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参数资料
| 型号： | MAX1917EEE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/18页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR SYNC BUCK 16-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 控制器，DDR |
| 输入电压： | 4.5 V ~ 22 V |
| 输出数： | 2 |
| 输出电压： | 0.4 V ~ 5 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 带卷 (TR) |
Tracking, Sinking and Sourcing, Synchronous Buck
Controller for DDR Memory and Termination Supplies
ABSOLUTE MAXIMUM RATINGS
V+ to GND ..............................................................-0.3V to +15V
EN/HSD to GND .....................................................-0.3V to +16V
VL to GND ................................................................-0.3V to +6V
PGND to GND .......................................................-0.3V to +0.3V
VTT, DDR, POK to GND ...........................................-0.3V to +6V
REF, VTTR, DL, ILIM, FSEL to GND ................-0.3V to VL + 0.3V
LX to PGND ............................................................-0.3V to +30V
BST to GND ............................................................-0.3V to +36V
DH to LX ......................................................-0.3V to V BST + 0.3V
REF Short Circuit to GND ...........................................Continuous
Continuous Power Dissipation (T A = +70 ° C)
16-Pin QSOP (derate up to +70 ° C)..............................667mW
16-Pin QSOP (derating above +70 ° C) .....................8.3mW/ ° C
Operating Temperature Range
Extended .........................................................-40 ° C to +85 ° C
Junction Temperature ......................................................+150 ° C
Storage Temperature Range .............................-65 ° C to +150 ° C
Lead Temperature (soldering 10s.) .................................+300 ° C
LX to BST..................................................................-6V to +0.3V
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
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 = 0°C to +85°C . Typical values are at T A = +25 ° C, unless otherwise specified.)
PARAMETER
V+ Input Voltage Range
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
CONDITIONS
VL = V+
Enabled
VTT = 2.0V
VL = V+ = 5.5V, VTT = 2.0V
EN/HSD = 0V
EN/HSD = 0V
VL = V+ = 5.5V
Rising edge, hysteresis = 40mV
MIN
5.5
4.5
1.5
0
4.05
TYP
0.8
115
5
0.8
3
3
4.25
MAX
14.0
5.5
15.0
3.6
1.2
250
10
1.2
5
1
5
4.40
UNITS
V
V
V
mA
μA
μA
mA
μA
μA
μA
V
VTT
VTT Input Bias Current
VTT Feedback Voltage Range
V VTT = 2.5V
-0.1
0
0
1.8
μA
V
VTT Feedback Voltage
Accuracy
Overload range, V DDR = 1.8V
Overload range, V DDR = 3.6V
49.5
49.5
50
50
50.5
50.5
%V DDR
REFERENCE
Reference Output Voltage
Reference Load Regulation
Reference UVLO
V+ = VL = 4.5V to 5.5V, I REF = 0
V+ = VL = 5V, I REF = 0 to 50μA
V+ = VL = 5V
1.98
1.5
2.00
1.6
2.02
10
1.7
V
mV
V
VTTR
VTTR Output Voltage Range
0
1.8
V
I VTTR = -5mA to +5mA
49.5
50
50.5
VTTR Output Accuracy
I VTTR = -25mA to +25mA, V DDR = 1.8V
I VTTR = -25mA to +25mA, V DDR = 3.6V
49
49.5
50
50
51
50.5
%V DDR
2
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