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參數(shù)資料
| 型號： | LM2925 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| 中文描述： | 無電容，NMOS管，150mA的低壓差穩(wěn)壓器的反向電流保護 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 223K |
| 代理商： | LM2925 |
LM2925
Low Dropout Regulator with Delayed Reset
General Description
The LM2925 features a low dropout, high current regulator.
Also included on-chip is a reset function with an externally
set delay time. Upon power up, or after the detection of any
error in the regulated output, the reset pin remains in the ac-
tive low state for the duration of the delay. Types of errors de-
tected include any that cause the output to become unregu-
lated: low input voltage, thermal shutdown, short circuit,
input transients, etc. No external pull-up resistor is neces-
sary. The current charging the delay capacitor is very low, al-
lowing long delay times.
Designed primarily for automotive applications, the LM2925
and all regulated circuitry are protected from reverse battery
installations or two-battery jumps. During line transients,
such as a load dump (60V) when the input voltage to the
regulator can momentarily exceed the specified maximum
operating voltage, the 0.75A regulator will automatically shut
down to protect both internal circuits and the load. The
LM2925 cannot be harmed by temporary mirror-image inser-
tion. Familiar regulator features such as short circuit and
thermal overload protection are also provided.
Features
n
5V, 750 mA output
n
Externally set delay for reset
n
Input-output differential less than 0.6V at 0.5A
n
Reverse battery protection
n
60V load dump protection
n
50V reverse transient protection
n
Short circuit protection
n
Internal thermal overload protection
n
Available in plastic TO-220
n
Long delay times available
n
P
+
Product Enhancement tested
Typical Application Circuit
Connection Diagram
DS005268-1
*
Required if regulator is located far from power supply filter.
OUT
must be at least 10 μF to maintain stability. May be increased
wiC
FIGURE 1. Test and Application Circuit
TO-220 5-Lead
DS005268-2
Order Number LM2925T
See NS Package Number T05A
April 1998
L
1998 National Semiconductor Corporation
DS005268
www.national.com
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相關代理商/技術參數(shù) |
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| LM2927T | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel 制造商:Texas Instruments 功能描述: |
| LM2930-5KC | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM2930A | 功能描述:低壓差穩(wěn)壓器 - LDO 5.0V 0.4A Positive 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 |
| LM2930S-5.0 | 制造商:Texas Instruments 功能描述: 制造商:Texas Instruments 功能描述:V REG LDO +5.0V SMD 2930 TO2633 |
| LM2930S-5.0 WAF | 制造商:Texas Instruments 功能描述: |
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