TS39100CW18RP datasheet, PDF - EEWORLD Datasheet

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TS39100CW18RP: Description1A Ultra Low Dropout Voltage Regulator; CategoryPower/power management The power supply circuit; File Size129KB，7 Pages; ManufacturerTaiwan Semiconductor; Websitehttp://www.taiwansemi.com/

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TS39100CW18RP Overview

1A Ultra Low Dropout Voltage Regulator

TS39100CW18RP Parametric

Parameter Name	Attribute value
Maker	Taiwan Semiconductor
package instruction	ROHS COMPLIANT, SOT-223, 4 PIN
Reach Compliance Code	unknown
ECCN code	EAR99
Maximum drop-back voltage 1	0.63 V
Maximum input voltage	16 V
Minimum input voltage	2.5 V
JESD-30 code	R-PDSO-G3
length	6.6 mm
Number of functions	1
Number of terminals	3
Working temperatureTJ-Max	125 °C
Working temperature TJ-Min	-40 °C
Maximum output current 1	1 A
Maximum output voltage 1	1.854 V
Minimum output voltage 1	1.746 V
Nominal output voltage 1	1.8 V
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Certification status	Not Qualified
Regulator type	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height	1.8 mm
surface mount	YES
Terminal form	GULL WING
Terminal pitch	2.3 mm
Terminal location	DUAL
width	3.6 mm

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TS39100

1A Ultra Low Dropout Voltage Regulator

SOT-223

TO-252

(DPAK)

Pin Definition:

1. Input

2. Ground (tab)

3. Output

General Description

The TS39100 are 1A ultra low dropout linear voltage regulators that provide low voltage, high current output from

an extremely small package. This regulator offers extremely low dropout (typically 400mV at 1A) and very low

ground current (typically 17mA at 1A).

The TS39100 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.

Features

●

Dropout voltage typically 0.4V @Io=1A

Output Current up to 1A

Low Ground Current

Extremely Fast Transient Response

Reversed Leakage & Reverse Battery Protection

Current Limit & Thermal Shutdown Protection

Ordering Information

Part No.

Package

Packing

TS39100CWxx RP

SOT-223 2.5Kpcs / 13” Reel

TS39100CWxx RPG

SOT-223 2.5Kpcs / 13” Reel

TS39100CPxx RO

TO-252

2.5Kpcs / 13” Reel

TS39100CPxx ROG

TO-252

2.5Kpcs / 13” Reel

Note: Where

denotes voltage option, available are

18=1.8V, 25=2.5V, 33=3.3V, 50=5.0V

“G” denote for Halogen Free

Application

ULDO Linear Regulator for PC add-in Cards

PowerPC Power Supplies

Battery Powered Equipment

Consumer and Personal Electronics

High Efficiency Linear Power Supplies

SMPS Post Regulator and DC to DC Modules

High-efficiency Post Regulator for Switching

Supply

●

Portable Application

●

Low-Voltage microcontrollers and Digital Logic

●

Typical Application Circuit

Absolute Maximum Rating

(Note 1)

Parameter

Supply Voltage

Operation Input Voltage

Power Dissipation (Note 4)

Operating Junction Temperature Range

Storage Temperature Range

Lead Soldering Temperature (260 C)

ESD

Symbol

(operate)

STG

Value

-20V ~ +20

+2.25 ~ +16

Internally Limited

-40 ~ +125

-65 ~ +150

(Note 3)

Units

1/7

Version: C11

TS39100

1A Ultra Low Dropout Voltage Regulator

Functional Diagram

Application Information

The TS39100 are high performance with low dropout voltage regulator suitable for moderate to high current and

voltage regulator application. Its 630mV 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 V

saturation voltage.

The TS39100 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.

Output Capacitor Requirement

The TS39100 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. TS39100

output capacitor selection is dependent upon the ESR of the output capacitor to maintain stability. When the output

capacitor is 10uF or greater, the output capacitor should have an ESR less than 2Ω. This will improve transient

response as well as promote stability. Ultra low ESR capacitors (<100mΩ), such as ceramic chip capacitors, may

promote instability. These very low ESR levels may cause an oscillation and/or under damped transient response.

A low ESR solid tantalum capacitor works extremely well and provides good transient response and stability over

temperature aluminum electrolytes can also be used, as long as the ESR of the capacitor is <2Ω. The value of the

output capacitor can be increased without limit. Higher capacitance values help to improve transient response and

ripple rejection and reduce output noise.

Input Capacitor Requirement

An input capacitor of 1uF or greater is recommended when the device is more than 4” away from the bulk AC

supply capacitance or when the supply is a battery. Small, surface mount, ceramic chip capacitors can be used for

bypassing. Larger values will help to improve ripple rejection by bypassing the input to the regulator, further

improving the integrity of the output voltage.

Minimum Load Current

The TS39100 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 is necessary for proper regulation.

3/7

Version: C11

TS39100

1A Ultra Low Dropout Voltage Regulator

Application Information (Continue)

Transient Response and 3.3V to 2.5V or 2.5V to 1.8V Conversion

TS39100 has excellent transient response to variations in input voltage and load current. The device have been

designed to respond quickly to load current variations and input voltage variations. Large output capacitors are not

required to obtain this performance. A standard 10uF output capacitor, preferably tantalum, is all that is required.

Larger values help to improve performance even further. By virtue of its low dropout voltage, this device does not

saturate into dropout as readily as similar NPN base designs. When converting from 3.3V to 2.5V or 2.5V to 1.8V,

the NPN based regulators are already operating in dropout, with typical dropout requirements of 1.2V or greater,.

To convert down to 2.5V or 1.8V without operating in dropout, NPN based regulators require an input voltage of

3.7V at the very least. The TS39100 will provide excellent performance with an input as low as 3.0V or 2.5V

respectively. This gives the PNP based regulators a distinct advantage over older, NPN based linear regulators.

Copper area lay out information

Determine the power dissipation requirements for the design along with the maximum ambient temperature at

which the device will be operated. Refer to power dissipation with copper area curve, which shows safe operating

curves for three different ambient temperatures with 25 C, 50 C, 85 C. From these curves, the minimum amount of

copper can be determined by knowing the maximum power dissipation required.

= (V

- V

OUT

) * I

OUT

+ V

* I

GND

If we used a 5.0V output device and a 6V input at an output current of 350mA, then the power dissipation is as

follows:

= (6.0V- 5.0V) * 350mA + 5V * 4mA

= 350mW + 20mW

= 370mW

If the maximum ambient temperature is 85 C and the power dissipation is as above 375mW, the curve is shows

that the required area of copper is 80mm .

4/7

Version: C11

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