LTC3736EGN-1 Linear Technology, LTC3736EGN-1 Datasheet
LTC3736EGN-1
Specifications of LTC3736EGN-1
Related parts for LTC3736EGN-1
LTC3736EGN-1 Summary of contents
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... One or Two Lithium-Ion Powered Devices ■ Notebook and Palmtop Computers, PDAs ■ Portable Instruments Distributed DC Power Systems ■ , LTC and LT are registered trademarks of Linear Technology Corporation trademark of Linear Technology Corporation. SENSE Protected by U.S. Patents including 5481178, 5929620, 6144194, 6580258, 6304066, 6611131, 6498466. U ...
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... TG1, TG2, BG1, BG2 Peak Output Current (<10µs) ..... 1A Operating Temperature Range (Note 2) ... –40°C to 85°C Storage Temperature Range .................. –65°C to 125°C + 0.3V) Junction Temperature (Note 3) ............................ 125°C IN Lead Temperature (Soldering, 10 sec 10V Max (LTC3736EGN-1) .................................................. 300° ORDER PART NUMBER SW1 LTC3736EUF-1 ...
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ELECTRICAL CHARACTERISTICS range, otherwise specifications are at T PARAMETER Output Voltage Load Regulation V Input Current FB1,2 TRACK Input Current Overvoltage Protect Threshold Overvoltage Protect Hysteresis Top Gate (TG) Drive 1, 2 Rise Time Top Gate (TG) Drive 1, 2 ...
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LTC3736 TYPICAL PERFOR A CE CHARACTERISTICS Efficiency and Power Lost vs Load Current 10 FIGURE 13 CIRCUIT 0.1 0. 2.5V OUT V = 1.8V OUT 0.001 1 10 100 1000 10000 ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Maximum Current Sense Voltage vs I Pin Voltage TH 100 –20 0 VOLTAGE (V) TH 37361 G09 Regulated Feedback Voltage vs Temperature 0.609 0.607 ...
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LTC3736 TYPICAL PERFOR A CE CHARACTERISTICS Shutdown Quiescent Current vs Input Voltage 20 RUN/ INPUT VOLTAGE ( ...
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CTIO S (UF/GN Package) TG1/TG2 (Pins 17, 15/Pins 20, 18): Top (PMOS) Gate Drive Output. These pins drive the gates of the external P-channel MOSFETs. These pins have an output swing from PGND to + ...
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LTC3736 CTIO AL DIAGRA CLK1 S R SLOPE1 – ICMP + IPROG1 SKIP1 OV1 8 W (Controller 1) RS1 Q SWITCHING LOGIC ANTISHOOT AND THROUGH OV1 BLANKING SENSE1 CIRCUIT SC1 SKIP1 IREV1 SW1 + SENSE1 SHDN + ...
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CTIO AL DIAGRA CLK2 R SLOPE2 – ICMP + SKIP2 OV2 W (Controller 2) RS2 S Q SWITCHING LOGIC ANTISHOOT AND THROUGH OV2 BLANKING CIRCUIT SC2 SKIP2 IREV2 SW2 + SENSE2 SHDN + EAMP – – + ...
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LTC3736-1 U OPERATIO (Refer to Functional Diagram) Main Control Loop The LTC3736-1 uses a current mode architecture with the two controllers operating 180 degrees out of phase. During normal operation, the top external P-channel power MOSFET is turned on when ...
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U OPERATIO (Refer to Functional Diagram) operation enabled) with 1A. Note the significant reduction in peak output noise (>20dBm). Short-Circuit Protection When an output is shorted to ground (V switching frequency of that controller is ...
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LTC3736-1 U OPERATIO (Refer to Functional Diagram) The FREQ pin can be floated, tied to V select 550kHz, 750kHz or 300kHz respectively. The selection of switching frequency is a tradeoff between efficiency and component size. Low frequency operation increases efficiency ...
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U OPERATIO (Refer to Functional Diagram the same time, causing current pulses twice the amplitude of those from a single regulator to be drawn from the input capacitor. These large amplitude pulses increase the total ...
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LTC3736 APPLICATIO S I FOR ATIO The typical LTC3736-1 application circuit is shown in Figure 13. External component selection for each of the LTC3736-1’s controllers is driven by the load requirement and begins with the selection of the ...
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U U APPLICATIO S I FOR ATIO 2.0 1.5 1.0 0.5 0 – JUNCTION TEMPERATURE (°C) Figure Temperature DS(ON) The MOSFET power dissipations at maximum output current are OUT P • I ...
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... This results in an abrupt increase in No Yes inductor ripple current and consequent output voltage No ripple. Do not allow the core to saturate! No Burst Mode is a registered trademark of Linear Technology Corporation. No Kool Mµ registered trademark of Magnetics, Inc. Yes directly determine the OSC V V – ...
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U U APPLICATIO S I FOR ATIO Molypermalloy (from Magnetics, Inc very good, low loss core material for toroids, but it is more expensive than ferrite. A reasonable compromise from the same manufacturer is Kool Mµ. Toroids are ...
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LTC3736 APPLICATIO S I FOR ATIO where f is the operating frequency, C capacitance and I is the ripple current in the induc- RIPPLE tor. The output ripple is highest at maximum input voltage since I increases with ...
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U U APPLICATIO S I FOR ATIO The ramp time for V to rise from 0V to its final value OUT2 is TRACKA t t • • ...
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LTC3736 APPLICATIO S I FOR ATIO change as the supply is reduced down to 2.4V. Also shown is the effect REF Minimum On-Time Considerations Minimum on-time the smallest amount of time ON(MIN) ...
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... Ideally, the drains of the P- and N-channel FETs should be connected close to one another with an input capacitor placed across the FET sources . No regulator can (from the P-channel source to the N-channel source) right OUT C OUT1 LTC3736EGN SENSE1 SW1 2 23 PGND ...
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LTC3736 APPLICATIO S I FOR ATIO at the FETs better to have two separate, smaller valued input capacitors (e.g., two 10µF—one for each channel) than have a single larger valued capacitor (e.g., 22µF) ...
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U TYPICAL APPLICATIO 100pF C ITH1 R ITH1 220pF 15k 10Ω VIN C IN 10µF ×2 C ITH2 C 220pF VIN 1µ 10nF ITH2B 100pF R FB2A 453k Figure 13. ...
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LTC3736-1 U TYPICAL APPLICATIO S R 59k C ITH1A 47pF C ITH1 R 470pF ITH1 22k V IN 3.3V R 10Ω VIN C IN 22µF C ITH2 C 470pF VIN 1µ 10nF ITH2A 47pF R FB2A 59k ...
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... SSDIS MP1 1 24 ITH1 + SW1 SENSE1 2 23 IPRG1 PGND BG1 FB1 SSDIS TH1 5 20 2200pF IPRG2 TG1 6 19 FREQ PGND 18 7 TG2 SGND LTC3736EGN RUN/ BG2 12 15 PGND PGOOD SENSE2 FB2 11 MP2 I TH2 ITH2 TRACK SW2 15k FB2B TRACKA TRACKB 118k 590Ω ...
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LTC3736-1 PACKAGE DESCRIPTIO 4.50 ± 0.05 2.45 ± 0.05 (4 SIDES) 3.10 ± 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS PIN 1 TOP MARK (NOTE 6) NOTE: 1. DRAWING PROPOSED TO BE MADE A JEDEC PACKAGE OUTLINE MO-220 VARIATION (WGGD-X)—TO ...
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... FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 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. ...
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... Switching Regulator LTC3736 Dual, 2-Phase SENSE Tracking LTC3737 Dual, 2-Phase SENSE LTC6902 Multiphase Oscillator with Spread Spectrum Frequency Modulation trademark of Linear Technology Corporation. SENSE Linear Technology Corporation 28 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● FB1A FB1B 59k ...