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參數資料
| 型號： | TPS76038DBV |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | LOW-POWER 50-mA LOW-DROPOUT LINEAR REGULATORS |
| 中文描述： | 低功耗50 mA的低壓降線性穩壓器 |
| 文件頁數： | 9/11頁 |
| 文件大小： | 216K |
| 代理商： | TPS76038DBV |
TPS76030, TPS76032, TPS76033, TPS76038, TPS76050
LOW-POWER 50-mA LOW-DROPOUT LINEAR REGULATORS
SLVS144B –JULY 1998 – REVISED FEBRUARY 1999
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
1
3
5
TPS760xx
IN
EN
OUT
2
CI = 1
μ
F
Co = 2.2
μ
F
GND
Figure 17. TPS760xx Typical Application
over current protection
The over current protection circuit forces the TPS760xx into a constant current output mode when the load is
excessive or the output is shorted to ground. Normal operation resumes when the fault condition is removed.
An overload or short circuit may also activate the over temperature protection if the fault condition persists.
over temperature protection
The thermal protection system shuts the TPS760xx down when the junction temperature exceeds 160 C. The
device recovers and operates normally when the temperature drops below 150 C.
input capacitor
A 0.047
μ
F or larger ceramic decoupling capacitor with short leads connected between IN and GND is
recommended. The decoupling capacitor may be omitted if there is a 1
μ
F or larger electrolytic capacitor
connected between IN and GND and located reasonably close to the TPS760xx. However, the small ceramic
device is desirable even when the larger capacitor is present, if there is a lot of high frequency noise present
in the system.
output capacitor
Like all low dropout regulators, the TPS760xx requires an output capacitor connected between OUT and GND
to stabilize the internal control loop. The minimum recommended capacitance value is 2.2
μ
F and the ESR
(equivalent series resistance) must be between 0.1
and 20
. Capacitor values of 2.5-
μ
F or larger are
acceptable, provided the ESR is less than 20
. Solid tantalum electrolytic, aluminum electrolytic, and multilayer
ceramic capacitors are all suitable, provided they meet the requirements described above. Most of the
commercially available 2.2-
μ
F surface-mount solid-tantalum capacitors, including devices from Sprague,
Kemet, and Nichicon, meet the ESR requirements stated above. Multilayer ceramic capacitors should have
minimum values of 2.5
μ
F over the full operating temperature range of the equipment.
enable (EN)
A logic zero on the enable input shuts the TPS760xx off and reduces the supply current to less than 1
μ
A. Pulling
the enable input high causes normal operation to resume. If the enable feature is not used, EN should be
connected to IN to keep the regulator on all of the time. The EN input must not be left floating.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS76038DBVR | 功能描述:低壓差穩壓器 - LDO 50mA 3.8V 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 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS76038DBVRG4 | 功能描述:低壓差穩壓器 - LDO Low-Power 50-mA 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 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS76038DBVT | 功能描述:低壓差穩壓器 - LDO Low-Power 50-mA 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 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS76038DBVTG4 | 功能描述:低壓差穩壓器 - LDO Low-Power 50-mA 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 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS76050DBVR | 功能描述:低壓差穩壓器 - LDO 50mA 5V 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 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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