FT435X Datasheet, PDF (1/9 Pages) List of Unclassifed Manufacturers – PFM Synchronous Step-up DC/DC Converter

Fremont Micro Devices
FT435X
PFM Synchronous Step-up DC/DC Converter
FEATURES
 Up to 90% efficiency
 Generates 3.3V at 150mA with 1.5V Input
Voltage
 Low Startup Voltage: 0.8V
 Low hold-on Voltage: 0.55V
 Output Voltage Range: 2.5V to 5.5V
 Internal Synchronous Rectifier, No External
Schotty Diode needed
 Output Voltage Accuracy: ±2.5%
 Low Quiescent Current: 6uA
 SOT89-3, SOT23-3 and SOT23-5 Package
APPLLICATIONS
 All Single or Dual-Cell Battery-Powered
Products
 Wireless Mouse
 Wireless Microphones
 PDAs
 Electronic Toys
 Personal Medical Products
DESCRIPTION
The FT435 is a high efficiency synchronous step-up
DC/DC converter. The converter can start up by
supply voltage as low as 0.8V, and capable of
delivering maximum 150mA output current at 3.3V
output with 1.5V input Voltage. Quiescent current
drawn from power source is as low as 6uA. All of
these features make FT435 series be suitable for the
portable devices, which are supplied by a single
battery to four-cell batteries. Only three external
components are required to deliver a fixed output
voltage. Pulse Frequency Modulation scheme brings
optimized performance for applications with light
output loading and low input voltages.
FT435 is available in SOT89-3 、SOT23-3 and
SOT23-5 packages which is PB-free. And in
SOT23-5 package, the device can be switch on or off
by CE pin, to minimize the standby supply current.
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SEP--2010