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Part Name(s) : AND8039 AND8039/D AND8039D ON-Semiconductor
ON Semiconductor
Description : The One-Transistor Forward Converter

The one–transistor forward converter is the most elementary form of transformer–isolated buck converter. It is typically used in off–line applications in the 100–300 watt region. This application note illustrates the approach one would take to design a high DC input voltage, one–transistor forward converter.

Part Name(s) : NJU7662 NJU7662D NJU7662M JRC
Japan Radio Corporation


Part Name(s) : NJU7660A NJU7660AM NJU7660AM-TE1 NJU7660AV NJU7660AV-TE1 JRC
Japan Radio Corporation

NJU7660A is a CMOS switched capacitor, voltage converter designed to be an Improved direct replacement of popular 7660/1044.
NJU7660A provides several voltage conversion functions.
The application circuit of negative voltage (VOUT= -VIN) converter requires only two capacitors, and positive twofold voltage(VOUT=2VIN) converter requires two capacitors and two diodes as external components.

 Full Compatible with NJU7660
 Correspond to MLCC and electrolytic capacitor
 Twofold positive Output
 Polarity-converted Negative voltage Output
 Operating voltage range :+1.5V to +10V(for Negative voltage converter)
                                  :+3.0V to +10V(for Twofold voltage converter)
 High-efficiency voltage conversion rate :99.9%(No load, Negative voltage converter)
 Few external components :2 capacitors(Negative voltage converter)
                                   :2 capacitors, 2diode(Twofold voltage converter)
 Package Outline :DMP8, SSOP8
 CMOS Technology


Part Name(s) : ADC3511 ADC3511CC ADC3511CCN ADC3711 ADC3711CC ADC3711CCN National-Semiconductor
National ->Texas Instruments
Description : 3 ½-Digit Microprocessor Compatible A/D Converter

ADC3511 : 3 1/2 - Digit Microprocessor Compatible A/D Converter
ADC3711 : 3 3/4 - Digit Microprocessor Compatible A/D Converter

Part Name(s) : BP5046 BP5046NBSP ROHM
ROHM Semiconductor
Description : AC/DC converter

AC/DC converter
AC220V input, −12V/200mA output


Part Name(s) : TPS65163 TPS65163RGZR TPS65163RGZT TI
Texas Instruments
Description : LCD Bias Supply With Integrated Level Shifters

The TPS65163 integrates a boost converter, buck converter, reset generator, two charge pump
controllers and a nine-channel level shifter in a single device.


Part Name(s) : LC72344W LC72345W SANYO
SANYO -> Panasonic
Description : Low-Voltage ETR Controller with On-Chip DC-DC Converter

The LC72344W and LC72345W are low-voltage electronic tuning microcontrollers that include a DC-DC converter, a PLL that operates up to 230 MHz, a 1/4 duty 1/2 bias LCD driver and other functions on chip. The built-in DC-DC converter provided by these ICs can easily implement a tuning system voltage generator circuit, and furthermore, since the transistor required for the low-pass filter is built in, these ICs can contribute to further end product cost reductions. Additionally, the DC-DC converter output voltage can be provided to other external ICs, making these products optimal for low-voltage portable audio equipment that includes a radio receiver.

Part Name(s) : AKD4555-E AKM
Asahi Kasei Microdevices
Description : Evaluation board Rev.0 for AK4555

AKD4555-E is an evaluation board for the portable digital audio 16bit A/D and D/A converter, AK4555. The AKD4555-E can evaluate A/D converter and D/A converter separately in addition to loopback mode (A/D → D/A). The A/D section can be evaluated by interfacing with AKM’s DAC evaluation boards directly. The AKD4555-E has the interface with AKM’s ADC evaluation boards. Therefore, it’s easy to evaluate the D/A section. The AKD4555-E also has the digital audio interface and can achieve the interface with digital audio systems via opt-connector.

• Compatible with 2 types of interface
   - Direct interface with AKM’s A/D & D/A converter evaluation boards
   - DIT/DIR with optical input/output


Part Name(s) : CD4010BMS Intersil
Description : CMOS Hex Buffer/Converter

CD4010BMS Hex Buffer/Converter may be used as CMOS to TTL or DTL logic-level converter or CMOS high-sink-cur rent driver.

• Non-Inverting Type
• High-Voltage Type (20V Rating)
• 100% Tested for Quiescent Current at 20V
• Maximum Input Current of 1µA at 18V Over Full Package-Temperature Range;
   - 100nA at 18V and +25oC
• 5V, 10V and 15V Parametric Ratings

• CMOS To DTL/TTL Hex Converter
• CMOS Current “Sink” or “Source” Driver
• CMOS High-to-Low Logic-Level Converter
• Multiplexer - 1 to 6 or 6 to 1


Part Name(s) : AN672 ST-Microelectronics

When using the internal Analog to Digital Converter of the ST62 family and maximum A/D converter accuracy is required, it is desirable to filter out any noise present on the analog input, but also noise present on the ground and VCC supply lines of the MCU as VCC is also the voltage reference of the A/D converter. Good decoupling must be made with capacitors on the analog input and between VCC and ground. It is also recommended to put the MCU in wait state while the conversion is in progress, so as to minimize noise injected into VCC by the operation of the micro-controller itself.

Finally, when enough time is available, it is highly recommended to make several successive A/D conversions and take an average of the results. This is the most effective way to get the most accuracy out of the ST6 family A/D converter.

The following code fragment demonstrates a burst of 256 successive measurements, after which the average is put into the accumulator. The whole routine takes approximately 30 milli seconds with an 8 MHz clock. When less time is available, it is of course possible to reduce the number of conversions: 8, 16 or 32 conversions also give good results, although the most con versions give the best results.



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