L4931CDT120-TR datasheet, PDF - EEWORLD Datasheet

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L4931CDT120-TR: DescriptionLDO Voltage Regulators 12V 0.25A Positive; CategoryPower/power management The power supply circuit; File Size1MB，38 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/; Environmental Compliance

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L4931CDT120-TR Overview

LDO Voltage Regulators 12V 0.25A Positive

L4931CDT120-TR Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	STMicroelectronics
Parts packaging code	TO-252
package instruction	ROHS COMPLIANT, DPAK-3
Contacts	3
Reach Compliance Code	not_compliant
ECCN code	EAR99
Adjustability	FIXED
Maximum drop-back voltage 1	0.8 V
Nominal dropback voltage 1	0.4 V
Maximum absolute input voltage	20 V
Maximum input voltage	20 V
Minimum input voltage	12.9 V
JESD-30 code	R-PSSO-G2
JESD-609 code	e3
length	6.5 mm
Maximum grid adjustment rate	0.024%
Maximum load regulation	0.018%
Humidity sensitivity level	1
Number of functions	1
Output times	1
Number of terminals	2
Working temperatureTJ-Max	125 °C
Working temperature TJ-Min	-40 °C
Maximum output current 1	0.25 A
Maximum output voltage 1	12.48 V
Minimum output voltage 1	11.52 V
Nominal output voltage 1	12 V
Package body material	PLASTIC/EPOXY
encapsulated code	TO-252
Encapsulate equivalent code	SMSIP3H,.38,90TB
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, HEAT SINK/SLUG
method of packing	TAPE AND REEL
Peak Reflow Temperature (Celsius)	260
Certification status	Not Qualified
Regulator type	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height	2.63 mm
surface mount	YES
technology	BIPOLAR
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	2.28 mm
Terminal location	SINGLE
Maximum time at peak reflow temperature	30
Maximum voltage tolerance	4%
width	6.1 mm
Base Number Matches	1

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L4931

Very low drop voltage regulators with inhibit

Datasheet

production data

Description

The L4931 is a very low drop regulator available

in SO-8, DPAK, PPAK and TO-92 packages and

in a wide range of output voltages.

PPAK

TO-92

The very low drop voltage (0.4 V) and the very

low quiescent current make it particularly suitable

for low noise, low power applications and

especially in battery-powered systems.

A TTL compatible shutdown logic control function

is available in PPAK and SO-8 packages. This

means that when the device is used as a local

regulator, a part of the board can be put in

standby mode, decreasing the total power

consumption. It requires only a 2.2 µF capacitor

for stability allowing space and cost saving.

The L4931 is available as automotive-grade in

SO-8 package only. This device is qualified

according to the specification AEC-Q100 of the

automotive market, in the temperature range from

40 °C to 125 °C, and the statistical tests: PAT,

SYL, SBL are performed.

DPAK

SO-8

Features

•

Very low dropout voltage (0.4 V)

•

Very low quiescent current

•

Typ. 50 µA in OFF mode, 600 µA in ON mode

•

Output current up to 250 mA

•

Logic controlled electronic shutdown

•

Output voltages: 2.7; 3.3; 3.5; 5; 8; 12 V

•

Automotive-grade product: 2.7 V, 3.3 V V

OUT

SO-8 package only

•

Internal current and thermal limit

•

Only 2.2 µF for stability

•

Available in ± 1% (AB) or 2% (C) selection at 25

°C

•

Supply voltage rejection: 70 dB typ. for 5 V

version

•

Temperature range: from -40 to 125 °C

October 2013

This is information on a product in full production.

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www.st.com

L4931

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.

Table 20.

Table 21.

Table 22.

Table 23.

Table 24.

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

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

L4931Cxx27 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

L4931Cxx27-TRY (automotive-grade) electrical characteristics. . . . . . . . . . . . . . . . . . . . . 10

L4931ABxx33 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

L4931Cxx33 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

L4931Cxx33-TRY (automotive-grade) electrical characteristics. . . . . . . . . . . . . . . . . . . . . 13

L4931ABxx35 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

L4931Cxx35 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

L4931ABxx50 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

L4931Cxx50 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

L4931ABxx80 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

L4931Cxx80 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

L4931ABxx120 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

L4931Cxx120 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

TO-92 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

PPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

DPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

SO-8 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

TO-92 tape and reel mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

PPAK and DPAK tape and reel mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

SO-8 tape and reel mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

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List of figures

L4931

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.

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

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

Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Line regulation vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Dropout voltage vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Supply current vs input voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Supply current vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Short-circuit current vs dropout voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

SVR vs input voltage signal frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

TO-92 drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

PPAK drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

DPAK drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

DPAK footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

SO-8 drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

TO-92 tape and reel dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Tape for PPAK and DPAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Reel for PPAK and DPAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

SO-8 tape and reel dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4/38

DocID4340 Rev 18

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