General Description

The MAX17005/MAX17006/MAX17015 are high-frequency multichemistry battery chargers. These circuits feature a new high-frequency current-mode architecture that significantly reduces component 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.

Features

♦High Switching Frequency (1.2MHz)

♦Controlled Inductor Current-Ripple Architecture

  Reduced BOM Cost

  Small Inductor and Output Capacitors

♦±0.4% Accurate Charge Voltage

♦±2.5% Accurate Input-Current Limiting

♦±3% Accurate Charge Current

♦Single-Point Compensation

♦Monitor Outputs for

  ±2.5% Accurate Input Current Limit

  ±2.5% Battery Discharge Current(MAX17015 only)

  AC Adapter Detection

♦Analog/PWM Adjustable Charge-Current Setting

♦Battery Voltage Adjustable for 3 and 4 Cells

  (MAX17005) or 2 and 3 Cells (MAX17006)

♦Adjustable Battery Voltage (4.2V to 4.4V/Cell)

♦Cycle-by-Cycle Current Limit

  Battery Short-Circuit Protection

  Fast Response for Pulse Charging

  Fast System-Load-Transient Response

♦Programmable Charge Current < 5A

♦Automatic System Power Source Selection with n-Channel MOSFET

♦Internal Boost Diode

♦+8V to +26V Input Voltage Range

Applications

Notebook Computers

Tablet PCs

Portable Equipment with Rechargeable Batteries