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參數(shù)資料
| 型號： | LM21215MHX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 23.5 A SWITCHING REGULATOR, 525 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | TSSOP-20 |
| 文件頁數(shù)： | 19/24頁 |
| 文件大?。?/td> | 512K |
| 代理商： | LM21215MHX |
Symbol
Parameter
Conditions
Min
Typ
Max
Units
SYSTEM
GBW
Error Amplifier Gain-Bandwidth Product
11
MHz
I
FB
Feedback Pin Bias Current
V
FB = 0.6V
1
nA
I
COMPSRC
COMP Output Source Current
1
mA
I
COMPSINK
COMP Output Sink Current
65
A
POWERGOOD
V
OVP
Over Voltage Protection Rising Threshold
V
FB Rising
105
112.5
120
%V
FB
V
OVPHYS
Over Voltage Protection Hysteresis
V
FB Falling
2
%V
FB
V
UVP
Under Voltage Protection Rising Threshold
V
FB Rising
82
90
97
%V
FB
V
UVPHYS
Under Voltage Protection Hysteresis
V
FB Falling
2.5
%V
FB
t
PGDGL
PGOOD Deglitch Low (OVP/UVP Condition
Duration to PGOOD Falling)
15
s
t
PGDGH
PGOOD Deglitch High (minimum low pulse)
12
s
R
PD
PGOOD Pull-down Resistance
10
20
40
I
PGOODLEAK
PGOOD Leakage Current
V
PGOOD = 5V
1
nA
LOGIC
V
IHENR
EN Pin Rising Threshold
V
EN Rising
1.20
1.35
1.45
V
ENHYS
EN Pin Hysteresis
50
110
180
mV
I
EN
EN Pin Pullup Current
V
EN = 0V
2
A
THERMAL SHUTDOWN
T
THERMSD
Thermal Shutdown
165
°C
T
THERMSDHYS Thermal Shutdown Hysteresis
10
°C
Note 1:
Absolute Maximum Ratings indicate limits beyond witch damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2:
The PVIN pin can tolerate transient voltages up to 6.5 V for a period of up to 6ns. These transients can occur during the normal operation of the device.
Note 3:
The SW pin can tolerate transient voltages up to 9.0 V for a period of up to 6ns, and -1.0V for a duration of 4ns. These transients can occur during the
normal operation of the device.
Note 4:
The human body model is a 100 pF capacitor discharged through a 1.5 k
resistor to each pin.
Note 5:
Thermal measurements were performed on a 2x2 inch, 4 layer, 2 oz. copper outer layer, 1 oz.copper inner layer board with twelve 8 mil. vias underneith
the EP of the device and an additional sixteen 8 mil. vias under the unexposed package.
www.national.com
4
LM21215
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM21215MHX/NOPB | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| LM212B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| LM212D | 制造商:TI 制造商全稱:Texas Instruments 功能描述:OPERATIONAL AMPLIFIERS/BUFFERS |
| LM212H | 制造商:Motorola Inc 功能描述: |
| LM212JG | 制造商:TI 制造商全稱:Texas Instruments 功能描述:OPERATIONAL AMPLIFIERS/BUFFERS |
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