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Part Name(s) : HA17451FP HA17451P Hitachi
Hitachi -> Renesas Electronics
Description : PWM Control Dual Switching Regulator IC View

PWM Control Dual Switching Regulator IC


Part Name(s) : MIC2184 MIC2184BM MIC2184BQS MIC2184YM MIC2184YQS Micrel
Micrel
Description : Low Voltage Buck PWM Control IC View

General Description

MICrel’s MIC2184 is a high effICiency PWM buck Control IC. With its wide input voltage range of 2.9V to 14V, the MIC2184 can be used to effICiently step voltages down in 1- or 2-cell LiIon battery Powered applICations, as well as in fixed 3.3V, 5V, or 12V systems.

EffICiencies over 90% are achievable over a wide range of load conditions with the MIC2184’s PWM Control scheme. The operating frequency can be divided by two by raising the FREQ/2 pin to VDD. This alLows the user to optimize effICiency versus board space. It also alLows the MIC2184 to be externally synchronized to frequencies beLow its nominal 400KHz.



Features

• Input voltage range: 2.9V to 14V

• >90% effICiency

• Oscillator frequency of 400kHz

• Frequency divide-by-two pin

• Frequency sync to 600kHz

• FrequOut oscillator output alLows simple charge pump implementation in Low voltage systems

• 1.245V reference output

• Front edge blanking

• 5Ω output driver

• Soft start

PWM current mode Control

• 1&mICro;A shutdown current

• Cycle-by-cycle current limiting

• Frequency foldback short circuit protection

• Adjustable under-voltage lockout

• 16 pin narrow-body SOIC and QSOP package options



ApplICations

• 3.3V to 2.5V/1.8V/1.5V conversion

• DC Power distribution systems

• Wireless Modems

• ADSL line cards

• 1-and 2-cell Li Ion battery operated equipment

• Satellite Phones



 


Part Name(s) : LB1946 SANYO
SANYO -> Panasonic
Description : MonolithIC Digital IC PWM Current Control Stepping Motor Driver View

Overview

The LB1946 is stepping motor drive IC that implements PWM current Control bipolar drive with a fixed off time. This IC features 15-current setting levels using a fixed VREF voltage and supports for mICrostepping drive from 1-2 phase excitation to 4W1-2 phase excitation drive. This devICe is optimal for driving stepping motors such as those used for carriage drive and paper feed in printers.



Features

PWM current Control with a fixed off time

• LogIC input serial-parallel converter (alLows 1-2, W1-2, 2W1-2, and 4W1-2 phase excitation drive)

• Current attenuation switching function (with sLow decay, fast decay, and mixed decay modes)

• Built-in upper and Lower side output diodes

• Simultaneous on state prevention function (through current prevention)

• Noise canceller function

• Thermal shutdown circuit

• Shutoff on Low logIC system voltage circuit

Low-Power mode Control pin



ApplICations

PWM current Control stepping motor drivers



 


Part Name(s) : FA3641 FA3641N FA3641P FA3647 FA3647N FA3647P Fuji
Fuji Electric
Description : PWM Control IC with light load Power saving function For Switching Power Supply Control View

The FA3641P(N) and FA3647P(N) are the PWM type switching Power supply Control ICs that can directly drive Power MOSFET. These ICs use a CMOS devICe with high dielectrIC strength (30V) to implement Low Power consumption. They feature a number of functions that are equivalent to those of the FA531X series consisting of bipolar devICes.





Part Name(s) : NJW4303 NJW4303V JRC
Japan Radio Corporation
Description : Hall Element-PWM Type 3-Phase Motor Control IC View

■ GENERAL DESCRIPTION

The NJW4303 is a 3-Phase Brushless DC Motor Control pre-driver IC with PWM Control. It generates the most optimal current fLow patterns by receiving rotor magnetIC pole detection signals from hall elements of 3-phase brushless motor.



■ FEATURE

▪ Supply Voltage : 9.0V ~ 35V

PWM Pre Driver : Upper = Pch / Lower = Nch

PWM Control Circuit

▪ Forward / Reverse Detection : Changeable while Roating

PWM Oscillation Circuit : Setting by External Capacitor

▪ Protection Circuit : ILimit, UVLO, TSD, LD

▪ Soft Start Function

▪ Short Brake Function

▪ ON/OFF Function : Stop with S/S Pin

▪ 120º / 60º Phase Difference Change Function

▪ Multi FG Output : 2 bit Input Change Type

Controllable Dead Time Settings

▪ Package : SSOP-32



 


Part Name(s) : M62501FP M62501P Mitsumi
Mitsumi
Description : PWM IC for the synchronized deflection system Control View

GENERAL DESCRIPTION

The M62501P/FP is a Controller for a deflection system of CRT display monitors. It performs a stable PWM Control over a wide fluctuation of external signals, thanks to the built-in trigger mode oscillator. The IC is suitable for an applICation to a high voltage drive of monitors because of its folLowing circuits and functions;



Low voltage malfunction protection circuit,

•over or under voltage protection circuit for a Control line,

•soft-start function.

It is also applICable to a horizontal output correction.



FEATURES

PWM output synchronized with external signals

•Wide pulse width modulation Control frequency 15kHz to 150kHz

•Soft start function

•The under voltage output malfunction protection circuit start Vcc > 9V stop Vcc < 6V

•Built-in over voltage protection (OVP) and under voltage protection (UVP) Control



APPLICATION

•CRT display monitor


Part Name(s) : LB1847 SANYO
SANYO -> Panasonic
Description : MonolithIC Digital IC PWM Current Control Type Stepping Motor Driver View

Overview

The LB1847 is a driver IC for stepping motors with PWM current Control bipolar drive (fixed OFF time). A special feature of this IC is that VREF voltageis constant while the current can be set in 15 steps, alLowing drive of motors ranging from 1-2 phase exciter types to 4W 1-2 phase exciter types. The current decay pattern can alsobe selected (SLow DECAY, FAST DECAY, MIX DECAY) to increase the decay of regenerative current at chopping OFF,thereby improving response

characteristICs. This is especially usefulfor carriage and paper feed stepping motors in printers and similar applICations where high-precision Control and Low vibrations are required.



Features

PWM current Control (fixed OFF time)

•Load current digital selector (1-2, W1-2, 2W1-2, 4W1-2 phase exciter drive possible)

•Selectable current decay pattern (SLow DECAY, FAST DECAY, MIX DECAY)

•Simultaneous ON prevention function (feed-through current prevention)

•Noise canceler

•Built-in thermal shutdown circuit

•Built-in logIC Low-voltage OFF circuit


Part Name(s) : M62501FP M62501P Renesas
Renesas Electronics
Description : PWM IC for the Synchronized Deflection System Control View

General Description

The M62501P/FP is a Controller for a deflection system of CRT display monitors. It performs a stable PWM Control over a wide fluctuation of external signals, thanks to the built-in trigger mode oscillator. The IC is suitable for an applICation to a high voltage drive of monitors because of its folLowing circuits and functions;



•  Low voltage malfunction protection circuit,

•  over or under voltage protection circuit for a Control line,

•  soft-start function.

It is also applICable to a horizontal output correction.



Features

•  PWM output synchronized with external signals

•  Wide pulse width modulation Control frequency 15 kHz to 150 kHz

•  Soft start function

•  The under voltage output malfunction protection circuit

   start VCC >9 V

   stop VCC <6 V

•  Built-in over voltage protection (OVP) and under voltage protection (UVP) Control



ApplICation

CRT display monitor


Part Name(s) : U6084B U6084B-FP Temic
Temic Semiconductors
Description : PWM Power Control with AutomatIC Duty Cycle Reduction View

Description

The U6084B is a bipolar technology PWM-IC designed for the Control of an N-channel Power MOSFET used as a high-side switch. The IC is ideal for use in the brightness Control (dimming) of lamps such as, in dashboard applICations. For a constant brightness the preselected duty cycle can be reduced automatICally as a function of the supply voltage.



 


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