參數(shù)資料
型號(hào): TPS726126
廠商: Texas Instruments, Inc.
英文描述: "Single Output LDO
中文描述: 單輸出 LDO、1.0A、固定電壓 (1.26V)、任意電容、低輸入電壓、集成 SVS
文件頁(yè)數(shù): 3/16頁(yè)
文件大小: 445K
代理商: TPS726126
www.ti.com
P
Dmax +
(3.3 * 2.5) V x 1 A + 800 mW
(7)
RθJAmax + (125 * 55)°C 800 mW + 87.5°C W
(8)
0
100
120
140
160
180
PCB Copper Area in2
Thermal
Resistance
θ
JA
R
C/W°
No Air Flow
80
60
40
20
0.1
1
10
0
1
2
3
6
0
25
50
75
100
150
Maximum
Power
Dissipation
W
P
D
125
TA = 25°C
TA Ambient Temperature °C
4
5
4 in2 PCB Area
0.5 in2 PCB Area
TPS726126
TPS72615, TPS72616
TPS72618, TPS72625
SLVS403F – MAY 2002 – REVISED MAY 2005
THERMAL INFORMATION (continued)
Substituting TJmax for TJ into Equation 4 gives Equation 8:
From Figure 23, RθJA vs PCB Copper Area, the ground plane needs to be 0.55 in
2 for the part to dissipate 800
mW. The operating environment used to construct Figure 23 consisted of a board with 1 oz. copper planes. The
package is soldered to a 1 oz. copper pad on the top of the board. The pad is tied through thermal vias to the 1
oz. ground plane.
Figure 23. SOT223 Thermal Resistance vs PCB AREA
From the data in Figure 23 and rearranging Equation 4, the maximum power dissipation for a different ground
plane area and a specific ambient temperature can be computed (as shown in Figure 24).
Figure 24. SOT223 Power Dissipation
11
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TPS726126DCQ 功能描述:低壓差穩(wěn)壓器 - LDO Low Input Voltage Any Cap 1A RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓(最大值):307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS726126DCQG4 功能描述:低壓差穩(wěn)壓器 - LDO Low Input Voltage Any Cap 1A RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓(最大值):307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS726126DCQR 功能描述:低壓差穩(wěn)壓器 - LDO Low Input Voltage Any Cap 1A RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓(最大值):307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS726126DCQRG4 功能描述:低壓差穩(wěn)壓器 - LDO Low Input Voltage Any Cap 1A RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓(最大值):307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS72615DCQ 功能描述:低壓差穩(wěn)壓器 - LDO Low Input Voltage Any Cap 1A RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓(最大值):307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20