KB3429 Datasheet, PDF (1/5 Pages) Kingbor Technology Co – Synchronous Boost DC//DC Regullator

Kingbor Technology Co.,Ltd
TEL˖:(86)0755-26508846 FAX:˖(86)0755-26509052
Synchronous Boost DC/DC Regulator kB3429
KB3429
Features
z Up to 96% Efficiency
z Low voltage start-up˖0.82V
z Shut-down current: < 1µA
z Input voltage˖0.5V̚4.4V
z Output voltage˖2.5V̚4.3V (Up to 5V
with Schottky)
z Low switch on resistance RDS(ON),
Internal switch: 0.35¡
z 0.5MHz fixed frequency switching
z High switch on current: 1A
z Short-Circuit protection
z Low Profile (1mm) SOT-23 Package
Applications
z Digital cameras and MP3
z Palmtop computers / PDAs
z Cellular phones
z Wireless handsets and DSL modems
z PC cards
z Portable media players
Description
The kB3429 is high efficiency
synchronous, 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 1.5MHz fixed frequency
switching. These features minimizes overall
solution footprint by allowing the use of tiny,
low profile inductors and ceramic
capacitors.
The kB3429 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 kB3429 regulators are available in
the industry standard SOT-23-6 power
packages (or upon request).
kB3429
Ver: 1.3
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