isl97519 Intersil Corporation, isl97519 Datasheet
isl97519
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isl97519 Summary of contents
Page 1
... These features along with 1.2MHz switching frequency makes it an ideal device for portable equipment and TFT-LCD displays. The ISL97519 is available MSOP package with a maximum height of 1.1mm. The device is specified for operation over the full -40°C to +85°C temperature range. ...
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... HYS V UVLO Hysteresis DD I Soft-Start Charge Current SS OTP Over-Temperature Protection 2 ISL97519 Thermal Information = +25°C) Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Operating Ambient Temperature . . . . . . . . . . . . . . . .-40°C to +85°C + 0.3V) Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +135°C DD Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp ...
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... Frequency select pin. When FSEL is set low, switching frequency is set to 620kHz. When connected to high Soft-start control pin. Connect a capacitor to control the converter start-up. Typical Application Circuit R 3 3.9kΩ 4.7nF 3 ISL97519 FSEL EN SHUTDOWN AND START-UP OSCILLATOR CONTROL PWM LOGIC CONTROLLER COMPARATOR CURRENT SENSE GM ...
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... 1.25MHz s 0 12V 80mA 1.25MHz 0 12V 80mA 620kHz s -0 (V) IN FIGURE 5. LINE REGULATION ISL97519 = 1.25MHz s = 1.25MHz 800 1000 OUT 1.25MHz 5V 9V 620kHz s 800 1000 OUT = 100mA 620kHz ...
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... FIGURE 7. TRANSIENT RESPONSE FIGURE 9. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE Applications Information The ISL97519 is a high frequency, high efficiency boost regulator operated at constant frequency PWM mode. The boost converter stores energy from an input voltage source and deliver higher output voltage. The input voltage range is 2 ...
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... ESR and small packages. Tantalum capacitors with higher ESR can also be used. The output ripple can be calculated in Equation 6: I OUT ΔV ------------------------ - = OUT ISL97519 Δ Δt 2 ΔV O SWITCH OPEN ⎛ ⎞ × ⎜ ⎟ ...
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... When connecting FSEL high or VDD, the switching frequency is set to 1.25MHz. 7 ISL97519 Shut-down Control When the EN pin is pulled down, the ISL97519 is shut down reducing the supply current to <1µA. Maximum Output Current The MOSFET current limit is nominally 2.0A and guaranteed 1.7A. This restricts the maximum output current, I ...
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... FB INTERSIL ISL97519 FIGURE 13. CASCADED MOSFET TOPOLOGY FOR HIGH OUTPUT VOLTAGE APPLICATIONS 8 ISL97519 DC Path Block Application A VDD Note that there path in the boost converter from the input to the output through the inductor and diode, hence the input voltage will be seen at output with a forward voltage drop of diode before the part is enabled ...
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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 9 ISL97519 MDP0043 A MINI SO PACKAGE FAMILY ...