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| 型號(hào)： | TPS51427ARHBT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, PQCC32 |
| 封裝： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件頁(yè)數(shù)： | 39/42頁(yè) |
| 文件大?。?/td> | 2131K |
| 代理商： | TPS51427ARHBT |
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SLUS843B – MAY 2008 – REVISED SEPTEMBER 2008 .................................................................................................................................................. www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Over recommended free-air temperature range, VV5DRV = 5 V, VVIN = 12 V (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
REFERENCE (REF)
1.98
2.02
|IVREF2| = 0 A
2.00
(–1%)
(+1%)
VREF2 Output Voltage
V
1.975
2.025
|IVREF2| < 50 A
2.00
(–1.25%)
(+1.25%)
VREF2 Sink Current
VREF2 in regulation
50
A
Falling edge of VREF2
1.575
1.700
1.825
VREF2 Undervoltage Lockout
V
Threshold
Hysteresis
0.1
OUT1 FAULT DETECTION
Overvoltage Trip Threshold
VFB1 with respect to nominal regulation point
+12.5%
+15%
+17.5%
Overvoltage Fault Propagation
VFB1 delay with 50-mV overdrive
10
s
Delay
Undervoltage Trip Threshold
VFB1 with respect to nominal output voltage
–35%
–30%
–25%
Undervoltage Fault Propagation
0.8
1
1.2
ms
Delay
Undervoltage Fault Enable Delay
From ENx signal
10
20
30
ms
VFB1 with respect to nominal output, falling edge,
PGOOD1 Lower Trip Threshold
–12.5%
–10%
–7.5%
typical hysteresis = 5%
PGOOD1 Low Propagation Delay
Falling edge, 50-mV overdrive
10
s
PGOOD1 High Propagation Delay
Rising edge, 50-mV overdrive
0.8
1.0
1.2
ms
PGOOD1 Output Low Voltage
PGOOD1 Low impedance, ISINK = 4 mA
0.4
0.8
V
PGOOD1 Leakage Current
PGOOD1 High impedance, forced to 5.5 V
1
A
OUT2 FAULT DETECTION
Overvoltage Trip Threshold
REFIN2 with respect to nominal regulation point
+12.5%
+15.0%
+17.5%
Overvoltage Fault Propagation
REFIN2 delay with 50-mV overdrive
10
s
Delay
Undervoltage Trip Threshold
REFIN2 with respect to nominal output voltage
–35%
–30%
–25%
Undervoltage Fault Propagation
0.8
1
1.2
ms
Delay
Undervoltage Fault Enable Delay
From ENx signal
10
20
30
ms
REFIN2 with respect to nominal output, falling edge,
PGOOD2 Lower Trip Threshold
–12.5%
–10%
–7.5%
typical hysteresis = 5%
PGOOD2 Low Propagation Delay
Falling edge, 50-mV overdrive
10
s
PGOOD2 High Propagation Delay
Rising edge, 50-mV overdrive
0.8
1.0
1.2
ms
PGOOD2 Output Low Voltage
PGOOD2 Low impedance, ISINK = 4 mA
0.4
0.8
V
PGOOD2 Leakage Current
PGOOD2 High impedance, forced to 5.5 V
1
A
6
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS51427A
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| TPS51427ARHBTG4 | 功能描述:DC/DC 開(kāi)關(guān)控制器 Dual D-Cap Synch Step Down Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS51427RHBR | 功能描述:DC/DC 開(kāi)關(guān)控制器 Dual D-Cap Synch Step Down Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS51427RHBRG4 | 功能描述:DC/DC 開(kāi)關(guān)控制器 Dual D-Cap Sync Step Down Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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| TPS51427RHBTG4 | 功能描述:DC/DC 開(kāi)關(guān)控制器 Dual D-Cap Sync Step Down Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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