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Part Name(s) : R2S25400 R2S25400DS-E
ETC
Unspecified
Description : Multiple Voltage Regulator for Car Audio System

Description
The Regulator contains a triple voltage Regulator and a power switch. The IC includes a monitoring circuit to warn if a low voltage or no voltage condition is occuring. In stand-by output is active as long as possible even when in thermal shutdown or any other fault conditions.

Part Number : R2S25400, R2S25400DS-E
Package : ZIP 15 Pin Type
Manufacturers : Hitachi, Sony, Renesas
Function : Multiple Voltage Regulator for Car Audio System

Philips
Philips Electronics
Description : Multiple voltage Regulator with switch

GENERAL DESCRIPTION

The TDA3608 is a multiple output voltage Regulator with a power switch, intended for use in car radios with or without a microcontroller.



FEATURES

General

• Two VP-state controlled Regulators (Regulator 1 and Regulator 3) and a power switch

Regulator 2 and reset circuit operate during load dump and thermal shutdown

• Separate control pins for switching Regulator 1, Regulator 3 and power switch

• Supply voltage range from −18 to +50 V

• Low reverse current of Regulator 2

• Low quiescent current (when Regulator 1, Regulator 3 and power switch are switched off)

• Hold output circuit for Regulator 1 (only valid when Regulator 3 output voltage >1.3 V)

• Reset and hold outputs (open-collector outputs)

• Adjustable reset delay time

• High ripple rejection

• Backup capacitor connection to supply Regulator 2 and reset circuit up to 25 V.



Protections

• Reverse polarity safe (down to −18 V without high reverse current)

• Able to withstand voltages up to 18 V at the outputs (supply line may be short circuited)

• ESD protection on all pins

• Thermal protection

• Load dump protection

• Foldback current limit protection for Regulator 1, Regulator 2 and Regulator 3

• Delayed foldback current limit protection for power switch (at short-circuit); delay time fixed by reset delay capacitor

• All Regulator outputs and power switch are DC short-circuited safe to ground and VP.



 


Part Name(s) : TDA3618 TDA3618AJR
Philips
Philips Electronics
Description : Multiple voltage Regulator with switch and ignition buffers

GENERAL DESCRIPTION

The TDA3618AJR is a multiple output voltage Regulator with a power switch and ignition buffers, intended for use in car radios with or without a microcontroller. It contains:

• Two fixed voltage Regulators with foldback current protection (Regulators 1 and 3) and one fixed voltage Regulator (Regulator 2) intended to supply a microcontroller, that also operates during load dump and thermal shutdown

• A power switch with protection, operated by an enable input

• Reset and hold outputs that can be used to interface with the microcontroller; the reset signal can be used to wake up the microcontroller

• A supply pin that can withstand load dump pulses and negative supply voltages

Regulator 2, which is switched on at a backup voltage greater than 6.5 V and off when the output voltage of Regulator 2 drops below 1.9 V

• A provision for the use of a reserve supply capacitor that will hold enough energy for Regulator 2 (5 V continuous) to allow a microcontroller to prepare for loss of voltage

• An inverted ignition 1 input with open collector output stage

• An ignition 2 input Schmitt trigger with push-pull output stage.



FEATURES

General

• Extremely low noise behaviour and good stability with very small output capacitors

• Two VP-state controlled Regulators and a power switch

Regulator 2, reset and ignition buffer operate during load dump and thermal shutdown

• Separate control pins for switching Regulator 1, Regulator 3 and the power switch

• Supply voltage range from −18 to +50 V

• Low reverse current of Regulator 2

• Low quiescent current when Regulator 1, Regulator 3 and the power switch are switched off

• Hold output for low VP

• Hold output for Regulators 1 and 3

• Hold output for foldback mode switch

• Hold output for load dump and temperature protection

• Reset (push-pull) and hold (open collector) outputs

• Adjustable reset delay time

• High ripple rejection

• Backup capacitor for Regulator 2

• Two independent ignition buffers, one inverted and with open collector output.



Protection

• Reverse polarity safe, down to −18 V

• Able to withstand voltages up to 18 V at the outputs

   (supply line may be short-circuited)

• ESD protected on all pins

• Thermal protections with hysteresis

• Load dump protection

• Foldback current limit protection for Regulators 1, 2 and 3

• Delayed second current limit protection for the power switch at short-circuit

• The Regulator outputs and the power switch are DC short-circuit safe to ground and VP.



 


Philips
Philips Electronics
Description : Multiple voltage Regulator with switch

GENERAL DESCRIPTION

The TDA3605Q is a multiple output voltage Regulator with a power switch, intended for use in car radios with or without a microcontroller.



FEATURES

• Two VP-state controlled Regulators (Regulator 1 and Regulator 3) and a power switch

Regulator 2, reset and ignition buffer operates during load dump and thermal shutdown

• Separate control pins for switching Regulator 1, Regulator 3 and the power switch

• Supply voltage range of −18 to +50 V (operating from 11 V)

• Low reverse current of Regulator 2

• Low quiescent current (when Regulator 1, Regulator 3, and power switch are switched off)

• Hold output (only valid when Regulator 1 is switched on)

• Reset and hold outputs (open collector outputs)

• Adjustable reset delay time

• High ripple rejection

• Back-up capacitor for Regulator 2.



PROTECTIONS

• Reverse polarity safe (down to −18 V without high reverse current)

• Able to withstand voltages up to 18 V at the outputs (supply line may be short-circuited)

• ESD protected on all pins

• Thermal protection

• Local thermal protection for power switch

• Load dump protection

• Foldback current limit protection for Regulators 1, 2 and 3

• Delayed second current limit protection for the power switch (at short-circuit)

• The Regulator outputs and the power switch are DC short-circuited safe to ground and VP.



 


Part Name(s) : TDA3618JR TDA3618JR/N1
Philips
Philips Electronics
Description : Multiple voltage Regulator with switch and ignition buffers

GENERAL DESCRIPTION

The TDA3618JR is a multiple output voltage Regulator with a power switch and ignition buffers, intended for use in car radios with or without a microcontroller. It contains:

• Two fixed voltage Regulators with a foldback current protection (Regulators 1 and 3) and one fixed voltage Regulator (Regulator 2), intended to supply a microcontroller, which also operates during load dump and thermal shutdown

• A power switch with protections, operated by an enable input

• Reset and hold outputs that can be used to interface with the microcontroller. The reset signal can be used to call up the microcontroller.

• A supply pin which can withstand load dump pulses and negative supply voltages

Regulator 2, which is switched on at a backup voltage greater than 6.5 V and off when the output voltage of Regulator 2 drops below 1.9 V

• A provision for the use of a reserve supply capacitor that will hold enough energy for Regulator 2 (5 V continuous) to allow a microcontroller to prepare for loss of voltage

• An inverted ignition 1 input with open collector output stage

• An ignition 2 input Schmitt trigger with push-pull output stage.



FEATURES

General

• Extremely low noise behaviour and good stability with very small output capacitors

• Two VP-state controlled Regulators (Regulators 1 and 3) and a power switch

Regulator 2, reset and ignition buffer operate during load dump and thermal shutdown

• Separate control pins for switching Regulators (Regulators 1 and 3) and the power switch

• Supply voltage range of −18 to +50 V

• Low reverse current of Regulator 2

• Low quiescent current (when Regulator 1, Regulator 3 and power switch are switched off)

• Hold output for low VP (Regulators 1 and 3 off)

• Hold output for Regulators 1 and 3

• Hold output for foldback mode switch

• Hold output for load dump and temperature protection

• Reset and hold outputs (open collector outputs)

• Adjustable reset delay time

• High ripple rejection

• backup capacitor for Regulator 2

• Two independent ignition buffers (one inverted and with open collector output).



Protections

• Reverse polarity safe (down to −18 V without high reverse current)

• Able to withstand voltages up to 18 V at the outputs

   (supply line may be short circuited)

• ESD protected on all pins

• Thermal protections with hysteresis

• Load dump protection

• Foldback current limit protection for Regulators 1, 2 and 3

• Delayed second current limit protection for the power switch (at short circuit)

• The Regulator outputs and the power switch are DC short circuited safe to ground and VP.



 


Linear
Linear Technology
Description : 550kHz Synchronous Switching Regulator Controller Plus Linear Regulator Controller

DESCRIPTION
The LTC®1704/LTC1704B include a high power synchronous switching Regulator controller plus a linear Regulator controller. The switching Regulator controller is designed to drive a pair of N-channel MOSFETs in a voltage mode, synchronous buck configuration to provide the main supply. The constant frequency, true PWM architecture switches at 550kHz, minimizing external component size, cost and optimizing load transient performance. The LTC1704 features automatic transition to power saving Burst Mode operation at light loads. The LTC1704B does not shift into Burst Mode operation at light loads, eliminating low frequency output ripple at the expense of light load efficiency. The linear Regulator controller is designed to drive an external NPN power transistor to provide up to 2A of current to an auxiliary load.

FEATURES
■ Dual Regulated Outputs: One Switching Regulator and One Linear Regulator
■ Excellent DC Accuracy: ±1.5% for Switcher and ±2% for Linear Regulator
■ External N-Channel MOSFET Architecture
■ No External Current Sense Resistor Required
■ Burst Mode® Operation at Light Load (LTC1704)
■ Continuous Switching at Light Load (LTC1704B)
■ Linear Regulator with Programmable Current Limit
■ Linear Regulator with Programmable Start-Up Delay
■ Low Shutdown Current: <150µA
■ High Efficiency Over Wide Load Current Range
■ PGOOD Flag Monitors Both Outputs
■ Small 16-Pin Narrow SSOP Package

APPLICATIONS
■ Multiple Logic Supply Generator
■ Distributed Power Applications
■ High Efficiency Power Conversion

Description : EXTERNAL TRANSISTOR Type CMOS VOLTAGE Regulator

[ABLIC Inc.]

EXTERNAL TRANSISTOR Type CMOS VOLTAGE Regulator

The S-816 Series, developed using the CMOS technology, is an external transistor Type positive voltage Regulator which incorporates an overcurrent protection circuit and an ON/OFF circuit. A low drop-out Type Regulator with an output current ranging from several hundreds of mA to 1 A can be configured with the PNP transistor driven by this IC.
Despite the features of the S-816 Series, which is low current consumption, the improvement in its transient response characteristics of the IC with a newly deviced phase compensation circuit made it possible to employ the products of the S-816 Series even in applications where heavy input variation or load variation is experienced.
The S-816 Series Regulator serves as an ideal power supply unit for portable devices when coupled with the small SOT-23-5 package, providing numerous outstanding features, including low current consumption. Since the S-816 Series can accommodate an input voltage of up to 16 V, it is also suitable when operating via an AC adapter. 

Features
● Output voltage: 2.5 V to 6.0 V, selectable in 0.1 V step
● Input voltage: 16 V max.
● Output voltage accuracy:  2.0%
● Current consumption: During operation: 30 μA typ., 40 μA max.
                                       During power-off: 1 μA max.
● Built-in overcurrent (base current) protection circuit
● Built-in ON/OFF circuit: Ensures long battery life.
● Built-in current source (10 μA): No need for a base-emitter resistance.
● Operation temperature range: Ta = -40°C to +85°C
● Lead-free, Sn 100%, halogen-free*1
*1. Refer to “■ Product Name Structure” for details.

Applications
● Power supply for on-board such as battery device for portable telephone, electronic notebook, PDA
● Constant voltage power supply for camera, video equipment and portable communication equipment
● Power supply for CPU
● Post-Regulator for switching Regulator
● Main Regulator in multiple-power supply system

Part Name(s) : A4406 A4406KLPTR-T
Allegro
Allegro MicroSystems
Description : Constant On-Time Buck Regulator With One External and One Internal Linear Regulator

Description

The A4406 is an automotive power management IC that uses a high frequency constant on-time 5.45 V pre-Regulator to supply an internal 5 V linear Regulator and a 3.3 V linear DMOS driver. Designed to supply CAN and microprocessor power supplies in high temperature environments, the A4406 is ideal for under hood applications. Efficient operation is achieved by using a buck pre-Regulator to efficiently drop the input voltage before supplying the linear Regulators; this reduces power dissipation and increases overall Regulator efficiency.



Features and Benefits

• AEC Q100 Grade 0 qualified

• Internal buck pre-Regulator followed by LDO outputs

• 5.5 to 36 V VIN operating range (50 V maximum);

for start/stop, cold crank, and load dump requirements

• 2.2 MHz constant on-time buck Regulator

• 50 V absolute maximum input voltage for surges

• Valley current sensing achieves shortest buck on-times

• 5.5 to 46 V input voltage range

• −40ºC to 150ºC junction temperature range

• Power-on reset (NPOR pin) with adjustable rising delay

• 5 V (V5P pin) internal low dropout tracking linear Regulator with both overcurrent foldback and short-to-battery protection

• 3.3 V (V33 pin) external linear Regulator DMOS driver overcurrent foldback protection

• Logic enable input (ENB pin)

• Ignition enable input (ENBAT pin)

• Ignition status indicator (ENBATS pin)

• Buck pulse-by-pulse overcurrent protection

• Buck LX short circuit protection (latched)

• Missing asynchronous diode protection (latched)

• Switcher (VREG pin), 3.3 V (V33 pin), and charge pump (VCP pin) undervoltage lockout protection (UVLO)

• Thermal shutdown protection (TSD)



Applications:

Automotive Control Modules, such as:

• Electronic power steering (EPS)

• Transmission control (TCU)

• Antilock braking (ABS)

• Emissions control


Description : 500 mA Synchronous Buck Regulator,+ 300 mA LDO

Description
The TC1313 combines a 500 mA synchronous buck Regulator and 300 mA Low-Dropout Regulator (LDO) to provide a highly integrated solution for devices that require multiple supply voltages. The unique combination of an integrated buck switching Regulator and low dropout linear Regulator provides the lowest system cost for dual-output voltage applications that require one lower processor core voltage and one higher bias voltage.

Features
• Dual-Output Regulator (500 mA Buck Regulator and 300 mA Low-Dropout Regulator (LDO))
• Total Device Quiescent Current = 57 µA (Typ.)
• Independent Shutdown for Buck and LDO Outputs
• Both Outputs Internally Compensated
• Synchronous Buck Regulator:
- Over 90% Typical Efficiency
- 2.0 MHz Fixed-Frequency PWM (Heavy Load)
- Low Output Noise
- Automatic PWM-to-PFM mode transition
- Adjustable (0.8V to 4.5V) and Standard Fixed-Output Voltages (0.8V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V)
• Low-Dropout Regulator:
- Low-Dropout Voltage = 137 mV Typ. @ 200 mA
- Standard Fixed-Output Voltages (1.5V, 1.8V, 2.5V, 3.3V)
• Small 10-pin 3X3 DFN or MSOP Package Options
• Operating Junction Temperature Range:
- -40°C to +125°C
• Undervoltage Lockout (UVLO)
• Output Short Circuit Protection
• Overtemperature Protection

Applications
• Cellular Phones
• Portable Computers
• USB-Powered Devices
• Handheld Medical Instruments
• Organizers and PDAs

Part Name(s) : A4407 A4407KLPTR-T
Allegro
Allegro MicroSystems
Description : 2.2 MHz Constant On-Time Buck Regulator With Two External and Two Internal Linear Regulators

Description

The A4407 is an automotive power management IC that uses a 2.2 MHz constant on-time (COT) buck pre-Regulator to supply a 5 V linear Regulator, a 5 V tracking/protected linear Regulator, a 3.3 V linear FET controller/driver, and a 1.2 V/1.5 V/1.8 V linear FET controller/driver. The A4407 provides a pin to set the master reference for the 5 V tracking Regulator to either the 3.3 V or the 5 V output. The on-time of the buck is internally adjusted as a function of VINto maintain the 2.2 MHz switching frequency. Efficient operation is achieved by using the buck pre-Regulator to drop the input voltage before supplying the linear Regulators. Designed to supply CAN and microprocessor power supplies in high temperature environments, the A4407 is ideal for under hood applications.



Features and Benefits

• AEC Q100 Grade 0 qualified

• Internal buck pre-Regulator followed by LDO outputs

• 5.5 to 36 V V

IN operating range (50 V maximum);

for start/stop, cold crank, and load dump requirements

• Constant on-time (COT) buck pre-Regulator

• Valley current sensing achieves shortest buck on-times

• 2.2 MHz (VIN- adjusted) switching frequency

• 5 V internal low-dropout tracking linear Regulator with

foldback short circuit and short-to-battery protections

• 5 V internal low-dropout linear Regulator with foldback

short circuit protection

• 3.3 V external FET controller/driver with programmable

current limit and foldback short circuit protection

• 1.2 V/1.5 V/1.8 V external FET controller/driver with

programmable current limit and foldback protection

• Power-on reset (NPOR) with adjustable rising delay

• Logic enable input (ENB) for microprocessor control

• Ignition enable input (ENBAT) for remote startup

• Ignition status indicator (ENBATS) output

• Buck pulse-by-pulse overcurrent protection

• Buck LX short circuit protection (latched)

• Missing asynchronous diode protection (latched)

• UVLO for VIN, charge pump, and the internal rail

• Thermal shutdown protection

• −40ºC to 150ºC junction temperature range


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