ISL6292C Intersil Corporation, ISL6292C Datasheet
ISL6292C
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ISL6292C Summary of contents
Page 1
... The ISL6292C can also work with a current-limited adapter to minimize the thermal dissipation, in which case the ISL6292C combines the benefits of both a linear charger and a pulse charger. The ISL6292C features charge current thermal foldback to guarantee safe operation when the printed circuit board is space limited for thermal dissipation ...
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... Trickle Charge Threshold Voltage TEMPERATURE MONITORING Charge Current Foldback Threshold (Note 4) Current Foldback Gain (Note 4) 2 ISL6292C Thermal Information Thermal Resistance (Notes θ 3x3 DFN Package . . . . . . . . . . . . . . Maximum Junction Temperature (Plastic Package 150°C Maximum Storage Temperature Range . . . . . . . . . . . -65°C to 150°C Maximum Lead Temperature (Soldering 10s 300° ...
Page 3
... TIME (Pin 4) The TIME pin determines the oscillation period by connecting a timing capacitor between this pin and GND. The oscillator also provides a time reference for the charger. GND (Pin 5) GND is the connection to system ground. 3 ISL6292C SYMBOL TEST CONDITIONS 15nF OSC TIME Pin Voltage = 0 ...
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... R 1kΩ D Block Diagram VIN C 1 TEMPERATURE MONITORING IREF R CURRENT IREF REFERENCES I MIN I SEN EN TIME GND 4 ISL6292C VIN VBAT 1kΩ ISL6292C VSEN FAULT STATUS V2P8 EN IREF TIME GND C TIME 15nF Q MAIN Q 100000:1 SEN Current Mirror SEN Input_OK + CA ...
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... Charging Flow Chart Power Up V >V IN POR Initialization Reset counter Trickle Charge VSEN>V N 1/8 TIMEOUT? Trickle Charge set FAULT low latch up charger EN toggled ? EOC or FAULT 5 ISL6292C ? POR Charge VSEN>= MIN TIMEOUT? N Constant Current Y Y Charge EOC indication: set STATUS high keep FAULT high ...
Page 6
... When powered with a current-limited adapter, the charger minimizes the thermal dissipation commonly seen in traditional linear chargers linear charger, the ISL6292C charges a battery in the popular constant current (CC) and constant voltage (CV) profile. The constant charge current I REF ...
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... ISL6292C LOW and a HIGH logic signal respectively. Figure 5 illustrates the start up of the charger between t The ISL6292C has a typical rising POR threshold of 3.4V and a falling POR threshold of 2.4V. The 2.4V falling threshold guarantees charger operation with a current- limited adapter to minimize the thermal dissipation. Charge Cycle ...
Page 8
... NOTE: The limits are still preliminary. Additional samples will be tested for the final results. Table 1 shows the charge current vs. selected R ) The ISL6292C is designed to be safe when the IREF pin is (EQ. 3) accidentally short-circuited to an external source or to ground. If the IREF pin is driven by an external source to below 0 ...
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... O 100 C FIGURE 7. CURRENT SIGNALS AT THE AMPLIFIER CA INPUT. ISL6292C, the EOC current is internally set to 1/10 of the CC charge current, that is, 1 ⋅ ----- - MIN REF 10 At the EOC, the STATUS signal rises to HIGH and is latched. The latch is not reset until a recharge cycle or a new charge cycle starts ...
Page 10
... Ceramic FIGURE 10. THE CIRCUIT TO GENERATE THE EQUIVALENT shown in Figure 10, Working with Current-Limited Adapter The ISL6292C can work with a current-limited adapter to significantly reduce the thermal dissipation during charging. Refer to the ISL6292 data sheet, which can be found at http://www.intersil.com, for more details. Board Layout Recommendations (EQ ...
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... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 11 ISL6292C 2X L10.3x3 0.15 ...