lt3593 Linear Technology Corporation, lt3593 Datasheet
lt3593
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lt3593 Summary of contents
Page 1
... The LT3593 switches at 1MHz, allowing the use of tiny external components. Constant frequency switching re- sults in low input noise and a small output capacitor. The LT3593 is available in the 6-lead DFN (2mm × 2mm) as well as the 6-lead SOT-23 packages. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. ...
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... TAPE AND REEL LT3593EDC#PBF LT3593EDC#TRPBF LT3593ES6#PBF LT3593ES6#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: For more information on tape and reel specifi cations, go to: ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi ...
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... Note 2: The LTC3593E is guaranteed to meet performance specifi cations from 0°C to 85°C operating junction temperature range. Specifi cations over the –40°C to 85°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. Note 3: Guaranteed by design. LT3593 MIN TYP MAX UNITS 1 μ ...
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... LT3593 TYPICAL PERFORMANCE CHARACTERISTICS Switch Saturation Voltage (V ) CESAT 600 500 100°C 400 25°C 300 –50°C 200 100 0 0 100 200 300 400 500 SWITCH CURRENT (mA) 3593 G01 LED Pin Voltage Drop (V – CAP LED 300 16V CAP 250 100° ...
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... TEMPERATURE (°C) Full-Scale Current vs V CAP 21.0 20.5 20.0 19.5 19 6.0 V (V) CAP LT3593 T = 25°C unless otherwise specifi ed. A Open-Circuit Output Clamp Voltage vs Temperature 3. 5.5 6.0 –50 – TEMPERATURE (°C) 3593 G10 LED Current vs CTRL Strobe ...
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... LT3593 PIN FUNCTIONS (DFN/TSOT) V (Pin 1/Pin 3): Input Supply Pin. Must be locally by- IN passed with a 1μF X5R or X7R type ceramic capacitor. GND (Pin 2/Pin 2): Ground Pin. Connect directly to local ground plane. SW (Pin 6/Pin 4): Switch Pin. Connect inductor between this pin and the V pin ...
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... OPERATION The LT3593 uses a constant frequency, current mode control boost scheme to provide excellent line and load regulation. Operation can be best understood by referring to the Block Diagram in Figure 1. Output Disconnect An internal switch connects between the CAP pin and the LED pin. The top of the LED string is connected to the LED pin ...
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... LT3593. A Schottky diode rated at 400mA to 500mA is suffi cient for most LT3593 applications. Some recommended Schottky diodes are listed in Table 3. ...
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... In the case of an output open circuit, when the LEDs are disconnected from the circuit or the LEDs fail open clamped at 38V. The LT3593 will then switch at a very low frequency to minimize input current. V current during output open circuit are shown in the Typical Performance Characteristics ...
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... LT3593 APPLICATIONS INFORMATION Board Layout Considerations As with all switching regulators, careful attention must be paid to the PCB layout and component placement. To prevent electromagnetic interference (EMI) problems, proper layout of high frequency switching paths is essential. Minimize the length and area of all traces connected to the ...
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... GND C1: TAIYO YUDEN EMK107BJ105MA C2: TAIYO YUDEN GMK316BJ105ML L1: MURATA LQH43CN100 D1: CENTRAL CMDSH05-4 C2 1μ CAP LED 3593 TA02a C2 1μ CAP LED 3593 TA03a LT3593 Conversion Effi ciency 3. LED LED CURRENT (mA) 3593 TA02b Conversion Effi ...
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... L1: MURATA LQH43CN100 D1: CENTRAL CMDSH05-4 Li-Ion Driver for Six White LEDs L1 10μ 1μ CAP LT3593 SHUTDOWN AND CTRL LED CURRENT CONTROL GND C1: TAIYO YUDEN EMK107BJ105MA C2: TAIYO YUDEN GMK316BJ105ML L1: MURATA LQH43CN100 D1: CENTRAL CMDSH05 1μF 3593 TA04a ...
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... CAP LT3593 SHUTDOWN AND CTRL LED CURRENT CONTROL GND C1: TAIYO YUDEN EMK107BJ105MA C2: MURATA GRM31CR71H225KA88 L1: MURATA LQH43CN220 D1: CENTRAL CMDSH05 1μF 3593 TA07a D1 C2 2.2μF 3593 TA08a LT3593 Effi ciency 3. LEDs LED CURRENT (mA) 3593 TA07b Effi ...
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... LT3593 PACKAGE DESCRIPTION 2.50 ±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 Package 6-Lead Plastic DFN (2mm × 2mm) (Reference LTC DWG # 05-08-1703) 0.675 ±0.05 PACKAGE OUTLINE 0.25 ± 0.05 0.50 BSC 1.42 ±0.05 (2 SIDES) 0.56 ± 0.05 (2 SIDES) 2.00 ± ...
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... S6 Package 6-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1636) 1.22 REF 1.50 – 1.75 2.80 BSC 1.4 MIN (NOTE 4) 0.95 BSC 0.80 – 0.90 1.00 MAX 0.09 – 0.20 (NOTE 3) LT3593 2.90 BSC (NOTE 4) PIN ONE ID 0.30 – 0.45 6 PLCS (NOTE 3) 0.01 – 0.10 1.90 BSC S6 TSOT-23 0302 REV B 15 3593f ...
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... LT3593 TYPICAL APPLICATION Li-Ion Driver for Six LEDs L1 10μ 1μ CAP LT3593 SHUTDOWN AND CTRL LED CURRENT CONTROL GND C1: TAIYO YUDEN EMK107BJ105MA C2: TAIYO YUDEN GMK316BJ105ML L1: MURATA LQH43CN100 D1: CENTRAL CMDSH05-4 RELATED PARTS PART NUMBER DESCRIPTION LT1932 Constant Current, 1.2MHz, High Effi ciency White LED ...