Inversor de voltaje tc7660

EVALUATION KIT AVAILABLE

1
TC7660H

HIGH FREQUENCY 7660 DC-TO-DC VOLTAGE CONVERTER
FEATURES
s s s s s s s Pin Compatible with 7660, High Frequency Performance DC-to-DC Converter Low Cost, Two Low Value External Capacitors Required ........................................................ (1.0µF) Converts +5V Logic Supply to ±5V System Wide Input Voltage Range .................... 1.5V to10V Voltage Conversion ........................................ 99.7% Power Efficiency ................................................ 85% Available in 8-Pin SOIC and 8-Pin PDIP Packages

GENERAL DESCRIPTION
The TC7660H is a pin-compatible, high frequency upgrade to the Industry standard TC7660 charge pump voltage converter. It converts a +1.5V to +10V input to a corresponding – 1.5V to -10Voutput using only two low-cost capacitors, eliminating inductors and their associated cost, size and EMI. The TC7660H operates at a frequency of 120kHz (versus 10kHz for the TC7660), allowing the use of 1.0µF external capacitors. Oscillator frequency can be reduced (for lower supply current applications) by connecting an external capacitor from OSC to ground. The TC7660H is available in 8-pin DIPand small outline (SOIC) packages in commercial and extended temperature ranges.

2 3 4 5 6

FUNCTIONAL BLOCK DIAGRAM
V + CAP + 8 2

ORDERING INFORMATION
OSC 7 RC OSCILLATOR ÷2 VOLTAGE– LEVEL TRANSLATOR 4 CAP – LV 6 5 INTERNAL VOLTAGE REGULATOR LOGIC NETWORK VOUT

Part No.
TC7660HCOA TC7660HCPA TC7660HEOA TC7660HEPA

Package
8-Pin SOIC 8-Pin Plastic DIP 8-Pin SOIC 8-Pin Plastic DIPTemperature Range
0°C to +70°C 0°C to +70°C – 40°C to +85°C

TC7660H
3 GND

TC7660EV

– 40°C to +85°C Evaluation Kit for Charge Pump Family

PIN CONFIGURATION (DIP and SOIC)

NC

1

8

V+

CAP + 2 GND 3 TC7660HCPA TC7660HEPA

7 OSC 6 LOW VOLTAGE (LV) 5 VOUT

CAP – 4

NC CAP + GND CAP –

1 2 3 4 TC7660HCOA TC7660HEOA

8 7 6 5

V+ OSC LOW VOLTAGE (LV) VOUT

7

NC= NO INTERNAL CONNECTION
TC7660H-2 10/1/96

8
4-63

TELCOM SEMICONDUCTOR, INC.

HIGH FREQUENCY 7660 DC-TO-DC VOLTAGE CONVERTER TC7660H
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage ...................................................... +10.5V LV and OSC Inputs Voltage (Note 1) ........................ – 0.3V to (V+ + 0.3V) for V+ < 5.5V + – 5.5V) to (V+ + 0.3V) (V for V+ > 5.5V Current IntoLV (Note 1) ...................... 20µA for V+ > 3.5V Output Short Duration (VSUPPLY ≤ 5.5V) ......... Continuous Power Dissipation (TA ≤ 70°C) (Note 2) SOIC ............................................................... 470mW Plastic DIP ......................................................730mW Operating Temperature Range C Suffix .................................................. 0°C to +70°CE Suffix ............................................. – 40°C to +85°C Storage Temperature Range ................ – 65°C to +150°C Lead Temperature (Soldering, 10 sec) ................. +300°C
*Static-sensitive device. Unused devices must be stored in conductive material. Protect devices from static discharge and static fields. Stresses above those listed under "Absolute Maximum Ratings" maycause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS: Over Operating Temperature Range with V+= 5V,CI = C2 = 1µF,COSC = 0,
Test Circuit (Figure 1), unless otherwise indicated. Symbol
I+ + VH
+ VL

Parameter
Supply Current Supply Voltage Range, High Supply Voltage Range, Low Output Source Resistance

Test Conditions
RL = ∞ Min ≤ TA ≤ Max, RL = 5kΩ, LV Open Min ≤ TA ≤ Max, RL = 5kΩ, LV to GND IOUT = 20mA, TA = 25°C IOUT = 20mA, 0°C ≤ TA ≤ +70°C (C Device) IOUT = 20mA, – 40°C ≤ TA ≤...