TEA1207T Philips Semiconductors, TEA1207T Datasheet - Page 2

• Manufacturer Part Number: TEA1207T
• Description: High efficiency DC/DC converter
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FEATURES
APPLICATIONS
ORDERING INFORMATION
1999 Oct 21
TEA1207T
TYPE NUMBER
Fully integrated DC/DC converter circuit
Up-or-down conversion
Start-up from 1.85 V input voltage
Adjustable output voltage
High efficiency over large load range
Power handling capability up to 0.85 A continuous
average current
275 kHz switching frequency
Low quiescent power consumption
Synchronizing with external clock
True current limit for Li-ion battery compatibility
Up to 100% duty cycle in down mode
Undervoltage lockout
Shut-down function
8-pin SO package.
Cellular and cordless phones, Personal Digital
Assistants (PDAs) and others
High efficiency DC/DC converter
NAME
SO8
plastic small outline package; 8 leads; body width 3.9 mm
2
GENERAL DESCRIPTION
The TEA1207T is a fully integrated DC/DC converter.
Efficient, compact and dynamic power conversion is
achieved using a novel digitally controlled concept like
Pulse Width Modulation (PWM) or Pulse Frequency
Modulation (PFM), integrated low R
switches with low parasitic capacitances, and fully
synchronous rectification.
The device operates at 275 kHz switching frequency
which enables the use of external components with
minimum size. Deadlock is prevented by an on-chip
undervoltage lockout circuit.
Efficient behaviour during short load peaks and
compatibility with Li-ion batteries is guaranteed by an
accurate current limiting function.
DESCRIPTION
Supply voltage source for low-voltage chip sets
Portable computers
Battery backup supplies
Cameras.
PACKAGE
Preliminary specification
DSon
TEA1207T
CMOS power
VERSION
SOT96-1