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参数资料
| 型号： | TPS2228PWPG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20 |
| 封装： | GREEN, PLASTIC, HTSSOP-20 |
| 文件页数： | 12/30页 |
| 文件大小： | 696K |
| 代理商： | TPS2228PWPG4 |
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TPS2228
TPS2221
SLVS419C MAY 2002 REVISED DECEMBER 2008
www.ti.com
2
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(1)
TPS2228, TPS2221
VI(3.3VIN)
0.3 V to 6 V
Input voltage range for card power
VI(5VIN)
0.3 V to 6 V
Input voltage range for card power
VI(1.8VIN)
0.3 V to 6 V
Logic input/output voltage
0.3 V to 6 V
Output voltage range
VO(XVCC)
0.3 V to 6 V
Output voltage range
VO(XVPP/VCORE)
0.3 V to 6 V
Continuous total power dissipation
See Dissipation Rating Table
Output current
IO(XVCC)
Internally Limited
Output current
IO(XVPP/VCORE)
Internally Limited
Operating virtual junction temperature range, TJ
40
°C to 100°C
Storage temperature range, Tstg
55
°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
260
°C
OC sink current
10 mA
(1) 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.
DISSIPATION RATINGS TABLE (THERMAL RESISTANCE =
°C/W)(1)
PACKAGE(2)
DERATING FACTOR ABOVE
TA = 25°C
TA ≤ 25°C POWER
RATING
TA = 70°C POWER
RATING
TA = 85°C POWER
RATING
20-PWP
30.67 mW/
°C
2300 mW
920.25 mW
460.12 mW
14-PWP
26.67 mW/
°C
2000 mW
800 mW
400 mW
DB-30
10.95 mW/
°C
821.47 mW
328.59 mW
164.3 mW
(1) Reference Calculating Junction Temperature in the application information section of this data sheet.
(2) These devices are mounted on an JEDEC low-k board (2 oz. traces on surface) (Based on the maximum recommended junction temperature
of 100
°C)
RECOMMENDED OPERATING CONDITIONS
MIN
MAX
UNIT
Input voltage, VI
VI(3.3VIN)
3.0
3.6
V
Input voltage, VI
3.3VIN is required for all circuit operations.
VI(5VIN)
2.7
5.5
V
3.3VIN is required for all circuit operations.
5VIN and 1.8VIN are only required for their respective functions.
VI(1.8VIN)
1.7
5.5
V
IO(XVCC) at TJ =100°C
1
A
Output current
IO(XVPP/VCORE) when switched to 5VIN
at TJ =100°C
100
mA
Output current
IO(XVPP/VCORE) when switched to 3.3VIN or
1.8VIN at TJ =100°C
500
mA
Clock frequency
2.5
MHz
Data
200
ns
Pulse duration
Latch
250
ns
Clock
100
ns
Reset
100
ns
Data to clock hold time (Figure 2)
100
ns
Data to clock setup time (Figure 2)
100
ns
Latch delay time (Figure 2)
100
ns
Clock delay time (Figure 2)
250
ns
Operating virtual junction temperature, TJ (maximum to be calculated at worst case PD at 85°C ambient)
40
100
°C
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