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參數(shù)資料
| 型號： | MAX789 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 5V/3.3V/3V 5A Step-Down, PWM, Switch-Mode DC-DC Regulators(5A,5V步降,PWM,開關(guān)型DC-DC變換器) |
| 中文描述： | 5V/3.3V/3V、5A、降壓型、PWM、開關(guān)模式DC-DC穩(wěn)壓器 |
| 文件頁數(shù)： | 2/4頁 |
| 文件大?。?/td> | 49K |
| 代理商： | MAX789 |
M
5V /3.3V /3V 5A 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
MAX78_CCK .....................................0°C to +70°C
MAX78_ECK....................................-40°C to +85°C
J unction Temperature Ranges
MAX78_CCK ...................................0°C to +125°C
MAX78_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
PARAMETER
CONDITIONS
Start-Up Mode (Note 4)
3.5
6.5
90
5.0
8.5
MIN
TYP
MAX
UNITS
Switching Frequency Line Regulation
Error-Amplifier Voltage Gain
8V
≤
V
IN
≤
40V
1V
≤
V
C
≤
4V
Switch-Current Limit (Note 5)
Maximum Duty Cycle
5.5
85
A
%
T
j
< 0°C
T
j
≥
0°C
90
85
100
110
120
T
j
≥
0°C
V
OUT
= V
SENSE
= 0V (Note 5)
20
0.03
2000
Switching Frequency
kHz
0.10
%/V
V/V
Error-Amplifier Transconductance
3000
5000
9000
μmho
Error-Amplifier Source Current
V
SENSE
= V
OUT
- 10%
V
SENSE
= V
OUT
+ 10%
100
140
225
T
j
= +25°C
T
j
≤
+125°C
T
j
= +25°C
μA
Error-Amplifier Sink Current
I
SW
= 1A
0.6
1.0
1.7
1.85
mA
T
j
= +25°C
T
j
= +25°C
T
j
= +25°C
Switch-On Voltage (Note 1)
2.10
V
T
j
= +25°C
Supply Current (Note 3)
mA
V
IN
≤
40V, V
SENSE
= 5.5V
Normal Mode
8.5
7.3
3.5
11
8.0
4.8
Minimum Supply Voltage
V
T
j
= +25°C
T
j
= +25°C
V
IN
=
≤
25V, V
SW
= 0V
V
IN
= 40V, V
SW
= 0V
5
300
Switch-Off Leakage
10
500
μA
T
j
< 0°C
I
SW
= 5A
2.30
2.50
Input Supply Voltage Range
8.0
40.0
V
T
j
≥
0°C
T
j
< 0°C
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| MAX789CCK | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX789ECK | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX791C/D | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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