IC / 17435E / MAX17435E / TQFN-24

تولید کننده: MAXIM
مدل کالا: MAX17435E
تماس 8893- 6186
قیمت: 0تومان

17435E - MAX17435E – MAXIM –TQFN-24

High-Frequency , Low-Cost SMBus Chargers

فرکانس بالا و شارژ کم هزینه

General Description


The MAX17435/MAX17535 integrated multichemistry battery-charger ICs simplify construction of accurate and efficient chargers. The MAX17435/MAX17535 provide SMBusK-programmable charge current, charge voltage, input current limit, relearn voltage, and digital readback of the IINP voltage. The MAX17435/MAX17535 utilize a charge pump to control the adapter selection n-channel MOSFETs when the adapter is present. When the adapter is absent, the charge pump is shut down and a p-channel MOSFET selects the battery.

The MAX17435/MAX17535 provide up to 7A of charge current to 2, 3, or 4 lithium-ion (Li+) cells in series. The charge current, and input current-limit sense amplifiers have low offset errors and can use 10mI sense resistors. The MAX17435/MAX17535 fixed-inductor ripple architecture significantly reduces component size and circuit cost.

The MAX17435/MAX17535 provide a digital output that indicates the presence of the adapter, an analog outputthat indicates the adapter or battery current, depending upon the presence or absence of the adapter, and a digital output that indicates when the adapter current exceeds a user-defined threshold.

The MAX17435 switches at an 850kHz frequency and the MAX17535 switches at 500kHz. The MAX17435/MAX17535 are available in a small, 4mm x 4mm x 0.75mm, 24-pin, lead-free TQFN package. An evaluation kit is available.




Low-Cost SMBus Charger

High Switching Frequency /0.85MHz/0.5MHz

Internal Boost Switches

SMBus-Programmable Charge Voltage, Input Current Limit, Charge Current, Relearn Voltage,and Digital IINP Readback

Single-Point Compensation

Automatic Selection of System Power Source Adapter n-Channel MOSFETs Driven by an Internal Dedicated Charge Pump

Adapter Soft-Start

S ±0.4% Accurate Charge Voltage

S ±2.5% Accurate Input Current Limiting

S ±3% Accurate Charge Current

Monitor Outputs for

AC Adapter Current /±2% Accuracy

Battery Discharge Current /±2% Accuracy

AC Adapter Presence

AC Adapter Overvoltage Protection

11-Bit Battery Voltage Setting

6-Bit, Charge-Current Setting/Input Current Setting

Improved IINP Accuracy at Low Input Current




Notebook Computers

PDAs and Mobile Communicators

2- to 4- Li+ Cell Battery-Powered Devices

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