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参数资料
| 型号： | MAX8554EEE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/24页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR BUCK PWM 16-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | Quick-PWM™ |
| 应用： | 控制器，DDR，DDR2 |
| 输入电压： | 4.5 V ~ 28 V |
| 输出数： | 1 |
| 输出电压： | 0.6 V ~ 3.5 V |
| 工作温度： | -40°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) |
4.5V to 28V Input, Synchronous PWM Buck Controllers
for DDR Termination and Point-of-Load Applications
ABSOLUTE MAXIMUM RATINGS
V+, EN/HSD, EN, HSD to GND...............................-0.3V to +30V
PGND to GND .......................................................-0.3V to +0.3V
VTT, REFIN, POK, OUT, FB, VL to GND...................-0.3V to +6V
REF, VTTR, DL, ILIM, FSEL to GND ............-0.3V to (V VL + 0.3V)
LX to PGND ...............................................................-2V to +30V
BST to GND ............................................................-0.3V to +36V
DH to LX ...................................................................-0.3V to +6V
REF Short Circuit to GND ...........................................Continuous
Continuous Power Dissipation (T A = +70 ° C)
16-Pin QSOP (derated 8.3mW/°C above +70 ° C) ........667mW
Operating Temperature Range ...........................-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 V+ = V HSD = +12V, V EN/HSD = V REFIN = +2.5V, V EN = +5V, C VL = 4.7μF, C VTTR = 1μF, C REF = 0.22μF, V FSEL = 0V, ILIM = VL,
PGND = LX = GND, BST = VL, T A = 0°C to +85°C. Typical values are at T A = +25 ° C, unless otherwise specified.)
PARAMETER
V+ Input Voltage Range
V+ Input Voltage Range
EN/HSD Input Voltage Range
EN Input Voltage Range
EN Input Current
HSD Input Voltage Range
CONDITIONS
VL not connected to V+
VL connected to V+
MAX8553 enabled
MAX8554 enabled
MAX8554 enabled
MIN
6
4.5
1.5
1.5
1.5
TYP
2
MAX
28
5.5
28.0
28.0
3
28.0
UNITS
V
V
V
V
μA
V
HSD Input Current
REFIN Input Voltage Range
0
20
40
3.6
μA
V
V+ Supply Current (MAX8553)
V+ Supply Current (MAX8554)
REFIN Supply Current
EN/HSD Supply Current
VL Supply Current
V+ Shutdown Supply Current
REFIN Shutdown Supply Current
VL Shutdown Supply Current
V VTT = +1.35V
V FB = 630mV
V VL = V V+ = 5.5V, V VTT = +1.35V
EN/HSD = GND
EN/HSD = GND
V VL = V V+ = +5.5V, V EN/HSD = 0V
0.8
0.62
125
5
0.8
3
5
1.2
0.90
250
10
1.2
5
1
12
mA
mA
μA
μA
mA
μA
μA
μA
VL Undervoltage-Lockout Threshold
Rising edge, typical hysteresis = 40mV
4.05
4.25
4.40
V
VTT
VTT Input Bias Current
VTT Feedback Voltage Range
V VTT = +1.25V
-0.15
0
0
1.8
μA
V
VTT Feedback Voltage Accuracy
FB Input Bias Current
V REFIN = V EN/HSD = +1.8V
V REFIN = V EN/HSD = +3.6V
MAX8554, V FB = +600mV
49.5
49.5
-0.15
50
50
50.5
50.5
0
% V REFIN
μA
2
_______________________________________________________________________________________
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