Part Number: APL5521

Function: Dual-channel, 3.3 V/500 mA and 2.5 V/300mA linear regulator

Package: SOP-8 Type

Manufacturer: Anpec Electronics

Pinouts:

 

Description

The APL5521 is a dual low dropout regulator with output 1 with 3.3V/0.5A and output2 with 2.5V/0.3A output capability. In order to obtain lower drop-out voltage and faster transient response, which is critical for low voltage applications, the APL5221 has been optimized. The dropout voltages are guaran teed at 1.25V at 0.5A for output1 and 1.2V at 0.3A for output 2. Current limit is trimmed to ensure specified output current and controlled short-circuit current. On-chip thermal limiting provides protection against any combination of overload that would create excessive junction temperatures.

 

Features

• Fixed Output Voltage : VOUT1=3.3V/500mA , VOUT2=2.5V/300mA

• Low Dropout Voltage (defined as the minimum input/output voltage difference) :
(1) Output 1 Dropout Voltage : 1.25V (at 500mA)
(2) Output 2 Dropout Voltage : 1.2V (at 300mA)

• Stable with 10uF Output Capacitor(at VOUT1)

• No Protection Diodes Needed

• Built in Thermal Protection

• Built in Current Limit Protection

• Fast transient Response

• Short Setting Time

 

Applications:

1. Desktop Computer

2. Networking Systems

3. Optical Data Storage Systems

 

Other data sheets are available within the file: APL-5521

 

APL5521 Datasheet PDF Download

Part Number: LR8

Function: High Input Voltage, Adjustable 3-Terminal Linear Regulator

Package: TO-92, TO-252, SOT-89 Type

Manufacturer: Supertex Inc

Image and Pinouts:

 

Description

The Supertex LR8 is a high voltage, low output current, adjustable linear regulator. It has a wide operating input voltage range of 13.2- 450V. The output voltage can be adjusted from 1.20- 440V provided that the input voltage is at least 12V greater than the output voltage.

The output voltage can be adjusted by means of two external resistors R1 and R2 as shown in the typical application circuits. The LR8 regulates the voltage difference between VOUT and ADJ pins to a nominal value of 1.20V. The 1.20V is amplified by the external resistor ratio R1 and R2. An internal constant bias current of typically 10µA is connected to the ADJ pin. This increases V OUT by a constant voltage of 10µA times R2.

Features

1. 12V to 450V input voltage range
2. Adjustable 1.20V to 440V output regulation
3. 5% output voltage tolerance
4. Output current limiting
5. 10μA typical ADJ current
6. Internal junction temperature limiting

Applications:

1. Off-line SMPS startup circuits
2. Adjustable high voltage constant current source
3. Industrial Controls
4. Motor controls
5. Battery chargers

 

LR8 Datasheet PDF Download

Other data sheets are available within the file: LR8K4, LR8K4-G, LR8N3-G, LR8N8