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参数资料
| 型号： | MAX1921EVKIT |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/11页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX1921 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 1.8V |
| 电流 - 输出： | 400mA |
| 输入电压： | 2 ~ 5.5 V |
| 稳压器拓扑结构： | 降压 |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX1921 |
Low-Voltage, 400mA Step-Down
DC-DC Converters in SOT23
ABSOLUTE MAXIMUM RATINGS
IN, FB, SHDN to AGND . . . . . . . . . . . . . . . . . . . . .-0.3V to +6V
OUT to AGND, LX to PGND . . . . . . . . . . . .-0.3V to (IN + 0.3V)
AGND to PGND . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to +0.3V
OUT Short Circuit to GND . . . . . . . . . . . . . . . . . . . . . . . . . . .10s
Operating Temperature Range . . . . . . . . . . . . . .-40°C to +85°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . .+150°C
Storage Temperature . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Lead Temperature (soldering 10s) . . . . . . . . . . . . . . . . .+300°C
Continuous Power Dissipation (TA = +70°C)
6-Pin SOT23-6 (derate 8.7mW/°C above +70°C) . . . .695mW
6-Pin TDFN (derate 18.2mW/°C above +70°C) . . .1454.5mW
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 IN = 3.6V, SHDN = IN, T A = 0°C to +85°C. Typical parameters are at T A = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
I(LX) < 400mA
2.5
5.5
Input Voltage Range
V IN
I(LX) < 200mA
(MAX1921EUT15, MAX1921EUT18)
2.0
2.5
V
Startup Voltage
2.0
V
UVLO Threshold
UVLO
V IN rising
V IN falling
1.50
1.85
1.65
1.95
V
UVLO Hysteresis
200
mV
Quiescent Supply Current
Quiescent Supply Current
Dropout
Shutdown Supply Current
I IN
I IN
I SHDN
No switching, no load
SHDN = IN, OUT/FB = 0
SHDN = GND
50
220
0.1
70
300
4.0
μA
μA
μA
I OUT = 0, T A = +25°C
-1.5
+1.5
Output Voltage Accuracy
(MAX1921)
I OUT = 0 to 400mA, T A = -40°C to +85°C
I OUT = 0 to 200mA, T A = -40°C to +85°C
-3
-3
+3
+3
%
OUT BIAS Current
Output Voltage Range (MAX1920)
I OUT
SHDN = 0
OUT at regulation voltage
Figure 4, IN = 4.5V
T A = 25°C
1.25
1.231
8
1.25
1
16
4.00
1.269
μA
V
FB Feedback Threshold
(MAX1920)
V FB
1.220
1.25
1.280
V
T A = -40°C to +85°C
1.210
1.280
FB Feedback Hysteresis
(MAX1920)
V HYS
5
mV
FB Bias Current (MAX1920)
I FB
FB = 1.5V
0.01
0.20
μA
Load Regulation
Line Regulation
SHDN Input Voltage High
SHDN Input Voltage Low
V IH
V IL
I OUT = 0 to 400mA
V IN = 2.5V to 5.5V
1.6
0.005
0.2
0.4
%/mA
%/V
V
V
SHDN Leakage Current
High-Side Current Limit
I SHDN
I LIMP
SHDN = GND or IN
525
0.001
730
1.000
950
μA
mA
2
_______________________________________________________________________________________
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