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參數(shù)資料
| 型號(hào)： | Si4826DY |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | N-Channel FET Synchronous Buck Regulator Controller for Low Output Voltages |
| 中文描述： | N溝道場(chǎng)效應(yīng)管同步降壓穩(wěn)壓控制器輸出電壓低 |
| 文件頁數(shù)： | 3/22頁 |
| 文件大小： | 602K |
| 代理商： | SI4826DY |
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 1)
V
CC
BOOTV
Junction Temperature
Storage Temperature
Soldering Information
Lead Temperature
(soldering, 10sec)
7V
21V
150C
65C to 150C
260C
Infrared or Convection (20sec)
ESD Rating
235C
2 kV
Operating Ratings
Supply Voltage (V
CC
)
Junction Temperature Range
Thermal Resistance (
θ
JA
)
4.5V to 5.5V
40C to +125C
155C/W
Electrical Characteristics
V
CC
= 5V unless otherwise indicated. Typicals and limits appearing in plain type apply for T
A
=T
J
=+25C. Limits appearing in
boldface type apply over full Operating Temperature Range. Datasheet min/max specification limits are guaranteed by design,
test, or statistical analysis.
Symbol
Parameter
Conditions
Min
0.591
0.591
0.591
0.589
0.589
0.589
Typ
0.6
0.6
0.6
0.6
0.6
0.6
4.2
3.6
Max
0.609
0.609
0.609
0.609
0.609
0.609
Units
V
FB_ADJ
FB Pin Voltage
V
CC
= 4.5V, 0C to +125C
V
CC
= 5V, 0C to +125C
V
CC
= 5.5V, 0C to +125C
V
CC
= 4.5V, 40C to +125C
V
CC
= 5V, 40C to +125C
V
CC
= 5.5V, 40C to +125C
Rising
Falling
SD = 5V, FB = 0.55V
Fsw = 600kHz
SD = 5V, FB = 0.65V
Fsw = 600kHz
SD = 0V
FB Voltage Going Up
FB Voltage Going Down
V
V
ON
UVLO Thresholds
V
I
Q-V5
Operating V
CC
Current
1
1.5
2
mA
0.8
1.7
2.2
Shutdown V
CC
Current
PWGD Pin Response Time
PWGD Pin Response Time
SD Pin Internal Pull-up Current
SS Pin Source Current
0.15
0.4
6
6
20
0.7
mA
μs
μs
μA
t
PWGD1
t
PWGD2
I
SD
I
SS-ON
SS Voltage = 2.5V
0C to +125C
-40C to +125C
SS Voltage = 2.5V
8
5
11
11
15
15
μA
I
SS-OC
SS Pin Sink Current During Over
Current
I
SEN
Pin Source Current Trip
Point
ERROR AMPLIFIER
GBW
Error Amplifier Unity Gain
Bandwidth
G
Error Amplifier DC Gain
SR
Error Amplifier Slew Rate
I
FB
FB Pin Bias Current
95
μA
I
SEN-TH
0C to +125C
-40C to +125C
35
28
50
50
65
65
μA
5
MHz
60
6
15
30
2.8
0.8
1.2
3.2
dB
V/μA
FB = 0.55V
FB = 0.65V
V
EAO
= 2.5, FB = 0.55V
V
EAO
= 2.5, FB = 0.65V
Minimum
Maximum
0
0
100
155
nA
I
EAO
EAO Pin Current Sourcing and
Sinking
Error Amplifier Maximum Swing
mA
V
EA
V
L
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