TP72 LDO, TP73 DC-DC, TP7661A/B DC-DC, TP74 RESET

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TP72 LDO LINEAR REGULATOR
General Description:
The Tp72 is a low-dropout linear regulator that operations in the input voltage range from
1.8V to 8V and delivers 500mA output current. The high-accuracy and wide-range output voltage can be mask-optioned from 1.5V to 5V with 0.1V increment.
The Tp72 consists of a 1.2V band-gap reference, an error amplifier, and a P-channel pass transistor. Other features include current-limit, and thermal shutdown protection.
The Tp72 devices are available in TO-92, SOT-23 and SOT-89 packages.
Features: Ordering Information:
CMOS Technique
Dropout Voltage 160mV@100mA
350mV@300mA
600mV@500mA
Output Current 500mA(Max.)
Internal Output Current Limit
Output Voltage Range 1.5V to 5V
High-accuracy ¡À2%
Internal Thermal Shutdown Protection
High Power Source Ripple Rejection (PSRR)
Fast Load Response Rate
TO-92, SOT23, SOT89 Packages
Applications:
Battery Powered System
Reference Voltage Sources
Palmtops, Mouse
Portable Cameras, Video Recorders
Portable AV System
Communication Product
MP3 , U DISK, USB Inter
Step-up DC/DC converter ¡ªTP73 Series
Outline
The TP73 series are VFM mode Step-up DC/DC converter with ultra low supply current by CMOS process.
The IC consists of an oscillator,a VFM control circuit,a driver transistor(Lx switch),a reference voltage unit,resistors for voltage detection,an error amplifier,and a Lx switch protection circuit.TP73 series step-up DC/DC converters use VFM mode,comparing to the other congeneric products,it has lower ripple voltage,better driving ability,and higher efficiency.It only needs three external components for application,that is,an inductor,a diode,and a capacitor.
Minimum input voltage is 0.85V, output voltage can be adujusted from 3V to 5V,with a 0.1V step.
Features /parameters
l Few external components for application£º
a schottky diode,an inductor,and a capacitor are needed.we strongly adviced that,a 20~220uH inductor with low value DC parasitic resistor, a 20~100uF tantalum capacitor,and a schottky diode be used.
l Ultra low supply current : 4uA
l Low ripple voltage and low noise : 15mV (typ.)
l High driving capability : 150mA---250mA
l Low start-up voltage : 0.85V (IRL=1mA)
l High efficiency : 85%(Typ.)
l Small package : SOT89 / SOT23 / TO-92
Applications
l TP73 series are suitable for application where the supply requires low noise and low electromagnetism radiation.
l Supply portion for battery power supply
l Power supply portion for toy,camera,VCR,PDA,and portable phone ,etc.
l Power supply voltage higher than the battery voltage
Voltage Detect IC ¨CTP74 Series
Outlines
TP74 series IC are voltage detectors with high precision and low power consuming by CMOS process.The IC is composed of a voltage reference unit,a voltage sampling circuit,a comparator and the output unit.It provides NMOS open drain or CMOS output configuration.
It is used to detect voltage between 1.5V and 3.6V with 0.1V every step,it is also suitable to provide voltage detection for most of Micro-Controllers and Digital System Power supplies.
When the supply voltage decrease to Vdf,reset signal will setup until Vdd get back to a value Vdd>Vdr,circuits get back to the normal operation state.
Applications
l Reset circuits for Micro-Controllers
l Backup circuits for storage battery
l Reset circuits for boot-strap
l Power failure detect
l Battery life and charge voltage detect
Features
l High precision : ¡À2%
l Low Power consuming(Iss) : 1.0uA(typ.)
l Input voltage range : 0.7V~10V
l Output configuration : NMOS open drain / CMOS
l Package : SOT-23 / SOT-89
TP7661A/B CMOS DC/DC CONVERTER
DESCRIPTION
The TP7661A CMOS DC/DC Converter features high operational performance with low power dissipation.
It consists of two major parts: the booster circuitry and the regulator circuitry. The booster generates a doubled
output voltage (¨C2.0V to ¨C16V) from the input (¨C1.0V to ¨C8.0V) or tripled output voltage (¨C3.0V to ¨C18.0V) from the input (¨C1.0V to ¨C6.0V). The regulator is capable of setting the output to any desired voltage. The regulated voltage can be given one of three threshold temperature gradients.(The only difference between TP7661A and TP7661B is that the tp7661B have no the functions of Vreg and RV.)The TP7661A and TP7661B are all compatible with the SCI7661.
FEATURES
*High performance with low power dissipation
*low start voltage and High drive performance
*Simple conversion of VIN (¨C5V) to |VIN| (+5V), 2 |VIN| (+10V), 2 VIN (¨C10V) or 3 VIN (¨C15V)
*On¨Cchip output voltage regulator
*Power conversion efficiency .......................................................... Typ 95%
*Temperature gradient for LCD power supply ................................ 0.1%/¡ãC, 0.4%/¡ãC or 0.6%/¡ãC
*Power off by external signals ¡ª Stationary current at power off ... Max 2mA
*Cascade connection ¡ª two devices connected .............................VIN=¨C5V, VOUT=¨C20V
*On¨Cchip C¨CR oscillator
*Package ..........................................................................................DIP¨C14pin (plastic) SOP5¨C14pin (plastic) SOP16L

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