Synchronous Boost DC/DC Regulator ZCC3400
Features
􀁡 Up to 97% Efficiency
􀁡 Low voltage start-up：0.9V
􀁡 Shut-down current: < 1μA
􀁡 Input voltage：0.6V～4.4V
􀁡 Output voltage：2.5V～4.3V (Up to 6V
with Schottky)
􀁡 Low switch on resistance RDS(ON),
Internal switch: 0.35Ω
􀁡 1.4MHz fixed frequency switching
􀁡 High switch on current: 1A
􀁡 Short-Circuit protection
􀁡 Low profile SOT-23-6 package (lead-free
packaging is now available)
Applications
􀁡 Digital cameras and MP3
􀁡 Palmtop computers / PDAs
􀁡 Cellular phones
􀁡 Wireless handsets and DSL modems
􀁡 PC cards
􀁡 Portable media players
Description
The ZCC3400 is high efficiency synchronous, PWM step-up DC/DC converters optimized to provide a high efficient solution to medium power systems. The devices work
under the input voltage between 0.6V and
4.4V with a 1.4MHz fixed frequency switching. These features minimizes overall
solution footprint by allowing the use of tiny,
low profile inductors and ceramic
capacitors.
The ZCC3400 is capable of supplying an output voltage between 2.5V and 4.3V, the internal synchronous switch is desired to provide high efficiency without Schottky.
The devices also featured providing up to
260mA from a single AA cell input or up to
600mA from a 2-cell AA with a
3V/3.3V
output.
The ZCC3400 regulators are available in the industry standard SOT-23-6 power
packages (or upon request).

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