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参数资料
| 型号： | MAX8554EEE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/24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
ELECTRICAL CHARACTERISTICS (continued)
(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
CONDITIONS
MIN
TYP
MAX
UNITS
POWER-OK OUTPUT
Upper VTT and VTTR Threshold
Lower VTT and VTTR Threshold
Upper Threshold
Lower Threshold
POK Output Low Level
POK Output High Leakage
MAX8553
MAX8553
MAX8554
MAX8554
I SINK = 2mA
V POK = +5V
55
43
0.646
0.504
56
44
0.672
0.528
57
45
0.698
0.552
0.4
5
% V REFIN
% V REFIN
V
V
V
μA
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 = 0, ILIM = VL, PGND
= LX = POK = GND, BST = VL, T A = -40°C to +85°C , unless otherwise specified.) (Note 3)
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
HSD Input Current
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
MAX
28
5.5
28.0
28.0
3
28.0
40
UNITS
V
V
V
V
μA
V
μA
REFIN Input Voltage Range
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
3.6
1.2
0.90
250
10
1.2
5
1
12
V
mA
mA
μA
μA
mA
μA
μA
μA
VL Undervoltage-Lockout Threshold
Rising edge, typical hysteresis = 40mV
4.05
4.40
V
VTT
VTT Input Bias Current
VTT Feedback Voltage Range
VTT Feedback Voltage Accuracy
FB Input Bias Current
FB Regulation Voltage
Output Adjust Range
V VTT = +1.25V
V REFIN = V EN/HSD = +1.8V
V REFIN = V EN/HSD = +3.6V
MAX8554, V FB = +600mV
MAX8554, V OUT = +2.5V, FSEL unconnected
MAX8554 (Note 1)
-0.2
0
49.5
49.5
-0.2
0.598
0.6
0
1.8
50.5
50.5
0
0.616
3.5
μA
V
% V REFIN
μA
V
V
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