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参数资料
| 型号： | MAX1917 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies |
| 中文描述： | 跟踪、可吸入/源出电流、同步buck控制器，用于DDR存储器及端接电源 |
| 文件页数： | 4/18页 |
| 文件大小： | 336K |
| 代理商： | MAX1917 |
M
Tracking, Sinking and Sourcing, Synchronous Buck
Controller for DDR Memory and Termination Supplies
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 12V, V
EN/HSD
= V
DDR
= 2.5V, C
VL
= 4.7μF, C
VTTR
= 1μF, C
REF
= 0.22μF, V
FSEL
= 0, ILIM = VL, PGND = LX = POK = GND,
BST = VL. Specifications are for
T
A
= 0
°
C to +85
°
C
. Typical values are at T
A
= +25
°
C, unless otherwise specified.)
4
_______________________________________________________________________________________
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
Logic VL Level
EN/HSD LOGIC
EN/HSD Shutdown Current
Logic High
Logic Low
POWER-OK OUTPUT
FSEL = VL
VL - 0.4
Max I
EN/HSD
for V
EN/HSD
= 0.8V
VL = V+ = 4.5V to 5.5V, 100mV hysteresis
VL = V+ = 4.5V to 5.5V
0.5
1.45
3.0
μA
V
V
0.8
Upper VTT Threshold
110
112
114
%V
DDR
/
2
%V
DDR
/
2
%V
DDR
/
2
%V
DDR
/
2
V
μA
Lower VTT Threshold
86
88
90
Upper VTTR Threshold
110
112
114
Lower VTTR Threshold
86
88
90
POK Output Low Level
POK Output High Leakage
I
SINK
= 2mA
V
POK
= 5.5V
0.4
5
ELECTRICAL CHARACTERISTICS
(V+ = 12V, V
EN/HSD
= V
DDR
= 2.5V, C
VL
= 4.7μF, C
VTTR
= 1μF, C
REF
= 0.22μF, V
FSEL
= 0, ILIM = VL, PGND = LX = POK = GND,
BST = VL. Specifications are for
T
A
= -40
°
C to +85
°
C
, unless otherwise specified.) (Note 2)
PARAMETER
CONDITIONS
MIN
5.5
4.5
1.5
0
TYP
MAX
14.0
5.5
15.0
3.6
1.2
250
10
1.2
5
1
5
UNITS
V
V
V
V
mA
μA
μA
mA
μA
μA
μA
V+ Input Voltage Range
VL = V+
Enabled
EN/HSD Input Voltage Range
DDR Input Voltage Range
V+ Supply Current
DDR Supply Current
EN/HSD Supply Current
VL Supply Current
V+ Shutdown Supply Current
DDR Shutdown Supply Current
VL Shutdown Supply Current
VL Undervoltage Lockout
Threshold
VTT
VTT Input Bias Current
VTT Feedback Voltage Range
VTT = 2.0V
V
EN/HSD
= 2.5V
VL = V+ = 5.5V
EN/HSD = 0V
EN/HSD = 0V
VL = V+ = 5.5V
Rising edge, hysteresis = 40mV
4.05
4.40
V
V
VTT
= 2.5V
-0.15
0
49.5
49.5
0
μA
V
1.8
50.5
50.5
Overload range, V
DDR
= 1.8V
Overload range, V
DDR
= 3.6V
VTT Feedback Voltage
Accuracy
%V
DDR
REFERENCE
Reference Output Voltage
Reference Load Regulation
V+ = VL = 4.5V to 5.5V, I
REF
= 0
V+ = VL = 5V, I
REF
= 0 to 50μA
1.98
2.02
10
V
mV
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1917EEE | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1917EEE+ | 功能描述:直流/直流开关转换器 Track/Sink/Source Synchronous Buck RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1917EEE+T | 功能描述:直流/直流开关转换器 Track/Sink/Source Synchronous Buck RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1917EEE-T | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1917EEE-TG068 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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