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參數(shù)資料
| 型號： | LM20124MH |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 4A, 1MHz PowerWise㈢ Synchronous Buck Regulator |
| 中文描述： | 6.6 A SWITCHING REGULATOR, 1100 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | TSSOP-16 |
| 文件頁數(shù)： | 4/20頁 |
| 文件大小： | 492K |
| 代理商： | LM20124MH |
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Enable
V
IH_EN
V
EN_HYS
EN Pin turn-on Threshold
V
EN
Rising
1.08
1.18
1.28
V
EN Pin Hysteresis
66
mV
Thermal Shutdown
T
SD
T
SD_HYS
Thermal Resistance
θ
JA
Thermal Shutdown
160
°C
Thermal Shutdown Hysteresis
10
°C
Junction to Ambient
38
°C/W
Note 1:
Absolute Maximum Ratings indicate limits beyond which 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 maximum allowable power dissipation is a function of the maximum junction temperature, T
, the junctions-to-ambient thermal resistance,
θ
JA
,
and the ambient temperature, T
. The maximum allowable power dissipation at any ambient temperature is calculated using: P
D_MAX
= (T
J_MAX
– T
A
)/θ
JA
. The
maximum power dissipations of 2.6W is determined using T
A
= 25°C,
θ
JA
= 38°C/W, and T
J_MAX
= 125°C.
Note 3:
The human body model is a 100 pF capacitor discharged through a 1.5k
resistor to each pin.
Typical Performance Characteristics
(Coilcraft MSS1038), V
IN
= 5V, V
OUT
= 1.2V, R
LOAD
= 1.2
, T
A
= 25°C for efficiency curves, loop gain plots and waveforms, and
T
J
= 25°C for all others.
Unless otherwise specified: C
IN
= C
OUT
= 100 μF, L = 1.0 μH
Efficiency vs. Load Current (V
IN
= 5V)
30014231
Efficiency vs. Load Current (V
IN
= 3.3V)
30014230
High-Side FET resistance vs. Temperature
30014252
Low-Side FET resistance vs. Temperature
30014253
www.national.com
4
L
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM20124MH/NOPB | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率: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 安裝風格:SMD/SMT |
| LM20124MHE | 制造商:Texas Instruments 功能描述:Conv DC-DC Single Step Down 2.95V to 5.5V 16-Pin TSSOP EP T/R |
| LM20124MHE/NOPB | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率: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 安裝風格:SMD/SMT |
| LM20124MHNOPB | 制造商:National Semiconductor 功能描述:Conv DC-DC Single Step Down 2.95V to 5.5V 16-Pin TSSOP EP Rail |
| LM20124MHX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:4A, 1MHz PowerWise㈢ Synchronous Buck Regulator |
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