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TPS2838PWPR データシート(PDF) 5 Page - Texas Instruments

部品番号 TPS2838PWPR
部品情報  SYNCHRONOUS BUCK MOSFET DRIVERS WITH DRIVE REGULATOR
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI - Texas Instruments

TPS2838PWPR データシート(HTML) 5 Page - Texas Instruments

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TPS2838, TPS2839
TPS2848, TPS2849
SLVS367A – MARCH 2001 – REVISED JUNE 2001
5
www.ti.com
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 VCC 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, VCC (see Note 1)
–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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating virtual junction temperature range, TJ
–40
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–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.


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