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Bare Die Data Sheet: SiS1084L-3.3

SiS1084L-3.3 is a fixed 3.3 Volt 5A positive low dropout regulator includes zener trimmed bandgap reference, current limiting & thermal shutdown. Output voltage is set using two external resistors. Dropout voltage of 1.5V is guaranteed at 5A load.
This bare die suits hybrid & MCM designs needing high output current, fixed 3.3V regulation & smallest size. Other than lower input voltage range, the part is functionally equivalent to the industry LM1084 or LT1084 with ~40% footprint reduction.
  • 2% voltage output tolerance over full temperature range
  • 1.5V dropout voltage guaranteed at maximum output current
  • Optimized for small die size
  • Internal Short-Circuit Current Limiting
  • Internal Thermal Overload Protection
  • Military Temperature Range for High Reliability


  • High efficiency linear regulators
  • Battery chargers
  • Post-regulation for switching supplies
  • Constant-current regulator
  • Microprocessor supply
Silicon Supplies
  Electrical Datasheet

Die Physical Data:
Footprint: 2.621mm² (4062.252mil²)
X: 1560µm (61mil)
Y: 1680µm (66mil)
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In Stock: Available on request
Product Families: Used for this device are tabulated below.
  • Output: Fixed Output
  • Output Capacitor: Ceramic
VIN (MIN): 2.60V
VIN (MAX): 12.00V
IOUT (MAX): 5.50A
VOUT (MIN): 3.30V
VOUT (MAX): 3.30V
VDO: 1,300mV
Accuracy: 1.50%
IQ: 10.000mA
Noise Figure: 38.0µVrms
PSRR @ 100KHz: 30dB
Other Detail: Important information for this device is tabulated below.
Traffic light setting for Minimum Order Quantity indicates the following:
  • Green:Available from stock or at low factory MOQ.
  • Amber: Available on factory order with MOQ.
  • Red: High factory MOQ may apply, please ask for details.
Traffic light setting for High Reliability indicates the following:
  • Green: This bare die is specified and tested for use in high reliability applications.
  • Amber: This bare die can meet higher reliability specifications with additional testing & qualification, please ask for details.
  • Red: This bare die is not specified or specifically designed for use in high reliability applications.
Traffic light setting for Space Grade indicates the following:
  • Green: This bare die is qualified for space applications or has space level qualification data, please ask for details.
  • Amber: This bare die can be specified for space applications with additional testing and qualification, please ask for details.
  • Red: Suitability of this bare die for space applications is unknown and requires further qualification, please ask for details.