SI-3018LSA Allegro Microsystems Inc, SI-3018LSA Datasheet

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SI-3018LSA

Manufacturer Part Number
SI-3018LSA
Description
Analog IC
Manufacturer
Allegro Microsystems Inc
Datasheet

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CONNECTION
Input Voltage, V
Supply Voltage, V
Continuous Output Current, I
Logic Input Voltage, V
Package Power Dissipation,
Output Junction Temperature,
Operating Temperature Range,
Storage Temperature Range,
* Output current rating may be limited by duty
cycle, ambient temperature, and heat sinking.
Under any set of conditions, do not exceed the
specified current rating or a junction temperature
of 150˚C.
† Fault conditions that produce excessive
junction temperature will activate the device’s
thermal protection circuitry. These conditions
can be tolerated but should be avoided.
ABSOLUTE MAXIMUM RATINGS
P
T
T
T
INTERNAL
J
A
stg
D
SUPPLY
ENABLE
........................................ See Graph
............................................ +150 C†
............................... -30 C to +100 C
............................. -30 C to +150 C
IN
1
2
3
4
IC
V
I
................................ 16 V
S
S
............................ 16 V
E
......................... V
VR
O
SUB
........ 1.0 A*
8
7
6
5
Dwg. PK-012
OUT
OUT
GND
GND
S
from Allegro MicroSystems
SI-3018LSA
integration and reliability in low-voltage, high-current, linear regulator
applications such as personal computers (PCs) and set-top boxes. Each
device incorporates a monolithic low-level reference and control circuit
with a high-current pnp transistor in a power multi-chip module
(PMCM™). Regulated output voltages of 2.5 V or 3.3 V are also
available.
Regulator accuracy of 2 % and excellent temperature characteristics
are provided. The logic-compatible ENABLE input gives the designer
complete control over power up, power down, and standby or sleep.
surface-mount package (tape and reel) with enhanced power-dissipating
qualities. They are rated for continuous operation between -30 C and
+100 C.
FEATURES
Always order by complete part number: SI-3018LSA-TL , where “-TL”
indicates tape and reel.
Sanken Power Devices
LOW-VOLTAGE, HIGH-CURRENT
The SI-3018LSA is designed to meet the requirement for increased
The high-current pass element provides an output current to 1 A.
These devices are supplied in a fully molded 8-lead miniature
1 A Output Current
LSTTL/CMOS-Compatible On/Off Control
Less Than 1 A “Sleep” Current
Internal Foldback Overcurrent Limiting
Internal Thermal Protection
Surface-Mount Package
1.8 V LINEAR REGULATOR

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SI-3018LSA Summary of contents

Page 1

... A Output Current LSTTL/CMOS-Compatible On/Off Control S Less Than 1 A “Sleep” Current Internal Foldback Overcurrent Limiting Internal Thermal Protection Surface-Mount Package Always order by complete part number: SI-3018LSA-TL , where “-TL” indicates tape and reel. Sanken Power Devices from Allegro MicroSystems ™ ...

Page 2

... SI-3018LSA LOW-VOLTAGE, HIGH-CURRENT 1.8 V LINEAR REGULATOR INPUT 1 INTERNAL 2 CONNECTION SUPPLY 3 ENABLE 4 GROUND 5 FUNCTIONAL BLOCK DIAGRAM Leads 7 and 8 are soldered to the copper area and provide heat sinking of the pass transistor. RECOMMENDED OPERATING CONDITIONS Max. Input Voltage, V Output Current, I Output Junction Temperature Range, T ...

Page 3

... ELECTRICAL CHARACTERISTICS Characteristic Symbol www.allegromicro.com LOW-VOLTAGE, HIGH-CURRENT Test Conditions SI-3018LSA 1.8 V LINEAR REGULATOR Limits Min. Typ. Max. Units ...

Page 4

... SI-3018LSA LOW-VOLTAGE, HIGH-CURRENT 1.8 V LINEAR REGULATOR TYPICAL CHARACTERISTICS at T Dropout voltage 0.6 0.5 0.4 0.3 0.2 0 0.2 0.4 0.6 OUTPUT CURRENT in AMPERES Overcurrent protection 1.0 0 0.5 1.0 OUTPUT CURRENT in AMPERES 1.86 1.84 1.82 1.80 1.78 1.76 1.74 0.8 1.0 1.2 Dwg ...

Page 5

... INPUT VOLTAGE www.allegromicro.com LOW-VOLTAGE, HIGH-CURRENT 0 8 Dwg. GK-029 ENABLE input current 3 0.5 1.0 1.5 2.0 ENABLE VOLTAGE in VOLTS SI-3018LSA 1.8 V LINEAR REGULATOR = 25 C (cont’d) A GND current 5 2.0 4.0 6.0 INPUT VOLTAGE 2.5 3.0 Dwg. GK-023 0 8 Dwg. GK-030 ...

Page 6

... JUNCTION-TO-AMBIENT THERMAL RESISTANCE in C/W APPLICATIONS INFORMATION down resistor. If this terminal is not connected (open-circuit fault), the device output is turned off. Overcurrent protection. The SI-3018LSA includes an overcurrent protection circuit, which limits the output current at start up. It thus cannot be used with 1) a constant-current load, ...

Page 7

... Lead spacing tolerance is non-cumulative. 3. Leads 7 and 8 are internally connected together and provide heat sinking of the pass transistor. www.allegromicro.com LOW-VOLTAGE, HIGH-CURRENT Dimensions in Millimeters (controlling dimensions 1.27 BSC 5.1 0.4 0.10 MAX. SI-3018LSA 1.8 V LINEAR REGULATOR 0.25 0.10 6.2 0.3 0.5 0 Dwg. MK-006-8 mm ...

Page 8

... SI-3018LSA LOW-VOLTAGE, HIGH-CURRENT 1.8 V LINEAR REGULATOR Tape and Reel Dimensions in Millimeters 0.3 2.5 CENTER LINES OF CAVITY COVER TAPE 2.0 180 (controlling dimensions) 0.7 8.0 USER DIRECTION OF UNREELING ACCESS HOLE 13 0.2 TAPE SLOT IN CORE FOR TAPE START 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Dwg ...

Page 9

... 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. www.allegromicro.com LOW-VOLTAGE, HIGH-CURRENT 1.8 V LINEAR REGULATOR SI-3018LSA ...

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