LX1745CPW Microsemi Analog Mixed Signal Group, LX1745CPW Datasheet
LX1745CPW
Specifications of LX1745CPW
Related parts for LX1745CPW
LX1745CPW Summary of contents
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... Plastic TSSOP PW 20-Pin T (°C) A RoHS Compliant / Pb-free Transition DC: 0442 - LX1745CPW Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1745CPW-TR) Microsemi Integrated Products Division LX1745 P D RODUCTION ATASHEET > 90% Maximum Efficiency Low Quiescent Supply Current Externally Programmable Peak ...
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Supply Input Voltage ...........................................................................-0. Feedback Input Voltage (V ) ...............................................-0. FBx Shutdown Input ...
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TM Name Unregulated IC Supply Voltage Input – Input range from +1.6V to 6.0V. Bypass with a 1μF or greater capacitor IN for operation below 2.0V. DRV LED MOSFET Gate Driver – Connects to an external N-Channel MOSFET. SRC LED ...
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TM Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C otherwise noted and the following test conditions: V Parameter LED DRIVER LFB Threshold Voltage LFB Input Bias Current BRT Input Voltage Range BRT Input Bias Current ...
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TM LFB Reference Logic BRT 50pF 2.5MΩ IN OVP REF Reference Logic ADJx 50pF 2.5MΩ Voltage Reference Reference Logic ADJx 50pF 2.5MΩ Copyright © 2000 Rev. 1.2, 2006-02-27 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 ® Triple ...
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1.6V to 6.0V BAT - V LCD 25V LCD1 IN R (Feedforward Capacitor 25V LCD2 IN Figure 2 – LED Driver with Full-Range Dimming plus LCD ...
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UNCTIONAL ESCRIPTION The LX1745 is a triple output Pulse Frequency Modulated (PFM) boost converter that is optimized for large step-up voltage applications like LCD biasing and LED drive. Operating in a pseudo-hysteretic mode with a fixed switch ...
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TM less than 100kHz, an external filter capacitor will be needed (Figure 5). The value of C based on the PWM frequency and R following equation PWM ⋅ π ⋅ PWM where << ...
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TM negative voltage transition that is greater than the output voltage OWER OSFET ELECTION The LX1745 can source up to 100mA of gate current. An logic level N-channel MOSFET with a low turn on threshold voltage, low ...
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TM N LCD B G EGATIVE IAS ENERATION For applications that require it, a negative bias can be easily generated using an inductorless charge pump consisting of only four additional discrete components (Figure 8 OUT D ...
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TM Input/Output Name Range VIN GND 0V ADJ1 0 to VIN-100mV ADJ2 SHDN 0 to VIN SHDN1 SHDN2 VLCD1 ≤25V -VLCD ≥-25V VLCD2 ≤25V VOUT ≤25V FDBK 0 to VIN BRT 0 to 350mV REF 1.19V Typ. ...
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... RESISTOR, 1.25M, 1/16W, 0805 R9, R10, R11 RESISTOR, 10K, 1/16W, 0805 R12, R13 RESISTOR, 100K, 1/16W, 0805 U1 Microsemi LX1745CPW BOOST CONTROLLER Notes 1. Use these locations to insert additional input and/or output capacitance. Copyright © 2000 Rev. 1.2, 2006-02-27 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 ® ...
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TM L1 Vin 1 47.0uH C1 1 GND spare 4.7uF 6.3V FDV303N R9 R10 R11 10K 10K 10K L2 1 ADJ1 SHDN1 1 SHDN SHDN2 CR3 22V VLCD2 1 UPS5819 ...
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0.5 1 Adjustment Signal Voltage (VADJx) Figure 12 – Output Voltage Vs. Adjustment Signal Threshold Note: The ...
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TM PW 20-Pin Thin Small Shrink Outline Package (TSSOP SEATING PLANE * Lead Coplanarity Note: Dimensions do not include mold flash or protrusions; these shall not exceed 0.155mm(.006”) on any side. Lead dimension shall not include solder coverage. ...
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TM PRODUCTION DATA – Information contained in this document is proprietary to Microsemi and is current as of publication date. This document may not be modified in any way without the express written consent of Microsemi. Product processing does not ...