Datasheet

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SLVS278E – AUGUST 2000 – REVISED MARCH 2003
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
†
Supply voltage, V
CC
(see Note 1) –0.3 V to 30 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage: INV1, INV2, CT, PWM/SKIP, REG5V_IN, SOFTSTART1, SOFTSTART2, –0.3 V to 7 V. . . . .
FLT, POWERGOOD –0.3 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STBY1, STBY2, 5V_STBY, TRIP1, TRIP2 –0.3 V to 30 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage: LL1, LL2 –1.0 V to 30 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUT1_u, OUT2_u –1.0 V to 35 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LH1, LH2 –0.3 V to 35 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUT1_d, OUT2_d, 5V_OUT, FB1, FB2 –0.3 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REF –0.3 V to 3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUT1_u, LH1 to LL1 –0.3 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUT2_u, LH2 to LL2 –0.3 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power dissipation (T
A
≤ 25°C), P
D
874 mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
–40°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
–55°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values are with respect to the network ground terminal unless otherwise noted.
2. This rating is specified at duty = 10% on output rise and fall each pulse. Each pulse width (rise and fall) for the peak current should
not exceed 2 µs.
3. See Dissipation Rating Table for free-air temperature range above 25°C.
DISSIPATION RATING TABLE
PACKAGE
T
A
≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE T
A
= 25°C
POWER DISSIPATION
T
A
= 85°C
DBT 874 mW 6.993 mW/°C 454 mW
recommended operating conditions
MIN NOM MAX UNIT
Supply voltage, V
CC
4.5 28 V
INV1, INV2, CT, PWM/SKIP, SOFTSTART1, SOFTSTART2, FLT 6
REG5V_IN, POWERGOOD –0.1 5.5
Input voltage, V
I
STBY1, STBY2, 5V_STBY 28
V
In ut
voltage,
V
I
OUT1_u, OUT2_u, LH1, LH2 33
V
TRIP1, TRIP2 –0.1 28
Oscillator frequency, f
osc
300 500 kHz
Operating free-air temperature range, T
A
–40 85 °C