ACT6305 データシートの表示（PDF） - Active-Semi, Inc
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ACT6305 Datasheet PDF : 10 Pages
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ACT6305
Rev 3, 15-Nov-12
Low Input High Efficiency
Synchronous Step-Up DC/DC Converter
FEATURES
• 1V Typical Startup Voltage
• Up to 94% Efficiency
• Fully Integrated Power Stage
• Fixed 3.3V/5V or Adjustable Output Voltage
• NanoStandbyTM Shutdown Mode
• Tiny SOT23-5 Package
− RoHS Compliant Package
APPLICATIONS
• Hand-Held Devices
• One to Three Cell Battery Operated Devices
• PDAs
• Cellular Phones
• Digital Cameras
• GPS
GENERAL DESCRIPTION
The ACT6305 is a high efficiency synchronous
step-up DC/DC converter that consumes just 17µA
of quiescent supply current and is capable of deliv-
ering more than 400mA output current using only
three external components. This device achieves a
typical startup voltage of just 1V, making it ideal for
applications operating from 1 or 2 alkaline cells.
This device incorporates an internal synchronous
rectifier, and achieves excellent peak efficiency of
up to 94% and features a proprietary control
scheme that ensures high efficiency over a wide
load current range.
The ACT6305 features pin-selectable output volt-
ages of 3.3V or 5V, or it can also be set externally
to any voltage between 2V and 5V. The ACT6305 is
available in a tiny SOT23-5 package.
TYPICAL APPLICATION CIRCUIT
100
90
80
70
60
50
40
30
0.1
Efficiency vs. Output Current
VIN = 5V
VIN = 2.4V
VIN = 3.5V
VIN = 1.2V
VOUT = 5V
1.0
10
100
1000
Output Current (mA)
Pb-free
Innovative PowerTM
-1-
www.active-semi.com
Copyright © 2012 Active-Semi, Inc.
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