参数资料
型号: MAX8546EVKIT
厂商: Maxim Integrated Products
文件页数: 3/18页
文件大小: 0K
描述: EVAL KIT FOR MAX8546
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: DC/DC,步降
输出及类型: 1,非隔离
输出电压: 2.5V
电流 - 输出: 6A
输入电压: 10 ~ 24V
稳压器拓扑结构: 降压
频率 - 开关: 300kHz
板类型: 完全填充
已供物品:
已用 IC / 零件: MAX8546
Low-Cost, Wide Input Range, Step-Down
Controllers with Foldback Current Limit
ELECTRICAL CHARACTERISTICS (continued)
(V IN = VL = V CC = 5V, T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ERROR AMPLIFIER
FB Regulation Voltage
2.7V < V CC < 5.5V, 0 ° C to +85 ° C
2.7V < V CC < 5.5V, -40 ° C to +85 ° C
0.787
0.782
0.800
0.800
0.815
0.815
V
FB to COMP/EN Gain
4000
V /V
FB to COMP/EN
Transconductance
FB Input Bias Current
COMP/EN Source Current
Current-Limit Threshold Voltage
(Across Low-Side MOSFET)
Foldback Current-Limit Threshold
Voltage (Across Low-Side
MOSFET) When Output is Short
-5μA < I COMP/EN < +5μA
V FB = 0.88V
V COMP/EN = 0V
LX to GND, MAX8545, MAX8548,
V FB = 0.8V
LX to GND MAX8546, V FB = 0.8V
LX to GND, V FB = 0V,
MAX8545, MAX8548
MAX8546, LX to GND, V FB = 0
70
15
-355
-185
-105
-53
108
1
46
-320
-165
-75
-38
160
2
100
-280
-140
-45
-22
μS
μA
μA
mV
mV
MOSFET DRIVERS
Break-Before-Make Time
Rising edge, DH going low to DL going high
Falling edge, DL going low to DH going high
96
28
ns
DH On-Resistance in Low State
DH On-Resistance in High State
DL On-Resistance in Low State
DL On-Resistance in High State
1.6
2.5
1.1
2.5
4
5.5
2.5
5.5
Ω
Ω
Ω
Ω
BST Leakage Current
LX Leakage Current
V BST = 33V, V LX = 28V, V FB = 0.88V
V BST = 33V, V LX = 28V, V FB = 0.88V
0
33
50
100
μA
μA
Note 1: Thermal shutdown disables the buck regulator when the die reaches this temperature. Soft-start is reset but the VL regulator
remains on.
_______________________________________________________________________________________
3
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