TEA1501
GreenChip SMPS controller IC
Rev. 02 — 31 March 2006 Product data sheet 1. General description
The TEA1501 is the low power member of the GreenChip family and is especially
designed for standby Switched Mode Power Supply (SMPS) applications. The TEA1501
incorporates all the necessary functions for an efficient and low cost power supply for 90 V
to 276 V AC universal input. The TEA1501 is a monolithic integrated circuit and is
available in a SO8 package. The design is made in the BCD_PowerLogic750 process and
includes the high voltage switching device. Using only seven functional pins, the TEA1501
contains extensive control functions to form a flexible and a reliable power supply with a
minimum of external components. The TEA1501 operates in a flyback topology (see
Figure 3) with a fixed switching frequency, constant primary peak current control and
regulates the output voltage in Burst mode.
Applications include low power and standby power supplies as used in television, monitor,
lighting electronics and domestic appliances with an output power from 0.1 W to 3 W. 2. Features
2.1 Distinctive features Direct off-line operation (90 V to 276 V AC)
Low external component count
Integrated high voltage start-up current source for a fast start-up within 0.25 s
Integrated power switch: 650 V, 40 Ω, 0.25 A
Programmable primary peak current
Data transfer from isolated secondary side to non-isolated primary side via the
transformer
n On/off function replaces expensive mains switch by a functional switch 2.2 Green features …
