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参数资料
| 型号： | LM2670TADJEP |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PZFM7 |
| 封装： | PLASTIC, TO-220, 7 PIN |
| 文件页数： | 20/25页 |
| 文件大小： | 465K |
| 代理商： | LM2670TADJEP |
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
A =TJ = 25C. Unless otherwise specified VIN=12V for the 3.3V, 5V and Adjustable
versions and V
IN=24V for the 12V version, Sync pin open circuited..
Symbol
Parameter
Conditions
Typ
Min
Max
Units
DEVICE PARAMETERS
I
Q
Quiescent
Current
V
FEEDBACK = 8V
4.2
6
mA
For 3.3V, 5.0V, and ADJ Versions
V
FEEDBACK = 15V
For 12V Versions
I
STBY
Standby
Quiescent
Current
ON/OFF Pin = 0V
50
100/150
A
I
CL
Current Limit
4.5
3.8/3.6
5.25/5.4
A
I
L
Output Leakage
Current
V
IN = 40V, ON/OFF Pin = 0V
V
SWITCH =0V
V
SWITCH = 1V
16
200
15
A
mA
R
DS(ON)
Switch
On-Resistance
I
SWITCH =3A
0.15
0.17/0.29
f
O
Oscillator
Frequency
Measured at Switch Pin
260
225
280
kHz
D
Duty Cycle
Maximum Duty Cycle
91
%
Minimum Duty Cycle
0
%
I
BIAS
Feedback Bias
Current
V
FEEDBACK = 1.3V
ADJ Version Only
85
nA
V
ON/OFF
Threshold
Voltage
1.4
0.8
2.0
V
I
ON/OFF
ON/OFF Input
Current
ON/OFF Input = 0V
20
45
A
F
SYNC
Synchronization
Frequency
V
SYNC(Pin 5)=3.5V, 50% Duty Cycle
400
KHz
V
SYNC
SYNC Threshold
Voltage
1.4
V
θ
JA
Thermal
Resistance
T Package, Junction to Ambient
65
θ
JA
T Package, Junction to Ambient
45
θ
JC
T Package, Junction to Case
2
θ
JA
S Package, Junction to Ambient
56
C/W
θ
JA
S Package, Junction to Ambient
35
θ
JA
S Package, Junction to Ambient
26
θ
JC
S Package, Junction to Case
2
++
θ
JA
SD Package, Junction to Ambient
55
C/W
θ
JA
SD Package, Junction to Ambient
29
LM2670EP
Enhanced
Plastic
www.national.com
4
相关PDF资料 |
PDF描述 |
|---|---|
| LM2670T-5.0EP | 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PZFM7 |
| LM2670S-12EP | 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PSSO7 |
| LM2670SD-5.0EP | 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PDSO14 |
| LM2670SD-3.3EP | 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PDSO14 |
| LM2670T-12EP | 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PZFM7 |
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