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参数资料
| 型号： | LM20323AMH |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 6 A SWITCHING REGULATOR, 570 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | TSSOP-20 |
| 文件页数： | 14/20页 |
| 文件大小： | 492K |
| 代理商： | LM20323AMH |
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VIN to GND
-0.3V to +38V
BOOT to GND
-0.3V to +43V
BOOT to SW
-0.3V to +7V
SW to GND
-0.5V to +38V
SW to GND (Transient)
-1.5V (< 20 ns)
FB, EN, SS/TRK, COMP,
PGOOD to GND
-0.3V to +6V
VCC to GND
-0.3V to +8V
Storage Temperature
-65°C to 150°C
ESD Rating
Human Body Model (Note 2)
2kV
Operating Ratings
VIN to GND
+4.5V to +36V
Junction Temperature
40°C to + 125°C
Electrical Characteristics Unless otherwise stated, the following conditions apply: V
VIN = 12V. Limits in standard
type are for T
J = 25°C only, limits in bold face type apply over the junction temperature (TJ) range of -40°C to +125°C. Minimum
and maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely
parametric norm at T
J = 25°C, and are provided for reference purposes only.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
FB
Feedback Pin Voltage
V
VIN = 4.5V to 36V
0.792
0.800
0.808
V
R
HSW-DS(ON)
High-Side MOSFET On-Resistance
I
SW = 3A
130
225
m
R
LSW-DS(ON)
Low-Side MOSFET On-Resistance
I
SW = 3A
110
190
m
I
Q
Operating Quiescent Current
V
VIN = 4.5V to 36V
2.3
3
mA
I
SD
Shutdown Quiescent Current
V
EN = 0V
150
180
A
V
UVLO
VIN Under Voltage Lockout
Rising V
VIN
4
4.25
4.5
V
UVLO(HYS)
VIN Under Voltage Lockout Hysteresis
350
450
mV
V
VCC
VCC Voltage
I
VCC = -5 mA, VEN = 5V
5.5
V
I
SS
Soft-Start Pin Source Current
V
SS = 0V
2
4.5
7
A
V
TRKACC
Soft-Start/Track Pin Accuracy
V
SS = 0.4V
-10
5
15
mV
I
BOOT
BOOT Diode Leakage
V
BOOT = 4V
10
nA
V
F-BOOT
BOOT Diode Forward Voltage
I
BOOT = -100 mA
0.9
1.1
V
Powergood
V
FB(OVP)
Over Voltage Protection Rising Threshold
V
FB(OVP) / VFB
107
110
112
%
V
FB(OVP-HYS)
Over Voltage Protection Hysteresis
Δ
VFB(OVP) / VFB
2
3
%
V
FB(PG)
PGOOD Threshold, V
OUT Rising
V
FB(PG) / VFB
93
95
97
%
V
FB(PG-HYS)
PGOOD Hysteresis
ΔV
FB(PG) / VFB
2
3
%
T
PGOOD
PGOOD Delay
20
s
I
PGOOD(SNK)
PGOOD Low Sink Current
V
PGOOD = 0.5V
0.6
1
mA
I
PGOOD(SRC)
PGOOD High Leakage Current
V
PGOOD = 5V
5
200
nA
Oscillator
F
SW1
Switching Frequency
470
520
570
kHz
D
MAX
Maximum Duty Cycle
I
OUT = 3A
70
%
Error Amplifier
I
FB
Feedback Pin Bias Current
V
FB = 1V
50
nA
I
COMP(SRC)
COMP Output Source Current
V
FB = 0V
V
COMP = 0V
200
400
A
I
COMP(SNK)
COMP Output Sink Current
V
FB = 1.6V
V
COMP = 1.6V
200
350
A
g
m
Error Amplifier DC Transconductance
I
COMP = -50 A to +50 A
450
515
600
mho
A
VOL
Error Amplifier Voltage Gain
COMP pin open
2000
V/V
GBW
Error Amplifier Gain-Bandwidth Product
COMP pin open
7
MHz
3
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LM20323A
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