TDA4605-3 Infineon Technologies, TDA4605-3 Datasheet - Page 5

• Manufacturer Part Number: TDA4605-3
• Description: IC POWER SUPPLY CONTROLLER 8DIP
• Manufacturer: Infineon Technologies

Specifications of TDA4605-3

• 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: SP000011729; TDA46053X; TDA46053XK

Pin Definitions and Functions
Pin No.
1
2
3
4
5
6
7
8
Version 2.0
Function
Information Input Concerning Secondary Voltage. By comparing the
regulating voltage - obtained trom the regulating winding of the transformer - with
the internal reference voltage, the output impulse width on pin 5 is adjusted to the
load of the secondary side (normal, overload, short-circuit, no load).
Information Input Regarding the Primary Current. The primary current rise in
the primary winding is simulated at pin 2 as a voltage rise by means of external
RC-element. When a voltage level is reached thats derived from the regulating
voltage at pin 1, the output impulse at pin 5 is terminated. The RC-element serves
to set the maximum power at the overload point set.
Input for Primary Voltage Monitoring: In the normal operation
between the thresholds
V
V
starts at
Ground
Output: Push-pull output provides
gate capacitance of the power MOS-transistor.
Supply Voltage Input: A stable internal reference voltage
the supply voltage also the switching thresholds
the supply voltage detector. If
when
Input for Soft-Start. Start-up will begin with short pulses by connecting a
capacitor from pin 7 to ground.
Input for the Oscillation Feedback. After starting oscillation, every zero
transition of the feedback voltage (falling edge) through zero (falling edge)
triggers an output pulse at pin 5. The trigger threshold is at + 50 mV typical.
3
3
<
>
V
V
V
3L
3H
6
: SMPS is switched OFF (line voltage too low).
V
<
: Compensation of the overload point regulation (controlled by pin 2)
3H
V
6A
:
V
. In addition the logic is only enable for
3L
= 1.7.
V
3H
5
and
V
6
V
>
3L
V
6E
(V
1 A for rapid charge and discharge of the
3H
then
>
V
V
3
REF
>
V
V
is switched on and swiched off
6A
3L
,
).
V
V
6E
6 min
,
V
V
REF
6 max
<
V
is derived from
6
TDA 4605-3
and
V
<
3
V
1 Jul 2002
is moving
6 max
V
6 min
.
for