isl97701 Intersil Corporation, isl97701 Datasheet
isl97701
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isl97701 Summary of contents
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... The ISL97701 represents a high efficiency, boost converter with integrated boost FET, boost diode and input disconnect FET. With an input voltage of 2.3V to 5.5V the ISL97701 has an output capability 50mA at 18V using integrated 500mA switches. Efficiencies are up to 87%. The integrated protection FET is used to disconnect the boost inductor from the input supply whenever an output fault condition is detected, or when the device is disabled ...
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... SOFT BOOST 75 6. NORMAL SLOPE + COMPENSATION As RAMP-GENERATOR - - + Σ ERROR - AMP + C + COMP CLAMP Ai - VOLTAGE FIGURE 1. ISL97701 BLOCK DIAGRAM UNDER-VOLTAGE DETECTOR OVER-CURRENT S2 DETECTOR (DC) OVER- VOLTAGE 2 DETECTOR EN GATE CONTROL LOGIC DRIVER -PWM TIMING -CURRENT LIMIT -PULSE SKIPPING CURRENT LIMIT COMPARATOR RSENSE VDD VDDOUT ...
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... SCHOTTKY DIODE – LX, V OUT Vdiode Forward Voltage from FEEDBACK INPUTS Vref Input Reference Voltage ISL97701 Thermal Information = +25°C) Thermal Resistance (Typical, Notes 1, 2) θ 3x3 DFN Package . . . . . . . . . . . . . . . . + 1V OUT Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Ambient Operating Temperature (T Operating Junction Temperature (T Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +130° ...
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... Soft Inrush Current Source at VDDOUT VDD - VDDOUT = 0.5V, t SS_VDDOUT REGULATION ACC Output Voltage Accuracy, Assuming Resistor Divider Tolerances of 0.1% or Better ΔV /ΔIOUT Load Regulation OUT ΔV /ΔVDD Line Regulation OUT 4 ISL97701 = 390k 39k 10µ CONDITION 10mA 600kHz NSYNC FB = GND t > 2.048ms, DC current T rising T falling IOUT = 50mA, t > ...
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... I (mA) OUT FIGURE 4. EFFICIENCY OUT OUT L = 6.8µH (TDK RLF7030 6.6µF V(NEN) V(VOUT) I(VDD) FIGURE 6. START-UP TO 12V (V = 3.6V 360Ω ISL97701 4.2V 100 150 FIGURE 3. EFFICIENCY 18.3V) OUT 4.2V 150 200 = 12.6V) FIGURE 5. EFFICIENCY vs I FIGURE 7. START-UP TO 18V 90 4.2V 85 3. ...
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... DD 18.29 18.28 18.27 18.26 18.25 18.24 18.23 2.6 2.6 3.1 3.6 4.1 V (V) IN FIGURE 10. LINE REGULATION (I (CH1 = V ; CH4 = iL; CH2 = I ) OUT OUT FIGURE 12. TRANSIENT RESPONSE ( 18.3V; STEP LOAD CURRENT FROM OUT 2.6mA TO 70mA) 6 ISL97701 (Continued) = 360Ω) L 4.6 5.1 = 30mA) OUT = 3.3V; FIGURE 13. RECOMMENDED MAXIMUM OUTPUT POWER vs IN 18.20 18.19 18.18 18.17 18.16 18.15 18.14 18.13 18.12 18.11 18.10 18. 100 LOAD CURRENT (mA) FIGURE 9. LOAD REGULATION (V = 3.6V) ...
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... Description of Operation Enable Pin (active low) - NEN If NEN is high the ISL97701 shuts down all its internal functions and deactivates its I/So. Only the internal pull-up resistor at NEN remains active. If NEN is high the input ...
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... ISL97701 boost function as long as the fault is present. TABLE 1. FAULT PROTECTION FAULT FAULT DESCRIPTION CONDITION ISL97701 FAULT REACTION Undervoltage at V(VDD) < Disables I/Os and waits until VDD V(VDD)off V(VDD) reaches V(VDD)on to begin with the start-up sequence Overcurrent I(VDD ) > ...
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... VOUT 3 8 VDD NEN 4 7 NSYNC GND ISL97701 FIGURE 18. ISL97701 APPLICATION BOARD TABLE 2. OPTIMAL COMBINATION OF BOOST INDUCTOR L INDUCTOR (µH) 4.7 6 Recommended Inductor and Ceramic capacitor manufacturers are listed in Table 3: TABLE 3. RECOMMENDED INDUCTOR AND CERAMIC INDUCTOR Sumida: www.sumida.com (EQ. 3) TDK: www ...
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... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 10 ISL97701 MDP0047 DUAL FLAT NO-LEAD PACKAGE FAMILY (JEDEC REG: MO-229) 0.075 C ...