參數(shù)資料
型號(hào)： LP2952
廠商： National Semiconductor Corporation
元件分類： 基準(zhǔn)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(yè)數(shù)： 16/22頁(yè)
文件大?。?/td> 1050K
代理商： LP2952
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
16
相關(guān)PDF資料
PDF描述
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
LP2954AIM 5V and Adjustable Micropower Low-Dropout Voltage Regulators
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LP2952 WAF 制造商:Texas Instruments 功能描述:
LP2952A 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Adjustable Micropower Low-Dropout Voltage Regulators
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(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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