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参数资料
型号： MAX1709
厂商： Maxim Integrated Products, Inc.
元件分类： DC/DC变换器
英文描述： 4A, Low-Noise, High-Frequency, Step-Up DC-DC Converter
中文描述： 4A、低噪声、高频、升压型DC-DC转换器
文件页数： 2/12页
文件大小： 502K
代理商： MAX1709
M
4A, Low-Noise, High-Frequency,
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 Narrow SO (derate 16.5mW/°C above +70°C).....1.3W
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 ........................................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETER
CONDITIONS
MIN
3.26
4.92
TYP
3.34
5.05
-0.25
1.240
1
MAX
3.42
5.17
-0.45
1.265
200
5.5
2.3
400
1.1
UNITS
3.3/5 = GND, I
SW
= 1A
3.3/5 = OUT, I
SW
= 1A
Output Voltage
V
FB
< 0.1V (Note 1)
V
Load Regulation
FB Regulation Voltage
FB Input Current
Output Voltage Adjust Range
Output Undervoltage Lockout
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
Measured between 1A < I
SW
< 3A (Note 2)
I
SW
= 1A
V
FB
= +1.5V
%/A
V
nA
V
V
kHz
V
V
μ
A
μ
A
1.215
2.5
2.0
40
(Note 3)
V
OUT
= 1.5V
I
OUT
< 1mA (Note 1), T
A
= +25
°
C (Note 4)
(Note 5)
V
SS/LIM
= 1V
V
FB
= 1.5V (Note 6)
0.9
0.7
4
200
3.2
5.0
440
V
ONB
= 3.6V
0.1
5
μ
A
V
LX
= V
ONB
= V
OUT
= +5.5V
0.1
40
μ
A
22
40
m
SS/LIM = open
SS/LIM = 150k
to GND
7.5
3.5
9
5
12
6.5
10
1.275
10
5
0.2
x
V
OUT
N-Channel Current Limit
A
RMS Switch Current
Reference Voltage
Reference Load Regulation
Reference Supply Rejection
A
RMS
I
REF
= 0
-1
μ
A
″
I
REF
″
50
μ
A
+2.5V
″
V
OUT
″
+5.5V
1.245
1.260
4
0.2
V
mV
mV
ONA,
ONB
, 3.3/5, 1.2V < V
OUT
< 5.5V
Input Low Level (Note 7)
CLK, 2.7V < V
OUT
< 5.5V
0.2
x
V
OUT
V
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