TPS2838, TPS2839

TPS2848, TPS2849

SLVS367A – MARCH 2001 – REVISED JUNE 2001

5

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detailed description (continued)

IN

The IN terminal is a TTL-compatible digital terminal that is the input control signal for the drivers. The

TPS2838/48 have noninverting inputs; the TPS2839/49 have inverting inputs. On the TPS2838 and TPS2848,

a high on IN results in a high on HIGHDR. On the TPS2839 and TPS2849, a high on IN results in a low on

HIGHDR.

SYNC (TPS283x only)

The SYNC terminal controls whether the drivers operate in synchronous or nonsynchronous mode. In

synchronous mode, the low-side FET is operated as a synchronous rectifier. In nonsynchronous mode, the

low-side FET is always off. SYNC is a TTL-compatible digital terminal.

PWRRDY

DELAY

Adjustable high-side turnon delay from from when the low-side FET is turned off.

ADJ (TPS283x only)

Input for adjusting the driver regulator output. See the application information section for the adjustment formula.

–0.3 V to 16 V

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

Input voltage range: ADJ

–0.3 V to 7 V

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

BOOT to PGND (high-side driver ON)

–0.3 V to 30 V

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

BOOTLO to PGND

–0.3 V to 16 V

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

BOOT to BOOTLO

–0.3 V to 16 V

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

ENABLE, IN, and SYNC

–0.3 V to 16 V

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

VDRV, PWRRDY, and DELAY

–0.3 V to 16 V

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

DT

–0.3 V to 16 V

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

Continuous total power dissipation

See Dissipation Rating Table

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

–40

°C to 125°C

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

–65

°C to 150°C

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

Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds

260

°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.

NOTE 1: Unless otherwise specified, all voltages are with respect to PGND.