参数资料
型号: MAX1953EVKIT
厂商: Maxim Integrated Products
文件页数: 3/22页
文件大小: 0K
描述: EVAL KIT FOR MAX1953
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: 2,非隔离
输出电压: 1.5V,1.8V
电流 - 输出: 5A,3A
输入电压: 3 ~ 5.5 V
稳压器拓扑结构: 降压
频率 - 开关: 300kHz,1MHz
板类型: 完全填充
已供物品:
已用 IC / 零件: MAX1953,MAX1954
Low-Cost, High-Frequency, Current-Mode PWM
Buck Controller
ELECTRICAL CHARACTERISTICS (continued)
(V IN = 5V, V BST - V LX = 5V, T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)
PARAMETER
ILIM Input Impedance
Current-Limit Threshold
CONDITIONS
MAX1953 only
V PGND - V LX , ILIM = GND (MAX1953 only)
V PGND - V LX , ILIM = open (MAX1953 only)
V PGND - V LX , ILIM = IN (MAX1953 only)
V PGND – V LX (MAX1954/MAX1957 only)
MIN
50
85
190
290
190
TYP
125
105
210
320
210
MAX
200
125
235
350
235
UNITS
k ?
mV
OSCILLATOR
Switching Frequency
Maximum Duty Cycle
Minimum Duty Cycle
MAX1953
MAX1954/MAX1957
Measured at DH
MAX1953, measured at DH
MAX1954/MAX1957, measured at DH
0.8
240
86
1
300
89
15
4.5
1.2
360
96
18
5.5
MHz
kHz
%
%
SOFT-START
Soft-Start Period
MAX1953
MAX1954/MAX1957
4
3.4
ms
FET DRIVERS
DH On-Resistance, High State
DH On-Resistance, Low State
DL On-Resistance, High State
DL On-Resistance, Low State
LX, BST Leakage Current
LX, BST, HSD Leakage Current
V BST = 10.5V, V LX = V IN = 5.5V,
MAX1953/MAX1957
V BST = 18.7V, V LX = 13.2V, V IN = 5.5V
V HSD = 13.2V (MAX1954 only)
2
1.5
2
0.8
3
3
3
2
20
30
?
?
?
?
μA
μA
THERMAL PROTECTION
Thermal Shutdown
Thermal Shutdown Hysteresis
Rising temperature
160
15
° C
° C
SHUTDOWN CONTROL
COMP Logic Level Low
COMP Logic Level High
COMP Pullup Current
3V < V IN < 5.5V
3V < V IN < 5.5V
0.8
0.25
100
V
V
μA
Note 1: Specifications to -40°C are guaranteed by design and not production tested.
Note 2: HSD and IN are externally connected for applications where V HSD < 5.5V.
_______________________________________________________________________________________
3
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