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PDF SI-3033LSA Data sheet ( Hoja de datos )
| Número de pieza | SI-3033LSA | |
| Descripción | LOW-VOLTAGE/ HIGH-CURRENT 3.3 V LINEAR REGULATOR | |
| Fabricantes | Allegro MicroSystems | |
| Logotipo |  |
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SI-3033LSA
IN 1
INTERNAL
CONNECTION
2
IC
SUPPLY 3 VS
ENABLE 4
8 OUT
7 OUT
VR SUB
6 GND
5 GND
Dwg. PK-012
ABSOLUTE MAXIMUM RATINGS
Input Voltage, VI ................................ 16 V
Supply Voltage, VS ............................ 16 V
Continuous Output Current, IO ........ 1.0 A*
Logic Input Voltage, VE ......................... VS
Package Power Dissipation,
PD ........................................ See Graph
Output Junction Temperature,
TJ ............................................ +150°C†
Operating Temperature Range,
TA ............................... -30°C to +100°C
Storage Temperature Range,
Tstg ............................. -30°C to +150°C
* 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 shutdown circuitry. These conditions
can be tolerated but should be avoided.
LOW-VOLTAGE, HIGH-CURRENT
3.3 V LINEAR REGULATOR
The SI-3033LSA is designed to meet the requirement for increased
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 1.8 V or 2.5 V are also
available.
The high-current pass element provides a low dropout voltage with
output current to 1 A. 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.
These devices are supplied in a fully molded 8-lead miniature
surface-mount package (tape and reel) with enhanced power-dissipating
qualities. They are rated for continuous operation between -30°C and
+100°C.
FEATURES
s 1 A Output Current
s Low Dropout voltage
s LSTTL/CMOS-Compatible On/Off Control
Less Than 1 µA “Sleep” Current
s Internal Foldback Overcurrent Limiting
s Internal Thermal Shutdown
s Surface-Mount Package
Always order by complete part number: SI-3033LSA-TL ,
where “-TL” indicates tape and reel.
TM
1 page  
SI-3033LSA
LOW-VOLTAGE, HIGH-CURRENT
3.3 V LINEAR REGULATOR
3.38
3.36
3.34
3.32
3.30
3.28
3.26
0
TYPICAL CHARACTERISTICS at TA = 25°C (cont’d)
Line regulation
GND current
20
IO = 1 A
IO = 0.5 A
IO = 0 A
15 IO = 1 A
IO = 0.5 A
IO = 0 A
10
5.0
2.0 4.0 6.0 8.0
INPUT VOLTAGE
10 12
Dwg. GK-029-2
0
0 2.0 4.0 6.0 8.0 10 12
INPUT VOLTAGE
Dwg. GK-030-2
60
50
40
30
20
10
0
0
ENABLE input current
VI = VS = 3.3 V
IO = 5 mA
0.5 1.0 1.5 2.0
ENABLE VOLTAGE in VOLTS
2.5 3.0
Dwg. GK-023
www.allegromicro.com
5
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| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet SI-3033LSA.PDF ] | |
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