|
|
Part: ICL7662MT
Category:
Description:
Company: Intersil Corporation
Datasheet: Download ICL7662MT datasheet File size : 338 kB
Request For quote: Find where to buy ICL7662MT
Datasheet text preview:
ICL7662
Da ta S h eet Ap ril 199 9 Fi l e N u m b er 31 81. 3
CMOS Voltage Converter itle L76 ) bt MO olte nrter) utho ) eyrds terrpoion, arge mp, lte nrter, lte ur, lte erte X6 , X1 4, C10 ,
The Intersil ICL7662 is a monolithic high-voltage CMOS power supply circuit which offers unique performance advantages over previously available devices. The ICL7662 performs supply voltage conversion from positive to negative for an input range of + 4.5V to + 20.0V, resulting in complem entary output voltages of - 4.5V to - 20V. Only 2 noncritical external capacitors are needed for the charge pum p and charge reservoir functions. The ICL7662 can also function as a voltage doubler, and will generate output voltages up to + 38.6V with a + 20V input. Contained on chip are a series DC power supply regulator, RC oscillator, voltage level translator, four output power M OS sw itches. A unique logic element senses the most negative voltage in the device and ensures that the output N-Channel sw itch 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 15.0V. This frequency can be lowered by the addition of an external capacitor to the "OSC" terminal, or the oscillator m ay be overdriven by an external clock. The "LV" terminal may be tied to GRO UND to bypass the internal series regulator and improve low voltage (LV) operation. At medium to high voltages (+10V to + 20V), the LV pin is left floating to prevent device latchup.
Features
ˇ No External Diode Needed Over Entire Tem perature Range ˇ Pin Compatible With ICL7660 ˇ Simple Conversion of +15V Supply to -15V Supply ˇ Simple Voltage Multiplication (VOU T = (-)nVIN) ˇ 99.9% Typical Open Circuit Voltage Conversion Efficiency ˇ 96% Typical Power Efficiency ˇ Wide Operating Voltage Range 4.5V to 20.0V ˇ Easy to Use - R equires Only 2 External Non-Critical Passive Components
Applications
ˇ On Board Negative Supply for Dynamic RAMs ˇ Localized ľProcessor (8080 Type) Negative Supplies ˇ Inexpensive Negative Supplies ˇ Data Acquisition System s ˇ Up to -20V for Op Amps
Pinouts
ICL7662CBD- 0 (SOIC) TOP VIEW
TEST 1 NC 2 CAP+ 3 NC 4 GND 5 NC 6 CAP - 7 14 V + 13 OSC 12 NC 11 LV 10 NC 9 NC 8 VOUT
ICL7662CBD AND IBD (SOIC) TOP VIE W
NC 1 TEST 2 NC 3 CAP + 4 G ND 5 NC 6 NC 7 14 V + 13 NC 12 OSC 11 LV 10 NC G ND 9 VOUT 8 CAP CAP+ 2 TEST
ICL7662 (CAN) TOP VIE W
V+ 8 1 7 OSC
6
LV
3 4
5
VOUT
ICL7662 (PDIP) TOP VIE W
TEST CAP+ GND CAP 1 2 3 4 8 V+ 7 OSC 6 LV 5 VOUT
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Americas Inc. Copyright Š Intersil Americas Inc. 2001, All Rights Reserved
ICL7662 Ordering Information
PART NUMBER ICL7662CTV ICL7662CPA ICL7662CBD-0 ICL7662CBD ICL7662ITV ICL7662IPA ICL7662IBD ICL7662MTV (Note 1) NOTE: 1. Add /883 to par t number if /883B processing is required. TEMP. RANGE (oC) 0 to 70 0 to 70 0 to 70 0 to 70 - 40 to 85 - 40 to 85 - 40 to 85 - 55 to 125 PACKA GE P KG. NO.
8 Pin Metal Can T8.C 8 Ld P DIP 14 Ld SOIC (N) 14 Ld SOIC (N) E8.3 M14.15 M14.15
8 Pin Metal Can T8.C 8 Ld P DIP 14 Ld SOIC (N) E8.3 M14.15
8 Pin Metal Can T8.C
Functional Block Diagram
V+
CAP + RC OSCILLATOR
÷2
VOLTAGE LEVEL TRANSLATOR
CAP -
TEST VOUT N OSC LV
P
VOLTAGE REGULATOR
LOGIC NETWORK
2
ICL7662
Absolute Maximum Ratings
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22V Oscillator Input Voltage . . . . . . . . - 0.3V to (V+ + 0.3V) for V+ 10V Curr ent Into LV ( Note 2) . . . . . . . . . . . . . . . . . . . . 20ľA for V+ > 10V Output Short Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
Thermal Information
Thermal Resistance (Typical, Note 3) JA (oC/W) JC (oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . 150 N/A Plastic SOIC Package . . . . . . . . . . . . . 120 N/A Metal Can . . . . . . . . . . . . . . . . . . . . . . . 156 68 Maximum Lead Temperature (Soldering, 10s) . . . . . . . . . . . . . 300oC (SOIC - Lead Tips Only)
CAUTION: Stresses abo ve those listed in "Absolut e Ma ximum Ratings" may cause perma nent damag e to the device. This is a stress only ra ting and operation of th e device at th ese or any other conditio ns a bove those indicated in the ope ra tiona l sections of this sp ecification is n ot implied.
NOTES: 2. Connecting any terminal to voltages greater than V+ or less than GND may cause destructive latchup. It is recommended that no inputs from sour ces operating from external supplies be applied pr ior to "power up" of ICL7660S . 3. JA is measured w ith the component mounted on an evaluation PC board in free air.
Electrical Specifications
P ARAME TER Supply Voltage Range - Lo Supply Voltage Range - Hi Supply Current
V+ = 15V, TA = 25oC, COSC = 0, Unless Otherwise Specified. Refer to Figure 14. SYMBOL V+L V+H I+ TEST CONDITIONS RL = 10k, LV = GND RL = 10k, LV = Open RL = , LV = Open Min < TA < Max Min < TA < Max TA = 25oC 0oC < TA < 70oC - 40oC < TA < 85oC -55oC < TA < 125oC MIN 4.5 9 RL = 2k TA = 25oC Min < TA < Max 93 90 97 TY P 0.25 0.30 0.40 60 70 90 20 25 30 125 150 200 10 96 95 99.9 0.5 4.0 M AX 11 20 0.60 0.85 1.0 100 120 150 150 200 250 200 250 350 UNITS V V mA mA mA ľA ľA ľA k Hz % % % ľA ľA
Output Source Resistance
RO
IO = 20mA, LV = Open
TA = 25oC 0oC < TA < 70oC - 40oC < TA < 85oC -55oC < TA < 125oC
Supply Current
I+
V+ = 5V , RL = , L V = G ND
TA = 25oC 0oC < TA < 70oC - 40oC < TA < 85oC -55oC < TA < 125oC
Output Source Resistance
RO
V+ = 5V, IO = 3mA, L V = G ND
TA = 25oC 0oC < TA < 70oC - 40oC < TA < 85oC -55oC < TA < 125oC
Oscillator Frequency Power Efficiency
FOSC PEFF
Voltage C onversion Efficiency Oscillator Sink or Source Current NOTE:
VoEf IOSC
RL =
Min < TA < Max
V+ = 5V (VOSC = 0V to +5V) V+ = 15V (VOSC = +5V to +15V)
4. Pin 1 is a Test pin and is not connected in normal use. When the TE ST pin is connected to V+, an inter nal transmission gate disconnects any external parasitic capacitance from the oscillator which w ould otherwise reduce the oscillator frequency from its nominal value.
3
Others parts begin by ic
IC-1 IC-2 IC-3 IC-4 IC-5 IC-6 IC-7 IC-8 IC-9 IC-10 IC-11 IC-12 IC-13 IC-14 IC-15 IC-16 IC-17 IC-18 IC-19 IC-20 IC-21 IC-22 IC-23 IC-24 IC-25 IC-26 IC-27 IC-28
|
|
|
