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參數資料
| 型號： | TPS61045DRBTG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 0.45 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 3 X 3 MM, GREEN, PLASTIC, SON-8 |
| 文件頁數： | 12/21頁 |
| 文件大小： | 582K |
| 代理商： | TPS61045DRBTG4 |
SLVS440B – JANUARY 2003 – REVISED MARCH 2009
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ORDERING INFORMATION(1)
TA
8 Pin QFN Package (DRB)
Package Marking
–40°C to 85°C
TPS61045DRB
BHT
(1)
The DRB package is available taped and reeled. Add R suffix (TPS61045DRBR) to order quantities of 3000 units per reel. Add T suffix
(TPS61045DBRT) to order quantifies of 250 units per reel.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)
(1)
TPS61045
Supply voltage, VVIN
(2)
–0.3 V to 7 V
Voltages, VCTRL, V(FB), VL, VDO
(2)
–0.3 V to VIN + 0.3 V
Voltage, VSW
(2)
30 V
Continuous power dissipation
See Dissipation Rating Table
Operating junction temperature range
–40° C to 150° C
Storage temperature range, TSTG
–65° C to 150° C
(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.
(2)
All voltage values are with respect to network ground terminal.
DISSIPATION RATING
DERATING FACTOR
TA ≤ 25°C POWER
TA = 70°C POWER
TA = 85°C POWER
PACKAGE
ABOVE
RATING
TA = 25°C
8 pin QFN (DRB) (1)
370 mW
3.7 mW/°C
204 mW
148 mW
(1)
The thermal resistance junction to ambient of the 8 pin QFN package is 270°C/W. Standard 2 layer PCB without vias for the thermal
pad. See the application section on how to improve the thermal resistance RΘJA.
RECOMMENDED OPERATING CONDITIONS
MIN
TYP
MAX
UNIT
VVIN
Input voltage range
1.8
6
V
VSW
Switch voltage
30
V
L
Inductor (1)
4.7
mH
f
Switching frequency(1)
1
MHz
CI(C2)
Input capacitor (C2) (1)
4.7
mF
CO(C3)
Output capacitor (C3) (1)
1
mF
TA
Operating ambient temperature
–40
85
°C
TJ
Operating junction temperature
–40
125
°C
(1)
See application section for further information.
2
Copyright 2003–2009, Texas Instruments Incorporated
Product Folder Link(s): TPS61045
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