LTC3524EUF#PBF Linear Technology, LTC3524EUF#PBF Datasheet
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LTC3524EUF#PBF
Specifications of LTC3524EUF#PBF
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LTC3524EUF#PBF Summary of contents
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... The LTC3524 is offered in the 4mm × 4mm 24-pin QFN package, minimizing the total solution footprint. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. True Color PWM is a registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 3.3μH 10μ ...
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... VN .............................................................. –21 to +0.3V Operating Temperature Range (Note 2) ...–40°C to 85°C Storage Temperature Range ...................–65°C to 125°C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC3524EUF#PBF LTC3524EUF#TRPBF LEAD BASED FINISH TAPE AND REEL LTC3524EUF LTC3524EUF#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are T PARAMETER Switch Current Limit Charge Pumps V2x Output Voltage Output Impedance V2x V2x Maximum Operating Voltage VH Output Voltage (Quadrupler) Output Impedance (2X + Quadrupler) FBH Regulation Voltage VH Maximum Operating ...
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LTC3524 TYPICAL PERFORMANCE CHARACTERISTICS LCD Boost Effi ciency vs Load Current 100 L = 10μ OUT ...
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TYPICAL PERFORMANCE CHARACTERISTICS LCD Bias Sequencing VH V2X 5V/DIV V OUT VN 3524 G11 5ms/DIV SW1 Voltage and 10μH Inductor Current at 5mA Load SW1 2V/DIV I BOOST LCD INDUCTOR CURRENT 50mA/DIV 3524 G14 200ns/DIV LED Burst Dimming Waveforms LED1 ...
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LTC3524 PIN FUNCTIONS V (Pin 2): Common Input Supply for LCD Bias and White IN LED Boost Converters. This pin must be locally bypassed with a minimum of 2.2μF. GND/Exposed Pad (Pin 25): Signal and Power Ground for the LTC3524. ...
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LCD BIAS PIN FUNCTIONS FBN (Pin 13): Feedback Pin for the VN Charge-Pump Output. Reference voltage is 1.0V. Connect the resistive divider tap between V and VN here with minimum OUT trace area − − ...
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LTC3524 BLOCK DIAGRAM + OUT SHDN 324k FBVO 1.225V – V2x +10V 8 SHDN REGULATED CHARGE – CH PUMP 17 QUADRUPLER VH +12.5V 15 OUT ...
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OPERATION The LTC3524 is a highly integrated power converter intended for small to medium-sized TFT LCD display modules. The part generates the required bias voltages for the LCD panel as well as regulated current for one or two white LED ...
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LTC3524 OPERATION The doubler is internally connected voltage of approximately 2X V OUT has its input connected to V2x and output to VH. The regu- lated VH voltage is programmed at FBH and can be set to ...
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OPERATION output voltage is not set to a fi xed voltage, but rather controlled to produce the programmed current in the LED strings. The output (VLED) is rated for a maximum of 21V which will support two strings of up ...
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LTC3524 APPLICATIONS INFORMATION Inductor Selection 3.3μH to 15μH inductors are recommended for use with the LTC3524’s two boost converters. The synchronous LCD bias boost inductor should have a saturation current (I ) rating of at least 150mA, where the nonsynchronous ...
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APPLICATIONS INFORMATION and VH should be at least 0.47μF. Please be certain that the capacitors used are rated for the maximum voltage with adequate safety margin. Refer to Table 2 for a listing of capacitor vendors. Table 2. Capacitor Vendor ...
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LTC3524 TYPICAL APPLICATIONS Li-Ion to +5V, 25mA, +16V, 1mA, –13V, 1mA TFT LCD Power Supply + 10 White LEDs + Li-Ion – +5V, 25mA 10μF 324k +10V 0.47μF +16V, 1mA 0.47μF 165k 14 2.2μF 10μH 4.7μH SW1 V SW2 IN ...
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... ON THE TOP AND BOTTOM OF PACKAGE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. UF Package 24-Lead Plastic QFN (4mm × ...
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... Constant-Current, 2.3MHz, Dual High Effi ciency White LED Boost Regulator with Integrated Schottky Diode for 12 LEDs LT3591 Constant-Current, 1MHz, High Effi ciency White LED Boost Regulator with Integrated Schottky Diode ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...