LT3693EMSE-PBF LINER [Linear Technology], LT3693EMSE-PBF Datasheet
LT3693EMSE-PBF
Related parts for LT3693EMSE-PBF
LT3693EMSE-PBF Summary of contents
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FEATURES Wide Input Range: 3.6V to 36V ■ ■ 3.5A Maximum Output Current Adjustable Switching Frequency: 200kHz to 2.4MHz ■ Low Shutdown Current: I < 1μA ■ Q ■ Integrated Boost Diode Synchronizable Between 250kHz to 2MHz ■ Power Good ...
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... LT3693EDD#PBF LT3693EDD#TRPBF LT3693IDD#PBF LT3693IDD#TRPBF LT3693EMSE#PBF LT3693EMSE#TRPBF LT3693IMSE#PBF LT3693IMSE#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. Consult LTC Marketing for information on non-standard lead based fi nish parts. ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T noted. (Note 2) PARAMETER Minimum Bias Voltage (BD Pin) Feedback Voltage FB Pin Bias Current (Note 3) FB Voltage Line Regulation Error Amp g m Error Amp Gain V Source ...
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LT3693 W U TYPICAL PERFOR A CE CHARACTERISTICS Effi ciency 100 V = 12V 34V 24V OUT L = 4.7μ 600kHz 50 0 0.5 ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Feedback Voltage 840 820 800 780 760 –50 – 100 125 TEMPERATURE (°C) 3693 G12 Minimum Switch On-Time 140 120 100 –50 –25 0 ...
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LT3693 W U TYPICAL PERFOR A CE CHARACTERISTICS Minimum Input Voltage 6.5 6.0 5.5 5 OUT 4 4 600kHz 4 100 1000 10000 LOAD CURRENT ...
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CTIO S BD (Pin 1): This pin connects to the anode of the boost Schottky diode. BD also supplies current to the internal regulator. BOOST (Pin 2): This pin is used to provide a drive ...
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LT3693 OPERATION The LT3693 is a constant frequency, current mode step- down regulator. An oscillator, with frequency set by RT, enables an RS fl ip-fl op, turning on the internal power switch. An amplifi er and comparator monitor the current ...
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APPLICATIONS INFORMATION FB Resistor Network The output voltage is programmed with a resistor divider between the output and the FB pin. Choose the 1% resis- tors according to: ⎛ ⎞ V OUT = – 1 ⎝ ...
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LT3693 APPLICATIONS INFORMATION operating input voltage. Conversely, a lower switching frequency will be necessary to achieve safe operation at high input voltages. If the output is in regulation and no short-circuit, start- up, or overload events are expected, then input ...
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APPLICATIONS INFORMATION Of course, such a simple design guide will not always re- sult in the optimum inductor for your application. A larger value inductor provides a slightly higher maximum load current and will reduce the output voltage ripple. If ...
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LT3693 APPLICATIONS INFORMATION Table 2. Capacitor Vendors VENDOR PHONE Panasonic (714) 373-7366 Kemet (864) 963-6300 Sanyo (408) 749-9714 Murata (408) 436-1300 AVX Taiyo Yuden (864) 963-6300 When choosing a capacitor, look carefully through the data sheet to fi nd out ...
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APPLICATIONS INFORMATION Frequency Compensation The LT3693 uses current mode control to regulate the output. This simplifi es loop compensation. In particular, the LT3693 does not require the ESR of the output capacitor for stability, so you are free to use ...
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LT3693 APPLICATIONS INFORMATION BD BOOST V V LT3693 GND 4.7 F (4a) For V > 2.8V OUT BD BOOST LT3693 GND 4.7 F (4b) For 2.5V < V OUT BD ...
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APPLICATIONS INFORMATION The minimum operating voltage of an LT3693 application is limited by the minimum input voltage (3.6V) and by the maximum duty cycle as outlined in a previous section. For proper startup, the minimum input voltage is also limited ...
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LT3693 APPLICATIONS INFORMATION Shorted and Reversed Input Protection If the inductor is chosen so that it won’t saturate exces- sively, an LT3693 buck regulator will tolerate a shorted output. There is another situation to consider in systems where the output ...
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APPLICATIONS INFORMATION Hot Plugging Safely The small size, robustness and low impedance of ceramic capacitors make them an attractive option for the input bypass capacitor of LT3693 circuits. However, these capaci- tors can cause problems if the LT3693 is plugged ...
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LT3693 APPLICATIONS INFORMATION High Temperature Considerations The PCB must provide heat sinking to keep the LT3693 cool. The Exposed Pad on the bottom of the package must be soldered to a ground plane. This ground should be tied to large ...
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TYPICAL APPLICATIONS V IN 4.6V TO 36V 4.7 F 680pF D: ON SEMI MBRA340 L: NEC MPLC0730L3R3 36V 4.7 F 680pF D1: ON SEMI MBRA340 D2: MBR0540 L: NEC MPLC0730L3R3 3.3V Step-Down Converter ...
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LT3693 TYPICAL APPLICATIONS V IN 8.6V TO 22V TRANSIENT TO 36V 4.7 F 680pF D: ON SEMI MBRA340 L: NEC MPLC0730L2R2 V IN 15V TO 36V 10 F 680pF D: ON SEMI MBRA340 L: NEC MBP107558R2P 20 5V, 2MHz Step-Down ...
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TYPICAL APPLICATIONS V IN 3.6V TO 27V 4.7 F 680pF D: ON SEMI MBRA340 L: NEC MPLC0730L3R3 1.8V Step-Down Converter OFF RUN/SS BOOST LT3693 RT 16.9k PG SYNC FB 78.7k GND f = ...
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LT3693 PACKAGE DESCRIPTION 3.50 ±0.05 1.65 ±0.05 2.15 ±0.05 (2 SIDES) 0.25 ± 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS PIN 1 TOP MARK (SEE NOTE Package 10-Lead Plastic DFN (3mm × 3mm) (Reference LTC DWG # ...
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PACKAGE DESCRIPTION 2.794 ± 0.102 (.110 ± .004) 5.23 (.206) MIN 0.305 ± 0.038 (.0120 ± .0015) TYP RECOMMENDED SOLDER PAD LAYOUT 0.254 (.010) GAUGE PLANE 0.18 (.007) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION ...
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LT3693 U TYPICAL APPLICATIO V IN 3.6V TO 27V 4.7 F RELATED PARTS PART NUMBER DESCRIPTION LT1766 60V, 1. 200kHz, High Effi ciency Step-Down DC/DC Converter OUT LT1933 500mA (I ), 500kHz Step-Down Switching Regulator in SOT-23 OUT ...