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TJ7660

SKU: TJ7660

  • HTC KOREA

Charge pump voltage converter

HTC Korea TJ7660 is a monolithic CMOS power supply circuit which offers unique performance advantages over previously available devices. The TJ7660 performs supply voltage conversions from positive to negative for an input range of +1.5V to +10.0V
resulting in complementary output voltages of -1.5V to -10.0V. Only 2 noncritical  external capacitors are needed for the charge pump and charge reservoir functions.
The TJ7660 can also be connected to function as voltage doublers and will generate output voltages up to +18.6V with a +10V input. Contained on the chip are a series DC supply regulator, RC oscillator, voltage level translator, and four output power MOS switches. A unique logic element senses the most negative voltage in the device and ensures that the output N-Channel switch source-substrate junctions are not forward biased. This assures latch-up free operation. The oscillator, when unloaded, oscillates at a nominal frequency of 10kHz for an input supply voltage of 5.0V. This frequency can be lowered by the addition of an external capacitor to the “OSC” terminal, or the oscillator
may be overdriven by an external clock. The “LV” terminal may be tied to GROUND to bypass the internal series regulator and improve low voltage (LV) operation. At medium to high voltages (+3.5V to +10.0V for the TJ7660), the LV pin is left floating to prevent
device latch-up.

 

TJ7660 features :

  • Simple conversion of +5V logic supply ±5V supplies
  • Simple voltage multiplication (VOUT = (-) nVIN)
  • Typical open circuit voltage conversion efficiency 99.9%
  • Typical power efficiency 98%
  • Wide operating voltage range 1.5V to 10.0V
  • Easy to use – requires only 2 external non-critical passive components
  • No external diode over-full temp. and voltage range
  • Moisture sensitivity level 3

 

TJ7660 applications :

  • On board negative supply for dynamic RAMs
  • Localized µ-processor (8080 type) negative supplies
  • Inexpensive negative supplies
  • Data acquisition systems

 

Device
 
Package
TJ7660D

SOP-8
TJ7660NDIP-8

 

TJ7660D cross reference

 

 

 

LM2660MX
TI

CAT660EVA-GT3

ON-SEMI
TJ7660N cross reference:
   
TL7660CP
TI  

Part in black : pin to pin compatible
Part in blue: Same pin configuration but different characteristics.
Part in vert : same function but different pin configuration or characteristics.

 

Converter & controller- Charge pump converter
Device
Name 
Supply voltage [V] Output voltage [V]
Supply current [µA] Power efficiency [%] Frequency [KHz] 
Packages
TJ766010.5 (absolute)-nVIN1009810SOP-8 / DIP-8

 

HTC Korea converters controllers are designed in South Korea. High quality products, they will match your application needs.