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参数资料
| 型号： | MAX1921EUT33+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/11页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 3.3V SOT23-6 |
| 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： | 固定 |
| 输出数： | 1 |
| 输出电压： | 3.3V |
| 输入电压： | 2 V ~ 5.5 V |
| 频率 - 开关： | 1.2MHz |
| 电流 - 输出： | 400mA |
| 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： | SOT-23-6 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | SOT-6 |
Low-Voltage, 400mA Step-Down
DC-DC Converters in SOT23
ELECTRICAL CHARACTERISTICS (continued)
(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
Low-Side Current Limit
High-Side On-Resistance
Rectifier On-Resistance
Rectifier Off-Current Threshold
LX Leakage Current
LX Reverse Leakage Current
Minimum On-Time
Minimum Off-Time
I LIMN
R ONHS
R ONSR
I LXOFF
I LXLEAK
I LXLKR
t ON(MIN)
t OFF(MIN)
I LX = -40mA, V IN = 3V
I LX = 40mA, V IN = 3V
IN = SHDN = 5.5V, LX = 0 to IN
IN unconnected, V LX = 5.5V, SHDN = GND
350
0.28
0.28
550
0.6
0.5
60
0.1
0.1
0.4
0.4
800
1.1
0.9
5.0
5.0
0.5
0.5
mA
?
?
mA
μA
μA
μs
μs
Note 1: All devices are 100% production tested at T A = +25°C. Limits over the operating temperature range are guaranteed
by design.
Typical Operating Characteristics
(C IN = 2.2μF ceramic, Circuit of Figure 1, components of Table 1, unless otherwise noted.)
EFFICIENCY vs. LOAD CURRENT
(V OUT = 3.3V)
EFFICIENCY vs. LOAD CURRENT
(V OUT = 2.5V)
EFFICIENCY vs. LOAD CURRENT
(V OUT = 1.5V)
100
90
V IN = 3.6V
100
90
V IN = 2.7V
100
90
V IN = 2.5V
80
70
V IN = 4.2V
V IN = 5V
80
70
V IN = 3.3V
V IN = 5V
80
70
V IN = 3.3V
60
60
60
50
40
30
20
10
0
50
40
30
20
10
0
50
40
30
20
10
0
V IN = 5V
0.1
1
10
100
1000
0.1
1
10
100
1000
0.1
1
10
100
1000
3.399
LOAD CURRENT ( mA)
OUTPUT VOLTAGE ACCURACY vs. LOAD
(V OUT = 3.3V)
2.575
LOAD CURRENT ( mA)
OUTPUT VOLTAGE ACCURACY vs. LOAD
(V OUT = 2.5V)
1.545
LOAD CURRENT ( mA)
OUTPUT VOLTAGE ACCURACY vs. LOAD
(V OUT = 1.5V)
3.366
3.333
V IN = 5V
2.550
2.525
V IN = 5V
1.530
1.515
V IN = 5V
3.300
3.267
V IN = 4.2V
V IN = 3.6V
2.500
2.475
V IN = 3V
1.500
1.485
V IN = 3.3V
V IN = 2.5V
3.234
3.201
2.450
2.425
1.470
1.455
0
50
100 150 200 250 300 350 400
0
50
100 150 200 250 300 350 400
0
50
100 150 200 250 300 350 400
LOAD (mA)
LOAD (mA)
LOAD (mA)
_______________________________________________________________________________________
3
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