MAX17015B Datasheet | Maxim Integrated

19-4576; Rev 0; 4/09 .. KIT ATION EVALU E L B AVAILA 1.2MHz, Low-Cost, High-Performance Chargers General Description Features o High Switching Frequency (1.2MHz) o Controlled Inductor Current-Ripple Architecture Reduced BOM Cost Small Inductor and Output Capacitors o ±0.4% Accurate Charge Voltage o ±2.5% Accurate Input-Current Limiting o ±3% Accurate Charge Current o Single-Point pensation o Monitor Outputs for ±2.5% Accurate Input Current Limit ±2.5% Battery Discharge Current (MAX17015B Only) AC Adapter Detection o Analog/PWM Adjustable Charge-Current Setting o Battery Voltage Adjustable for 3 and 4 Cells (MAX17005B) or 2 and 3 Cells (MAX17006B) o Adjustable Battery Voltage (4.2V to 4.4V/Cell) o Cycle-by-Cycle Current Limit Battery Short-Circuit Protection Fast Response for Pulse Charging Fast System-Load-Transient Response o Programmable Charge Current < 5A o Automatic System Power Source Selection with n-Channel MOSFET o Internal Boost Diode o +8V to +26V Input Voltage Range MAX17005B/MAX17006B/MAX17015B The MAX17005B/MAX17006B/MAX17015B are high-frequency multichemistry battery chargers. These circuits feature a new high-frequency current-mode architecture that significantly reduces ponent size and cost- . The charger uses a high-side MOSFET with n-channel synchronous rectifier. Widely adjustable charge current, charge voltage, and input current limit simplify the construction of highly accurate and efficient chargers. The charge voltage and charge current are set with analog control inputs. The charge current setting can also be adjusted with a PWM input. High-accuracy current-sense amplifiers provide fast cycle-by-cycle current-mode control to protect against short circuits to the battery and respond quickly to system load transients. In addition, the charger provides a high-accuracy analog output that is proportional to the adapter current. In the MAX17015B, this current monitor remains active when the adapter is absent to monitor...