LD1086DT28 datasheet, PDF - EEWORLD Datasheet

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LD1086DT28: Description3.3 V FIXED POSITIVE LDO REGULATOR, 1.5 V DROPOUT, PSSO3; CategoryPower/power management The power supply circuit; File Size1MB，42 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/

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LD1086DT28 Overview

3.3 V FIXED POSITIVE LDO REGULATOR, 1.5 V DROPOUT, PSSO3

LD1086DT28 Parametric

Parameter Name	Attribute value
Maker	STMicroelectronics
Parts packaging code	TO-252
package instruction	TO-252, SMSIP3H,.38,90TB
Contacts	3
Reach Compliance Code	compli
ECCN code	EAR99
Adjustability	FIXED
Maximum drop-back voltage 1	1.5 V
Nominal dropback voltage 1	1.3 V
Maximum absolute input voltage	30 V
Maximum input voltage	30 V
Minimum input voltage	4.5 V
JESD-30 code	R-PSSO-G2
length	6.5 mm
Maximum grid adjustment rate	0.006%
Maximum load regulation	0.02%
Number of functions	1
Output times	1
Number of terminals	2
Working temperatureTJ-Max	125 °C
Operating temperatureTJ-Mi	-40 °C
Maximum output current 1	1.5 A
Maximum output voltage 1	2.907 V
Minimum output voltage 1	2.793 V
Nominal output voltage 1	2.85 V
Package body material	PLASTIC/EPOXY
encapsulated code	TO-252
Encapsulate equivalent code	SMSIP3H,.38,90TB
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Certification status	Not Qualified
Regulator type	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height	2.63 mm
surface mount	YES
technology	BIPOLAR
Terminal form	GULL WING
Terminal pitch	2.28 mm
Terminal location	SINGLE
Maximum voltage tolerance	2%
width	6.1 mm

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LD1086

1.5 A adjustable and fixed low drop positive voltage regulator

Datasheet

production data

Description

The LD1086 is a low drop voltage regulator

capable of providing up to 1.5 A of output current.

Dropout is guaranteed at a maximum of 1.2 V at

the maximum output current, decreasing at lower

loads. The LD1086 is pin-to-pin compatible with

older 3-terminal adjustable regulators, but has

better performance in terms of drop and output

tolerance. Unlike PNP regulators, where a part of

the output current is wasted as quiescent current,

the LD1086 quiescent current flows into the load,

increasing efficiency. Only a 10 µF (minimum)

capacitor is needed for stability. The device is

available in a TO-220, D²PAK, D²PAK/A, DPAK or

DFN8 (4x4) package. On-chip trimming allows the

regulator to reach a very tight output voltage

tolerance; within ± 1% at 25 °C. The LD1086 is

available as automotive grade for adjustable

output voltages in the TO-220 and DPAK

packages. The PAT, SYL, SBL statistical tests

have been performed, and the devices are

qualified according to the AEC-Q100 specification

for the automotive market in the temperature

range of - 40 °C to 125 °C.

DPAK

TO-220

D²PAK

DFN8 (4x4)

D²PAK/A

Features



Typical dropout: 1.3 V at 1.5 A



Three-terminal adjustable or fixed output

voltage: 1.8 V, 2.5 V, 3.3 V, 5 V, 12 V



Automotive grade (adjustable V

OUT

in TO-220

and DPAK packages only)



Output current guaranteed up to 1.5 A



Output tolerance: ± 1% at 25 °C and ± 2% in full

temperature range



Internal power and thermal limit



Wide operating temperature range - 40 °C to

125 °C



Package available: TO-220, D²PAK, D²PAK/A,

DPAK and DFN8 (4x4)



Pinout compatibility with standard adjustable

voltage regulators

December 2017

This is information on a product in full production.

DocID6739 Rev 36

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www.st.com

LD1086

List of tables

Table 1.

Table 2.

Table 3.

Table 4.

Table 5.

Table 6.

Table 7.

Table 8.

Table 9.

Table 10.

Table 11.

Table 12.

Table 13.

Table 14.

Table 15.

Table 16.

Table 17.

Table 18.

Table 19.

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Electrical characteristics of LD1086#18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Electrical characteristics of LD1086#25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Electrical characteristics of LD1086#33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Electrical characteristics of LD1086#50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Electrical characteristics of LD1086#12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Electrical characteristics of LD1086B# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Electrical characteristics of LD1086# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Electrical characteristics of LD1086DTTRY and LD1086VY (Automotive grade). . . . . . . . 16

TO-220 (STD-ST dual gauge) type A mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

DPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

D²PAK (SMD 2L STD-ST) type A mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

D²PAK (SMD 3L STD-ST) type A mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

DPAK and D²PAK tape and reel mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

DFN8 (4x4) mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

DFN8 (4x4) reel mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

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List of figures

LD1086

List of figures

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Figure 10.

Figure 11.

Figure 12.

Figure 13.

Figure 14.

Figure 15.

Figure 16.

Figure 17.

Figure 18.

Figure 19.

Figure 20.

Figure 21.

Figure 22.

Figure 23.

Figure 24.

Figure 25.

Figure 26.

Figure 27.

Figure 28.

Figure 29.

Figure 30.

Figure 31.

Figure 32.

Figure 33.

Figure 34.

Figure 35.

Figure 36.

Figure 37.

Figure 38.

Figure 39.

Figure 40.

Figure 41.

Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Output voltage vs. temp. (VI = 5 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Output voltage vs. temp. (VI = 15 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Output voltage vs. temperature (VI = 4.25 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Short-circuit current vs. dropout voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Line regulation vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Load regulation vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Dropout voltage vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Dropout voltage vs. output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Adjust pin current vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Adjust pin current vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Adjust pin current vs. output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Quiescent current vs. output current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Quiescent current vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Supply voltage rejection vs. output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Supply voltage rejection vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Minimum load current vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Stability for adjustable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Stability for 2.85 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Stability for 12 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Line transient (VI = 12 to 13 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Line transient (IO = 200 mA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Line transient (CADJ = 1 µF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Load transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Load transient (Trise = Tfall = 10 µs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

TO-220 (STD-ST dual gauge) type A package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

DPAK package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

DPAK recommended footprint (dimension are in mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

D²PAK (SMD 2L STD-ST) type A package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

D²PAK (SMD 3L STD-ST) type A outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

D²PAK (SMD 3L) recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

DPAK and D²PAK tape outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

DPAK and D²PAK reel outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

DFN8 (4x4) package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

DFN8 (4x4) recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

DFN8 (4x4) tape outline (dimension are in mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

DFN8 (4x4) reel outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

4/42

DocID6739 Rev 36

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