參數(shù)資料
型號： LM2677T-3.3
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： SENSOR MOD GEAR TOOTH 1.5
中文描述： 8.75 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, ZFM7
封裝： TO-220, 7 PIN
文件頁數(shù)： 4/26頁
文件大?。?/td> 847K
代理商： LM2677T-3.3
All Output Voltage Versions
Electrical Characteristics
Limits appearing in
bold type face
apply over the entire junction temperature range of operation, 40C to 125C. Specifica-
tions appearing in normal type apply for T
= T
= 25C. Unless otherwise specified V
IN
=12V for the 3.3V, 5V and Adjustable
versions and V
IN
=24V for the 12V version, Sync pin open circuited..
Symbol
Parameter
Conditions
DEVICE PARAMETERS
I
Q
Quiescent
Current
V
FEEDBACK
= 8V
For 3.3V, 5.0V, and ADJ Versions
V
FEEDBACK
= 15V
For 12V Versions
I
STBY
Standby
Quiescent
Current
I
CL
Current Limit
I
L
Output Leakage
Current
V
SWITCH
= 0V
V
SWITCH
= 1V
R
DS(ON)
Switch
On-Resistance
f
O
Oscillator
Frequency
D
Duty Cycle
Maximum Duty Cycle
Minimum Duty Cycle
I
BIAS
Feedback Bias
Current
ADJ Version Only
V
ON/OFF
ON/OFF
Threshold
Voltage
I
ON/OFF
ON/OFF Input
Current
F
SYNC
Synchronization
Frequency
V
SYNC
SYNC Threshold
Voltage
θ
JA
Thermal
Resistance
(Note 5)
θ
JA
T Package, Junction to Ambient
(Note 6)
θ
JC
T Package, Junction to Case
θ
JA
S Package, Junction to Ambient
(Note 7)
θ
JA
S Package, Junction to Ambient
(Note 8)
θ
JA
S Package, Junction to Ambient
(Note 9)
θ
JC
S Package, Junction to Case
θ
JA
SD Package, Junction to Ambient
(Note 10)
θ
JA
SD Package, Junction to Ambient
(Note 11)
Typ
Min
Max
Units
4.2
6
mA
ON/OFF Pin = 0V
50
100/
150
μA
7
6.1/
5.75
8.3/
8.75
200
15
A
V
IN
= 40V, ON/OFF Pin = 0V
1
μA
6
mA
I
SWITCH
= 5A
0.12
0.14/
0.225
Measured at Switch Pin
260
225
280
kHz
91
0
%
%
V
FEEDBACK
= 1.3V
85
nA
1.4
0.8
2.0
V
ON/OFF Input = 0V
20
45
μA
V
SYNC
(Pin 5)=3.5V, 50% Duty Cycle
400
KHz
1.4
V
T Package, Junction to Ambient
65
45
2
56
C/W
35
26
2
55
++
C/W
29
L
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LM2677T-5.0 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
LM2677T-5.0/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
LM2677T-ADJ 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
LM2677T-ADJ/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
LM2678 制造商:Texas Instruments 功能描述:
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