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| 型號： | LFC789D25CDR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| 封裝： | GREEN, PLASTIC, MS-012AA, SOIC-8 |
| 文件頁數(shù)： | 9/15頁 |
| 文件大小： | 422K |
| 代理商： | LFC789D25CDR |
LFC789D25
DUAL LINEAR FET CONTROLLER
SLLS565B MARCH 2003 REVISED SEPTEMBER 2004
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
DRV_VADJ
SEN_VADJ
VREF
GND
VCC
DRV_V25
SEN_V25
8
7
6
VPWR (3.3V)
4
3
2
1
R1
R2
1.25 V
2.5 V
LFC789D25
C3
22
F
C1
100
F
VCC (12V)
C5
0.1
F
C2
100
F
R1 = R2 = 100 (0.1% matched resistors)
VREF
VDDQ
C4
0.1
F
Figure 1. Typical Application Circuit for DDR1 Memory Voltage (VDDQ) and VREF Buffer for DIMMs
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC (see Note 1)
18 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VREF, SEN_VADJ, SEN_V25
0.3 V to 18 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θJA (see Notes 2 and 3): D package
97
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package
149
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . .
Operating virtual junction temperature, TJ
150
°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
65
°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.
2. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions
MIN
MAX
UNIT
VCC
Supply voltage
9
16
V
TA
Operating free-air temperature
0
70
°C
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