Abstract: This application note describes the differences between the DS2760 battery monitor and protector and the DS2761 battery monitor and protector. It describes each difference in detail and indicates what, if any, changes would be re...

Abstract: The DS2761 contains a current offset register that can be utilized by the designer to eliminate inherent offset introduced by the current A/D within the IC. Improper calibration of this register, however, can negate any positive ...

Abstract: This application note describes the use of a current-sense amplifier with internal dual comparators to monitor and protect against too low battery voltage and too high battery current. While written for lead-acid batteries, the c...

Abstract: MOSFET power-switch drivers must be protected from a reverse-battery connection. A small rectifier diode can protect against reversed batteries, but that approach is generally unacceptable for systems in which battery life is cru...

Abstract: This circuit uses a NiMH cell to replace a lithium battery. Its output simulates the discharge characteristic of a lithium (Li+) battery. IntroductionLithium-based (Li+) batteries are becoming common ...

摘要：DS2784高邊nFET保護(hù)器沒(méi)有針對(duì)充電器反接的保護(hù)電路。因此，故障狀態(tài)下，如果充電器反向連接，DC FET將可能處于導(dǎo)通狀態(tài)。本文介紹了發(fā)生充電器反接時(shí)可使DC FET保持關(guān)閉的...

摘要：本應(yīng)用筆記通過(guò)簡(jiǎn)單的設(shè)計(jì)修改，可以利用DS2726 Li+電池保護(hù)器承受負(fù)壓，在充電器反接時(shí)為電池提供保護(hù)。 概述充電器反接會(huì)損壞DS2726 Li+電池保護(hù)器。...

In the portable-system power supply of Figure 1, L2 and Q2 are part of an unorthodox battery-charger configuration for the auxiliary switch-mode output (which normally generates a negative bias voltage for LCDs). Combining the battery char...

Battery Ch...

Abstract: A boost DC-DC controller built with the MAX1771 DC-DC controller makes a simple switch-mode current source that is useful for battery charging. The voltage control loop is disabled so that the current control loop provides regula...

Because battery charges control power, they resemble regulators in some respects. Linear chargers, for example, are less efficient than switching types when operating at high current and a large VIN - VOUT difference. A linear charger, pow...

Quick-Char...

Abstract: The I²C bus and the SMBus™ are popular 2-wire buses that are essentially compatible with each other. Normally devices, both masters and slaves, are freely interchangeable between both buses. Both buses feature addressa...

Abstract: Charge NiCd or NiMH batteries with solar cells. This circuit extracts the maximum power from a solar array to charge a battery stack. It employs the MAX856 boost converter and MAX982 dual comparator with reference. ...

Additional Information: Quick View Data Sheet for the MAX1645/MAX1645A Quick View Data Sheet for the MAX1772 Technical Support: Power IntroductionWith the increasing demand for mobile ...

The SMBus™ specification has done a great deal to standardize the interface between portable products, batteries, and chargers. SMBus was defined in 1995, and it has steadily gained in popularity. SMBus charger ICs are more complex t...

Abstract: A flyback converter implements a current-limited power supply to charge lead-acid batteries. The MAX773 current-mode controller limits the output current and the flyback transformer provides isolation and flexibility for input vo...

Add-On Cir...

Abstract: Three techniques are shown for charging lithium-ion (Li+) batteries. Linear, switch-mode, and pulse circuits are shown for each type. The proliferation of portable devices in recent years has underlined the need...

Abstract: Ultra-low resistance surface mount current-sense resistors seem like the ideal package. The physical design, a strap of metal, seems ideal, offering the lowest inductance possible. Too often these resistors need some kind of resi...