STP1117SXX [SECOS]

1.0A Low Dropout Positive Adjustable or Fixed-Mode Regulator;


型号：	STP1117SXX
厂家：	SECOS HALBLEITERTECHNOLOGIE GMBH
描述：	1.0A Low Dropout Positive Adjustable or Fixed-Mode Regulator
文件：	总6页 (文件大小：449K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

STP1117Sxx Series

1.0A Low Dropout Positive

Adjustable or Fixed-Mode Regulator

Elektronische Bauelemente

RoHS Compliant Product

A suffix of “-C” specifies halogen free

DESCRIPTION

SOT-223

The STP1117Sxx series of positive adjustable and

fixed regulators are designed to provide 1A with high

efficiency. All internal circuitry is designed to operate

down to 1.4V input to output differential.

On-chip trimming adjusts the reference voltage to

1%. Current limit the typical value of 1.5A allows to

minimizing the stress on both the regulator and the

power source circuitry under overload conditions.

Top View

C B

FEATURES

ꢀ

Adjustable or Fixed Output 1.2V,1.8V,2.5V,3.3V

Output Current of 1A

Low Dropout, 1.2 V typ. at 1A Output Current

0.04% Line Regulation

0.2 % Load Regulation

100% Thermal Limit Burn-In

Fast Transient Response

Millimeter

Min.

REF.

Min.

Max.

6.70

7.30

3.80

1.90

4.75

0.85

Max.

0.18

5.90

6.70

3.30

1.40

4.45

0.60

2.00 REF.

0.20

1.10 REF.

2.30 REF.

2.80 3.20

0.40

APPLICATIONS

ꢀ

High Efficiency Linear Regulators

Post Regulators for Switching Supplies

Adjustable Power Supply

Vin

ADJ (Gnd) Vout

MARKING

Part Number

Marking

1117SA

xx:Vout

25: 2.5V

33: 3.3V

A: ADJ

12: 1.2V

18: 1.8V

STP1117SA

STP1117S12

STP1117S18

STP1117S25

STP1117S33

1117S12

1117S18

1117S25

1117S33

The last letter(s) of Part No.

denote the Output Voltage

PACKAGE INFORMATION

Package

MPQ

Leader Size

SOT-223

13 inch

TYPICAL APPLICATION CIRCUIT

http://www.SeCoSGmbH.com/

Any changes of specification will not be informed individually.

27-Jun-2017 Rev. B

Page 1 of 6

STP1117Sxx Series

1.0A Low Dropout Positive

Adjustable or Fixed-Mode Regulator

Elektronische Bauelemente

ABOSLUTE MAXIMUM RATINGS

Parameter

Symbol

V_I

Value

Unit

Input Voltage

Minimum ESD Rating (HBM)

Lead Temperature (Soldering, 10sec.)

Thermal Resistance Ambient Ambient

Operating Junction Temperature Range

V_ESD

T_L

°C

300

R_θJC

T_J

°C/W

°C

-40~+125

-65~+150

Storage Temperature Range

Note:

T_stg

°C

Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and

operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

FUNCTIONAL BLOCK DIAGRAM

http://www.SeCoSGmbH.com/

Any changes of specification will not be informed individually.

27-Jun-2017 Rev. B

Page 2 of 6

STP1117Sxx Series

1.0A Low Dropout Positive

Adjustable or Fixed-Mode Regulator

Elektronische Bauelemente

ELECTRICAL CHARACTERISTICS(I_LOAD=0mA, T_J=25°C unless otherwise specified )

Parameter

Symbol

Device

Min.

Typ.

Max Unit

Test conditions

Operating Voltage ⁴

V_IN

I_LOAD=10mA, V_IN=5V

1.232 1.250 1.268

Reference Voltage ¹

Output Voltage ¹

V_IROC

Adj

I_LOAD=10mA to1A,

1.5V ≤ V_IN-V_OUT≤ 10V ⁴

1.225 1.250 1.275

V_IN=V_OUT=1.5V,

Variator from nominal V_OUT

-1.5

-2

1.5

All fixed

version

V_O

1.5V ≤ V_IN-V_OUT≤ 10V,

I_LOAD=0mA to 1A,

Variator from nominal V_OUT

V_OUT=1.2V

All

-3

Output Voltage Accuracy

@Wafer Testing

V_O

V_IN=V_OUT=1.5V, I_LOAD=10mA

-0.6

0.6

LNR

LDR

I_L

All

adj

I_LOAD=10mA, 1.5V ≤ V_IN-V_OUT≤ 10V ⁴

V_IN=V_OUT=1.5V, I_LOAD=10mA to1A ⁴

V_IN=5V, V_ADJ=0V ⁴

Line Regulation

0.04

0.2

0.238

0.25

Load Regulation ¹

Minimum Load Current

All fixed

version

V_IN=V_OUT=1.5V, I_LOAD=10mA to1A ⁴

Ground Pin Current

I_LOAD=10mA, 1.5V ≤ V_IN-V_OUT≤ 10V ⁴

V_IN-V_OUT=1.5V ⁴

Adj

All

Adjust Pin Current

Current Limit

1.5

Ripple Rejection ²

Dropout Voltage ^1.3

V_D

V_IN-V_OUT=2.5V, I_LOAD=1A

I_LOAD=1A ⁴

1.2

1.4

V_IN-V_OUT=1.5V, I_LOAD=10mA ⁴

Temperature Coefficient

Notes:

0.015 %/°C

1. Low duty pulse testing with Kelvin connections required.

2. 120Hz input ripple (C_ADJfor ADJ = 25µF).

3. △V_OUT, △V_REF=1%

4. The specifications which apply over the full temperature range: −40°C ≤ TJ ≤ 125°C.

http://www.SeCoSGmbH.com/

Any changes of specification will not be informed individually.

27-Jun-2017 Rev. B

Page 3 of 6

STP1117Sxx Series

1.0A Low Dropout Positive

Adjustable or Fixed-Mode Regulator

Elektronische Bauelemente

TYPICAL CHARACTERISTICS

http://www.SeCoSGmbH.com/

Any changes of specification will not be informed individually.

27-Jun-2017 Rev. B

Page 4 of 6

STP1117Sxx Series

1.0A Low Dropout Positive

Adjustable or Fixed-Mode Regulator

Elektronische Bauelemente

TYPICAL CHARACTERISTICS

http://www.SeCoSGmbH.com/

Any changes of specification will not be informed individually.

27-Jun-2017 Rev. B

Page 5 of 6

STP1117Sxx Series

1.0A Low Dropout Positive

Adjustable or Fixed-Mode Regulator

Elektronische Bauelemente

APPLICATION INFORMATION

Output Voltage

The STP1117S develops a 1.25V reference Voltage

Between the output and the adjust terminal. By placing

A resistor between these two terminals, a constant current

Is cause to flow through R1 and down through R2 to set the

Overall output voltage. Normally, this current is chosen to be

the specified minimum load current of 10mA . For fixed voltage

devices R1 and R2 are included in the device.

Load Regulation

When the adjustable regulator is used, load regulation

will be limited by the resistance of the wire connecting the

regulator to the load. The data sheet specification foe load

regulation is measured at the output pin of the device.

Best load regulation is obtained when the top of the

resistor divider (R1) is tied directly to the output pin of the

device not to the load. For fixed voltage, devices the top

of R1 is internally connected to the output, and the ground

pin can be connected to low side of the load. If R1 is

connected to the load, R_Pis multiplied by the divider ratio,

the effective resistance between the regulator and the load

would be:

R_P× (1 + R2/R1), R_P= Parasitic Line Resistance

Input Capacitor

An input capacitor of 10µF or greater is recommended.

Tantalum or aluminum electrolytic capacitors can be used for

bypassing. Larger Values will improve ripple rejection by

bypassing the input to the regulator.

Output Capacitor

The STP1117S requires an output capacitor to maintain stability and improve transient response. Proper

capacitor selection is important to ensure proper operation. The STP1117S output capacitor selection is dependent

upon the ESR (equivalent series resistance) of the output capacitor to maintain stability. When the output

capacitor is 10µF or greater, the output capacitor should have an ESR less than 1Ω. This will improve transient

response as well as promote stability. A low-ESR solid tantalum capacitor works extremely well and provides

good transient response and stability over temperature.

Aluminum electrolytics can also be used, as long as the ESR of the capacitor is <1Ω. 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.

Ripple Rejection

The curves for Ripple Rejection were generated using an adjustable device with the adjust pin bypassed.

With a 25µF bypassing capacitor, 75dB ripple rejection is obtainable at any output level. The impedance of

the adjust pin capacitor, at the ripple frequency, should be <R1. R1 is normally in the range of 100W to

200W. The size of the required adjust pin capacitor is the function of the input ripple frequency. At 120Hz,

with R1=100Ω,the adjust pin capacitor should be 13µF. For fixed voltage devices and adjustable devices

without an adjust pin capacitor, the output ripple will increase as the ratio of the output voltage to the reference

voltage (V_OUT/V_REF).

http://www.SeCoSGmbH.com/

Any changes of specification will not be informed individually.

27-Jun-2017 Rev. B

Page 6 of 6

STP1117SXX [SECOS]

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