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參數(shù)資料
| 型號： | MAX728CCK |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 5V/3.3V/3V 2A Step-Down, PWM, Switch-Mode DC-DC Regulators |
| 中文描述： | 3.2 A SWITCHING REGULATOR, 120 kHz SWITCHING FREQ-MAX, PZFM5 |
| 封裝： | TO-220, 5 PIN |
| 文件頁數(shù)： | 2/4頁 |
| 文件大?。?/td> | 39K |
| 代理商： | MAX728CCK |
M
5V /3.3V /3V 2A S tep-Down, PWM,
S witc h-Mode DC-DC Regulators
2
_______________________________________________________________________________________
Input Voltage..................................................45V
Switch Voltage with Respect to Input Voltage................50V
Switch Voltage with Respect to GND Pin (V
negative)
(Note 1) .....................................................35V
SENSE Pin Voltage ...................................-0.3V, +10V
Operating Temperature Ranges
MAX72_CCK .....................................0°C to +70°C
MAX72_ECK....................................-40°C to +85°C
J unction Temperature Ranges:
MAX72_CCK ....................................0°C to +125°C
MAX72_ECK ..................................-40°C to +125°C
Storage Temperature Range ...................-65°C to +160°C
Lead Temperature (soldering, 10sec)....................+300°C
ELECTRICAL CHARACTERISTICS
(V
IN
= 25V, T
j
= T
MIN
to T
MAX
, unless otherwise noted.)
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.
ABSOLUTE MAXIMUM RATINGS
mA
3.5
3.5
2.6
4.8
5.0
3.2
Start-Up Mode (Note 4)
V
7.3
8.0
Normal Mode
Minimum Supply Voltage
8.5
11
V
IN
≤
40V, V
SENSE
= 5.5V
T
j
= +25°C
μA
250
T
j
= +25°C
T
j
= +25°C
V
IN
= 40V, V
SW
= 0V
Switch-Off Leakage
T
j
= +25°C
T
j
= +25°C
mA
T
j
≤
+125°C
150
0.6
1.0
1.7
V
SENSE
= V
OUT
+ 10%
V
IN
= 25V, V
SW
= 0V
Error-Amplifier Sink Current
μA
T
j
= +25°C
100
140
225
V
SENSE
= V
OUT
- 10%
Error-Amplifier Source Current
μmho
1.7
3000
5000
9000
I
SW
= 2A
Error-Amplifier Transconductance
V/V
V
1.2
2000
1V
≤
V
C
≤
4V
I
SW
= 0.5A
Error-Amplifier Voltage Gain
Switch-On Voltage (Note 2)
%/V
0.03
0.10
kHz
Switching Frequency
20
V
OUT
= V
SENSE
= 0V (Note 5)
8V
≤
V
IN
≤
40V
85
120
T
j
= +25°C
T
j
= +25°C
90
100
110
%
85
90
Maximum Duty Cycle
Switching Frequency Line Regulation
UNITS
MIN
TYP
MAX
CONDITIONS
PARAMETER
Supply Current (Note 3)
2.0
A
Switch-Current Limit (Note 5)
V
8.0
40.0
Input Supply Voltage Range
T
j
≥
0°C
T
j
< 0°C
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