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參數(shù)資料
| 型號： | LP2952A |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Adjustable Micropower Low-Dropout Voltage Regulators |
| 中文描述： | 可調(diào)微功率低壓差穩(wěn)壓器 |
| 文件頁數(shù)： | 16/22頁 |
| 文件大?。?/td> | 1050K |
| 代理商： | LP2952A |
Application Hints
(Continued)
SHUTDOWN INPUT
A logic-level signal will shut off the regulator output when a
“LOW” (
<
1.2V) is applied to the Shutdown input.
To prevent possible mis-operation, the Shutdown input must
be actively terminated. If the input is driven from open-
collector logic, a pull-up resistor (20 k
to 100 k
recom-
mended) should be connected from the Shutdown input to
the regulator input.
If the Shutdown input is driven from a source that actively
pulls high and low (like an op-amp), the pull-up resistor is not
required, but may be used.
If the shutdown function is not to be used, the cost of the
pull-up resistor can be saved by simply tying the Shutdown
input directly to the regulator input.
IMPORTANT:
Since the Absolute Maximum Ratings state
that the Shutdown input can not go more than 0.3V below
ground, the reverse-battery protection feature which protects
the regulator input is sacrificed if the Shutdown input is tied
directly to the regulator input.
If reverse-battery protection is required in an application,
the
pull-up resistor between the Shutdown input and the regula-
tor input must be used.
Typical Applications
Basic 5V Regulator
01112715
5V Current Limiter with Load Fault Indicator
01112716
* Output voltage equals +V
IN
minum dropout voltage, which varies with
output current. Current limits at a maximum of 380 mA (typical).
** Select R1 so that the comparator input voltage is 1.23V at the output
voltage which corresponds to the desired fault current value.
Low T.C. Current Sink
01112717
L
www.national.com
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相關PDF資料 |
PDF描述 |
|---|---|
| LP2952 | Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2952I | Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2952I-3.3 | Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2954A | 5V and Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2954AISX | 5V and Adjustable Micropower Low-Dropout Voltage Regulators |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LP2952AI | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2952AI-3.3 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2952AIM | 功能描述:低壓差穩(wěn)壓器 - 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(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP2952AIM/NOPB | 功能描述:低壓差穩(wěn)壓器 - 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(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP2952AIM-3.3 | 功能描述:低壓差穩(wěn)壓器 - 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(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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