Part Number: AAT1171

Function: Voltage-Scaling Step-Down Converter

Package: TDFN33-12 Pin Type

Manufacturer: AAT

Images:

Description

The AAT1171 SwitchReg, a member of AnalogicTech’s Total Power Management IC™ (TPMIC™) product family, has been specifically designed to dynamically control the operating voltage of a WCDMA or CDMA power amplifier inside single lithium-ion battery-powered systems. The AAT1171 outputs a voltage between 0.6V and 3.6V, thereby optimizing the amplifier efficiency at both low and high transmit levels.

Features

• VIN Range: 2.7V to 5.5V

• Variable Output Voltage: 0.6V to 3.6V

• 600mA Output Current

• DAC Input: 0.2V to 1.2V

• High Output Accuracy: ±3%

• 45µA No Load Quiescent Current

• Internal Soft Start Limits Startup Current and Output Voltage Overshoot

• Synchronizable to External 19.8MHz System Clock

• Over-Temperature and Current Limit Protection

• Integrated 85mΩ Bypass MOSFET

• 2MHz Operation

• PWM/LL Control with Override

Pinouts:

 

Applications:

• WCDMA or CDMA PA in Cellular Phones, Smartphones, Feature Phones, etc.

• Express Card

• PCMCIA Data Cards

AAT1171 PDF Datasheet

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A step-down converter, also known as a buck converter or buck regulator, is a type of power electronics circuit used to convert a higher voltage level to a lower voltage level. It is commonly used in electronics and power supply applications to efficiently reduce voltage levels while maintaining good voltage regulation.

The Part Number is BM1410A.

The function of this semiconductor is 2.2A Step-Down Converter.

The package is SOP 8 Pin type

The manufacturer of this part is bookly Micro Electronic ( bookly.com ).

See the preview image and the PDF file for more information.

Description

The BM1410A is a current-mode step-down DC-DC converter that generates up to 2.2A output current at 380kHz switching frequency. The device utilizes advanced BCD process for operation with input voltage up to +23V consuming only 15μA in shutdown mode, the BM1410A is highly efficient with peak efficiency at 92% when in operation. Protection features include cycle-by-cycle current limit, thermal shutdown, and frequency fold back at short circuit.

Features

1. 2.2A Output Current

2. Efficiency up to 92% @+5V output

3. +5V to +23V Input Range

4. 5μA Shutdown Supply Current

5. 380kHz Switching Frequency

6. Adjustable Output Voltage from 1.23V to 0.85*VIN

7. cycle-by-Cycle Current Limit Protection

8. Thermal Shutdown Protection

9. Frequency Fold Back at Short Circuit

10. Stability with Wide Range of Capacitors

Pinouts:

Applications

1. TFT LCD Monitors

2. Portable DVDs

3. NET CARD

4. Telecom Power Supplies

5. DSL and Cable Modems and Routers

6. LCD TV

 

BM1410A PDF Datasheet