General Description

The MAX8520/MAX8521 are designed to drive thermo electric coolers (TECs) in space-constrained optical modules. Both devices deliver ±1.5A output current and control the TEC current to eliminate harmful current surges. On-chip FETs minimize external components and high switching frequency reduces the size of external components.

Features

♦ Circuit Footprint 0.31in2

♦ Low Profile Design

♦ On-Chip Power MOSFETs

♦ High-Efficiency Switch-Mode Design

♦ Ripple Cancellation for Low Noise

♦ Direct Current Control Prevents TEC Current Surges

♦ 5 Accurate Adjustable Heating/Cooling Current Limits

♦ 2 Accurate TEC Voltage Limit

♦ No Dead Zone or Hunting at Low Output Current

♦ ITEC Monitors TEC Current

♦ 1 Accurate Voltage Reference

♦ Switching Frequency up to 1MHz

♦ Synchronization (MAX8521)