ltc4058x-4.2 Linear Technology Corporation, ltc4058x-4.2 Datasheet
ltc4058x-4.2
Related parts for ltc4058x-4.2
ltc4058x-4.2 Summary of contents
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... BSENSE LTC4058-4.2 CHRG ACPR EN PROG GND 1 F LTC4058-4.2/LTC4058X-4.2 Li-Ion Battery Charger with Thermal Regulation in DFN DESCRIPTIO ® The LTC 4058 is a complete constant-current/constant- voltage linear charger for single cell lithium-ion batteries. Its DFN package and low external component count make the LTC4058 ideally suited for portable applications ...
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... LTC4058-4.2/LTC4058X-4 ABSOLUTE AXI U RATI GS (Note 1) Input Supply Voltage (V ) ....................... –0.3V to 10V CC PROG ............................................. – 0. BAT, BSENSE .............................................. –0. CHRG, ACPR, EN ...................................... –0.3V to 10V BAT Short-Circuit Duration .......................... Continuous BAT Pin Current ........................................................ 1A PROG Pin Current ................................................... 1mA Maximum Junction Temperature .......................... 125 C Operating Temperature Range (Note 2) .. – Storage Temperature Range ................. – ...
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... R = 10k PROG 1.005 1.000 0.995 0.990 0.985 4 4.5 5 5.5 6 6.5 V (V) CC 405842 G01 LTC4058-4.2/LTC4058X-4.2 The denotes specifications which apply over the full operating = 5V, unless otherwise noted CONDITIONS =1000V/R BAT BAT PROG V High to Low BSENSE I Drops Below I ...
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... LTC4058-4.2/LTC4058X-4 TYPICAL PERFOR A CE CHARACTERISTICS Regulated Output (Float) Voltage vs Charge Current 4. 4. 1.25k PROG 4.22 4.20 4.18 4.16 4.14 4.12 4.10 0 100 200 300 400 500 600 700 I (mA) BAT 405842 G04 CHRG Pin I-V Curve (Pull-Down State – ...
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... BAT (Pin 2): Charge Current Output. Provides charge current to the battery from the internal P-channel MOSFET. CHRG (Pin 3): Charge Status Open-Drain Output. When the battery is charging, the CHRG pin is pulled low by an LTC4058-4.2/LTC4058X-4.2 Charge Current vs Ambient Temperature 600 ONSET OF THERMAL REGULATION ...
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... LTC4058-4.2/LTC4058X-4 CTIO S the voltage on this pin can be used to measure the charge current using the following formula • 1000 BAT PROG PROG This pin is clamped to approximately 2.4V. Driving this pin to voltages beyond the clamp voltage can draw currents as high as 1.5mA. ...
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... PROG I • 1000 BAT R PROG LTC4058-4.2/LTC4058X-4.2 Charge Termination The charge cycle terminates when the charge current falls to 10% the programmed value after the final float voltage is reached. This condition is detected by using an internal, filtered comparator to monitor the PROG pin. When the ...
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... LTC4058-4.2/LTC4058X-4.2 U OPERATIO POWER ON TRICKLE CHARGE EN DRIVEN LOW OR 1/10TH FULL CURRENT UVLO CONDITION STOPS CHRG: STRONG SHUTDOWN MODE CHARGE MODE I DROPS TO < FULL CURRENT CHRG: Hi-Z CHRG: STRONG STANDBY MODE NO CHARGE CURRENT EN DRIVEN HIGH CHRG: Hi-Z OR UVLO CONDITION 405842 F01 Figure 1. State Diagram of a Typical Charge Cycle ...
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... Average, rather than instantaneous charge current may be of interest to the user. For example switching power supply operating in low current mode is connected in parallel with the battery, the average current being pulled LTC4058-4.2/LTC4058X-4 out of the BAT pin is typically of more interest than the instantaneous current pulses ...
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... LTC4058-4.2/LTC4058X-4 APPLICATIO S I FOR ATIO The LTC4058 can be used above 52 C ambient but the charge current will be reduced from 800mA. The approxi- mate current at a given ambient temperature can be approximated by: 120 C T – BAT V – V • CC BAT JA Using the previous example with an ambient temperature ...
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... 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. LTC4058-4.2/LTC4058X-4 Figure 4. Low Loss Input Reverse Polarity Protection ...
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... LTC4058-4.2/LTC4058X-4.2 U TYPICAL APPLICATIO S Full Featured Single Cell Li-Ion Charger 500mA ACPR BAT 3 1 CHRG BSENSE LTC4058-4.2 4 PROG GND WALL ADAPTER USB POWER RELATED PARTS PART NUMBER DESCRIPTION LTC1732 Lithium-Ion Linear Battery Charger Controller ...