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参数资料
| 型号： | MAX724CCK |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/13页 |
| 文件大小： | 0K |
| 描述： | IC REG MULTI CONFIG ADJ TO220-5 |
| 标准包装： | 50 |
| 类型： | 降压（降压），升压（升压），反相，回扫 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 2.5 V ~ 35 V |
| 输入电压： | 8 V ~ 40 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 100kHz |
| 电流 - 输出： | 5A |
| 同步整流器： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-220-5 |
| 包装： | 管件 |
| 供应商设备封装： | TO-220-5 |
5A/2A Step-Down, PWM,
Switch-Mode DC-DC Regulators
ELECTRICAL CHARACTERISTICS (continued)
(V IN = 25V, T j = T MIN to T MAX , unless otherwise noted.)
PARAMETER
Error-Amplifier Voltage Gain
1V ≤ V C ≤ 4V
CONDITIONS
T j = +25°C
MIN
TYP MAX
2000
UNITS
V/V
Error-Amplifier Transconductance
T j = +25°C
3000 5000 9000
μmho
Error-Amplifier Source Current
Error-Amplifier Sink Current
Feedback Pin Bias Current
V FB = 2V
V FB = 2.5V
V FB = VREF
T j = +25°C
T j = +25°C
100
0.6
140
1.0
0.5
225
1.7
2
μA
mA
μA
Reference Voltage
V C = 2V
VREF (nominal) = 2.21V
T j = +25°C
2.155 2.210 2.265
±0.5 ±1.5
V
Reference Voltage Tolerance
All conditions of input voltage, output voltage,
temperature and load current
±1.0
±2.5
%
Reference Voltage Line Regulation
VC Voltage at 0% Duty Cycle
Thermal Resistance,
Junction to Case (Note 6)
8V ≤ V IN ≤ 40V
MAX724
MAX726
T j = +25°C
T j = T MIN to T MAX
0.005 0.02
1.5
-4
2.5
4.0
%/V
V
mV/°C
°C/W
Note 1: Do not exceed switch-to-input voltage limitation.
Note 2: For switch currents between 1A and 5A (2A for MAX726), maximum switch-on voltage can be calculated via linear
interpolation.
Note 3: By setting the feedback pin (FB) to 2.5V, the V C pin is forced to its low clamp level and the switch duty cycle is forced to
zero, approximating the zero load condition.
Note 4: For proper regulation, total voltage from V IN to GND must be ≥ 8V after start-up.
Note 5: To avoid extremely short switch-on times, the switch frequency is internally scaled down when V FB is less than 1.3V. Switch-
current limit is tested with V FB adjusted to give a 1μs minimum switch-on time.
Note 6: Guaranteed, not production tested.
__________________________________________Typical Operating Characteristics
MAX724
110
STEP-DOWN CONVERTER EFFICIENCY
vs. OUTPUT CURRENT
16
SUPPLY CURRENT
vs. JUNCTION TEMPERATURE
20
QUIESCENT SUPPLY CURRENT
vs. INPUT VOLTAGE
100
90
CIRCUIT OF FIGURE 2
V OUT = 12V, V IN = 20V
14
12
10
CIRCUIT OF FIGURE 2
V IN = 25V, V OUT = 5V
I OUT = 1mA
18
16
14
12
DEVICE NOT SWITCHING
V C = 1V
80
8
10
70
60
V OUT = 5V, V IN = 15V
6
4
2
8
6
4
2
50
0
1
2
3
4
5
6
0
-40 -25
0
25
50
75
100
125
0
0
10
20
30
40
OUTPUT CURRENT (A)
JUNCTION TEMPERATURE (°C)
V IN INPUT VOLTAGE (V)
_______________________________________________________________________________________
3
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相关代理商/技术参数 |
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|---|---|
| MAX724CCM | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Current-Mode SMPS Controller |
| MAX724CKS | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Current-Mode SMPS Controller |
| MAX724ECK | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX724ECK-SL | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX724ECM | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Current-Mode SMPS Controller |
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