YW UTC3844
| Manufacturer | YWAsian Brands |
| MPN | UTC3844 |
| LCSC Part # | C557740 |
| Packaging | DIP-8 |
| Customer # | |
| Key Attributes | Current Mode PWM Control Circuits |
| Datasheet |
Products Specifications
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | YW | |
| Packaging | DIP-8 | |
| Operating Temperature | 0℃~+70℃ | |
| Frequency - Switching | 52kHz | |
| Function | - | |
| Number of Outputs | 1 | |
| Features | Cycle-by-cycle current limiting | |
| Output Type | - | |
| Topology | - | |
| Operating Voltage | - | |
| Switch tube (built-in/external) | - | |
| Output Voltage | - | |
| Output Current | 1A | |
| Quiescent Current | - |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | YW | |
| Packaging | DIP-8 | |
| Operating Temperature | 0℃~+70℃ | |
| Frequency - Switching | 52kHz | |
| Function | - | |
| Number of Outputs | 1 | |
| Features | Cycle-by-cycle current limiting |
| Type | Description | |
|---|---|---|
| Output Type | - | |
| Topology | - | |
| Operating Voltage | - | |
| Switch tube (built-in/external) | - | |
| Output Voltage | - | |
| Output Current | 1A | |
| Quiescent Current | - |
Introduction
The UTC3844D/E provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout featuring start up current less than 0.5 mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N channel MOSFETs, is low in the off state.
Features
- Optimized for off-line and DC to DC converts
- Low start up current (<0.5 mA)
- Automatic feed forward compensation
- Pulse-by-Pulse current limiting
- Enhanced load response characteristics
- Under-voltage lockout with hysteresis
- Double pulse Suppression
- High current totem pole output
- Internally trimmed bandgap reference
- 500 kHz operation
- Low Ro error amp
| Qty | Unit Price | Total Amount |
|---|---|---|
| 5+ | $ 0.192 | $ 0.96 |
| 50+ | $ 0.1435 | $ 7.18 |
| 150+ | $ 0.1255 | $ 18.83 |
| 500+ | $ 0.1029 | $ 51.45 |
| 2,000+ | $ 0.0929 | $ 185.80 |
| 4,000+ | $ 0.0869 | $ 347.60 |
Standard Packaging50/Full Tube | ||
Products Specifications
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | YW | |
| Packaging | DIP-8 | |
| Operating Temperature | 0℃~+70℃ | |
| Frequency - Switching | 52kHz | |
| Function | - | |
| Number of Outputs | 1 | |
| Features | Cycle-by-cycle current limiting | |
| Output Type | - | |
| Topology | - | |
| Operating Voltage | - | |
| Switch tube (built-in/external) | - | |
| Output Voltage | - | |
| Output Current | 1A | |
| Quiescent Current | - |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | YW | |
| Packaging | DIP-8 | |
| Operating Temperature | 0℃~+70℃ | |
| Frequency - Switching | 52kHz | |
| Function | - | |
| Number of Outputs | 1 | |
| Features | Cycle-by-cycle current limiting |
| Type | Description | |
|---|---|---|
| Output Type | - | |
| Topology | - | |
| Operating Voltage | - | |
| Switch tube (built-in/external) | - | |
| Output Voltage | - | |
| Output Current | 1A | |
| Quiescent Current | - |
Introduction
The UTC3844D/E provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout featuring start up current less than 0.5 mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N channel MOSFETs, is low in the off state.
Features
- Optimized for off-line and DC to DC converts
- Low start up current (<0.5 mA)
- Automatic feed forward compensation
- Pulse-by-Pulse current limiting
- Enhanced load response characteristics
- Under-voltage lockout with hysteresis
- Double pulse Suppression
- High current totem pole output
- Internally trimmed bandgap reference
- 500 kHz operation
- Low Ro error amp
C557740 EasyEDA Library
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | |
| ECCN | |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
| Type | Details |
|---|---|
| RoHS | |
| ECCN | |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |



