ltc3526lb-2 Linear Technology Corporation, ltc3526lb-2 Datasheet
ltc3526lb-2
Related parts for ltc3526lb-2
ltc3526lb-2 Summary of contents
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... The LTC3526L-2 features Burst Mode operation at light load conditions allowing it to maintain high efficiency over a wide range of load. The LTC3526LB-2 features fixed frequency operation for low noise applications. Anti-ring circuitry reduces EMI by damping the inductor in discon- tinuous mode. Additional features include a low shutdown current of under 1µ ...
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... LTC3526L-2/LTC3526LB-2 absoluTe MaxiMuM raTings (Note 1) V Voltage ................................................... –0. Voltage DC ............................................................ –0. Pulsed <100ns ......................................... –0. SHDN, FB Voltage ........................................ –0. ............................................................. –0. OUT Operating Temperature Range (Notes 2, 5) ..............................................–40°C to 85°C Storage Temperature Range .................. –65°C to 150°C ...
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... IN IN 3526lb2 G04 LTC3526L-2/LTC3526LB-2 Note 4: Current measurements are made when the output is not switching. Note 5: This IC includes overtemperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125°C when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may result in device degradation or failure ...
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... LTC3526L-2/LTC3526LB-2 Typical perForMance characTerisTics Start-Up Delay Time 100 3.0 4.5 1.0 1.5 2.0 2.5 3.5 4.0 V (V) IN 3526lb2 G07 Burst Mode Threshold Current vs V (LTC3526L- 3.3V OUT C = 10µF OUT 2.2µH 40 LEAVE BURST 30 20 ENTER BURST 10 0 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 V (V) IN 3526lb2 G08c ...
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... LOAD (mA) 3526lb2 G23 Fixed Frequency Switching Waveform and V Ripple OUT SW PIN 2V/DIV V OUT 20mV/DIV AC-COUPLED 3526lb2 V = 1.2V 200ns/DIV 3.3V AT 100mA OUT C = 4.7µF OUT LTC3526L-2/LTC3526LB-2 Start-Up Voltage vs Temperature 0.80 0.75 1mA LOAD 0.70 0.65 NO LOAD 0.60 0.55 0.50 100 – TEMPERATURE (°C) G13 Load Regulation 0 3.3V OUT ...
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... LTC3526L-2/LTC3526LB-2 Typical perForMance characTerisTics Load Step Response (from Burst Mode Operation) (LTC3526L-2) V OUT 100mV/DIV AC-COUPLED LOAD CURRENT 50mA/DIV V = 3.6V 100µs/DIV OUT 20mA TO 170mA STEP C = 10µF OUT Load Step Response (Fixed Frequency) V OUT 100mV/DIV AC-COUPLED LOAD CURRENT 50mA/DIV ...
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... THERMAL SHUTDOWN operaTion (Refer to Block Diagram) The LTC3526L-2/LTC3526LB-2 are 2MHz synchronous boost converters housed in a 6-lead 2mm × 2mm DFN package. With a guaranteed ability to start up and oper- ate from inputs less than 0.8V, this device features fixed frequency, current mode PWM control for exceptional line and load regulation ...
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... SHDN pin above 0.8V. Although SHDN can be driven above V (up to the absolute maximum rating) without damage, the LTC3526L-2/LTC3526LB-2 have a proprietary test mode that may be engaged if SHDN is held in the range of 0. higher than the greater of V the test mode is engaged, normal PWM switching action is interrupted, which can cause undesirable operation in some applications ...
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... IN Burst Mode operation is inhibited during start-up and soft- start and until V The LTC3526LB-2 features continuous PWM operation at 2MHz. At very light loads, the LTC3526LB-2 will exhibit pulse-skipping operation. . The load current at which Burst Mode IN and FB. OUT is at least 0.24V greater than V OUT ...
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... OUT that this defeats the output disconnect and short-circuit protection features. PCB LAYOUT GUIDELINES The high speed operation of the LTC3526L-2/LTC3526LB-2 demands careful attention to board layout. A careless layout will result in reduced performance. Figure 2 shows the recommended component placement. A large ground pin copper area will help to lower the die temperature. A multilayer board with a separate ground plane is ideal, but not absolutely necessary ...
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... Y5V types should not be used. The internal loop compensation of the LTC3526L-2/ LTC3526LB-2 are designed to be stable with output ca- pacitor values of 4.7µF or greater (without the need for any external series resistor). Although ceramic capacitors are recommended, low ESR tantalum capacitors may be used as well ...
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... IN OUT 0.8V TO 1.6V 1µF LTC3526L-2 OFF ON SHDN FB GND * FDK MIPWT3226D2R2 ** MURATA GRM219R60J106KE19D 2.2µ OUT 0.8V TO 1.6V 1µF LTC3526LB-2 OFF ON SHDN FB GND *SUMIDA CDRH2D11NP-2R2N 2.2µ OUT 0.8V TO 1.6V 1µF LTC3526L-2 OFF ON SHDN FB GND *TAIYO-YUDEN NR3015T2R2M 1-Cell to 1.8V Converter with <1mm Maximum Height ...
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... OFF ON SHDN FB GND *COILCRAFT LPS4018-332ML 3.6µ OUT 2.7V TO 4.3V 1µF LTC3526L-2 SHDN OFF ON FB GND *WURTH 744031003 LTC3526L-2/LTC3526LB-2 2-Cell to 3.3V V OUT 3.3V 200mA 1.78M 33pF 4.7µF 1M 3526lb2 TA05a 2-Cell OUT 5V 150mA 3.24M 33pF 10µF 1.02M 3526lb2 TA06a Li-Ion to 5V ...
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... LTC3526L-2/LTC3526LB-2 package DescripTion 2.55 0.05 0.61 0.05 1.15 0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS PIN 1 BAR TOP MARK (SEE NOTE 6) 0.200 REF DC Package 6-Lead Plastic DFN (2mm × 2mm) (Reference LTC DWG # 05-08-1703 Rev B) 0.70 0.05 PACKAGE OUTLINE 0.25 0.05 0.50 BSC 1.42 0.05 (2 SIDES 0.125 TYP 0.56 0.05 (2 SIDES) 2.00 0.10 (4 SIDES 0.05 TYP 0.75 0.05 BOTTOM VIEW—EXPOSED PAD 0.00 – ...
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... Updated Related Parts 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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTC3526L-2/LTC3526LB-2 PAGE NUMBER 3 6 ...
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... LTC3526L-2/LTC3526LB-2 Typical applicaTion 5V USB V BATT 1.8V TO 3.2V relaTeD parTs PART NUMBER DESCRIPTION LTC3526/LTC3526B 500mA, 1MHz/2.2MHz, Synchronous Step-Up DC/DC LTC3526-2/LTC3526B-2 Converters with Output Disconnect LTC3526L/LTC3526LB LTC3525L-3 400mA Micropower Synchronous Step-Up DC/DC Converter with Output Disconnect LTC3525-3 400mA Micropower Synchronous Step-Up DC/DC LTC3525-3.3 Converter with Output Disconnect ...