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參數(shù)資料
| 型號： | LP3992 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Micropower 1.5V CMOS Voltage Regulator with Shutdown Control |
| 中文描述： | 微1.5V的CMOS電壓調(diào)節(jié)器的關(guān)斷控制 |
| 文件頁數(shù)： | 4/9頁 |
| 文件大?。?/td> | 245K |
| 代理商： | LP3992 |
Electrical Characteristics
(Continued)
Note 3:
The package can pass MSL (moisture sensitivity level) 1 at 260C.
Additional information on lead temperature can be obtained from National Semiconductor web pages
http://www.national.com/packaging/general.html
http://www.national.com/packaging/plastic.html
Note 4:
The Maximum power dissipation of the device is dependant on the maximum allowable junction temperature for the device and the ambient temperature.
This relationship is given by the formula
P
D
= (T
J
- T
A
)/
θ
JA
Where T
J
is the junction temperature, T
A
is the ambient temperature, and
θ
JA is the junction-to-ambient thermal resistance. The Maximum Power dissipation across
the device related to the operational conditions can be calculated using the formula
P
D
= (V
IN(MAX)
- V
OUT(MAX)
) * (I
OUT(MAX)
)
Substituting the device values gives the max power dissipation = (5.2V - 1.5V)(0.03) = 0.111W. This figure for Maximum power dissipation can be used to derive the
maximum ambient temperature. For the SOT23-5 package
θ
= 220C/W, thus for this device the maximum temperature difference, (T
- T
), is 24.4C, (0.111 *
220). This gives the maximum ambient temperature for operation as 100.6C, (125 - 24.4). Similarly the numbers for the absolute maximum case can be derived
using a figure of 150C for the junction temperature.
Note 5:
The human body is 100pF discharge through 1.5kW resistor into each pin. The machine model is a 200 pF capacitor discharged directly into each pin.
Note 6:
The device maintains the regulated output voltage without the load.
Note 7:
This electrical specification is guaranteed by design.
Note 8:
Time for V
OUT
to rise from 50 to 85% of V
OUT(nom)
. (figure 1)
Note 9:
Time from V
SD
= 1.15V to V
OUT
= 95%(V
OUT(nom)
). (figure 1)
Note 10:
Time for V
OUT
to fall from 85 to 50% of V
OUT(nom)
. (figure 1)
Note 11:
Time from V
SD
= 0.4V to V
OUT
= 5%(V
OUT(nom)
. (figure 1)
Note 12:
Short circuit current is measured on the input supply line at the point when the short circuit condition reduces the output voltage to 95% of its nominal value.
Note 13:
All limits are guaranteed. All electrical characteristics having room-temperature limits are tested during production at T
J
= 25C or correlated using
Statistical Quality Control methods. Operation over the temperature specification is guaranteed by correlating the electrical characteristics to process and
temperature variations and applying statistical process control.
Output Capacitor, Recommended Specifications
Symbol
Parameter
Conditions
Typ
Limit
Units
Min
1.0
5
Max
C
o
Output Capacitor
Capacitance(Note 14)
ESR
μF
m
500
Note 14:
Capacitor types recommended are X7R, Y5V, and Z5U. X7R tolerance is quoted as 15% over temperature.
20041203
FIGURE 1. Figure 1. T
on
/T
off
Timing Diagram
L
www.national.com
4
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3992IMF-1.5 | 制造商:Texas Instruments 功能描述:IC, V REG 30MA, SHUTDOWN, SMD, 3992 制造商:Texas Instruments 功能描述:LDO, FIXED, 1.5V, 30mA, 5.2V, SOT-23-5; Primary Input Voltage:5.2V; Output Voltage Fixed:1.5V; Dropout Voltage Vdo:400V; No. of Pins:5; Output Current:30mA; Operating Temperature Min:-40C; Operating Temperature Max:125C ;RoHS Compliant: Yes |
| LP3992IMF-1.5/NOPB | 功能描述:IC REG LDO 1.5V 30MA SOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 產(chǎn)品變化通告:Heatsink Pkg Change 09/Oct/2007 標準包裝:50 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:24V 輸入電壓:最高 40 V 電壓 - 壓降（標準）:2V @ 1A 穩(wěn)壓器數(shù)量:1 電流 - 輸出:1A 電流 - 限制（最?。?- 工作溫度:0°C ~ 125°C 安裝類型:通孔 封裝/外殼:TO-220-3 供應(yīng)商設(shè)備封裝:TO-220-3 包裝:管件 |
| LP3992IMFX-1.5 | 功能描述:線性穩(wěn)壓器 - 標準 RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| LP3992IMFX-1.5/NOPB | 功能描述:線性穩(wěn)壓器 - 標準 RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| LP3994LD-1.5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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