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参数资料
| 型号： | MAX8539EEI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/23页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR BUCK DUAL 28-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 应用： | 控制器，DDR |
| 输入电压： | 4.5 V ~ 23 V |
| 输出数： | 2 |
| 输出电压： | 0.8 V ~ 3.6 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-QSOP |
| 供应商设备封装： | 28-QSOP |
| 包装： | 管件 |
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
REFIN Input Voltage Range
REFIN Undervoltage-Lockout Trip
Level
CONDITIONS
Rising and falling edge, hysteresis = 15mV
MIN
0.5
0.4
TYP
0.45
MAX
2.5
0.5
UNITS
V
V
OUTPUT-VOLTAGE FAULT COMPARATORS
Upper FB2 Fault Threshold
Lower FB2 Fault Threshold
Upper FB1 Fault Threshold
Lower FB1 Fault Threshold
Rising voltage, hysteresis = 15mV
Falling voltage, hysteresis = 15mV
Rising voltage, hysteresis = 15mV
Falling voltage, hysteresis = 15mV
115
68
115
68
117
70
117
70
120
72
120
72
% of
REFIN
% of
REFIN
% of
0.8V
% of
0.8V
POWER-OK OUTPUT (POK_)
POK_ Delay
64
Clock
cycles
Upper FB2 POK_ Threshold
Lower FB2 POK_ Threshold
Upper FB1 POK_ Threshold
Lower FB1 POK_ Threshold
POK_ Output Low Level
POK_ Output High Leakage
Rising voltage, hysteresis = 20mV
Falling voltage, hysteresis = 20mV
Rising voltage, hysteresis = 20mV
Falling voltage, hysteresis = 20mV
I SINK = 2mA
POK_ = 5.5V
110
86
110
86
112
88
112
88
114
90
114
90
0.4
1
% of
REFIN
% of
REFIN
% of
0.8V
% of
0.8V
V
μA
ELECTRICAL CHARACTERISTICS (Note 2)
(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 = -40°C to +85°C,
unless otherwise noted.)
PARAMETER
V+ Operating Range
FB_ Input-Voltage Set Point
FB2 Input-Voltage Set Point
VTTR Output Accuracy
CONDITIONS
VL regulator drops out below 5.5V (Note 1)
Over line and load
MAX8537/MAX8539, REFIN = 0.9V
-15mA < I VTTR ≤ +15mA, REFIN = 0.9V or 1.25V
MIN
4.75
0.788
0.891
-1
TYP
0.800
0.900
REFIN
MAX
23.00
0.812
0.909
+1
UNITS
V
V
V
%
Note 1: Operating supply range is guaranteed by the VL line-regulation test. User must short V+ to VL if a fixed 5V supply is used
(i.e., if V+ is less than 5.5V).
Note 2: Specifications to -40°C are guaranteed by design, not production tested.
4
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8539EEI+ | 功能描述:DC/DC 开关控制器 Dual-Synchronous Buck Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX8539EEI+T | 功能描述:DC/DC 开关控制器 Dual-Synchronous Buck Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX8539EEI-T | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX853C/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX853CSA | 功能描述:电荷泵 RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
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