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TJ7660, TJ7660C, TJ7660D

TJ7660, TJ7660C, TJ7660D Selling Leads, Datasheet

MFG:HTC  Package Cooled:SOP-8/DIP-8  D/C:09+

TJ7660, TJ7660C, TJ7660D Picture

TJ7660, TJ7660C, TJ7660D Datasheet download

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Part Number: TJ7660

 

MFG: HTC

Package Cooled: SOP-8/DIP-8

D/C: 09+

 

 

 
 
 
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About TJ7660D

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Datasheet: TJ7660D

File Size: 801818 KB

Manufacturer: HTC Korea TAEJIN Technology Co.

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About TJ7660D

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Datasheet: TJ7660D

File Size: 801818 KB

Manufacturer: HTC Korea TAEJIN Technology Co.

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Datasheet: TJ7660D

File Size: 801818 KB

Manufacturer: HTC Korea TAEJIN Technology Co.

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TJ7660 General Description

The HTC 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 latchup 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

TJ7660 Maximum Ratings

Supply Voltage TJ7660
+10.5V
V
LV and OSC Input Voltage (Note2)
-0.3V to [(V+ +0.3V) for V+] < 5.5V
V
(V+ -5.5V) to [(V+ +0.3V) for V+] > 5.5V
Current into LV (Note 2)
20A for V+ > 3.5V
A
Output Short Duration (VSUPPLY 5.5V)
Continuous
Operating Ambient Temperature
0 to 70

TJ7660 Features

• Simple Conversion of +5V Logic Supply to ±5V Supplies
• Simple Voltage Multiplication (VOUT = (-) nVIN)
• Typical Open Circuit Voltage Conversion Efficiency 99.9%
• Typical Power Efficiency 98%
• Wide Operating Voltage Range- TJ7660 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

TJ7660 Typical Application

• On Board Negative Supply for Dynamic RAMs
• Localized Processor (8080 Type) Negative Supplies
• Inexpensive Negative Supplies
• Data Acquisition Systems

TJ7660 Connection Diagram

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