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參數(shù)資料
| 型號： | MAX777LEPA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Low-Voltage Input, 3V/3.3V/5V/ Adjustable Output, Step-Up DC-DC Converters |
| 中文描述： | 1 A SWITCHING REGULATOR, 150 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大小： | 117K |
| 代理商： | MAX777LEPA |
M
Low-Voltage Input, 3V /3.3V /5V /
Adjustable Output, S tep-Up DC-DC Converters
_______________________________________________________________________________________
3
Note 2:
Output in regulation, V
OUT
= V
OUT
(nominal) ±4%.
Note 3:
At high V
IN
to V
OUT
differentials, the maximum load current is limited by the maximum allowable power dissipation in the
package (see Absolute Maximum Ratings).
Note 4:
Minimum value is production tested. Maximum value is guaranteed by design and is not production tested.
Note 5:
V
OUT
is set to a target value of +5V by 0.1% external feedback resistors. V
OUT
is measured to be 5V ±2.5% to guarantee the
error comparator trip point.
Note 6:
Start-Up guaranteed under these load conditions.
PARAMETER
Maximum Switch On Time
MIN
TYP
MAX
12.6
1.2
2.2
0.21
0.31
0.50
202.5
10
0.1
0.1
UNITS
Switch Saturation Voltage
μs
0.275
0.33
0.50
4.0
5.9
-0.3
μs
%/°C
Current Limit
Current-Limit Temperature
Coefficient
1.0
A
Minimum Switch Off Time
V
V
Rectifier Forward Voltage Drop
SHDN
Threshold
Error-Comparator Trip Point
FB Pin Bias Current
Switch Off Leakage Current
Rectifier Off Leakage Current
197.5
207.5
40
V
IN
/2 + 0.25
mV
nA
μA
μA
V
1.20
1.6
SHDN
Enable Delay
150
μs
CONDITIONS
V
IN
= 1V
MAX777L, MAX779L
MAX778
I
SW
= 400mA
I
SW
= 600mA
I
SW
= 1000mA
MAX779L, over operating input voltage (Note 5)
MAX779L, V
FB
= 0.3V
I
SW
= 400mA
I
SW
= 600mA
I
SW
= 1000mA
V
IN
= 2.5V
V
IN
= 1.8V
V
IN
= 1V to 4.5V
V
IN
= 2.5V
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= +2.5V, I
LOAD
= 0mA, L = 22μH, C
OUT
= 100μF,
SHDN
and ILIM connected to IN, AGND connected to PGND, T
A
= T
MIN
to T
MAX
,
typical values are at T
A
= +25°C, unless otherwise noted.)
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