- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358812 > LM1578A (National Semiconductor Corporation) CAP 100UF 50V ELECT TG SMD PDF資料下載
參數(shù)資料
| 型號(hào)： | LM1578A |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | CAP 100UF 50V ELECT TG SMD |
| 中文描述： | 開關(guān)穩(wěn)壓器 |
| 文件頁數(shù)： | 3/18頁 |
| 文件大小： | 1037K |
| 代理商： | LM1578A |
Electrical Characteristics
(Continued)
These specifications apply for 2V
≤
V
≤
40V (2.2V
≤
V
≤
40V for T
≤
25C), timing capacitor C
= 3900 pF, and 25%
≤
duty cycle
≤
75%, unless otherwise specified. Values in standard typeface are for T
J
= 25C; values in
boldface type
apply for
operation over the specified operating junction temperature range.
LM1578A
Limit
(Note 6)
(Note 11)
LM2578A/
LM3578A
Limit
(Note 7)
Symbol
Parameter
Conditions
Typical
(Note 5)
Units
CURRENT LIMIT
V
CL
Sense Voltage
Shutdown Level
Referred to V
IN
or Ground
(Note 10)
110
mV
mV (min)
mV (max)
%/C
95
140
80
160
V
CL
/
T
Sense Voltage
Temperature Drift
Sense Bias Current
0.3
I
CL
Referred to V
IN
Referred to ground
4.0
0.4
μA
μA
DEVICE POWER CONSUMPTION
I
S
Supply Current
Output OFF, V
E
= 0V
2.0
mA
mA (max)
mA
3.0/
3.3
3.5/
4.0
Output ON, I
C
= 750 mA pulsed,
V
E
= 0V
14
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating
the device beyond its rated operating conditions.
Note 2:
For T
J
≥
100C, the Emitter pin voltage should not be driven more than 0.6V below ground (see Application Information).
Note 3:
At elevated temperatures, devices must be derated based on package thermal resistance. The device in the TO-99 package must be derated at 150C/W,
junction to ambient, or 45C/W, junction to case. The device in the 8-pin DIP must be derated at 95C/W, junction to ambient. The device in the surface-mount package
must be derated at 150C/W, junction-to-ambient.
Note 4:
Human body model, 1.5 k
in series with 100 pF.
Note 5:
Typical values are for T
J
= 25C and represent the most likely parametric norm.
Note 6:
All limits guaranteed and 100% production tested at room temperature (standard type face) and at temperature extremes (bold type face). All limits are used
to calculate Average Outgoing Quality Level (AOQL).
Note 7:
All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). Room temperature limits are 100% production
tested. Limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods.All limits are used to calculateAOQL.
Note 8:
Input terminals are protected from accidental shorts to ground but if external voltages higher than the reference voltage are applied, excessive current will
flow and should be limited to less than 5 mA.
Note 9:
I
1
and I
2
are the external sink currents at the inputs (refer to Test Circuit).
Note 10:
Connection of a 10 k
resistor from pin 1 to pin 4 will drive the duty cycle to its maximum, typically 90%.Applying the minimum Current Limit Sense Voltage
to pin 7 will not reduce the duty cycle to less than 50%. Applying the maximum Current Limit Sense Voltage to pin 7 is certain to reduce the duty cycle below 50%.
Increasing this voltage by 15 mV may be required to reduce the duty cycle to 0%, when the Collector output swing is 40V or greater (see Ground-Referred Current
Limit Sense Voltage typical curve).
Note 11:
A military RETS specification is available on request. At the time of printing, the LM1578A RETS spec complied with the boldface limits in this column. The
LM1578AH may also be procured as a Standard Military Drawing.
3
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM158AFK | DUAL OPERATIONAL AMPLIFIERS |
| LM158APT | OP-AMP|DUAL|BIPOLAR|TSSOP|8PIN|PLASTIC |
| LM158AN | Voltage-Feedback Operational Amplifier |
| LM158AJ-QMLV | Voltage-Feedback Operational Amplifier |
| LM158AJLQMLV | OP-AMP|DUAL|BIPOLAR|DIP|8PIN|CERAMIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM1578AH/883 | 制造商:Rochester Electronics LLC 功能描述: |
| LM1578H | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller |
| LM158 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low power dual operational amplifiers |
| LM158 MD8 | 制造商:Texas Instruments 功能描述:LINEAR IC-NON VMI |
| LM158/A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW POWER DUAL OPERATIONAL AMPLIFIERS |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。