SI3033LSA Datasheet, PDF (1/10 Pages) Allegro MicroSystems – LOW-VOLTAGE, HIGH-CURRENT 3.3 V LINEAR REGULATOR

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, V_I ................................ 16 V
Supply Voltage, V_S ............................ 16 V
Continuous Output Current, I_O ........ 1.0 A*
Logic Input Voltage, V_E ......................... V_S
Package Power Dissipation,
P_D ........................................ See Graph
Output Junction Temperature,
T_J ............................................ +150°C†
Operating Temperature Range,
T_A ............................... -30°C to +100°C
Storage Temperature Range,
T_stg ............................. -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