Datasheet > TJ7660

TJ7660

更新时间： 2024-11-15 03:27:35

品牌	Logo	应用领域
韩国泰进 - HTC		转换器泵
页数	文件大小	规格书
11页	789K
描述
Charge Pump Voltage Converters

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TJ7660 数据手册

Charge Pump Voltage Converters

TJ7660

FEATURES

• Simple Conversion of +5V Logic Supply to ±5V Supplies

• Simple Voltage Multiplication (V^OUT= (-) 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

SOP-8 PKG

DIP-8 PKG

• No External Diode Over Full Temp. and Voltage Range

APPLICATION

• On Board Negative Supply for Dynamic RAMs

• Localized µProcessor (8080 Type) Negative Supplies

• Inexpensive Negative Supplies

< Pin Configuration

• Data Acquisition Systems

ORDERING INFORMATION

Device

Package

TJ7660D

TJ7660N

SOP-8

D I P-8

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

Jan. 2007-Rev 1.0

HTC

12 3 4 5 6 7...11

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