参数资料
型号: MAX8537EVKIT
厂商: Maxim Integrated Products
文件页数: 3/23页
文件大小: 0K
描述: EVAL KIT FOR MAX8537
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: 特殊用途 DC/DC,DDR 存储器电源
输出及类型: 3,非隔离
功率 - 输出: 60W
输出电压: 2.5V,1.25V,1.25V
电流 - 输出: 20A,8A,15mA
输入电压: 12V
稳压器拓扑结构: 降压
频率 - 开关: 400kHz
板类型: 完全填充
已供物品:
已用 IC / 零件: MAX8537
Dual-Synchronous Buck Controllers for Point-of-
Load, Tracking, and DDR Memory Power Supplies
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 12V, EN_ = VL, BST_ = 6V, LX_ = 1V, VL load = 0mA, C VL = 10μF (ceramic), REFIN = 1.25V, PGND = AGND = FB_ = ILIM_ =
0V, C SS = 10nF, C VTTR = 1μF, R FREQ = 20k ? , DH_ = open, DL_ = open, POK_ = open, circuit of Figure 1, T A = 0°C to +85°C, unless
otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
R FREQ = 100k ?
2.4
4
Minimum Duty Cycle
DH_ Minimum Off-Time
DH_ Minimum On-Time
R FREQ = 20k ?
R FREQ = 14.3k ?
12
16
140
120
18
25
200
%
ns
ns
ERROR AMPLIFIER
FB_ Input Bias Current
V FB _ = 0.8V
250
nA
FB1 Input-Voltage Set Point
FB2 Input-Voltage Set Point
Op-Amp Open-Loop Voltage
Gain
Over line and load
MAX8538
MAX8537/MAX8539, REFIN = 0.9V
COMP_ = 1.3V to 2.3V
0.792
0.792
0.894
72
0.800
0.800
0.900
>80
0.808
0.808
0.906
V
V
dB
Op-Amp Gain Bandwidth
Op-Amp Output-Voltage Slew
Rate
DRIVERS
Break-Before-Make Time
25
15
30
MHz
V/μs
ns
DH1, DH2 On-Resistance in Low
State
DH1, DH2 On-Resistance in High
State
DL1, DL2 On-Resistance in Low
State
DL1, DL2 On-Resistance in High
State
0.9
1.3
0.7
1.6
2.5
2.5
1.5
2.8
?
?
?
?
LOGIC INPUTS (EN_)
Input Low Level
Input High Level
4.5V < VL < 5.5V
4.5V < VL < 5.5V
2.4
0.8
V
V
Input Bias Current
0V to 5.5V
-1
+0.1
+1
μA
VTTR
VTTR Output Voltage Range
Source or sink 15mA
0.5
2.5
V
VTTR Output Accuracy
-15mA ≤ I VTTR ≤ +15mA, REFIN = 0.9V or 1.25V
-1.0
REFIN
+1.0
%
REFIN
REFIN Input Bias Current
REFIN = 0.9V or 1.25V
-250
+250
nA
_______________________________________________________________________________________
3
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