Part Number: uP7704, uP7704U8, uP7704ADDA

Function: 2A Ultra Low Dropout Linear Regulator

Package: PSOP-8, WDFN3x3-10L Type

Manufacturer: uPI Semiconductor

Images:

Description

The uP7704 is a 2A ultra low dropout linear regulator specifically designed for motherboard, notebook and graphic card applications. This device works with dual supplies, a control input for the control circuitry and a power input as low as 1.2V for providing current to output. The uP7704
delivers high-current and ultra-low-drop output voltage as low as 0.8V for applications where VOUT is very close to VIN.

Features

1. Works with 1.2V~5.5V VIN

(1) Adjustable Output Voltage, Down to 0.8V

(2) 1.5% Initial Accuracy

(3) Excellent Line and Load Regulation

2. 2A Guaranteed Output Current

(1) 300mV @ 2A Dropout Voltage

3. Very Low On-Resistance : 150mΩ typical

4. VOUT Pull Low Resistance when Disabled

5. VOUT Power OK Signal

6. Fast Transient Response

Block Diagram:

Applications:

1. Desktop PCs, Notebooks, and Workstations

2. Graphic Cards

3. Low Voltage Logic Supplies

4. Microprocessor and Chipset Supplies

5. Split Plane Microprocessor Supplies

6. Advanced Graphics Cards Supplies

7. SoundCards and Auxiliary Power Supplies

uP7704 PDF Datasheet

A synchronous step-down regulator, also known as a synchronous buck regulator, is a type of DC-DC (direct current to direct current) voltage converter used to efficiently reduce the input voltage to a lower, regulated output voltage. These regulators are widely used in various electronic devices and power management applications where power efficiency and precise voltage regulation are essential.

Part Number: SY8120B1

Function: 2A, 18V Input, Synchronous Step Down Regulator

Package: SOT23-6 Type

Manufacturer: Silergy

Images:

Description

The SY8120B1 develops high efficiency synchronous stepdown DC-DC converter capable of delivering 2A load current . SY8120B1 operates over a wide input voltage range from 4.5V to 18V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. SY8120B1 adopts the instant PWM architecture to achieve fast transient responses for high step down applications and high efficiency at light loads. In addition, it operates at pseudo-constant frequency of 500 kHz under heavy load conditions to minimize the size of inductor and capacitor.

Features

• Low RDS(ON) for internal switches (top/bottom):130/120 mΩ

• 4.5-18V input voltage range

• 2A load current capability

• Instant PWM architecture to achieve fast transient responses Internal softstart limits the inrush current

• 2% 0.6V reference

• Cycle-by-cycle peak current limitation

• RoHS Compliant and Halogen Free

Pinouts:

 

Applications:

• Portable TV

• Access Point Router

• DSL Modem

• LCD TV

• CCTV

• IP CAM

• Networking

SY8120B1 PDF Datasheet