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L49

  

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L49A [Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988) ]

other parts : 2987AIM5.0  2987IM3.0  2987IM3.3  2987IM5.0  2988AIM3.3  2988AIM5.0  2988IM5.0  L007A  L008AB  L009A 

TI
Texas Instruments

DESCRIPTION
The LP2987/8 are fixed-output 200 mA precision LDO voltage regulators with power-ON reset delay which can be implemented using a single external capacitor.
The LP2988 is specifically designed for noise-critical applications. A single external capacitor connected to the Bypass pin reduces regulator output noise.

FEATURES
• Ultra Low Dropout Voltage
• Power-ON Reset Delay Requires Only One
   Component
• Bypass Pin for Reduced Output Noise
   (LP2988)
• Specified Continuous Output Current 200 mA
• Specified Peak Output Current > 250 mA
• SOIC-8 and VSSOP-8 Surface Mount Packages
• <2 μA Quiescent Current when Shutdown
• Low Ground Pin Current at All Loads
• 0.5% Output Voltage Accuracy (“A” Grade)
• Wide Supply Voltage Range (16V Max)
• Overtemperature/overcurrent Protection
• −40°C to +125°C Junction Temperature Range

APPLICATIONS
• Cellular Phone
• Palmtop/Laptop Computer
• Camcorder, Personal Stereo, Camera

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L49A [Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988) ]

other parts : 2987AIM5.0  2987IM3.0  2987IM3.3  2987IM5.0  2988AIM3.3  2988AIM5.0  2988IM5.0  L007A  L008AB  L009A 

Texas-Instruments
Texas Instruments

DESCRIPTION
The LP2987/8 are fixed-output 200 mA precision LDO voltage regulators with power-ON reset delay which can be implemented using a single external capacitor.
The LP2988 is specifically designed for noise-critical applications. A single external capacitor connected to the Bypass pin reduces regulator output noise.

FEATURES
• Ultra Low Dropout Voltage
• Power-ON Reset Delay Requires Only One
   Component
• Bypass Pin for Reduced Output Noise
   (LP2988)
• Specified Continuous Output Current 200 mA
• Specified Peak Output Current > 250 mA
• SOIC-8 and VSSOP-8 Surface Mount Packages
• <2 μA Quiescent Current when Shutdown
• Low Ground Pin Current at All Loads
• 0.5% Output Voltage Accuracy (“A” Grade)
• Wide Supply Voltage Range (16V Max)
• Overtemperature/overcurrent Protection
• −40°C to +125°C Junction Temperature Range

APPLICATIONS
• Cellular Phone
• Palmtop/Laptop Computer
• Camcorder, Personal Stereo, Camera

View
L49B [Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988) ]

other parts : 2987AIM5.0  2987IM3.0  2987IM3.3  2987IM5.0  2988AIM3.3  2988AIM5.0  2988IM5.0  L007A  L008AB  L009A 

TI
Texas Instruments

DESCRIPTION
The LP2987/8 are fixed-output 200 mA precision LDO voltage regulators with power-ON reset delay which can be implemented using a single external capacitor.
The LP2988 is specifically designed for noise-critical applications. A single external capacitor connected to the Bypass pin reduces regulator output noise.

FEATURES
• Ultra Low Dropout Voltage
• Power-ON Reset Delay Requires Only One
   Component
• Bypass Pin for Reduced Output Noise
   (LP2988)
• Specified Continuous Output Current 200 mA
• Specified Peak Output Current > 250 mA
• SOIC-8 and VSSOP-8 Surface Mount Packages
• <2 μA Quiescent Current when Shutdown
• Low Ground Pin Current at All Loads
• 0.5% Output Voltage Accuracy (“A” Grade)
• Wide Supply Voltage Range (16V Max)
• Overtemperature/overcurrent Protection
• −40°C to +125°C Junction Temperature Range

APPLICATIONS
• Cellular Phone
• Palmtop/Laptop Computer
• Camcorder, Personal Stereo, Camera

View
L49B [Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988) ]

other parts : 2987AIM5.0  2987IM3.0  2987IM3.3  2987IM5.0  2988AIM3.3  2988AIM5.0  2988IM5.0  L007A  L008AB  L009A 

Texas-Instruments
Texas Instruments

DESCRIPTION
The LP2987/8 are fixed-output 200 mA precision LDO voltage regulators with power-ON reset delay which can be implemented using a single external capacitor.
The LP2988 is specifically designed for noise-critical applications. A single external capacitor connected to the Bypass pin reduces regulator output noise.

FEATURES
• Ultra Low Dropout Voltage
• Power-ON Reset Delay Requires Only One
   Component
• Bypass Pin for Reduced Output Noise
   (LP2988)
• Specified Continuous Output Current 200 mA
• Specified Peak Output Current > 250 mA
• SOIC-8 and VSSOP-8 Surface Mount Packages
• <2 μA Quiescent Current when Shutdown
• Low Ground Pin Current at All Loads
• 0.5% Output Voltage Accuracy (“A” Grade)
• Wide Supply Voltage Range (16V Max)
• Overtemperature/overcurrent Protection
• −40°C to +125°C Junction Temperature Range

APPLICATIONS
• Cellular Phone
• Palmtop/Laptop Computer
• Camcorder, Personal Stereo, Camera

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L497 [HALL EFFECT PICKUP IGNITION CONTROLLER ]

other parts : L497B  L497D1 

ST-Microelectronics
STMicroelectronics

DESCRIPTION
The L497is an integrated electronic ignition controller for breakerless ignition systems using Hall effect sensors.
The device drives an NPN external darlington to control the coil current providing the required stored energy with low dissipation.
A special feature of the L497 is the programmable time for the recovery of the correct dwell ratio Td/T when the coil peak current fails to reach 94 % of the nominal value. In this way only one spark may have an energy less than 94 % of the nominal one during fast acceleration or cold starts.

■ DIRECT DRIVING OF THE EXTERNAL POWER DARLINGTON
■ COIL CURRENT CHARGING ANGLE (dwell) CONTROL
■ PROGRAMMECOIL CURRENT PEAKLIMITATION
■ PROGRAMMABLE DWELL RECOVERY TIME WHEN 94 % NOMINAL CURRENT NOT REACHED
■ RPM OUTPUT
■ PERMANENT CONDUCTION PROTECTION
■ OVERVOLTAGE PROTECTION FOR EXTERNAL DARLINGTON
■ INTERNAL SUPPLY ZENER
■ REVERSE BATTERY PROTECTION

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L4943 [MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO ] ST-Microelectronics
STMicroelectronics

DESCRIPTION
The L4943 contains a triple voltage regulator and a high side driver. In stand-by the output is active as long as possible even when in thermal shutdown or under any other fault conditions. The STCAP pin allows the use of a reserve supply capacitor that will hold enough energy for the 5V Stand-by line to allow the µP to store data.

■ 3 PROGRAMMABLE OUTPUTS:
   ♦ 3 TO 11V (500mA);
   ♦ 3 TO 11V (500mA);
   ♦ 3 TO 7V (500mA) STANDBY
■ OUT1 AND OUT2 WITH INDEPENDENT ENABLE CONTROL FOR STAND-BY MODE
■ 0.4A HIGH SIDE DRIVER
■ LOAD DUMP PROTECTION
■ THERMAL SHUTDOWN

 

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L4945 [5V VERY LOW DROP VOLTAGE REGULATOR ] ST-Microelectronics
STMicroelectronics

DESCRIPTION
The L4945 is a monolithic integrated circuit in Versawatt package specially designed to provide a stabilized supply voltage for automotive and in dustrial electronic systems. Thanks to their very low voltage drop, in automotive applications the devices can work correctly even during the cranking phase, when the battery voltage could fall as low as 6V. Furthermore, they incorporate a complete range of protection circuits against the dangerous overvoltages always present on the battery rail of the car.

■ 5V ± 4% PRECISE OUTPUT VOLTAGE OVER FULL TEMPERATURE RANGE (– 40 / 125 °C)
■ VERY LOW VOLTAGE DROP (0.75Vmax) OVER FULL TEMPERATURE RANGE
■ OUTPUT CURRENT UP TO 500mA
■ OVERVOLTAGE AND REVERSE VOLTAGE PROTECTIONS
■ REVERSE VOLTAGE PROTECTION
■ SHORT CIRCUIT PROTECTION AND THERMAL SHUT-DOWN (with hysteresis)
■ LOW START UP CURRENT

 

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L4946 [QUAD VOLTAGE REGULATOR WITH INHIBIT AND RESET ] ST-Microelectronics
STMicroelectronics

DESCRIPTION
The L4946 is a quad output low drop voltage regulator. The four outputs are a low drop 10V at 125mA (VO1), a 8V at 250mA (VO2), a 5V at 200mA (VO3) and a low drop 5V st-by line at 100mA (VO4).
The IC includes a monitoring circuit to warn if a low voltage or no voltage condition is occurring. VO1,2,3 are off during st-by mode.
The STCAP pin allows the battery voltage to decay slowly giving the µP time to store data. This IC is designed for supplying microcomputer controlled systems specially in automotive applications.

■ 4 OUTPUTS: 10V (125mA); 8V (250mA); 5V (200mA); 5V (100mA)
■ 10V AND 5V (100mA) OUTPUT ARE LOW DROP
■ 5V (100mA) ST-BY OUTPUT VOLTAGE
■ EARLY WARNING OUTPUT FOR SUPPLY UNDERVOLTAGE (LVW)
■ THERMAL SHUTDOWN AND CURRENT LIMITATION (FOLDBACK)
■ REVERSE BATTERY AND LOAD DUMP PROTECTION
■ INHIBIT (ON/OFF) AND RESET FUNCTIONS

 

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L4947 [5V-0.5A VERY LOW DROP REGULATOR WITH RESET ]

other parts : L4947R 

ST-Microelectronics
STMicroelectronics

DESCRIPTION
The L4947/L4947R is a monolithic integrated circuit in Pentawatt package specially designed to provide a stabilized supply voltage for automotive and industrial electronic systems. Thanks to its very low voltage drop, in automotive applications the L4947/L4947R can work correctly even during the cranking phase, when the battery voltage could fall as low as 6V. Furthermore, it incorporates a complete range of protection circuits against the dangerous overvoltages always present on the battery rail of the car. The reset function makes the device particularly suited to supply microprocessor based systems : a signal is available (after an externally programmable delay) to reset the microprocessor at power-on phase ; at power-off, this signal becomes low inhibiting the microprocessor.

■ PRECISE OUTPUT VOLTAGE (5V ± 4%) OVER FULL TEMPERATURE RANGE (– 40 / 125 °C)
■ VERY LOW VOLTAGE DROP (0.75Vmax) OVER FULL T RANGE
■ OUTPUT CURRENT UP TO 500mA
■ RESET FUNCTION
■ POWER-ON RESET DELAY PULSE DEFINED BY THE EXTERNAL CAPACITOR
■ + 80V LOAD DUMP PROTECTION
■ – 80V LOAD DUMP PROTECTION
■ REVERSE VOLTAGE PROTECTION
■ SHORT CIRCUIT PROTECTION AND THER MAL SHUT-DOWN (with hysteresis)
■ LOW START UP CURRENT

 

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L4948 [QUAD VOLTAGE REGULATOR WITH INHIBIT AND RESET ]

other parts : L4946B 

ST-Microelectronics
STMicroelectronics

DESCRIPTION
The L4946B is a quad output low drop voltage regulator. The four outputs are a low drop 10V at 125mA (VO1), a 8.5V at 250mA (VO2), a 5V at 200mA (VO3) and a low drop 5V st-by line at 100mA (VO4).
The IC includes a monitoring circuit to warn if a low voltage or no voltage condition is occurring. VO1,2,3 are off during st-by mode.
The STCAP pin allows the battery voltage to decay slowly giving the µP time to store data. This IC is designed for supplying microcomputer controlled systems specially in automotive applications.

■ 4 OUTPUTS: 10V (125mA); 8.5V (250mA); 5V (200mA); 5V (100mA)
■ 10V AND 5V (100mA) OUTPUT ARE LOW DROP
■ 5V (100mA) ST-BY OUTPUT VOLTAGE
■ EARLY WARNING OUTPUT FOR SUPPLY UNDERVOLTAGE (LVW)
■ THERMAL SHUTDOWN AND CURRENT LIMITATION (FOLDBACK)
■ REVERSE BATTERY AND LOAD DUMP PROTECTION
■ INHIBIT (ON/OFF) AND RESET FUNCTIONS

 

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