DATASHEET and Circuit Diagram

This datasheet contains information related to L9407F Voltage Regulator from STMicroelectronics which is a monolithic multifunction device intended for use in automotive application. You may see the L9407F application schematic diagram below.

The L9407F Car Alternator Voltage Regulator features Low side field driver, Thermal protection, Field short circuit protection, Protected diagnostic lamp driver, Protected high side relay driver, Complex diagnostics, Load response control, and Fully monolithic design, according to the datasheet.

L9407F Car Alternator Voltage Regulator Datasheet continued »

LM2700 step-up PWM DC/DC converter is an ideal part for biasing LCD displays. It features internal switch, pin selectable frequency for easy filtering and low noise, over temperature protection circuit and adjustable output voltage up to 17.5V. It used to be applied on applications such as handheld, GSM/CDMA Phones, digital cameras and portable applications.

Find sections such the typical application circuit, 14-Lead TSSOP or LLP package connection diagram, pin description, operation circuit example of LM2700 (continuous conduction mode, setting the output voltage, DC gain and Loop gain, inductor and diode selection, input and output capcitor selection, and etc), and the application circuit information related to the operation functions in the datasheet.

LM2700 Step-Up PWM DC/DC Converter Datasheet continued »

In order to provide an output that is proportional to the power supply voltage, ratiometric output configuration is needed. The MAX1452 Basic Ratiometric Output Configuration Circuit appears in the schematic below, it provides ratiometric output with a minimum number of external components.

This output, then can be applied to a ratiometric ADC to produce a digital value independent of supply voltage. According to the MAX1452 datasheet, ratiometricity is a key point in applications such as battery operated instruments, automotive, and some industrial applications.

MAX1452 Ratiometric Output Configuration Circuit and Datasheet continued »

This Linear LT1107 DC/DC Converter used to be applied in palmtop computers, LCD Bias Generators, Battery Back-Up Supplies, Cell phones, and many portable instruments. If you need the datasheet of the LT1107, and herein is the following information you need.

In the LT1107 datasheet you will find the pin functions, operation description of the device, applications in such Inductor Selection – Step-Up Converter, Inductor Selection – Step-Down Converter, Inductor Selection – Positive-to-Negative Converter, Step-Up/Step-Down (Boost/Buck Mode) Operation, Inverting Configurations, Using the ILIM Pin, and how to use the Gain Block of LT1107.

Linear LT1107 DC/DC Converter Datasheet continued »

The ADM660 is a charge-pump voltage converter that can be used to either invert the input supply voltage or double it. The schematic below appears ADM660 Voltage Inverter Circuit Configuration Diagram.

This inverting schematic is ideal for generating a negative rail in single power supply systems. In order to optimize capacitor size and quiescent current, there is a Frequency Control (FC) input pin instead of the external oscillator (OSC) pin, according to the datasheet.

ADM660 Charge Pump Voltage Inverter Circuit Configuration and Datasheet continued »

The article herein describes information on how voltage controlled oscillator (VCO) buffer may isolate oscillator circuit’s output problems. The VCO buffers which being used are MAX2472/2473 from Maxim Semiconductor. It discussed issues related to VCO circuits such as load pulling, supply pushing, phase noise and effects of radiated energy from nearby power amplifiers (PAs).

You will be taken into discussion on introducing a buffer amplifier between two isolated circuit stages, typical VCO characteristics and how isolation problems can degrade circuit performance, A Typical BJT Based Colpitts VCO, MAX2472 isolation circuit between VCO and mixer, and more.

How to Use VCO buffer for Isolating Oscillator Circuit’s Output continued »