U2352B Datasheet, PDF (4/8 Pages) TEMIC Semiconductors – PWM Power Control for DC Loads

U2352B
A time space, Dt, must be observed between switching the
output stage off and on and switching S₂ (current
measurement enable switch) in order to avoid incorrect
measurement and incorrect switching-off. To create this
atibmoeutwinD^dVo₂^{w,=thaeppcoronxtriomlavtoellytag3e00V2}miVs ^{readnudctehdeinretesurnltailnlgy}
voltage, V₂*, is compared with the triangular voltage, V₁
(see figure 3).
V
0.6 V_S
V₁
V₂
V₂*
0.3 V_S
95 9672
DV₂
V₇
S₂
closed
open
Dt
Dt
t
Figure 3. Signal characteristics of pulse width control with time window generation
Absolute Maximum Ratings
Reference point Pin 6, unless otherwise specified
Parameters
Symbol
Value
Unit
Power supply
current
t < 10 ms
Push-pull output stage
Output current
t < 2 ms
Input currents
Input voltages
Storage temperature range
Junction temperature
Ambient temperature
Pin 8
I_S
40
mA
Pin 8
i_S
400
Pin 7
±I_O
20
mA
Pin 7
±i_O
100
Pins 4 and 5
±I_I
Pins 1 and 3
I_I
10
mA
2
Pins 1, 2 and 3
V_I
0 to V₈
V
T_stg
–40 to +125
°C
T_j
+125
°C
T_amb
–10 to +100
°C
Thermal Resistance
Parameters
Junction ambient
DIP8
SO8 on PC board
SO8 on ceramic
Symbol
R_thJA
Maximum
110
220
140
Unit
K/W
4 (8)
TELEFUNKEN Semiconductors
Rev. A1, 29-May-96