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參數(shù)資料
| 型號(hào)： | LM20134MHE |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 4A, PowerWise㈢ Synchronous Buck Regulator with Input Synchronization |
| 中文描述： | 7.9 A SWITCHING REGULATOR, 460 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | TSSOP-16 |
| 文件頁(yè)數(shù)： | 4/22頁(yè) |
| 文件大小： | 608K |
| 代理商： | LM20134MHE |
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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 1.5 k
resistor to each pin.
Typical Performance Characteristics
(Coilcraft MSS1038), V
IN
= 5V, V
OUT
= 1.2V, R
LOAD
= 1.2
, f
SW
= 1 MHz, 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, f
SW
= 1 MHz)
30030431
Efficiency vs. Load Current (V
IN
= 3.3V, f
SW
= 1 MHz)
30030430
Efficiency vs. Load Current (V
IN
= 5V, f
SW
= 500 kHz)
30030449
Efficiency vs. Load Current (V
IN
= 3.3V, f
SW
= 500 kHz)
30030448
www.national.com
4
L
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| LM20134MHE/NOPB | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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 |
| LM20134MHX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:4A, PowerWise㈢ Synchronous Buck Regulator with Input Synchronization |
| LM20134MHX/NOPB | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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 |
| LM20134Q | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LM20134/LM20134Q 4A, PowerWise Synchronous Buck Regulator with Input |
| LM20136 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:6A, Synchronous Buck Regulator with Input Synchronization |
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