TDA8385 Datasheet, PDF (12/21 Pages) NXP Semiconductors – Control circuit for a Self-Oscillating Power Supply SOPS

Philips Semiconductors
Control circuit for a Self-Oscillating
Power Supply (SOPS)
Preliminary specification
TDA8385
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
All voltages are measured with respect to ground; positive current flow into the IC; all pins not mentioned in the voltage
list are not allowed to be voltage driven. The voltage ratings are valid provided other ratings are not violated; current
ratings are valid provided the power rating is not violated.
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
Voltages
V_P
supply voltage
pin 2 connected −0.5
pin 2 open-circuit −0.5
20
V
18
V
V_n
V₃
V_8,10
V₁₂
V₁₅
voltage on pins 1, 2, 4, 7, 9 and 13
voltage on pin 3
voltage on pins 8 and 10
voltage on pin 12
voltage on pin 15
Currents
I₁
current on pin 1
I_n
current on pins 2, 12 and 15
I₃
current on pin 3
I_{5, 6}
current on pins 5 and 6
I₇
current on pin 7
I₁₁
current on pin 11
I₁₆
current on pin 16
Temperatures
T_amb
T_stg
operating ambient temperature
storage temperature
Power dissipation
P_tot
total power dissipation
−0.5
+18
V
−0.5
+6
V
−0.5
+3.9
V
−0.1
+0.5
V
−0.5
+0.5
V
0
2
mA
−10
+10
mA
−1
0
mA
−1
+1
mA
−1
+25
mA
−10
+0.5
mA
0
20
mA
−25
+70
°C
−55
+150
°C
−
500
mW
THERMAL RESISTANCE
SYMBOL
R_{th j-a}
PARAMETER
from junction to ambient in free air
THERMAL RESISTANCE
55 K/W
March 1994
13