TDA4605-2 Infineon Technologies, TDA4605-2 Datasheet - Page 8

• Manufacturer Part Number: TDA4605-2
• Description: IC POWER SUPPLY CONTROLLER 8DIP
• Manufacturer: Infineon Technologies

Specifications of TDA4605-2

• Applications: Power Supply Controller
• Voltage - Supply: 7.5 V ~ 15.5 V
• Current - Supply: 11mA
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Input: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: SP000011728; TDA46052X; TDA46052XK

Block Diagram
Pin 1
In the control and overload amplifier the control voltage applied to this pin is compared with a stable
internal reference voltage V. The output signal of this stage is fed to the "stop" comparator. If the
control voltage is rather small at pin 1 an additional current is added by means of current source
which is controlled according the level at pin 7. This additional current is virtually reducing the
control voltage present at pin 1.
Pin 2
A voltage proportional to the drain current of the switching transistor is generated by means of an
external RC-combination in conjunction with the internal functional block primary current / voltage
converter. The output of this converter is controlled by the internal functional block "logic" and is
also connected to the internal reference voltage
of the "control and overload amplifier" the stop comparator will reset the control logic. Consequently
the output of pin 5 is switched to low potential. Further inputs for the logic stage are the outputs of
the start impulse generator with the stable reference potential
circuit as well as the primary voltage supervision circuit.
Pin 3
The primary voltage applied here via a voltage divider is used to stabilize the fold-back point. In
addition the logic is disable if - in comparison with the internal reference voltage
undervoltage condition is detected.
Pin 4
Ground
Pin 5
In the output stage the output signals from the "logic" block are converted into driving signals
suitable for power MOS-transistors.
Pin 6
From the supply voltage
the switching threshold
All other inter reference value (
voltage source is switched on and the source is switched off if
enable only if
Version 2.0
V
6 min
<
V
V
6
6A
V
<
6
,
V
applied to this pin internally a stable reference voltage
V
6 max
6E
V
,
R
V
.
,
6 max
V
2B
and
,
V
ST
V
8
6 min
and
V
2B
V
, for the supply voltage monitor section of the IC.
v
. If the voltage
) are derived for
V
ST
V
6
, the supply voltage monitoring
V
<
2
V
V
exceeds the output voltage
6A
REF
. In addition the logic is
. If
V
6
V
TDA 4605-2
>
REF
V
V
V
6E
- a mains
as well as
the
1 Jul 2002
V
REF