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NCP7662 Inductorless Voltage Converter
The NCP7662 is a pin–compatible upgrade to the industry standard TC7660 charge pump voltage converter. It converts a +1.5 V to +15 V input to a corresponding –1.5 to –15 V 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 10 kHz. Frequency is increased to 35 kHz when pin 1 is connected to V+, allowing the use of smaller external capacitors. Operation below 10 kHz (for lower supply current applications) is also possible by connecting an external capacitor from OSC to ground (with pin 1 open). The NCP7662 is available in both 8–pin DIP and 8–pin small outline (SO) packages in commercial and extended temperature ranges.
Features http://onsemi.com MARKING DIAGRAMS
8 8 1 SO–8 D SUFFIX CASE 751 1 8 PDIP–8 P SUFFIX CASE 626 1 YY, Y WW X Z CO = Year = Work Week = Assembly ID Code = Subcontractor ID Code = Country of Orgin NCP7662 YYWWXZ CO NCP 7662 YWWXZ
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www.DataSheet4U.com
Wide Operating Voltage Range: 1.5 V to 15 V 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 Simple Conversion of +5 V to 5 V Supplies Voltage Multiplication VOUT = nVIN Negative Supplies for Data Acquisition Systems and Instrumentation RS232 Power Supplies Supply Splitter, VOUT = VS/2
8 1
Applications
CAP+ 2 GND 3 CAP– 4
NCP7662 Package SO–8 PDIP–8
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PIN CONNECTIONS
BOOST 1 8 V+ 7 OSC 6 LOW VOLTAGE (LV) 5 VOUT
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ORDERING INFORMATION
Device NCP7662DR2 NCP7662P Shipping 2500 Tape & Reel 50 Units/Rail
© Semiconductor Components Industries, LLC, 2000
1
June, 2000 – Rev. 0
Publication Order Number: NCP7662/D
NCP7662
Functional Block Diagram
V+ 8 BOOST 1 2
CAP +
7 OSC 6
RC OSCILLATOR
B2
VOLTAGE LEVEL TRANSLATOR
4
CAP –
LV
5 V OUT INTERNAL VOLTAGE REGULATOR NCP7662 3 GND
LOGIC NETWORK
ABSOLUTE MAXIMUM RATINGS
Rating Supply Voltage LV, Boost and OSC Inputs Voltage (Note 1.) V+ 5.5 V 5.5 V Symbol Value +16.5 –0.3 V to (V+ + 0.3 V) (V+ –5.5 V) to (V+ + 0.3 V) 20 Continuous µA V mW 730 470 –40 to +85 –65 to +150 +300 °C °C °C Unit V V
u
t
Current into LV (Note 1.) V+ 3.5 V
u
Output Short Duration (VSUPPLY 5.5 V)
v
Power Dissipation (Note 2.) Plastic DIP SO Operating Temperature Range Storage Temperature Range Lead Temperature (Soldering, 10 sec)
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’’ may cause 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.