TPS5120

DUAL OUTPUT, TWOPHASE SYNCHRONOUS BUCK DC/DC CONTROLLER

SLVS278E – AUGUST 2000 – REVISED MARCH 2003

8

POST OFFICE BOX 655303

–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

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

874 mW

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–40

°C to 85°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–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

TA ≤ 25°C

POWER RATING

DERATING FACTOR

ABOVE TA = 25°C

POWER DISSIPATION

TA = 85°C

DBT

874 mW

6.993 mW/

°C

454 mW

recommended operating conditions

MIN

NOM

MAX

UNIT

Supply voltage, VCC

4.5

28

V

INV1, INV2, CT, PWM/SKIP, SOFTSTART1, SOFTSTART2, FLT

6

REG5V_IN, POWERGOOD

–0.1

5.5

Input voltage, VI

STBY1, STBY2, 5V_STBY

28

V

In ut voltage, VI

OUT1_u, OUT2_u, LH1, LH2

33

V

TRIP1, TRIP2

–0.1

28

Oscillator frequency, fosc

300

500

kHz

Operating free-air temperature range, TA

–40

85

°C