参数资料
型号: MAX1951ESA+TW
厂商: Maxim Integrated Products
文件页数: 5/15页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 2A 8SOIC
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 ~ 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: 2A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
供应商设备封装: 8-SOIC
1MHz, All-Ceramic, 2.6V to 5.5V Input,
2A PWM Step-Down DC-to-DC Regulators
Typical Operating Characteristics
(Typical values are at V IN = V CC = 5V, V OUT = 1.5V, I OUT = 1.5A, and T A = +25°C, unless otherwise noted. See Figure 2.)
EFFICIENCY vs. LOAD CURRENT
(V CC = V IN = 5V)
EFFICIENCY vs. LOAD CURRENT
(V CC = V IN = 3.3V)
REF VOLTAGE
vs. REF OUTPUT CURRENT
100
90
80
V OUT = 3.3V
100
90
80
V OUT = 2.5V
1.995
1.994
70
60
V OUT = 2.5V
70
60
V OUT = 1.8V
V OUT = 1.5V
1.993
T A = +85 ° C
T A = +25 ° C
50
40
V OUT = 1.5V
50
40
1.992
30
20
V OUT = 0.8V
30
20
V OUT = 0.8V
1.991
1.990
T A = -40 ° C
10
10
0
0
1.989
10
100
1000
10,000
10
100
1000
10,000
0
5
10
15
20
25
30
35
40
LOAD CURRENT (mA)
SWITCHING FREQUENCY
vs. INPUT VOLTAGE
1.20
LOAD CURRENT (mA)
6
REF OUTPUT CURRENT ( μ A)
OUTPUT VOLTAGE DEVIATION
vs. LOAD CURRENT
1.15
1.10
T A = +85 ° C
5
4
3
1.05
1.00
2
1
0
V OUT = 2.5V
V OUT = 3.3V
0.95
0.90
T A = -40 ° C
T A = +25 ° C
-1
-2
-3
V OUT = 0.8V
V OUT = 1.8V
0.85
0.80
-4
-5
-6
2.6
3.1
3.6
4.1
4.6
5.1
5.6
0
0.4
0.8
1.2
1.6
INPUT VOLTAGE (V)
LOAD-TRANSIENT RESPONSE
MAX1951 toc06
OUTPUT VOLTAGE:
100mV/div,
AC-COUPLED
OUTPUT CURRENT:
0.5A/div
LOAD CURRENT (A)
LOAD-TRANSIENT RESPONSE
MAX1951 toc07
OUTPUT VOLTAGE:
100mV/div,
AC-COUPLED
OUTPUT CURRENT:
0.5A/div
0A
40 μ s/div
V IN = 5V
V OUT = 2.5V
I OUT = 0.5 TO 1A
0A
40 μ s/div
V IN = 3.3V
V OUT = 1.5V
I OUT = 0.5 TO 1A
_______________________________________________________________________________________
5
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