Overview
The LM723CD, produced by STMicroelectronics, is a high-precision voltage regulator integrated circuit. It is designed primarily for series regulator applications and offers a wide range of features that make it versatile for various power supply designs. The LM723CD can operate as a linear or switching regulator and supports both positive and negative supply configurations. It is assembled in a 14-lead dual in-line plastic package (DIP-14) or SO-14 micro package.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage (VI) | 9.5 | 40 | V | |
| Output Voltage (VO) | 2.0 | 37 | V | |
| Output Current (IO) without External Pass Transistor | 150 | mA | ||
| Line Regulation (VI = 12V to 15V) | 0.01 | 0.1 | % | |
| Load Regulation (IO = 1 mA to 50 mA) | 0.03 | 0.15 | % | |
| Reference Voltage (VREF) | 6.95 | 7.15 | 7.35 | V |
| Operating Temperature Range | 0 | 70 | °C | |
| Storage Temperature Range | -65 | 150 | °C | |
| Thermal Resistance Junction-Ambient (DIP-14) | 200 | °C/W |
Key Features
- High-precision voltage regulation with adjustable output voltage from 2V to 37V.
- Output current up to 150 mA without external pass transistors; higher currents possible with external transistors.
- Low standby current drain and provision for either linear or foldback current limiting.
- Internal current limiting and remote shutdown capabilities.
- Operates in series, shunt, switching, or floating configurations.
- High ripple rejection (up to 86 dB with CREF = 5 μF).
- Low output noise voltage (2.5 μVrms with CREF = 5 μF).
- Long-term stability of 0.1%/1000 hours.
Applications
- Series voltage regulators for high-voltage applications.
- Shunt regulators for voltage stabilization.
- Switching regulators for efficient power conversion.
- Current regulators and temperature controllers.
- Negative voltage regulators and floating regulators.
- Remote shutdown regulators with current limiting.
Q & A
- What is the maximum input voltage for the LM723CD?
The maximum input voltage for the LM723CD is 40V.
- What is the adjustable output voltage range of the LM723CD?
The output voltage can be adjusted from 2V to 37V.
- What is the maximum output current without an external pass transistor?
The maximum output current without an external pass transistor is 150 mA.
- Can the LM723CD be used in switching regulator applications?
Yes, the LM723CD can be used in switching regulator applications.
- What is the operating temperature range for the LM723CD?
The operating temperature range for the LM723CD is 0°C to 70°C.
- Does the LM723CD have built-in current limiting?
Yes, the LM723CD has internal current limiting and provisions for adjustable current limiting.
- What is the ripple rejection of the LM723CD?
The ripple rejection is up to 86 dB with a 5 μF capacitor at the reference pin.
- Can the LM723CD be used in negative voltage regulator configurations?
Yes, the LM723CD can be used in negative voltage regulator configurations.
- What is the long-term stability of the LM723CD?
The long-term stability is 0.1%/1000 hours.
- Can the LM723CD be used for remote shutdown applications?
Yes, the LM723CD supports remote shutdown with current limiting.
