Texas Instruments UCC3804DTR
- Part Number:
- UCC3804DTR
- Manufacturer:
- Texas Instruments
- Ventron No:
- 3258611-UCC3804DTR
- Description:
- 12V, 1A low power BICMOS 1MHz current mode PWM with 12.5V/8.3V UVLO and 50% duty cycle, 0C to 70C
- ECAD Model:
-
- Datasheet:
- ucc3804
Description
The UCC3805 PWM control IC is used in this Flyback inverter application to perform three functions: control, switching, and output rectification. During the PWM ON-time, the upper totem pole switch of the IC's output is turned on applying the 5-volt input across the inductor (Lo) which stores energy. The PWM output goes low when the correct duty cycle is achieved to regulate the output voltage, Vo. This turns off the upper totem pole switch and turns on the lower one, connecting the inductor to the output voltage (-3V) rail. The lower totem pole switch acts as a synchronous rectifier in parallel with the internal MOS body diode. This condition necessitates discontinuous inductor current operation at all times to avoid high cross-conduction currents in the IC output stage.
Features
Achieves 73% efficiency at 0.2 Watt
Converts 5V input to -3V output
Uses UCC3805 PWM control IC
Compact design suitable for "on-card" regulators and distributed power applications
Applications
On-card regulators
Distributed power applications
The UCC3805 PWM control IC is used in this Flyback inverter application to perform three functions: control, switching, and output rectification. During the PWM ON-time, the upper totem pole switch of the IC's output is turned on applying the 5-volt input across the inductor (Lo) which stores energy. The PWM output goes low when the correct duty cycle is achieved to regulate the output voltage, Vo. This turns off the upper totem pole switch and turns on the lower one, connecting the inductor to the output voltage (-3V) rail. The lower totem pole switch acts as a synchronous rectifier in parallel with the internal MOS body diode. This condition necessitates discontinuous inductor current operation at all times to avoid high cross-conduction currents in the IC output stage.
Features
Achieves 73% efficiency at 0.2 Watt
Converts 5V input to -3V output
Uses UCC3805 PWM control IC
Compact design suitable for "on-card" regulators and distributed power applications
Applications
On-card regulators
Distributed power applications
Texas Instruments UCC3804DTR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments UCC3804DTR.
- Factory Lead Time6 Weeks
- Lifecycle StatusACTIVE (Last Updated: 3 days ago)
- MountSurface Mount
- Mounting TypeSurface Mount
- Package / Case8-SOIC (0.154, 3.90mm Width)
- Number of Pins8
- Weight72.603129mg
- Operating Temperature-40°C~85°C TA
- PackagingTape & Reel (TR)
- JESD-609 Codee4
- Pbfree Codeyes
- Part StatusActive
- Moisture Sensitivity Level (MSL)1 (Unlimited)
- Number of Terminations8
- ECCN CodeEAR99
- Terminal FinishNickel/Palladium/Gold (Ni/Pd/Au)
- SubcategorySwitching Regulator or Controllers
- TechnologyBICMOS
- Terminal PositionDUAL
- Terminal FormGULL WING
- Peak Reflow Temperature (Cel)260
- Number of Functions1
- Supply Voltage10V
- Frequency1MHz
- Base Part NumberUCC3804
- Pin Count8
- Number of Outputs1
- Output Voltage1V
- Input Voltage-Nom10V
- Analog IC - Other TypeSWITCHING CONTROLLER
- Output Current1A
- Voltage - Supply (Vcc/Vdd)8.3V~12V
- Control FeaturesFrequency Control
- Input Voltage (Min)9V
- TopologyBoost, Buck, Flyback, Forward
- Control ModeCURRENT-MODE
- Frequency - SwitchingUp to 1MHz
- Control TechniquePULSE WIDTH MODULATION
- Rise Time41ns
- Supply Current-Max (Isup)25mA
- Fall Time (Typ)44 ns
- Switcher ConfigurationSINGLE
- Internal Switch(s)No
- Fault ProtectionCurrent Limiting
- Max Duty Cycle50 %
- Duty Cycle49%
- Voltage - Start Up12.5V
- Height1.75mm
- Length4.9mm
- Width3.91mm
- Thickness1.58mm
- REACH SVHCNo SVHC
- RoHS StatusROHS3 Compliant
- Lead FreeLead Free
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