Overview
The UA723CNE4, produced by Texas Instruments, is a precision integrated-circuit voltage regulator. It is renowned for its high ripple rejection, excellent input and load regulation, and excellent temperature stability. This IC features a temperature-compensated reference-voltage amplifier, an error amplifier, a 150-mA output transistor, and an adjustable-output current limiter. The UA723CNE4 is designed for use in positive or negative power supplies as a series, shunt, switching, or floating regulator, making it versatile for various power supply applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage (VI) | 9.5 to 40 | V |
| Output Voltage (VO) | 2 to 37 | V |
| Output Current (IO) | Up to 150 mA (without external transistor) | mA |
| Operating Temperature Range (TA) | 0 to 70 | °C |
| Line Regulation | Typically 0.01%/V | %/V |
| Load Regulation | Typically 0.1% at 1A load | % |
| Ripple Rejection | 74 dB to 86 dB (depending on frequency and capacitance) | dB |
| Standby Current | 2.3 to 4 mA | mA |
| Package Type | PDIP-14 | - |
Key Features
- 150-mA load current without an external power transistor
- Adjustable current-limiting capability
- Input voltages up to 40 V
- Output adjustable from 2 V to 37 V
- High ripple rejection and excellent input and load regulation
- Excellent temperature stability and low standby current
- Thermal overload protection and short-circuit protection
- Direct replacement for Fairchild uA723C
Applications
- Linear power supplies
- Battery chargers
- Voltage regulation circuits in consumer electronics
- Power management systems
- Signal conditioning applications
- Test equipment
- Communications equipment
Q & A
- What is the maximum output current for the UA723CNE4?
The maximum output current for the UA723CNE4 is 150 mA without an external power transistor. However, it can supply up to 1.5 A with additional pass elements.
- Can this IC be used for battery charger circuits?
- What are the typical line and load regulation specifications?
The UA723CNE4 offers typical line regulation of 0.01%/V and load regulation of 0.1% at a 1A load.
- How does the thermal overload protection work in this IC?
The thermal overload protection feature automatically reduces the output current when excessive heat is detected, preventing damage to the IC.
- What is the operating temperature range for the UA723CNE4?
The operating temperature range for the UA723CNE4 is from 0°C to 70°C.
- What is the ripple rejection of the UA723CNE4?
The ripple rejection of the UA723CNE4 is typically 74 dB to 86 dB, depending on the frequency and capacitance.
- Can the UA723CNE4 be used as a fixed voltage regulator?
- What is the standby current of the UA723CNE4?
The standby current of the UA723CNE4 is typically between 2.3 mA and 4 mA.
- Is the UA723CNE4 RoHS compliant?
- What package types are available for the UA723CNE4?
The UA723CNE4 is available in a PDIP-14 package.
