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TEA1522T View Datasheet(PDF) - NXP Semiconductors.

Part Name
Description
Manufacturer
TEA1522T
NXP
NXP Semiconductors. NXP
TEA1522T Datasheet PDF : 20 Pages
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NXP Semiconductors
7. Pinning information
7.1 Pinning
TEA152x
SMPS ICs for low-power systems
VCC 1
8 DRAIN
GND 2
7 n.c.
TEA152xP
RC 3
6 SOURCE
REG 4
5 AUX
001aae137
Fig 2. Pin configuration DIP8
VCC 1
GND 2
14 DRAIN
13 n.c.
GND 3
GND 4
12 n.c.
TEA152xT 11 SOURCE
GND 5
10 GND
RC 6
9 GND
REG 7
8 AUX
001aae138
Fig 3. Pin configuration SO14
7.2 Pin description
Table 3.
Symbol
VCC
GND
RC
REG
AUX
Pin description
Pin
DIP8 SO14
1
1
2
2, 3, 4,
5, 9, 10
3
6
4
7
5
8
SOURCE 6
n.c.
7
DRAIN
8
11
12, 13
14
Description
supply voltage
ground
frequency setting
regulation input
input for voltage from the auxiliary winding for timing
(demagnetization)
source of the internal MOS switch
not connected
drain of the internal MOS switch; input for the start-up current
and valley sensing
8. Functional description
The TEA152x family is the heart of a compact flyback converter, with the IC placed at the
primary side. The auxiliary winding of the transformer can be used for indirect feedback to
control the isolated output. This additional winding also powers the IC. A more accurate
control of the output voltage and/or current can be implemented with an additional
secondary sensing circuit and optocoupler feedback.
The TEA152x family uses voltage mode control. The frequency is determined by the
maximum transformer demagnetizing time and the time of the oscillator. In the first case,
the converter operates in the Self-Oscillating Power Supply (SOPS) mode. In the latter
case, it operates at a constant frequency, which can be adjusted with external
TEA152X
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 04 — 14 September 2010
© NXP B.V. 2010. All rights reserved.
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