TDA16847-2 Infineon Technologies, TDA16847-2 Datasheet - Page 14

• Manufacturer Part Number: TDA16847-2
• Description: IC POWER SUPPLY CONTROLLER 14DIP
• Manufacturer: Infineon Technologies

Specifications of TDA16847-2

• Applications: Power Supply Controller
• Voltage - Supply: 8 V ~ 16 V
• Current - Supply: 5mA
• Operating Temperature: -25°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 14-DIP (0.300", 7.62mm)
• Maximum Operating Temperature: + 125 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Input: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: SP000013856; TDA168472X; TDA168472XK

Version 2.0
Fixed Frequency and Synchronization Circuit SYN (Pin 7)
Figure 11 shows the Fixed Frequency and Synchronization Circuit. The circuit is
disabled when Pin 7 is not connected or connected to pin 9 (Vref, to avoid noise
sensitivity). With
1 mA and discharged slowly by
beginning of the charge phase. The switching frequency is (charge time ignored)
:
When the oscillator circuit is working the Fold Back Point Correction is disabled (not
necessary in fixed frequency mode). “Switch on” is only possible when a “zero crossing”
has occurred at Pin 3, otherwise “switch-on” will be delayed (Figure 12).
Figure 11
Synchronization and Fixed Frequency Circuit
R
7
and
C
7
at Pin 7 the circuit is working.
R
7
(Figure 11). The power transistor is switched on at
f
--------------
R
7
0 8
14
,
C
7
C
7
is charged fast with approx.
TDA 16847/16847-2
TDA 16846/16846-2
31 Jul 2003