UA78L
SLVS010X – JANUARY 1976 – REVISED JUNE 2023
UA78L Series Positive-Voltage Linear Regulators
1 Features
• Input vo...
UA78L
SLVS010X – JANUARY 1976 – REVISED JUNE 2023
UA78L Series Positive-Voltage Linear
Regulators
1 Features
Input voltage range (VI): 4.75 V to 35 V Output voltage range (VO):
– 2.6 V to 15 V (for legacy chip) – 3.3 V to 15 V (for new chip) Output current: Up to 100 mA Quiescent current IQ: 3.8 mA Built-in short-circuit current limiting and thermal protection Stable without any external component Supported temperature range:
– Legacy chip C and AC versions: 0°C to +125°C – Legacy chip AI version: –40°C to +125°C – New chip: –40°C to +125°C Packages:
– 8-pin, 4.9-mm × 3.91-mm SOIC – 3-pin, 4.3-mm × 4.3-mm TO-92 – 3-pin, 4.5-mm × 2.5-mm SOT-89
2 Applications
Motor drives Appliances Building automation Flow transmitters Factory automation and control
3 Description
The UA78L series of fixed-voltage linear
regulators is designed for a wide range of applications. The UA78L series can be used for on-card regulation to eliminate the noise and distribution problems associated with single-point regulation. The UA78L can also be used with power-pass elements to make high-current voltage
regulators. The UA78L series
regulators can deliver up to 100 mA of output current. Additionally, the UA78L does not need an external capacitor for stable operation across the load current range. The internal current-limiting and thermal-shutdown features of these
regulators help protect the device from overload.
For the legacy chip, the UA78L00C and UA78L00AC series are ch...