
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
Depicts the status of the V
CC
 pin voltage and the driver regulator output on the open-drain PWRRDY pin.
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.
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage range, V
CC 
(see Note 1)
Input voltage range:ADJ
–
0.3 V to 16 V
–
0.3 V to 7 V
–
0.3 V to 30 V
–
0.3 V to 16 V
–
0.3 V to 16 V
–
0.3 V to 16 V
–
0.3 V to 16 V
–
0.3 V to 16 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
BOOT to PGND (high-side driver ON)
BOOTLO to PGND
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
BOOT to BOOTLO
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
ENABLE, IN, and SYNC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
VDRV, PWRRDY, and DELAY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
DT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Continuous total power dissipation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Operating virtual junction temperature range, T
J
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
See Dissipation Rating Table
–
40
°
C to 125
°
C
–
65
°
C to 150
°
C
. . . . . . . . . . . . . . . . . . . . . . . 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
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.