offered in

5-pin TO-220, TO-263 package.

Features

Ordering Information

ꢀ

Dropout voltage typically 0.4V @Io=1.5A

Part No.

Operating Temp.

Package

Output current up to 1.5A

(Junction)

Low ground current

TS39151CZ5xx

TS39151CM5xx

TS39152CZ5

TO-220-5L

TO-263-5L

TO-220-5L

TO-263-5L

Output voltage trimmed before assembly

Extremely fast transient response

Reversed leakage protection

Reverse battery protection

-40 ~ +125 ^oC

TS39152CM5

Note: Where xx denotes voltage option, available are

Error flag signals output out of regulation

Internal current limit

5.0V, 3.3V, 2.5V and 1.8V.

Thermal shutdown protection

Applications

ꢀ

Battery power equipment

ꢀ

High efficiency linear power supplies

High efficiency post regulator for switching supply

Low-voltage microcontrollers and digital logic

SMPS post regulator

LDO linear regulator for PC add-in cards

PowerPC^TMpower supplies

ꢀ

Multimedia and PC processor supplies

ꢀ

Absolute Maximum Rating (Note 1)

Supply Voltage

Vin

Ven

T_STG

-20V ~ +20

+20

Enable Voltage

Storage Temperature Range

Lead Soldering Temperature (260 ^oC)

ESD

-65 ~ +150

^oC

(Note 3)

TS39151/52

1-1

2004/09 rev. A

Operating Rating (Note 2)

Operation Input Voltage

Vin (operate)

+2.25 ~ +16

Operation Enable Voltage

Ven (operate)

Power Dissipation (Note 4)

P_D

T_J

Internally Limited

-40 ~ +125

^oC

Operating Junction Temperature Range

Electrical Characteristics

Vin = Vout + 1V, Venable= 2.4V, Tj = 25 ^oC, unless otherwise specified.

Parameter

Conditions

Min

Typ

Max

Unit

Output Voltage

I_L=10mA

0.990|Vo|

0.980|Vo|

5.0/3.3

2.5/1.8

1.010|Vo|

1.020|Vo|

Output Voltage

10mA ≤ I_L≤ 1.5A,

Vo+1V ≤ Vin ≤ 8V

I_L=10mA, Vo+1V ≤Vin≤ 16V

Vin=Vout+1V,

Line Regulation

Load Regulation

0.05

0.2

0.5

1.0

10mA≤I_L≤1.5A

Output Voltage Temp. Coefficient

Dropout Voltage (Note 5)

100

275

400

100

200

ppm/ ^oC

∆Vout= -1%

I_L=100mA

I_L=750mA

I_L=1.5A

600

Quiescent Current (Note 6)

Vin=Vout+1V I_L=750mA

I_L=1.5A

Current Limited

Vout=0, Vin=Vout+1V

2.0

2.5

Minimum Load Current

Reference (TS39152)

Reference Voltage

0.980|Vo|

1.24

1.020|Vo|

Reference Voltage

(Note 7)

(Note 8)

0.970|Vo|

1.030|Vo|

Adjust Pin Bias Current

Reference Voltage Temp. Coefficient

Adjust Pin Bias Current Temp.

Coefficient

120

ppm/ ^oC

nA/ ^oC

0.1

Flag Output (TS39151)

Output Leakage Current

Output Low Voltage (Note 9)

Upper Threshold Voltage

Lower Threshold Voltage

Hysteresis

V_OH=16V

400

Vin=0.9 * Vout, I_OL=250uA

% of Vout

Enable Input (TS39151 / 2)

Input Logic Voltage

Low (OFF)

High (ON)

Ven=2.25V

Ven=0.8V

2.25

0.8

Enable Pin Input Current

TS39151/52

2-2

2004/09 rev. A

Thermal Performance

Condition

Thermal Resistance

Junction to Case

Package type

TO-220, TO-220-5L

TO-263, TO-263-5L

Typ

2.0

Unit

^oC/W

2.0

Note 1: Absolute Maximum Rating is limits beyond which damage to the device may occur. For guaranteed

specifications and test conditions see the Electrical Characteristics.

Note 2: The device is not guaranteed to operate outside its operating rating.

Note 3: Devices are ESD sensitive. Handling precautions recommended.

Note 4: The maximum allowable power dissipation is a function of the maximum junction temperature, Tj, the junction to

ambient thermal resistance, θja, and the ambient temperature, Ta. Exceeding the maximum allowable power

dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. The effective

value of θja can be reduced by using a heatsink, Pd_(max)= (Tj_(max)– Ta) / Θja.

Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops -1% below its

nominal value measured at 1V differential.

Note 6: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the

ground pin current and output load current, Iin = Ignd + Iout.

Note 7: Vref ≤ Vout ≤ (Vin – 1V), 2.25V ≤ Vin ≤ 16V, 10mA ≤ I_L≤ 1.5A.

Note 8: Output voltage temperature coefficient is ∆Vout (worse cast) / (Tj_(max)- Tj_(min)) where is Tj_(max)+125 ^oC and

Tj_(min)is 0 ^oC.

Note 9: For adjustable device and fiexed device with Vout > 2.25V.

Block Diagram

Flag network is fixed output versions only (TS39151)

** Adjustable output version only (TS39152)

TS39151/52

3-3

2004/09 rev. A

Pin Assignment

Pin No.

Configuration

Description

TS39151

TS39152

Enable (input): TTL/COMS compatible input. Logic high is

enable; logic low or open is shutdown

Enable

Input

Unregulated input: +16V maximum supply

Ground: Ground pin and TAB/heatsink are internally

connected.

Ground

Output

Flag

Regulator output

Error Flag (output): Open-collector output. Active low

indicates an output fault condition.

Adjustment input: Feedback input. Connect to resistive

voltage-divider network.

Adjust

Typical Application Circuit

TS39151

TS39152

TS39151/52

4-4

2004/09 rev. A

Application Information

Thermal Characteristics

The TS39151/52 series are high performance with low

dropout voltage regulator suitable for moderate to high

current and voltage regulator application. Its

400mV(typ) dropout voltage at full load and over

temperature makes it especially valuable in battery

power systems and as high efficiency noise filters in

post regulator applications. Unlike normal NPN

transistor design, where the base to emitter voltage

drop and collector to emitter saturation voltage limit the

minimum dropout voltage, dropout performance of the

PNP output of these devices is limited only by low Vce

saturation voltage.

TS39151/52 series linear regulators are simple to use,

the most complicated design parameters to consider

are thermal characteristics, thermal design requires the

following application specification parameters:

Maximum ambient temperature, Ta

Output current, Iout

Output voltage, Vout

Input voltage, Vin

We calculate the power dissipation of the regulator

from these numbers and the device parameters from

this data sheet. A heatsink may be required depending

on the maximum power dissipation and maximum

ambient temperature of the application. Under all

possible operating conditions, the junction temperature

must be within the range specified under absolute

maximum ratings. To determine if the heatsink is

required, the power dissipated by the regulator, P_D

must be calculated.

The TS39151/52 series is fully protected from damage

due to fault conditions. Linear current limiting is

provided. Output current during overload conditions is

constant. Thermal shutdown the device when the die

temperature exceeds the maximum safe operating

temperature. Transient protection allows device survival

even when the input voltage spikes above and below

nominal. The output structure of these regulators allows

voltages in excess of the desired output voltage to be

applied without reverse current flow.

The below formula shows the voltages and currents for

calculating the P_Din the regulator:

Iin = I_L/ I_G

P_D= (Vin-Vout) * I_L+ (Vin) * I_G

Ex. P_D= (3.3V-2.5V) * 0.5A + 3.3V * 11mA

= 400mW + 36mW

Capacitor Requirement

The TS39151/52 series requires an output capacitor to

maintain stability and improve transient response is

necessary. The value of this capacitor is dependent

upon the output current, lower currents allow smaller

capacitors. TS39151/52 series regulators are stable

with the 10uF minimum capacitor value at full load.

Where the regulator is powered from a source with high

AC impedance, a 0.1uF capacitor connected between

input and ground is recommended. The capacitor

should have good characteristics to above 250KHz. The

capacitance values will be help to improved transient

response, ripple rejection and output noise.

= 436mW

Remark: I_Lis output load current,

I_Gis ground current.

Vin is input voltage

Vout is output voltage

The next parameter which must be calculated is the

maximum allowable temperature rise, T_R(max). this is

calculated by the using to formula:

T_R(max) = T_J(max) – T_A(max)

Where: T_J(max) is the maximum allowable junction

temperature, which is 125 ^oC for commercial

grade parts.

Minimum Load Current

T_A(max)

the

maximum

ambient

temperature which will be encountered in the

application. Using the calculated values for T_R(max)

and P_D, the maximum allowable value for the junction

to ambient thermal resistance, θja, can now be found:

θja = T_R(max) / P_D

The TS39151/52 series is specified between finite

loads. If the output current is too small leakage currents

dominate and the output voltage rises. A 10mA

minimum load current swamps any expected leakage

current across the operating temperature range.

TS39151/52

5-5

2004/09 rev. A

Application Information (continues)

Adjustable Regulator Design

The adjustable regulator versions (TS39152) is allow

to programming the output voltage anywhere between

1.25 and the 16V maximum operating rating of the

family.

Two resistors are used. Resistors can be quite large

up to 1MΩ, because of the very high input impedance

and low bias current of the sense comparator, the

resistor values are calculated by:

R1 = R2 * [(Vout / 1.24) – 1]

Where is Vout the desired output voltage. Above

application circuit shows component definition.

Applications with widely varying load currents may

scale the resistors to draw the minimum load current

required for proper operation.

Error Flag

TS39151 versions feature an Error Flag, which looks

at the output voltage and signals an error condition

when this voltage drops 5% below its expected value.

The error flag is an open-collector output that pulls low

under fault conditions. It may sink 10mA. Low output

voltage signifies a number of possible problems,

including an over-current fault (the device is in current

limit) and low input voltage. The flag output is

inoperative during over temperature shutdown

conditions.

Enable Input

TS39151 and TS39152 versions feature an enable

(EN) input that allows ON/OFF control of the device.

Special design allows “zero” current drain when the

device is disabled–only microamperes of leakage

current flow. The EN input has TTL/CMOS compatible

thresholds for simple interfacing with logic, or may be

directly tied to ≤20V. Enabling the regulator requires

approximately 30uA of current.

TS39151/52

6-6

2004/09 rev. A

TO-220-5L Mechanical Drawing

TO-220 DIMENSION

MILLIMETERS

INCHES

MIN

DIM

MIN

MAX

10.50

4.440

2.940

1.020

1.830

14.13

5.225

1.370

29.44

2.925

0.477

8.800

6.510

15.31

MAX

0.413

0.175

0.116

0.040

0.072

0.556

0.206

0.054

1.159

0.115

0.019

0.346

0.256

0.603

10.00

3.240

2.440

0.260

1.570

13.31

4.475

1.170

27.60

2.175

0.297

8.280

6.010

14.29

0.394

0.128

0.096

0.010

0.062

0.524

0.176

0.046

1.087

0.086

0.012

0.326

0.237

0.563

TO-263-5L Mechanical Drawing

TO-263 DIMENSION

MILLIMETERS

INCHES

DIM

MIN

10.220

14.600

0.750

1.573

4.560

1.240

2.280

0.280

8.240

1.540

MAX

10.260

15.870

0.770

1.827

4.570

1.270

2.790

0.320

8.280

1.800

MIN

MAX

0.404

0.625

0.030

0.072

0.180

0.050

0.110

0.013

0.326

0.071

0.402

0.575

0.030

0.062

0.179

0.049

0.090

0.011

0.324

0.060

TS39151/52

7-7

2004/09 rev. A

TS39152CZ5 [TSC]

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