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: 4/12页
文件大小: 502K
代理商: MAX1709
Note 1:
Output voltage is specified at 1A switch current I
SW
, which is equivalent to approximately 1A
(V
IN
/ V
OUT
) of load current.
Note 2:
Load regulation is measured by forcing specified switch current and straight-line calculation of change in output voltage in
external feedback mode. Note that the equivalent load current is approximately I
SW
(V
IN
/ V
OUT
).
Note 3:
Until undervoltage lockout is reached, the device remains in startup mode. Do not apply full load until this voltage is
reached.
Note 4:
Startup is tested with Figure 1
s circuit. Output current is measured when both the input and output voltages are applied.
Note 5:
Minimum operating voltage. The MAX1709 is bootstrapped and will operate down to a 0.7V input once started.
Note 6:
Supply current is measured from the OUT pin to the output voltage (+3.3V). This correlates directly with actual input supply
current but is reduced in value according to the step-up ratio and efficiency.
Note 7:
ONA and
ONB
inputs have approximately 0.15V hysteresis.
Note 8:
Guaranteed by design, not production tested.
Note 9:
Specifications to -40
°
C are guaranteed by design, not production tested.
M
4A, Low-Noise, High-Frequency,
Step-Up DC-DC Converter
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
OUT
= V
CLK
= +3.6V, ONA =
ONB
= FB = GND,
T
A
= -40
°
C to +85
°
C,
unless otherwise noted.) (Note 9)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ONA,
ONB
, 3.3/5, 1.2V < V
OUT
< 5.5V
0.2
×
V
OUT
V
Input Low Level (Note 7)
CLK, 2.7V < V
OUT
< 5.5V
0.2
×
V
OUT
ONA,
ONB
, 3.3/5, 1.2V < V
OUT
< 5.5V
0.8
×
V
OUT
Input High Level
CLK, V
OUT
= 5.5V
0.8
×
V
OUT
V
Logic Input Current
Internal Oscillator Frequency
Maximum Duty Cycle
ONA,
ONB
, CLK, 3.3/5
1
μ
A
kHz
%
500
80
700
95
External Clock Frequency
Range
350
1000
kHz
CLK/SEL Pulse Width
CLK/SEL Rise/Fall Time
(Note 8)
(Note 8)
100
ns
ns
50
相关PDF资料
PDF描述
MAX1709EVKIT MAX1709 Evaluation Kit
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MAX170CCPA Serial Output 5.6us 12-Bit A/D Converter
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