UCC283T-ADJ
LDO Regulator Pos 1.22V to 8.5V 3A 5-Pin(5+Tab) TO-220 Tube
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Part Number : UCC283T-ADJ
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Package/Case : TO-220-5
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Brands : TI
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Components Categories : Voltage Regulators - Linear
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Datesheet : UCC283T-ADJ DataSheet (PDF)
Overview of UCC283T-ADJ
The UCC2833/5/ADJ family of positive linear series pass voltage regulators are tailored for low-drop-out applications where low quiescent power is important. Fabricated with a BiCMOS technology ideally suited for low input-to-output differential applications, the UCC2835 passes 3 A while requiring only 0.45 V of typical input voltage headroom (ensured 0.6-V dropout).
These regulators include reverse voltage sensing that prevents current in the reverse direction. Quiescent current is always less than 650 µA. These devices have been internally compensated in such a way that the need for a minimum output capacitor has been eliminated.
UCC2833 and UCC2835 versions are in 3-lead packages and have preset outputs at 3.3 V and 5.0 V respectively. The output voltage is regulated to 1.5% at room temperature. The UCC283ADJ version, in a 5-lead package, regulates the output voltage programmed by an external resistor ratio.
Short-circuit current is internally limited. The device responds to a sustained overcurrent condition by turning off after a tON time delay. The device then stays off for a period, tOFF, that is 32 times the tON delay. The device then begins pulsing on and off at the tON/(tON +tOFF) duty cycle of 3%. This drastically reduces the power dissipation during short-circuit and means heat sinks need only accommodate normal operation. On the 3-leaded versions of the device tON is fixed at 750 µs, on the adjustable 5-leaded versions an external capacitor sets the on time. The off time is always 32 × tON. The external timing control pin, CT, on the 5-leaded versions also serves as a shutdown input when pulled low.
Internal power dissipation is further controlled with thermal overload protection circuitry. Thermal shutdown occurs if the junction temperature exceeds 165°C. The chip remains off until the temperature has dropped 20°C.
The UCC283 series is specified for operation over the industrial range of 40°C to 85°C, and the UCC383 series is specified from 0°C to 70°C. These devices are available in 3- and 5-pin TO220 and TO263 power packages.
Key Features
- Precision Positive Linear Series Pass Voltage Regulation
- 0.45 V Dropout at 3 A
- 50 mV Dropout at 10 mA
- Quiescent Current Under 650 µA Irrespective of Load
- Adjustable (5-Lead) Output Voltage Version
- Fixed (3-Lead) Versions for 3.3-V and 5-V Outputs
- Logic Shutdown Capability
- Short-Circuit Power Limit of (3% × VIN × ISHORT)
- Low VOUT to VIN Reverse Leakage
- Thermal Shutdown
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Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Source Content uid | UCC283T-ADJ | Pbfree Code | Yes |
Rohs Code | Yes | Part Life Cycle Code | Active |
Ihs Manufacturer | TEXAS INSTRUMENTS INC | Part Package Code | SFM |
Package Description | TO-220, SIP5,.1,67TB | Pin Count | 3 |
Reach Compliance Code | compliant | ECCN Code | EAR99 |
HTS Code | 8542.39.00.01 | Samacsys Manufacturer | Texas Instruments |
Adjustability | ADJUSTABLE | Dropout Voltage1-Max | 0.6 V |
Dropout Voltage1-Nom | 0.4 V | Input Voltage-Max | 9 V |
Input Voltage-Min | 2.8 V | JESD-30 Code | R-PSFM-T5 |
JESD-609 Code | e3 | Length | 10.16 mm |
Line Regulation-Max (%/V) | 0.031 | Load Regulation-Max(%) | 0.4% |
Number of Functions | 1 | Number of Outputs | 1 |
Number of Terminals | 5 | Operating Temperature TJ-Max | 150 °C |
Operating Temperature TJ-Min | -55 °C | Operating Temperature-Max | 85 °C |
Operating Temperature-Min | -40 °C | Output Current1-Max | 3 A |
Output Voltage1-Max | 8.5 V | Output Voltage1-Min | 1.2 V |
Package Body Material | PLASTIC/EPOXY | Package Code | TO-220 |
Package Equivalence Code | SIP5,.1,67TB | Package Shape | RECTANGULAR |
Package Style | FLANGE MOUNT | Packing Method | TUBE |
Qualification Status | Not Qualified | Regulator Type | ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR |
Seated Height-Max | 4.7 mm | Surface Mount | NO |
Technology | BICMOS | Terminal Finish | MATTE TIN |
Terminal Form | THROUGH-HOLE | Terminal Pitch | 1.7 mm |
Terminal Position | SINGLE | Voltage Tolerance-Max | 2.5% |
Width | 8.51 mm |
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