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参数资料
| 型号： | MAX1557ETB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.6A 10TDFN |
| 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： | 0.75 V ~ 5.5 V |
| 输入电压： | 2.6 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 600mA |
| 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： | 10-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-TDFN-EP（3x3） |
16μA I Q , 1.2A PWM DC-DC
Step-Down Converters
Typical Operating Characteristics
(V IN = V INP = 3.6V, D1 = D2 = SHDN = IN, Circuits of Figures 2 and 3, T A = +25°C, unless otherwise noted.)
100
90
EFFICIENCY vs. LOAD CURRENT
WITH 3.3V OUTPUT
100
90
EFFICIENCY vs. LOAD CURRENT
WITH 2.5V OUTPUT
100
90
EFFICIENCY vs. LOAD CURRENT
WITH 1.8V OUTPUT
V IN = 4.2V
V IN = 5V
V IN = 5V
80
70
V IN = 3.6V
80
70
V IN = 3.6V
V IN = 3V
V IN = 2.6V
80
70
V IN = 2.6V
V IN = 5V
V IN = 3.6V
V IN = 3V
60
50
40
60
50
40
60
50
40
0.1
1
10
100
1000
10,000
0.1
1
10
100
1000
10,000
0.1
1
10
100
1000
10,000
100
LOAD CURRENT (mA)
EFFICIENCY vs. LOAD CURRENT
WITH 1.0V OUTPUT (MAX1557)
1.84
LOAD CURRENT (mA)
OUTPUT VOLTAGE
vs. LOAD CURRENT
1.789
LOAD CURRENT (mA)
OUTPUT VOLTAGE vs. INPUT VOLTAGE
WITH 600mA LOAD
90
80
1.83
1.82
1.81
T A = -45 ° C
1.788
1.787
1.786
70
60
50
V IN = 3V
V IN = 2.6V
V IN = 3.6V
V IN = 5V
1.80
1.79
1.78
1.77
1.76
T A = +25 ° C
T A = +85 ° C
1.785
1.784
1.783
1.782
1.781
T A = +25 ° C
T A = -40 ° C
T A = +85 ° C
1.75
1.780
40
1.74
1.779
0.1
1
10
100
1000
0
200
400
600
800
1000
1200
2.5
3.0
3.5
4.0
4.5
5.0
5.5
LOAD CURRENT (mA)
OUTPUT VOLTAGE vs. INPUT VOLTAGE
WITH NO LOAD
LOAD CURRENT (mA)
SUPPLY CURRENT vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
HEAVY-LOAD SWITCHING WAVEFORMS
1.812
1.811
20
18
MAX1556/7 toc09
I LOAD = 750mA
V OUT
1.810
1.809
1.808
1.807
1.806
1.805
1.804
1.803
T A = -40 ° C
T A = +25 ° C
T A = +85 ° C
16
14
12
10
8
6
4
2
0
AC-COUPLED
10mV/div
V LX
2V/div
0
I LX
500mA/div
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
1
2
3
4
5
6
400ns
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
4
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