參數(shù)資料
型號: LM3420AM5X-8.4/NOPB
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 電源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5
封裝: MINIATURE, SOT-23, 5 PIN
文件頁數(shù): 11/17頁
文件大小: 441K
代理商: LM3420AM5X-8.4/NOPB
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Input Voltage V(IN)
20V
Output Current
20 mA
Junction Temperature
150C
Storage Temperature
65C to +150C
Lead Temperature
Vapor Phase (60 seconds)
+215C
Infrared (15 seconds)
+220C
Power Dissipation (T
A = 25C)
300 mW
ESD Susceptibility (Note 3)
Human Body Model
1500V
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for methods on soldering
surface-mount devices.
Operating Ratings (Notes 1, 2)
Ambient Temperature Range
40C
≤ T
A
≤ +85C
Junction Temperature Range
40C
≤ T
J
+125C
Output Current
15 mA
LM3420-4.2
Electrical Characteristics
Specifications with standard type face are for T
J = 25C, and those with boldface type apply over full Operating Tempera-
ture Range. Unless otherwise specified, V(IN) = V
REG,VOUT = 1.5V.
Symbol
Parameter
Conditions
Typical
LM3420A-4.2
LM3420-4.2
Units
Limit
(Limits)
V
REG
Regulation Voltage
I
OUT = 1 mA
4.2
V
4.221/4.242
4.242/4.284
V(max)
4.179/4.158
4.158/4.116
V(min)
Regulation Voltage
I
OUT =1mA
±0.5/±1
±1/±2
%(max)
Tolerance
I
q
Quiescent Current
I
OUT =1mA
85
A
110/115
125/150
A(max)
G
m
Transconductance
20 A
≤ I
OUT
≤ 1 mA
3.3
mA/mV
I
OUT/
V
REG
V
OUT = 2V
1.3/0.75
1.0/0.50
mA/mV(min)
1mA
≤ I
OUT
≤ 15 mA
6.0
mA/mV
V
OUT = 2V
3.0/1.5
2.5/1.4
mA/mV(min)
A
V
Voltage Gain
1V
≤ V
OUT
≤ V
REG 1.2V (1.3)
1000
V/V
V
OUT/
V
REG
R
L = 200
550/250
450/200
V/V(min)
1V
≤ V
OUT
≤ V
REG 1.2V (1.3)
3500
V/V
R
L =2k
1500/900
1000/700
V/V(min)
V
SAT
Output Saturation
V(IN) = V
REG +100 mV
1.0
V
I
OUT = 15 mA
1.2/1.3
V(max)
I
L
Output Leakage
V(IN) = V
REG 100 mV
0.1
A
Current
V
OUT = 0V
0.5/1.0
A(max)
R
f
Internal Feedback
75
k
Resistor (Note 8)
94
k
(max)
56
k
(min)
E
n
Output Noise
I
OUT = 1 mA, 10 Hz
≤ f ≤ 10 kHz
70
V
RMS
Voltage
LM3420-4.2/LM3420-8.2/LM3420-8.4/LM3420-12.6/LM3420-16.8
www.national.com
3
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