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参数资料
| 型号： | MAX8505EEE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/15页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 3A 16QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 4.68 V |
| 输入电压： | 2.6 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 500kHz，1MHz |
| 电流 - 输出： | 3A |
| 同步整流器： | 是 |
| 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） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 16-QSOP |
3A, 1MHz, 1% Accurate, Internal Switch
Step-Down Regulator with Power-OK
ELECTRICAL CHARACTERISTICS (continued)
(V IN = V CC = V CTL = +3.3V, V FB = 0.8V, V COMP = 1.25V, C REF = 0.01μF, T A = 0°C to +85°C , unless otherwise noted.)
PARAMETER
COMP Clamp Voltage, Low
COMP Clamp Voltage, High
COMP Shutdown Resistance
SYMBOL
CONDITIONS
V IN = V CC = 2.6V, 3.3V, 5.5V, V FB = 0.9V
V IN = V CC = 2.6V, 3.3V, 5.5V, V FB = 0.7V
From COMP to GND, V CTL = 0V
MIN
0.45
1.7
TYP
0.75
1.9
13
MAX
1.00
2.1
100
UNITS
V
V
?
LX (All LX Outputs Connected Together)
LX On-Resistance, High
LX On-Resistance, Low
V IN = V BST - V LX = 3.3V
V IN = V BST - V LX = 2.6V
V IN = V BST - V LX = 3.3V
V IN = V BST - V LX = 2.6V
38
42
38
42
74
74
m ?
m ?
LX Current-Sense Transresistance
LX Current-Limit Threshold
LX Leakage Current
R T
From LX to COMP
Sourcing, Typical Application Circuit
Sinking, V IN = V CC = 2.6V to 5.5V
V LX = 5.5V
V IN = V CC = 5.5V,
V CTL = 0V
V LX = 0V
0.068
4.6
-4.3
-100
0.086
5.6
-2.6
0.104
6.6
-1.0
100
?
A
μA
LX Switching Frequency
V IN = V CC = 2.6V, 3.3V,
5.5V
V CTL = V CC
V CTL = 2/3V CC
0.85
0.44
1
0.5
1.15
0.56
MHz
LX Minimum Off-Time
V IN = V CC = 2.6V, 3.3V, 5.5V
95
110
135
ns
LX Maximum Duty Cycle
V IN = V CC = 2.6V, 3.3V,
5.5V
500kHz
1MHz
90
84
94
89
%
LX Minimum Duty Cycle
V IN = V CC = 2.6V, 3.3V,
5.5V
500kHz
1MHz
5
10
8
15
%
SLOPE COMPENSATION
Slope Compensation
Extrapolated to 100% duty cycle
245
300
400
mV
BST
BST Shutdown Supply Current
(V BST - V LX ) = V IN =
V CC = 5.5V, V CTL = 0V
V LX = 5.5V
V LX = 0V
LX open
10
10
10
μA
CTL
For 1MHz
80
CTL Input Threshold
V IN = V CC = 2.6V,
3.3V, 5.5V
For 500kHz
For shutdown
55
70
45
% of
V CC
CTL Input Current
V CTL = 0V or 5.5V, V IN = V CC = 5.5V
-1
+1
μA
POK (Power-OK)
POK Output Voltage, Low
POK Leakage Current
V FB = 0.6V or 1.0V, I POK = 2mA
V POK = 5.5V
25
0.001
100
1
mV
μA
POK Fault Delay Time
From FB to POK, any threshold
25
50
100
μs
THERMAL SHUTDOWN
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
When LX stops switching T J rising
+170
20
° C
° C
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