
Allicdata Part #: | 296-14337-5-ND |
Manufacturer Part#: |
UCC38084PW |
Price: | $ 2.52 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | IC REG CTRLR MULT TOP 8TSSOP |
More Detail: | Buck, Boost, Half-Bridge, Push-Pull Regulator Posi... |
DataSheet: | ![]() |
Quantity: | 47 |
1 +: | $ 2.29320 |
10 +: | $ 2.05695 |
100 +: | $ 1.68550 |
500 +: | $ 1.43484 |
1000 +: | $ 1.21010 |
Frequency - Switching: | 200kHz |
Base Part Number: | UCC38084 |
Supplier Device Package: | 8-TSSOP |
Package / Case: | 8-TSSOP (0.173", 4.40mm Width) |
Operating Temperature: | 0°C ~ 70°C (TA) |
Control Features: | Current Limit, Frequency Control |
Serial Interfaces: | -- |
Clock Sync: | No |
Synchronous Rectifier: | Yes |
Duty Cycle (Max): | 49% |
Series: | -- |
Voltage - Supply (Vcc/Vdd): | 4.1 V ~ 15 V |
Output Phases: | 1 |
Number of Outputs: | 2 |
Topology: | Buck, Boost, Half-Bridge, Push-Pull |
Output Configuration: | Positive |
Function: | Step-Up, Step-Down, Step-Up/Step-Down |
Output Type: | Transistor Driver |
Part Status: | Active |
Packaging: | Tube |
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Voltage Regulators
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DC DC Switching Controllers
- UCC38084PW application field and working principle
- Wide input voltage range, from 4.5V to 32V;
- Selectable operating frequencies, up to 500KHz;
- Programmable under voltage lockout (UVLO) protection;
- Integrated bootstrap diode-capacitor circuitry;
- Integrated control logic and gate drivers;
- Integrated bias/feedback current sources;
- Adjustable soft-start time;
- Over temperature protection;
- Under voltage reset;
- Wide operating temperature range;
- Small size and low power consumption;
- Over current protection;
- Comparator with hysteresis;
- Low shutdown current.
The UCC38084PW, also known as the "Unique Universal Control Chip", is a dual channel, current-mode, variable Pulse-Width Modulation (PWM) switching controller from Texas Instruments. It has been designed to work in a wide range of applications, such as motor control, LED and lighting applications, telecom and datacom systems, servers and network power applications, inverters, and PFC preregulators, among others.
The UCC38084PW has many features that make it suitable for use in these kinds of applications, such as:
The UCC38084PW can also be configured to control either one or two independent synchronous boost switching converters or two independent flyback converters. This makes it highly suitable to applications that require either single- or dual-channel control. The device is also available in a QFN24 package, making it easier to use in dense, multi-channel designs.
The UCC38084PWs main component is a constant-on-time (COT) PWM current-mode controller. The controller works by sampling the load current on a cycle-by-cycle basis. The current is compared to a reference current, and the error between the two is used to compute the current on-time of the switching MOSFET. This allows for directional current flow from the input voltage to the output voltage, and since the COT algorithm works by sampling the load current, it is able to adjust the output voltage to the desired level.
The UCC38084PW integrates several options for user-programmable operating parameters. Device start-up and shutdown, variable PWM switching frequency, and variable soft-start time can all be adjusted. The device also has several onboard protection features and comprehensive reset & fault-logic capabilities. Additionally, the device has several control pins and analog voltage inputs, giving designers more flexibility when designing the control loop.
The UCC38084PWs versatility and flexibility makes it the ideal choice for many power conversion applications. The device’s wide input voltage range, adjustable PWM switching frequency, and onboard protection and reset logic make it suitable for use in a wide range of applications. The device\'s small size and low power consumption also make it the ideal choice for many space- and power-sensitive applications.
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PMIC
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