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Description

The ZL2105 is an innovative power conversion and

management IC that combines an integrated

synchronous step-down DC-DC converter with key

power management functions in a small package,

resulting in a flexible and integrated solution.

Zilker Labs Digital-DC? technology enables

unparalleled power management integration while

delivering industry-leading performance in a tiny

footprint.

The ZL2105 can provide an output voltage from

0.6 V to 5.5 V from an input voltage between 4.5 V

and 14 V. Internal 4.5 A low RDS(ON) synchronous

power MOSFETs enable the ZL2105 to deliver

continuous loads up to 3 A with high efficiency,

and an internal Schottky bootstrap diode further

reduces discrete component count. The ZL2105

also supports phase spreading for reduced system

capacitance.

Power management features such as digital softstart delay and ramp, sequencing, tracking, and

margining can be configured by simple pinstrapping or through an on-chip serial port. The

ZL2105 uses standard PMBus? protocol for

communicating with other devices to provide

intelligent system power management.

Features

Power Conversion

? High efficiency

? 3 A continuous output current

? Integrated MOSFET switches

? 4.5 V to 14 V input range

? 0.54 V to 5.5 V output range (with margin)

? ¡À1 output voltage accuracy

? 200 kHz to 2 MHz switching frequency

? Supports phase spreading

? Small footprint (6 x 6 mm QFN package)

Power Management

? Digital soft start/stop

? Precision delay and ramp-up

? Power good/enable

? Voltage tracking, sequencing, and margining

? Output voltage/current monitoring

? Thermal monitor w/ shutdown

? Non-volatile memory

? I

2C/SMBus? communication bus

? PMBus compatible

Applications

? Telecom and storage equipment

? Digital set-top box

? Industrial supplies

? 12 V distributed power systems

? Point of load converters