ltc3528-2 Linear Technology Corporation, ltc3528-2 Datasheet
ltc3528-2
Related parts for ltc3528-2
ltc3528-2 Summary of contents
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... Additional features include a low shutdown current, open-drain power good output, short-circuit protection and thermal overload protection. The LTC3528-2 is offered in an 8-lead 2mm × 3mm × 0.75mm DFN package. L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation ...
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... LTC3528-2 ABSOLUTE MAXIMUM RATINGS (Note 1) V Voltage ................................................... –0. Voltage DC ............................................................ –0. Pulsed < 100ns ........................................ –0. SHDN, FB Voltage ........................................ –0. ............................................................. –0. OUT PGOOD ......................................................... –0. Operating Junction Temperature Range (Notes 2, 5) ............................................ –40°C to 125°C Junction Temperature ........................................... 125°C Storage Temperature Range ................... – ...
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... Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC3528-2 is tested under pulsed load conditions such that T ≈ The LTC3528E-2 is guaranteed to meet specifications from 0°C to ...
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... LTC3528-2 TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Load Current and V for V = 3.3V IN OUT 100 EFFICIENCY POWER 60 LOSS 0.01 0 100 1000 LOAD CURRENT (mA) 35282 G02 Maximum Output Current 800 700 600 500 400 300 200 V = 1.8V OUT ...
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... TEMPERATURE (˚C) Output Voltage vs Load Current for V = 3.3V OUT 0. 1.2V IN 0.15 0.10 0.05 0 –0.05 –0.10 –0.15 –0.20 600 0 50 100 150 LOAD CURRENT (mA) LTC3528 25°C unless otherwise noted DS(ON) OUT 450 400 350 300 PMOS 250 200 NMOS 150 100 4.5 5 1.5 2 2.5 3 3.5 V (V) ...
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... LTC3528-2 TYPICAL PERFORMANCE CHARACTERISTICS Fixed Frequency V Ripple and OUT Inductor Current Waveforms V OUT 20mV/DIV I L 200mA/DIV 35282 G19 V = 1.2V 500ns/DIV 3.3V OUT C = 10µF OUT C = 33pF 100mA OUT L = 2.2µH Load Step Response (Fixed Frequency, 3.6V to 5V) V OUT 100mV/DIV LOAD CURRENT 200mA/DIV V = 3.6V 20µs/DIV ...
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... IN 1µF ceramic decoupling capacitor from this pin to ground. GND (Exposed Pad Pin 9): The exposed pad must be soldered to the PCB ground plane. It serves as another ground connection and as a means of conducting heat away from the die. LTC3528-2 to minimize EMI. IN 35282fa 7 ...
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... LTC3528-2 BLOCK DIAGRAM 4.7µF SHDN 1 SHUTDOWN 4M V REF UVLO START-UP 2MHz OSC PGOOD REF – FB THERMAL SHUTDOWN PGND 2.2µ ANTI-RING V OUT V SEL V BEST V B GATE DRIVERS AND ANTI-CROSS SHUTDOWN CONDUCTION Σ PK COMP V REF – ...
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... LTC3528-2 achieves high efficiency over a wide range of load current. The LTC3528-2 features continuous 2MHz PWM operation over a wide range of load current. At very light loads, the LTC3528-2 will enter Burst Mode operation to maintain high efficiency. Operation can be best understood by referring to the Block Diagram. ...
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... L and pin) is low energy, but can cause EMI radiation. Output Disconnect The LTC3528-2 is designed to allow true output discon- nect by eliminating body diode conduction of the internal P-channel MOSFET rectifier. This allows for V zero volts during shutdown, drawing no current from the input source ...
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... Single Cell to 5V Step-Up Applications Due to the high inductor current slew rate in applications boosting to 5V from a single cell (alkaline, NiCd or NiMH), the LTC3528-2 may not enter Burst Mode operation at in- put voltages below 1.5V. For single cell to 5V applications requiring Burst Mode operation, the 1MHz LTC3528 is recommended ...
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... PGND rent without saturating. Molded chokes and some chip inductors usually do not have enough core area to support SW the peak inductor currents of 1.5A seen on the LTC3528-2. 35282 F02 MULTIPLE VIAS To minimize radiated noise, use a shielded inductor. See TO GROUND PLANE Table 1 for suggested components and suppliers ...
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... FB PGOOD OFF ON SHDN GND The internal loop compensation of the LTC3528-2 is de- signed to be stable with output capacitor values of 10µF or greater. Although ceramic capacitors are recommended, low ESR tantalum capacitors may be used as well. A small ceramic capacitor in parallel with a larger tantalum capacitor may be used in demanding applications which have large load transients ...
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... V IN 0.88V TO 1.6V 475k LTC3528-2 4.7µF PGOOD SHDN OFF ON 2.2µ 4.7µF LTC3528-2 PGOOD SHDN 1 Cell to 3.3V 2.2µ OUT 0.88V TO 1.6V 4.7µF LTC3528-2 PGOOD FB SHDN OFF ON GND OUT1 1.8V V OUT 250mA 68pF 499k FB 10µF 1M GND 0.5V/DIV SW V OUT2 3V V OUT ...
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... OFF ON GND V OUT 3.3V 400mA 499k 68pF 10µF 287k 35282 TA05a V OUT 5V 300mA 1M 68pF 22µF 316k 35282 TA06a V OUT 5V 400mA 1M 68pF 316k 35282 TA07a LTC3528-2 Efficiency 100 1000 0.01 100 LOAD CURRENT (mA) 35282 TA05b Efficiency ...
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... LTC3528-2 PACKAGE DESCRIPTION 0.61 ±0.05 (2 SIDES) 2.55 ±0.05 1.15 ±0.05 0.25 ± 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS PIN 1 BAR TOP MARK (SEE NOTE 6) 0.200 REF NOTE: 1. DRAWING CONFORMS TO VERSION (WECD-1) IN JEDEC PACKAGE OUTLINE M0-229 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH ...
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... Operations section update to Shutdown 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. LTC3528-2 PAGE NUMBER 2 2,3 ...
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... LTC3528-2 RELATED PARTS PART NUMBER DESCRIPTION LTC3528/LTC3528 1MHz Synchronous Step-Up DC/DC Converters SW with Output Disconnect LTC3528B 2MHz Synchronous Step-Up DC/DC Converter SW with Output Disconnect LTC3400/LTC3400B 600mA (I ), 1.2MHz, Synchronous Step-Up SW DC/DC Converters LTC3421 3MHz, Synchronous Step-Up DC/DC Converter SW with Output Disconnect LTC3422 1. 3MHz Synchronous Step-Up DC/DC ...