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参数资料
| 型号： | MAX1708 |
| 厂商： | Maxim Integrated Products, Inc. |
| 元件分类： | DC/DC变换器 |
| 英文描述： | High-Frequency, High-Power, Low-Noise, Step-Up DC-DC Converter |
| 中文描述： | 高频、大功率、低噪声、升压型DC-DC转换器 |
| 文件页数： | 2/13页 |
| 文件大小： | 332K |
| 代理商： | MAX1708 |
M
High-Frequency, High-Power, Low-Noise,
Step-Up DC-DC Converter
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ONA,
ONB
, OUT, SS/LIM, 3.3/5 to GND...............-0.3V to +6.0V
LX to PGND...........................................................-0.3V to +6.0V
FB, CLK, REF to GND.............................. -0.3V to (V
OUT
+ 0.3V)
PGND to GND .......................................................-0.3V to +0.3V
Continuous Power Dissipation (T
A
= +70°C)
16-Pin QSOP (derate 8.30mW/°C above +70°C). .......667mW
ELECTRICAL CHARACTERISTICS
(V
OUT
= V
CLK
= +3.6V, ONA =
ONB
= FB = GND,
T
A
= 0°C to +85°C
, unless otherwise noted. Typical values are at T
A
= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETER
CONDITIONS
MIN
3.26
4.90
TYP
3.34
5.05
-0.40
1.240
1
MAX
3.42
5.20
-0.60
1.265
200
5.5
UNITS
3.3
/5 = GND, I
SW
= 0.5A
3.3
/5 = OUT, I
SW
= 0.5A
Output Voltage
V
FB
< 0.1V (Note 1)
V
Load Regulation
FB Regulation Voltage (V
FB
)
FB Input Current
Output Voltage Adjust Range
Measured between 0.5A < I
SW
< 1.5A (Note 2)
I
SW
= 0.5A
V
FB
= +1.5V
%/A
V
nA
V
1.215
2.5
Output Undervoltage Lockout
(Note 3)
Rising and falling
2.0
2.3
V
Frequency in Startup Mode
Minimum Startup Voltage
Minimum Operating Voltage
Soft-Start Pin Current
OUT Supply Current
OUT Leakage Current In
Shutdown
LX Leakage Current
N-Channel Switch
On-Resistance
V
OUT
=1.5V
I
OUT
< 1mA, T
A
= +25
°
C (Note 4)
(Note 5)
V
SS/LIM
= 1V
V
FB
= 1.5V (Note 6)
40
400
1.1
kHz
V
V
μA
μA
0.9
0.7
4
200
3.2
5.0
300
V
ONB
= 3.6V
0.1
2
μA
V
LX
= V
ONB
= V
OUT
= +5.5V
1
25
μA
30
80
m
SS/LIM = open
SS/LIM = 150k
to GND
4.5
1.80
5.3
3.00
7.0
3.85
5
1.275
10
5
N-Channel Current Limit
A
RMS Switch Current
Reference Voltage
Reference Load Regulation
Reference Supply Rejection
A
RMS
V
mV
mV
I
REF
= 0
-1μA
≤
I
REF
≤
50μA
+2.5V
≤
V
OUT
≤
+5.5V
ONA,
ONB
,
3.3
/5, 1.2V < V
OUT
< 5.5V
CLK, 2.7V < V
OUT
< 5.5V
1.245
1.260
4
0.2
0.2
V
OUT
0.2
V
OUT
Input Low Level (Note 7)
V
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