The UCC3813-x device family of high-speed, low-power integrated circuits contains all of the control and drive components required for off-line and DC-to-DC fixed-frequency current-mode switching power supplies with minimal parts count.
These devices have the same pin configuration as the UC384x device family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.
The UCC3813-x device family offers a variety of package options, temperature-range options, choice of maximum duty cycle, and choice of critical voltage levels. Devices with lower reference voltage such as the UCC3813-3 and UCC3813-5 fit best into battery operated systems, while the higher reference and the higher UVLO hysteresis of the UCC3813-2 device and UCC3813-4 device make these ideal choices for use in off-line power supplies.
The UCC2813-x device series is specified for operation from –40°C to 85°C and the UCC3813-x device series is specified for operation from 0°C to 70°C.
Part number | Order | Topology | Control method | VCC (Min) (V) | VCC (Max) (V) | Frequency (Max) (kHz) | UVLO thresholds on/off (V) | Duty cycle (Max) (%) | Gate drive (Typ) (A) | Features | Rating | Operating temperature range (C) | Package Group | Package size: mm2:W x L (PKG) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
UCC3813-3 |
|
Boost
Buck Flyback Forward |
Current | 4.1 | 11 | 1000 | 4.1/3.6 | 100 | 1 |
Adjustable Switching Frequency
Current Limiting Dead Time Control Error Amplifier Leading Edge Blanking Multi-topology Soft Start |
Catalog | 0 to 70 |
PDIP | 8
SOIC | 8 TSSOP | 8 |
8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8) 8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8) |
UCC3813-0 |
|
Boost
Buck Flyback Forward |
Current | 7.2 | 11 | 1000 | 7.2/6.9 | 100 | 1 |
Adjustable Switching Frequency
Current Limiting Dead Time Control Error Amplifier Leading Edge Blanking Multi-topology Soft Start |
Catalog | 0 to 70 |
PDIP | 8
SOIC | 8 TSSOP | 8 |
8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8) 8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8) |
UCC3813-1 |
|
Boost
Buck Flyback Forward |
Current | 9.4 | 11 | 1000 | 9.4/7.4 | 50 | 1 |
Adjustable Switching Frequency
Current Limiting Dead Time Control Error Amplifier Leading Edge Blanking Multi-topology Soft Start |
Catalog | 0 to 70 |
PDIP | 8
SOIC | 8 TSSOP | 8 |
8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8) 8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8) |
UCC3813-2 |
|
Boost
Buck Flyback Forward |
Current | 12.5 | 11 | 1000 | 12.5/8.3 | 100 | 1 |
Adjustable Switching Frequency
Current Limiting Dead Time Control Error Amplifier Leading Edge Blanking Multi-topology Soft Start |
Catalog | 0 to 70 |
PDIP | 8
SOIC | 8 TSSOP | 8 |
8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8) 8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8) |
UCC3813-4 |
|
Boost
Buck Flyback Forward |
Current | 12.5 | 11 | 1000 | 12.5/8.3 | 50 | 1 |
Adjustable Switching Frequency
Current Limiting Dead Time Control Error Amplifier Leading Edge Blanking Multi-topology Soft Start |
Catalog | 0 to 70 |
PDIP | 8
SOIC | 8 TSSOP | 8 |
8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8) 8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8) |
UCC3813-5 | Samples not available |
Boost
Buck Flyback Forward |
Current | 4.1 | 11 | 1000 | 4.1/3.6 | 50 | 1 |
Adjustable Switching Frequency
Current Limiting Dead Time Control Error Amplifier Leading Edge Blanking Multi-topology Soft Start |
Catalog |