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參數(shù)資料
| 型號： | TPS70845PWP |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 線性穩(wěn)壓 |
| 英文描述： | DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS |
| 中文描述： | 兩用低壓差電壓帶的劈開SVS的系統(tǒng)集成穩(wěn)壓器的輸出電壓 |
| 文件頁數(shù)： | 13/29頁 |
| 文件大?。?/td> | 449K |
| 代理商： | TPS70845PWP |
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VOUT2
VIN1
VIN2
EN1
EN2
VOUT1
VSENSE1
PG1
MR
RESET
PG2
VSENSE2
VOUT2
TPS708xxPWP
(Fixed Output Option)
VIN
VOUT1
PG2
0.1
F
RESET
10
F
10
F
0.1
F
MR
EN1
>2 V
<0.7 V
EN2
250 k
>2 V
<0.7 V
TPS70845, TPS70848, TPS70851, TPS70858, TPS70802
DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS
WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS
SLVS301B – JUNE 2000 – REVISED OCTOBER 2002
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
timing diagrams
The following figures provide a timing diagram of how this device functions in different configurations.
application conditions not shown in block diagram:
VIN1 and VIN2 are tied to the same fixed input
voltage greater than the VUVLO. PG2 is tied to MR.
explanation of timing diagrams:
EN1 and EN2 are initially high; therefore, both
regulators are off, and PG1 and PG2 (tied to MR)
are at logic low. Since MR is at logic low, RESET
is also at logic low. When EN1 is taken to logic low,
VOUT1 turns on. Later, when EN2 is taken to logic
low, VOUT2 turns on. When VOUT1 reaches 95% of
its regulated output voltage, PG1 goes to logic
high. When VOUT2 reaches 95% of its regulated
output voltage, PG2 (tied to MR) goes to logic
high. When VIN1 is greater than VUVLO and MR
(tied to PG2) is at logic high, RESET is pulled to
logic high after a 120 ms delay. When EN1 and
EN2 are returned to logic high, both devices
power down and both PG1, PG2 (tied to MR2),
and RESET return to logic low.
95%
t1
120ms
EN2
VOUT2
VOUT1
PG2
MR
(PG2 tied to MR)
RESET
95%
EN1
PG1
NOTES: A. t1 – Time at which VIN is greater than VUVLO and MR is logic high.
B. The timing diagrams are not drawn to scale.
Figure 34. Timing When VOUT1 Is Enabled Before VOUT2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS70845PWPG4 | 功能描述:低壓差穩(wěn)壓器 - LDO Dual-Output LDO 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: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS70845PWPR | 功能描述:低壓差穩(wěn)壓器 - LDO Dual-Output LDO 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: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS70845PWPRG4 | 功能描述:低壓差穩(wěn)壓器 - LDO Dual-Output LDO 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: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS70848 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS |
| TPS70848PWP | 功能描述:低壓差穩(wěn)壓器 - LDO 3.3V/1.2V 250/125mA 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: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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