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参数资料
| 型号： | MAX5090CATE/V+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/17页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 2A 16WQFN |
| 产品变化通告： | Product Discontinuation 28/Nov/2011 |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.27 V ~ 11 V |
| 输入电压： | 6.5 V ~ 76 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 127kHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 16-TQFN-EP（5x5） |
2A, 76V, High-Efficiency MAXPower Step-Down
DC-DC Converters
ELECTRICAL CHARACTERISTICS (continued)
(V IN = +12V, V ON/ OFF = +12V, V SYNC = 0V, I OUT = 0, T A = T J = -40°C to +125°C, unless otherwise noted. Typical values are at
T A = +25°C. See the Typical Operating Circuit .) (Note 1)
PARAMETER
Soft-Start Reference Voltage
SYMBOL
V SS(REF)
CONDITIONS
MIN
1.23
TYP
1.46
MAX
1.65
UNITS
V
INTERNAL SWITCH/CURRENT LIMIT
Peak Switch Current Limit
I LIM
(Note 3)
2.4
3.3
5.0
A
Switch Leakage Current
Switch On-Resistance
I OL
R DS(ON)
V IN = 76V, V ON/ OFF = 0V, V LX = 0V
I SWITCH = 1A
-10
0.26
+10
0.4
μA
?
PFM Threshold
PFM Threshold
FB Input Bias Current
I PFM
I PFM
I B
Minimum switch current in any cycle
Minimum switch current in any cycle at T J ≤ +25°C
(Note 4)
MAX5090C, V FB = 1.2V
1
14
-150
60
+0.1
300
300
+150
mA
mA
nA
ON/ OFF CONTROL INPUT
ON/ OFF Input-Voltage
Threshold
V ON/ OFF
Rising trip point
1.180
1.38
1.546
V
ON/ OFF Input-Voltage
Hysteresis
V HYST
100
mV
ON/ OFF Input Current
I ON/ OFF
V ON/ OFF = 0V to V IN
10
100
nA
OSCILLATOR/SYNCHRONIZATION
Oscillator Frequency
Synchronization
f 0SC
f SYNC
106
119
127
150
200
kHz
kHz
Maximum Duty Cycle
D MAX
V IN = 6.5V to 76V, V OUT ≤ 11V
80
95
%
SYNC High-Level Voltage
SYNC Low-Level Voltage
SYNC Minimum Pulse Width
2.0
0.8
350
V
V
ns
SYNC Input Leakage
-1
+1
μA
INTERNAL VOLTAGE REGULATOR
Regulator Output Voltage
VD
V IN = 9V to 76V, I OUT = 0
7.0
7.8
8.4
V
Dropout Voltage
6.5V ≤ V IN ≤ 8.5V, I OUT = 15mA
0.5
V
Load Regulation
? VD/ ? I VD
0 to 15mA
10
?
PACKAGE THERMAL CHARACTERISTICS
Thermal Resistance
(Junction to Ambient)
θ JA
TQFN package (JEDEC 51)
30
°C/W
THERMAL SHUTDOWN
Thermal-Shutdown Junction
Temperature
Thermal-Shutdown
Hysteresis
T SH
T HYST
Temperature rising
+175
20
°C
°C
Note 1: All limits at -40°C are guaranteed by design, not production tested.
Note 2: For total current consumption during switching (at no load), also see the Typical Operating Characteristics .
Note 3: Switch current at which the current-limit circuit is activated.
Note 4: Limits are guaranteed by design.
_______________________________________________________________________________________
3
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