EL7581_06 INTERSIL [Intersil Corporation], EL7581_06 Datasheet
EL7581_06
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EL7581_06 Summary of contents
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Data Sheet 3-Channel DC/DC Converter The EL7581 is a 3-channel DC/DC converter IC which is designed primarily for use in TFT/LCD applications. It features a PWM boost converter with 2.7V to 14V input capability and 5V to 17V output, ...
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Absolute Maximum Ratings (T = 25° Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Electrical Specifications V = 3.3V PARAMETER DESCRIPTION NEGATIVE REGULATED CHARGE PUMP (V Most negative V output depends on the magnitude of the V OFF configuration (doubler or tripler) V Supply Input for Negative Charge Pump DDN IQ1(V ) ...
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Pin Descriptions I = Input Output Supply PIN NUMBER PIN NAME PIN TYPE 1 VSSB FBB 4 VDDB DRVN 9 VDDN 10 FBN 11 VSSP 12 ...
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Typical Performance Curves 1MHz 200 400 600 I (mA) OUT FIGURE 1. EFFICIENCY 15V ...
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Typical Performance Curves 15V 12V -2 50 250 450 650 I (mA) OUT FIGURE 7. LOAD REGULATION 12V DDP ...
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Typical Performance Curves R = 61.9kΩ OSC 970 969 968 967 966 965 964 963 962 3 3.5 4 4.5 V (V) DDB FIGURE 13 5V 13V 100mA ...
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Typical Performance Curves I = 15mA -6V 3.3µF O OFF OFF 20mV/DIV 2µs/DIV FIGURE 19. V RIPPLE OFF C = 0.033µ 2V/DIV I IN 0.5A/DIV 1ms/DIV FIGURE 21. START-UP VOLTAGE AND CURRENT C ...
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Typical Performance Curves C = 0.1µF SS 5V/DIV 10V/DIV 2V/DIV 200ms/DIV FIGURE 25. POWER-DOWN, 100K AND 0.1µF DELAY NETWORK ON ENP 11.3V OUT I = 50mA OUT FIGURE 27. LX WAVEFORM - DISCONTINUOUS MODE ...
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Typical Performance Curves FIGURE 31. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE Block Diagram FBB MAX_DUTY R OSC REFERENCE R 3 GENERATOR 62kΩ V REF V RAMP ENBN 10 EL7581 (Continued) JEDEC JESD51-3 LOW EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD 1 0.9 ...
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Applications Information The EL7581 is high efficiency multiple output power solution designed specifically for thin-film transistor (TFT) liquid crystal display (LCD) applications. The device contains one high current boost converter and two low power charge pumps (V and V ). ...
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Component Considerations Input Capacitor It is recommended that C is larger than 10µF. IN Theoretically, the input capacitor has ripple current of ∆I Due to high-frequency noise in the circuit, the input current ripple may exceed the theoretical value. Larger ...
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V DDN 5V to 17V 0.1µF R ONP DRVN C CPN V R OFF ONN C OUT2 V SSN 3.3µ FBN REF (1.32V) Positive Charge Pump Design Considerations A single stage charge pump is shown ...
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Two-Stage Positive Charge Pump Circuit V DDP R ONP DRNP R ONN V SSP - + 1.265V The maximum V output voltage for N+1 stage charge pump is ≤ × × × max 2 V ...
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Two-Stage Negative Charge Pump Circuit V DDN R DRVN The maximum V output voltage for N+1 stage charge pump is: OFF ( ) ≥ × × max OFF OUT ...
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Typical Application Circuit R 2 110K OPEN 1 13K V BOOST (12V@ 10µF OPEN 22µF 500mA 10µF 4.7µF GND V OFF (-6V@ 15mA) ...
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Package Outline Drawing NOTE: The package drawing shown here may not be the latest version. To check the latest revision, please refer to the Intersil website at http://www.intersil.com/design/packages/index.asp All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality ...