TC7662B

Features:


Wide Operating Voltage Range: 1.5V to 15V

Boost Pin (Pin 1) for Higher Switching Frequency

High Power Efficiency is 96%

Easy to Use Requires Only 2 External Non-Critical Passive Components

Improved Direct Replacement for Industry Standard ICL7660 and Other Second Source Devices




Application

Simple Conversion of +5V to ±5V Supplies
Voltage Multiplication VOUT = ±nVIN
Negative Supplies for Data Acquisition Systems and Instrumentation
RS232 Power Supplies
Supply Splitter, VOUT = ±VS/2

Specifications

Parameter Name	Value
Typical Active Output Current (mA)	20
Output Voltage (V)	Vout = -Vin or Vout = 2Vin
Typical Quiescent Current (A)	180
Input Voltage Range (V)	1.5 to 15
Operating Temp. Range (°C)	-45 to 85
Device Description	Inverting or Doubling

Parameter NameValueTypical Active Output Current (mA)20Output Voltage (V)Vout = -Vin or Vout = 2VinTypical Quiescent Current (A)180Input Voltage Range (V)1.5 to 15Operating Temp. Range (°C)-45 to 85Device DescriptionInverting or Doubling

Supply Voltage ...................................................... +16.5V
LV, Boost and OSC Inputs Voltage (Note 1)
V+<5.5V ....................................... 0.3V to (V+ + 0.3V)
>5.5V ................................... (V+ 5.5V) to (V+ + 0.3V)
Current Into LV (Note 1)
V+ >3.5V ................................................................ 20A
Output Short Duration
(VSUPPLY 5.5V) ......................................... Continuous
Power Dissipation (TA 70°C) (Note 2)
Plastic DIP ............................................................730mW
SO ........................................................................470mW




Description

The TC7662B is a pin-compatible upgrade to the Industry standard TC7660 charge pump voltage converter. It converts a +1.5V to +15V input to a corresponding 1.5 to 15V output using only two low-cost capacitors, eliminating inductors and their associated cost, size and EMI. The on-board oscillator operates at a nominal frequency of 10kHz. Frequency is increased to 35kHz when pin 1 is connected to V + , allowing the use of smaller external capacitors. Operation below 10kHz (for lower supply current applications) is also possible by connecting an external capacitor from OSC to ground (with pin 1 open). The TC7662B is available in both 8-pin DIP and 8-pin small outline (SO) packages in commercial and extended temperature ranges.

The TC7662B is a pin-compatible upgrade to the Industry standard TC7660 charge pump voltage converter. It converts a +1.5V to +15V input to a corresponding 1.5 to 15V output using only two low-cost capacitors, eliminating inductors and their associated cost, size and EMI. The on-board oscillator operates at a nominal frequency of 10kHz. Frequency is increased to 35kHz when pin 1 is connected to V + , allowing the use of smaller external capacitors. Operation below 10kHz (for lower supply current applications) is also possible by connecting an external capacitor from OSC to ground (with pin 1 open). The TC7662B is available in both 8-pin DIP and 8-pin small outline (SO) packages in commercial and extended temperature ranges.