ICL7660 Intersil Corporation, ICL7660 Datasheet
ICL7660
Available stocks
Related parts for ICL7660
ICL7660 Summary of contents
Page 1
... Simple Voltage Multiplication (V • Typical Open Circuit Voltage Conversion Efficiency 99.9% • Typical Power Efficiency 98% • Wide Operating Voltage Range - ICL7660 . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5V to 10.0V - ICL7660A . . . . . . . . . . . . . . . . . . . . . . . . . 1.5V to 12.0V • ICL7660A 100% Tested at 3V • Easy to Use - Requires Only 2 External Non-Critical Passive Components • ...
Page 2
... Ordering Information PART NUMBER ICL7660CBA* 7660CBA ICL7660CBAZ* (See Note) 7660CBAZ ICL7660CBAZA* (See Note) 7660CBAZ ICL7660CPA 7660CPA ICL7660CPAZ ( See Note) 7660CPAZ ICL7660ACBA* 7660ACBA ICL7660ACBAZA* (See Note) 7660ACBAZ ICL7660ACPA 7660ACPA ICL7660ACPAZ (See Note) 7660ACPAZ ICL7660AIBA* 7660AIBA ICL7660AIBAZA* (See Note) 7660AIBAZ *Add “-T” suffix to part number for tape and reel packaging. ...
Page 3
... C Absolute Maximum Ratings Supply Voltage ICL7660 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +10.5V ICL7660A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +13.0V LV and OSC Input Voltage . . . . . . -0.3V to (V+ +0.3V) for V+ < 5.5V (Note (V+ -5.5V) to (V+ +0.3V) for V+ > 5.5V Current into LV (Note 20µA for V+ > 3.5V ≤ 5.5V Continuous Output Short Duration (V SUPPLY Operating Conditions Temperature Range ICL7660C, ICL7660AC 0° ...
Page 4
... In the test circuit, there is no external capacitor applied to pin 7. However, when the device is plugged into a test socket, there is usually a very small but finite stray capacitance present, of the order of 5pF. 5. The Intersil ICL7660A can operate without an external diode over the full temperature and voltage range. This device will function in existing designs which incorporate an external diode with no degradation in overall circuit performance. ...
Page 5
... C (pF) OSC FIGURE 5. FREQUENCY OF OSCILLATION AS A FUNCTION OF EXTERNAL OSC. CAPACITANCE 5 ° + SLOPE 55Ω LOAD CURRENT I FIGURE 7. OUTPUT VOLTAGE AS A FUNCTION OF OUTPUT CURRENT 5 ICL7660, ICL7660A (Test Circuit of Figure 11) (Continued) 100 + 100 125 °C ) FIGURE 4. POWER CONVERSION EFFICIENCY 1000 10K FIGURE 6. UNLOADED OSCILLATOR FREQUENCY AS A ...
Page 6
... FIGURE 9. OUTPUT VOLTAGE AS A FUNCTION OF OUTPUT CURRENT NOTE: 6. These curves include in the supply current that current fed directly into the load R supply current goes directly to the positive side of the load, and the other half, through the ICL7660/ICL7660A, to the negative side of the load. ∼ ∼ Ideally, V ...
Page 7
... When using polarized capacitors, the + terminal of C must be connected to pin 2 of the ICL7660 and ICL7660A and the + terminal the voltage supply driving the ICL7660 and ICL7660A has a large source impedance (25Ω - 30Ω), then a 2.2µF capacitor from pin 8 to ground may be required to limit rate of rise of input voltage to less than 2V/µ ...
Page 8
... FIGURE 16. CASCADING DEVICES FOR INCREASED OUTPUT VOLTAGE Typical Applications Simple Negative Voltage Converter The majority of applications will undoubtedly utilize the ICL7660 and ICL7660A for generation of negative supply voltages. Figure 13 shows typical connections to provide a negative supply negative (GND) for supply voltages below 3.5V. ...
Page 9
... ICL7660, ICL7660A = 10kHz and Cascading Devices OSC The ICL7660 and ICL7660A may be cascaded as shown to produced larger negative multiplication of the initial supply ) + ESR voltage. However, due to the finite efficiency of each device the practical limit is 10 devices for light loads. The output ...
Page 10
... Regulated Negative Voltage Supply In some cases, the output impedance of the ICL7660 and ICL7660A can be a problem, particularly if the load current varies substantially. The circuit of Figure 22 can be used to overcome this by controlling the input voltage, via an ICL7611 low-power CMOS op amp, in such a way as to maintain a nearly constant output voltage ...
Page 11
... Other Applications Further information on the operation and use of the ICL7660 and ICL7660A may be found in AN051 “Principals and Applications of the ICL7660 and ICL7660A CMOS Voltage Converter”. +5V LOGIC SUPPLY TTL DATA INPUT 1 2 ICL7660 + ICL7660A 10µ All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. ...