si-3018km Allegro MicroSystems, Inc., si-3018km Datasheet

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si-3018km

Manufacturer Part Number
si-3018km
Description
1 A, Low-dropout, 1.8 V Regulator
Manufacturer
Allegro MicroSystems, Inc.
Datasheet

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Input Voltage, V
Output Current, I
Enable Input Voltage, V
Junction Temperature, T
Storage Temperature Range,
* Output current rating is limited by input
ABSOLUTE MAXIMUM RATINGS
voltage, duty cycle, and ambient tempera-
ture. Under any set of conditions, do not
exceed a junction temperature of +125°C.
T
S
. . . . . . . . . . . . -30°C to +125°C
I
O
. . . . . . . . . . . . .
. . . . . . . . . . . . . 1 A*
E
J
. . . . . . . . .
. . . . +125°C
17 V
V
I
SI-3018KM
consumer applications; embedded core, memory, or logic supplies; TVs,
VCRs, and office equipment, the SI-3018KM voltage regulator offers
the reduced dropout voltage and low quiescent current essential for
improved efficiency. This device delivers a regulated output at up to
1 A. Integrated thermal and overcurrent protection enhance overall
system reliability. Devices with other output voltages are also available.
voltage is approached, an ideal feature in standby/resume power systems
where data integrity is crucial. Regulator accuracy and excellent
temperature characteristics are provided by a bandgap reference. An
LS-TTL/CMOS-compatible input gives the designer complete control
over power up, standby, or power down. A pnp pass element provides a
dropout voltage of less than 600 mV at 1 A of load current. Low output
voltages eliminate the need for expensive PWM buck converters. The
low dropout voltage permits more efficient regulation before output
regulation is lost.
plastic package with ground tab to provide a low-resistance path for
maximum heat dissipation.
FEATURES
APPLICATIONS
Always order by complete part number, e.g., SI-3018KM-TL ,
where “-TL” indicates tape and reel.
from Allegro MicroSystems
Sanken Power Devices
1 A Output Current at 1.8 V
0.6 V Maximum Dropout Voltage at I
Fast Transient Response
1 µA Maximum Standby Current
Remote Voltage Sensing
Foldback Current Limiting
Ground Tab for Superior Heat Dissipation
Thermal Protection
TVs, VCRs, Electronic Games
Embedded Core, Memory, or Logic Supplies
Printers and Other Office Equipment
Industrial Machinery
Secondary-Side Stabilization of Multi-Output SMPS
Designed to meet the high-current requirements in industrial and
Quiescent current does not increase significantly as the dropout
This device is supplied in a 5-lead TO-252 style surface-mount
1 A, Low-Dropout, 1.8 V Regulator
O
= 1 A

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si-3018km Summary of contents

Page 1

... APPLICATIONS V TVs, VCRs, Electronic Games I Embedded Core, Memory, or Logic Supplies Printers and Other Office Equipment Industrial Machinery Secondary-Side Stabilization of Multi-Output SMPS Always order by complete part number, e.g., SI-3018KM-TL , where “-TL” indicates tape and reel. Sanken Power Devices from Allegro MicroSystems = ...

Page 2

... SI-3018KM 1 A, Low-Dropout, 1.8 V Regulator Allowable Package Power Dissipation 2 FUNCTIONAL BLOCK DIAGRAM Recommended Operating Conditions DC Output Current Operating Ambient Temp. Operating Junction Temp. For the availability of parts meeting -40°C requirements, contact Allegro’s Sales Representative. This data sheet is based on Sanken data sheet SSJ-02296 ...

Page 3

... V Output Output OFF 2 2.5 V, 100 SI-3018KM 1 A, Low-Dropout, 1.8 V Regulator Min. Typ. 1.764 1.800 1.836 — — — ±0.3 1.1 — — — — — — — — — = 2.0 V — — E — ...

Page 4

... SI-3018KM 1 A, Low-Dropout, 1.8 V Regulator Dropout Voltage Line Regulation ENABLE Control Voltage 4 TYPICAL CHARACTERISTICS ( 25° Low-Voltage Behavior Load Regulation ENABLE Control Current 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 GND Pin Current Overcurrent Protection Thermal Protection ...

Page 5

... SENSE and OUTPUT. The current flowing into SENSE is typically 90 µA ±30%. To minimize the effect of I and temperature on R resistor be added between SENSE and GND to increase the current in R SI-3018KM 1 A, Low-Dropout, 1.8 V Regulator ) between EXT , it is recommended that a 7.5 k EXT ...

Page 6

... SI-3018KM 1 A, Low-Dropout, 1.8 V Regulator Determination of DC Input Voltage. The minimum input voltage V (min) should be higher than the sum of the I fixed output voltage and the maximum rated dropout voltage. Overcurrent Protection. The SI-3000KM series has a built-in fold-back type overcurrent protection circuit, which limits the output current at a start-up mode ...

Page 7

... Tab Temperature (T ) Measured Here T Terminal Finish: Pure Sn level interconnect category (e3) Product Weight: Approx. 0.33 g 3000 pieces per reel. www.allegromicro.com Dimensions in Millimeters Recommended Land Pattern SI-3018KM 1 A, Low-Dropout, 1.8 V Regulator 7 ...

Page 8

... SI-3018KM 1 A, Low-Dropout, 1.8 V Regulator Tape and Reel Dimensions in Millimeters 8 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 W1: 16.4 +2/-0 mm W2: 22.4 mm Max. W3: 16.4 +3/-0.5 mm ...

Page 9

... Application and operation examples described in this publica- tion are given for reference only and Sanken and Allegro assume no responsibility for any infringement of industrial property rights, intellectual property rights, or any other rights of Sanken or Allegro or any third party that may result from its use. SI-3018KM EI16EI 9 ...

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