LTC4009IUF-1#TRPBF Linear Technology, LTC4009IUF-1#TRPBF Datasheet

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... Portable Instruments n Battery Backup Systems n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 5723970. Typical applicaTion ...

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... LTC4009CUF-2#PBF LTC4009CUF-2#TRPBF LTC4009IUF#PBF LTC4009IUF#TRPBF LTC4009IUF-1#PBF LTC4009IUF-1#TRPBF LTC4009IUF-2#PBF LTC4009IUF-2#TRPBF Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: ...

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T SYMBOL PARAMETER Charge Voltage Regulation V V Accuracy (See Test Circuits) TOL BAT I V Input Bias Current VFB FB R FBDIV On-Resistance ON I FBDIV Output Leakage Current LEAK-FBDIV V ...

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LTC4009 LTC4009-1/LTC4009-2 elecTrical characTerisTics temperature range, otherwise specifications are at T SYMBOL PARAMETER V SHDN Input Voltage High IH R SHDN Pull-Down Resistance IN I DCIN Shutdown Current DCS I CLP Shutdown Current CLPS I BAT Leakage Current LEAK-BAT I ...

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TesT circuiTs LTC4009 FROM ICL (CLP = CLN) – – EA – + 1.2085V PROG 1.2085V TARGET LTC1055 – Typical perForMance characTerisTics (T = 25°C unless otherwise noted SSB44 IHLP-2525 6.8µH) ...

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LTC4009 LTC4009-1/LTC4009-2 Typical perForMance characTerisTics (T = 25°C unless otherwise noted SSB44 IHLP-2525 6.8µ Battery Load Dump 2A 1A 12. RECONNECT LOAD DISCONNECT STATE 4009 G06 CLP = 20V TIME (1ms/DIV) V ...

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Typical perForMance characTerisTics (T = 25°C unless otherwise noted SSB44 IHLP-2525 6.8µ PWM Frequency vs Charge Current 600 500 400 CLP = 15V R = 33m 300 SENSE R = 3.01k IN 200 100 ...

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LTC4009 LTC4009-1/LTC4009-2 pin FuncTions FVS0 (Pin 9, LTC4009-1/LTC4009-2): Battery Voltage Select Input (LSB). This pin is one of two pins used on the LTC4009-1 or LTC4009-2 to select one of four preset battery voltages. Selection is done by connecting to ...

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DiagraM (LTC4009) DCIN 3 CLP 2 CURRENT CLN 1 ICL 4 CHRG C/10 8 DETECTION OSCILLATOR BAT 11 CHARGE FBDIV 9 DCDIV SHUTDOWN SHUTDOWN 5 CONTROL ACP 7 SHDN 6 BOOST AND OV DETECTION INPUT LIMIT ...

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LTC4009 LTC4009-1/LTC4009-2 block DiagraM (LTC4009-1/LTC4009-2) DCIN 3 CLP 2 CURRENT CLN 1 ICL 4 CHRG C/10 8 DETECTION FVS1 10 OUTPUT FVS0 9 VOLTAGE SELECT BAT 11 OSCILLATOR DCDIV SHUTDOWN SHUTDOWN 5 CONTROL ACP 7 SHDN 6 0 BOOST AND ...

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Overview The LTC4009 is a synchronous step-down (buck) current mode PWM battery charger controller. The maximum charge current is programmed by the combination of a charge current sense resistor (R SENSE resistors (R , Figure 1), and a programming ...

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LTC4009 LTC4009-1/LTC4009-2 operaTion LTC4009 CLP CLOCK 2 OSCILLATOR BAT 11 Charge Current Monitoring When the LTC4009 is charging, the voltage on the PROG pin varies in direct proportion to the charge current. Referring to Figure 1, the nominal PROG voltage ...

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Table 1 summarizes the state of the three indicator outputs as a function of LTC4009 operation. Table 1. LTC4009 Open-Drain Indicator Outputs ACP CHRG ICL CHARGER STATE Off Off Off ...

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LTC4009 LTC4009-1/LTC4009-2 operaTion PWM Watchdog Timer As input and output conditions vary, the LTC4009 may need to utilize PWM duty cycles approaching 100%. In this case, operating frequency may be reduced well below 550kHz. An internal watchdog timer observes the ...

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Programming Charge Current The formula for charge current is:  2085 . • –   CHRG R R SENSE PROG The LTC4009 operates best with 3.01k input resistors, although ...

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LTC4009 LTC4009-1/LTC4009-2 applicaTions inForMaTion LTC4009 PROG 13 R PROG C PROG 5V Q1 2N7002 0V Figure 4. Programming PWM Current compensation capacitance connected to ITH to maintain stability or prevent large current overshoot during start- up. Selecting a higher Q1 ...

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Programming LTC4009-1/LTC4009-2 Output Voltage The LTC4009-1/LTC4009-2 feature precision internal bat- tery voltage feedback resistor taps configured for common lithium-ion voltages. All that is required to program the desired voltage is proper pin programming of FVS0 and FVS1 as ...

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LTC4009 LTC4009-1/LTC4009-2 applicaTions inForMaTion limit value. The second is to make the input current limit value programmable. The overall accuracy of this circuit needs to be better than the power source current tolerance or be margined such that the worse-case ...

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greater than 26.7k, the actual level at which PROG low charge current is detected will be less than C/10. The highest value of R that can be used while reliably PROG indicating low charge current ...

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LTC4009 LTC4009-1/LTC4009-2 applicaTions inForMaTion Input and Output Capacitors In addition to typical input supply bypassing (0.1µF) on DCIN, the relatively high ESR of aluminum electrolytic capacitors is helpful for reducing ringing when hot plug- ging the charger to the AC ...

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The LTC4009 limits maximum instantaneous peak inductor current during every PWM cycle. To avoid unstable switch waveforms, the ripple current must satisfy:   150 mV ∆I < 2 • – I     L MAX ...

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LTC4009 LTC4009-1/LTC4009-2 applicaTions inForMaTion where Q is the rated gate charge of the top external NFET G with V = 4.5V. The maximum average diode current is GS then given by • 665kHz improve ...

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The LTC4009 uses an improved adaptive TGATE and BGATE drive that is insensitive to MOSFET inertial delays avoid overlap conduction losses. Switching d(ON/OFF) characteristics from power MOSFET data sheets apply only to a specific test ...

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LTC4009 LTC4009-1/LTC4009-2 applicaTions inForMaTion PCB Layout Considerations To prevent magnetic and electrical field radiation and high frequency resonant problems, proper layout of the components connected to the LTC4009 is essential. Refer to Figure 12. For maximum efficiency, the switch node ...

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If possible, place all the parts listed above on the same PCB layer. 11. Copper fills or pours are good for all power connections except as noted above in Rule 3. Copper planes on multiple layers can ...

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LTC4009 LTC4009-1/LTC4009-2 package DescripTion 4.50 ± 0.05 3.10 ± 0.05 2.45 ± 0.05 2.00 REF 2.45 ± 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED 4.00 ± 0.10 PIN 1 TOP MARK ...

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... I-Grade Parts Added. Reflected Throughout the Data Sheet 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. ...

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... THE COMBINATION OF R14 AND Q4 10µH R11 50m + D2, D4: MBR230LSFT1 12.6V D3:CMDSH-3 Li-Ion Q1: 2N7002 BATTERY Q2, Q3: Si7212DN OR SiA914DJ OR Si4816BDY (OMIT D4) 4009 TA02 L1: IHLP-2525CZER100M11 *SEE TGATE BOOST SUPPLY IN APPLICATIONS INFORMATION package TM LT 0610 REV D • PRINTED IN USA  LINEAR TECHNOLOGY CORPORATION 2008 4009fd ...