ST715PU25R [STMICROELECTRONICS]

High input voltage, 85 mA LDO linear regulator;


型号：	ST715PU25R
厂家：	ST
描述：	High input voltage, 85 mA LDO linear regulator 输出元件调节器
文件：	总24页 (文件大小：604K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

ST715

High input voltage, 85 mA LDO linear regulator

Datasheet

- production data

Applications

•

Mobile phones

Personal digital assistant (PDAs)

Cordless phones and similar battery-powered

systems

SOT23-5L

DFN8 (3x3 mm)

Description

The ST715 is a high voltage, ultra low quiescent

current and low drop linear regulator capable of

providing an output current in excess of 85 mA.

SOT323-5L

The device operates over an input voltage range

from 2.5 V to 24 V, and it is stable with output

ceramic capacitors. Fault condition protection

includes short-circuit current limitation. The ultra

low quiescent current of 3.8 µA at full load makes

it highly suitable for low power applications and

battery-powered systems. The wide input voltage

range makes the ST715 an ideal solution for low

power industrial applications. The ST715 is

available in SOT23-5, SOT323-5L or DFN8 (3x3

mm) 8 leads.

Features

•

2.5 V to 24 V input voltage

Low-dropout voltage (500 mV typ. at 85 mA)

Very low quiescent current (3.8 µA typ. at full

load)

•

85 mA guaranteed output current

Output voltages available on request: from

1.2 V to 5.0 V with 100 mV step and adjustable

•

Compatible with ceramic output capacitors

from 0.47 µF to 10 µF

•

Internal current limit

Packages: SOT23-5L, SOT323-5L and DFN8

(3x3 mm)

•

Temperature range: from -40 °C to 125 °C

Table 1. Device summary

Order codes

Output voltage

SOT23-5L

Marking

SOT323-5L

Marking

DFN8 (3x3 mm)

Marking

ST715MR

ST715M25R

ST715M33R

71AD

7125

7133

ST715CR

7AD

ST715PUR

ST715PU25R

ST715PU33R

715AD

71525

71533

ADJ

2.5 V

3.3 V

5.0 V

ST715C33R

ST715C50R

733

750

October 2020

DocID14414 Rev 15

1/24

This is information on a product in full production.

www.st.com

Contents

ST715

Contents

Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Output voltage selection for adjustable version . . . . . . . . . . . . . . . . . . 8

5.1

5.2

External capacitor requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Power dissipation and junction temperature . . . . . . . . . . . . . . . . . . . . . . . 8

Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

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ST715

Diagram

Figure 1. Block diagram (fixed version)

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Figure 2. Block diagram (adjustable version)

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Pin configuration

ST715

Pin configuration

Figure 3. Pin connection (top view)

SOT23-5L/SOT323-5L

DFN8 (3x3)

Table 2. Pin description (DFN8 3x3 mm)

Pin for

adjustable

Symbol

Pin for fixed

Name and function

Input voltage

2, 3, 5, 6, 7

2, 3, 6, 7

Not internally connected

Common ground

GND

Feedback pin

OUT

Output voltage

Exp pad

Leave floating or connect to GND

Table 3. Pin description (SOT23-5L/SOT323-5L)

Pin for

adjustable

Symbol

Pin for fixed

Name and function

1, 3

Input voltage

Not internally connected

Common ground

Feedback pin

GND

OUT

Output voltage

4/24

DocID14414 Rev 15

ST715

Maximum ratings

Table 4. Absolute maximum ratings

Parameter

Symbol

Value

Unit

V_IN

V_OUT

DC input voltage

DC output voltage

Feedback pin

From -0.3 to 26

From -0.3 to V_IN+0.3

According to package

power dissipation

I_OUT

Continuous output current

Maximum power dissipation, DFN package

(1)

P_D

Maximum power dissipation, SOT23-5L and

SOT323-5L packages

0.45

T_STG

T_OP

Storage temperature range

-65 to 150

-40 to 125

°C

Operating junction temperature range

P is based on an operating temperature of 25 °C or less. It must be derated according to the operating temperature.

Note:

Absolute maximum ratings are those values beyond which damage to the device may occur.

Functional operation under these conditions is not implied.

Table 5. Thermal data

Symbol

R_thJA

Parameter

SOT23-5L

SOT323-5L

DFN8

Unit

Thermal resistance junction-ambient

195

245

°C/W

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5/24

Electrical characteristics

ST715

Electrical characteristics

T_J= 25 °C, V_IN= V_OUT(NOM)+ 1 V, C_IN= 0.1 µF, C_OUT= 1 µF, I_OUT= 1 mA, unless otherwise

specified.⁽¹⁾

Table 6. Electrical characteristics - adjustable version

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

V_IN

Operating input voltage I_OUT= 85 mA

2.5

I_OUT

Output current

V_FBaccuracy⁽¹⁾

V_IN= 2.5 to 6 V, T_J= -40 °C to 125 °C

V_IN= V_OUT+ 1 to 24 V,

I_OUT= 1 mA to 30 mA,

T_J= 0 °C to 85 °C

1.195

1.152

1.245

V_FB

_IN= V_OUT+ 1 to 24 V,

I_OUT= 1 mA to 85 mA,

T_J= -40 °C to 125 °C

1.248

0.004

_IN= V_OUT+1 to 24 V, I_OUT= 1 mA,

T_J= -40 °C to 125 °C

_OUT= 1 mA to 85 mA,

∆V_OUTLine regulation

∆V_OUTLoad regulation

0.001

0.002

%/V

0.004 %/mA

T_J= -40 °C to 125 °C

200 Hz to 100 kHz, I_OUT= 50 mA,

e_N

Output noise voltage ⁽²⁾

µV_RMS

C_OUT= 10 µF, T_J= -40 °C to 125 °C,

V_OUT= 1.2 V

V_IN= V_OUTNOM+1 V+/-

V_RIPPLE,V_RIPPLE= 0.2 V,

I_OUT= 1 mA, C_OUT= 10 µF

f = 1 kHz

SVR

Supply voltage rejection

Quiescent current

T_J= -40 °C to 125 °C

f = 100 kHz

I_OUT= 0 mA to 85 mA,

T_J= -40 °C to 125 °C

5.5

6.5

I_Q

µA

_OUT= 0 mA to 85 mA, V_IN= 24 V

T_J= -40 °C to 125 °C

V_OUT= 0, T_J= -40 °C to 125 °C

V_IN= 3.8 V

I_SC

Short-circuit current

Turn-on time ⁽³⁾

120

V_IN= 4.2 V, C_OUT= 10 µF, I_OUT= 60 mA,

T_J= -40 °C to 125 °C

T_ON

0.7

µF

C_OUTOutput capacitor

Capacitance f = 100 kHz

0.47

1. For V

< 2 V, V = 2.5 V.

OUT(NOM)

2. Guaranteed by design.

3. Turn-on time is time measured between the input just exceeding 90% of its final value and the output voltage just reaching

95% of its nominal value.

6/24

DocID14414 Rev 15

ST715

Electrical characteristics

T_J= 25 °C, V_IN= V_OUT(NOM)+ 1 V, C_IN= 0.1 µF, C_OUT= 1 µF, I_OUT= 1 mA, V_OUT= 3.3 V

unless otherwise specified.⁽¹⁾

Table 7. Electrical characteristics - fixed version

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

V_OUT

+V_DROP

V_IN

Operating input voltage I_OUT= 85 mA, T_J= -40 °C to 125 °C

I_OUT

Output current

V_IN= 4.3 to 24 V, T_J= -40 °C to 125 °C

V_IN= V_OUT+1 to 24 V, I_OUT= 0 to 85 mA,

T_J= -40 °C to 125 °C

V_OUTV_OUTtotal accuracy ⁽¹⁾

-5

V_IN= 4.3 to 24 V, I_OUT= 1 mA,

T_J= -40 °C to 125 °C

∆V_OUTLine regulation

0.001 0.004

%/V

I_OUT=100 µA to 85 mA,

T_J= -40 °C to 125 °C

∆V_OUTLoad regulation

0.002 0.003 %/mA

V_DROPDropout voltage⁽²⁾

I_OUT= 85 mA, T_J= -40 °C to 125 °C

200 Hz to 100 kHz, I_OUT= 50 mA,

500

1000

e_N

Output noise voltage⁽³⁾

210 µV_RMS

C_OUT= 10 µF, T_J= -40 °C to 125 °C

V_IN= V_OUTNOM+1 V+/-

V_RIPPLE,V_RIPPLE= 0.2 V,

I_OUT= 1 mA, C_OUT= 10 µF

f = 1 kHz

SVR Supply voltage rejection

T_J= -40 °C to 125 °C

f = 100 kHz

3.75

4.15

5.5

µA

6.5

_OUT=0 mA to 85 mA,

I_Q

Quiescent current

T_J= -40 °C to 125 °C

V_IN=24 V

I_SC

Short-circuit current

Turn-on time ⁽⁴⁾

V_OUT= 0, T_J=-40 °C to 125 °C V_IN= 3.8 V

120

µF

V_IN= 4.2 V, C_OUT= 10 µF, I_OUT= 60 mA,

T_J= -40 °C to 125 °C

T_ON

0.7

C_OUTOutput capacitor

Capacitance f = 100 kHz

0.47

1. For V

< 2 V, V = 2.5 V.

OUT(NOM)

2. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value. This

specification does not apply to output voltages below 2 V.

3. Guaranteed by design.

4. Turn-on time is time measured between the input just exceeding 90% of its final value and the output voltage just reaching

95% of its nominal value.

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Output voltage selection for adjustable version

ST715

Output voltage selection for adjustable version

The ST715 features an adjustable output voltage due to two external resistors connected as

a voltage divider to the FB pin as shown in Figure 4. The output voltage is set by the

following equation:

Equation 1

V_OUT= V_FB(1 + R₁/R₂)

where typically V_FB= 1.2 V. Choose R₂≥ 5 kΩ to optimize the quiescent current, accuracy,

and high-frequency power supply rejection. The resistor selection is given by the following

equation:

Equation 2

R₁= R₂x (V_OUT/V_FB- 1)

5.1

External capacitor requirements

A 0.1 µF or a larger input bypass capacitor, connected between IN and GND and located

close to the device, is recommended. In this manner, the transient response and noise

rejection of the power supply, as a whole, improve. A higher value of the input capacitor may

be necessary if large, fast-rise-time load transients are present in the application and if the

device is several inches far from the power source.

The ST715 requires an output capacitor connected between OUT and GND to stabilize the

internal control loop. Any capacitor, (including ceramic and tantalum) with a value higher

than 0.47 µF, stabilizes this loop.

5.2

Power dissipation and junction temperature

For a reliable operation, junction temperature should not exceed 125 °C. This limits the

power dissipation the regulator can handle in any application. To guarantee that the junction

temperature is within acceptable limits, calculate the maximum allowable dissipation,

P_D(max), and the dissipation, P_D, which must be less than or equal to P_D(max)

The maximum power dissipation limit is given by the following equation:

Equation 3

P_D(max)= (T_JMAX- T_A) / R_thJA

where:

T_JMAXis the maximum allowable junction temperature

R_thJAis the thermal resistance junction-to-ambient for the package

T_Ais the ambient temperature

The regulator dissipation is calculated by the following equation:

8/24

DocID14414 Rev 15

ST715

Output voltage selection for adjustable version

Equation 4

P_D= (V_IN- V_OUT) x I_OUT

Power dissipation coming from quiescent current is negligible.

The ST715 features the internal current limit. During normal operation, it limits the output

current to approximately 350 mA. When the current limit engages, the output voltage scales

back linearly until the overcurrent condition ends. Do not exceed the power dissipation

ratings of the package.

DocID14414 Rev 15

9/24

Typical application

ST715

Typical application

Figure 4. Application circuit for fixed version

Figure 5. Application circuit for adjustable version

10/24

DocID14414 Rev 15

ST715

Typical performance characteristics

Figure 6. Output voltage vs. temperature

Figure 7. Output voltage vs. input voltage

3.5

3.45

3.4

3.5

I_OUT=1mA

I_OUT=85mA

2.5

3.35

3.3

1.5

3.25

3.2

0.5

V_IN=V_OUT(NOM)+1V

3.15

-50

100

150

Temp [°C]

V_IN[V]

Figure 8. Dropout voltage vs. output current

Figure 9. C_OUTstability region

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frequency

Output noise voltage vs. frequency

700

600

500

400

300

200

100

I_OUT=1mA, V_RIPPLE=0.2V_PP, V_OUT=1.2V

I_OUT=50mA, V_IN=2.5V, V_OUT=1.2V

1000

10000

100000

100

1000

10000

Freq [Hz]

100000

Freq [Hz]

DocID14414 Rev 15

11/24

Typical performance characteristics

ST715

Figure 11. Quiescent current vs. input voltage

Figure 12. Load transient

V_IN=V_INH, I_OUT=1mA, V_OUT=3.3V

V_IN[V]

t =t =5µS

=1µF, V =V =24V I

=from 1mA to 85mA

OUT

Figure 13. Line transient

Figure 14. Enable transient

=1µF; V =V =from 4.3 to 22V; I

=1mA; t =t =5µs

= C

=1µF, V =V =0 to 4.3V, I

=1mA

OUT

12/24

DocID14414 Rev 15

ST715

Package mechanical data

In order to meet environmental requirements, ST offers these devices in different grades of

ECOPACK packages, depending on their level of environmental compliance. ECOPACK

specifications, grade definitions and product status are available at: www.st.com.

ECOPACK is an ST trademark.

Figure 15. SOT23-5L drawing

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DocID14414 Rev 15

13/24

Package mechanical data

ST715

Table 8. SOT23-5L mechanical data

Dim.

Min.

Typ.

Max.

0.90

1.45

0.15

1.30

0.50

0.20

0.90

0.30

2.09

2.95

1.60

0.95

2.80

0.30

0.60

Figure 16. SOT23-5L recommended footprint (dimensions in mm)

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14/24

DocID14414 Rev 15

ST715

Package mechanical data

Figure 17. SOT323-5L drawing

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DocID14414 Rev 15

15/24

Package mechanical data

ST715

Table 9. SOT323-5L mechanical data

Dim.

Min.

Typ.

Max.

0.80

1.10

0.10

0.80

0.15

0.10

1.80

1.15

0.90

0.30

0.22

2.20

2.40

1.35

2.10

1.25

0.65

1.30

0.36

0.26

0.46

0°

8°

16/24

DocID14414 Rev 15

ST715

Package mechanical data

Figure 18. DFN8 (3x3 mm) drawing

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DocID14414 Rev 15

17/24

Package mechanical data

ST715

Table 10. DFN8 (3x3 mm) mechanical data

Dim.

Min.

Typ.

Max.

0.80

0.90

0.02

0.20

0.30

1.00

0.05

0.25

2.85

0.35

3.15

1.603

2.85

1.753

1.853

3.15

1.345

1.495

0.65

0.40

1.595

0.30

0.50

18/24

DocID14414 Rev 15

ST715

Package mechanical data

Figure 19. DFN8 (3x3 mm) recommended footprint

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DocID14414 Rev 15

19/24

Packaging mechanical data

ST715

Packaging mechanical data

Figure 20. Tape and reel SOT23-5L drawing

20/24

DocID14414 Rev 15

ST715

Packaging mechanical data

Table 11. SOT23-5L tape and reel mechanical data

Dim.

Min.

Typ.

Max.

180

12.8

20.2

13.0

13.2

14.4

3.33

3.27

1.47

4.1

3.13

3.07

1.27

3.9

3.23

3.17

1.37

4.0

3.9

4.0

4.1

Table 12. SOT323-xL tape and reel mechanical data

Dim.

Min.

Typ.

Max.

175

12.8

20.2

59.5

180

185

13.2

60.5

14.4

2.25

3.17

1.2

3.9

4.0

4.1

4.2

4.0

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Packaging mechanical data

ST715

Table 13. DFN8 (3x3 mm) tape and reel mechanical data

Dim.

Min.

Typ.

Max.

180

12.8

20.2

13.2

14.4

3.3

1.1

22/24

DocID14414 Rev 15

ST715

Revision history

Table 14. Document revision history

Changes

Date

Revision

08-Feb-2008

19-Feb-2008

22-Sep-2008

26-Nov-2008

24-Mar-2010

20-May-2010

Initial release.

Modified: Features on page 1

Modified: DFN8 (3x3 mm) mechanical data 10 on page 23

Modified: Section 5 on page 8

Modified: Table 4 on page 5

Modified: I_Qmax values Table 6 on page 6 and Table 7 on page 7

Modified: Table 2 and Table 4 on page 4

Part numbers ST715xx, ST715xx25, ST715xx33 changed to ST715.

Added package DFN8 (3 x 3 mm).

Updated the title, the features and the description in cover page.

Updated Section 1: Diagram, Section 2: Pin configuration, Section 3: Maximum

ratings, Section 4: Electrical characteristics and Section 8: Package

28-Jan-2014

mechanical data

Added Section 9: Packaging mechanical data

Minor text changes.

Updated Section 8: Package mechanical data

21-May-2014

26-Sep-2014

15-Oct-2014

Minor text changes.

Updated Table 2: Pin description (DFN8 3x3 mm) and Table 3: Pin description

(SOT23-5L/SOT323-5L)

Updated Figure 9: COUT stability region

Minor text changes.

Updated Table 6 on page 6 and Table 7 on page 7

Minor text changes.

08-Jan-2018

06-Jul-2018

06-Apr-2020

12-Oct-2020

Updated Table 6: Electrical characteristics - adjustable version.

Added new order code ST715C50R on Table 1: Device summary.

Updated Table 2: Pin description (DFN8 3x3 mm).

Added new order code ST715CR in Table 1 on the cover page.

DocID14414 Rev 15

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ST715

IMPORTANT NOTICE – PLEASE READ CAREFULLY

STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and

improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on

ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order

acknowledgement.

Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or

the design of Purchasers’ products.

No license, express or implied, to any intellectual property right is granted by ST herein.

Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.

ST and the ST logo are trademarks of ST. For additional information about ST trademarks, please refer to www.st.com/trademarks. All other

product or service names are the property of their respective owners.

Information in this document supersedes and replaces information previously supplied in any prior versions of this document.

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DocID14414 Rev 15

ST715PU25R [STMICROELECTRONICS]

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