參數(shù)資料
型號: TPS5625CPWPR
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, PDSO28
封裝: PLASTIC, TSSOP-28
文件頁數(shù): 23/25頁
文件大?。?/td> 387K
代理商: TPS5625CPWPR
TPS5615, TPS5618, TPS5625, TPS5633
SYNCHRONOUS-BUCK HYSTERETIC REGULATOR CONTROLLER
SLVS177A – SEPTEMBER 1998 – REVISED NOVEMBER 1998
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description (continued)
drive regulator
The drive regulator provides drive voltage to the output drivers. The minimum drive voltage is 7 V. The minimum
short circuit current is 100 mA. Connect a 1-
F ceramic capacitor from DRV to DRVGND.
LODRV
The LODRV circuit is designed to protect the load against overvoltages that occur if the high-side FETs become
shorted. External components to sense an overvoltage condition are required to use this feature. When an
overvoltage fault occurs, LODRV is pulled low and the low-side FET will be turned on, overriding all control
signals inside the TPS56xx controller. The crowbar action will short the system-logic supply to ground through
the faulted high-side FETs and the low-side FETs. A fuse, in series with VIN, should be added to disconnect the
short circuit.
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage range, VCC (see Note 1)
–0.3 to 14 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range: BOOT to DRVGND (high-side driver ON)
–0.3 to 30 V
. . . . . . . . . . . . . . . . . . . . . . . . . . .
BOOT to HIGHDRV
–0.3 to 15 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BOOT to BOOTLO
–0.3 to 15 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INHIBIT, LODRV
–0.3 to 7.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PWRGD, OCP
–0.3 to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOHIB, LOSENSE, IOUTLO, HISENSE
–0.3 to 14 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
VSENSE
–0.3 to 5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage difference between ANAGND and DRVGND
±0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current, VREFB
0.5 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Short circuit duration, DRV
Continuous
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation
See Dissipation Rating Table
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating junction temperature range, TJ
0
°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 ANAGND.
DISSIPATION RATING TABLE
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
PWP
1150 mW
11.5 mW/
°C
630 mW
460 mW
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