参数资料
型号: MAX750ACSA+
厂商: Maxim Integrated Products
文件页数: 10/16页
文件大小: 0K
描述: IC REG BUCK ADJ 0.45A 8SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 100
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 1.25 V ~ 11 V
输入电压: 4 V ~ 11 V
PWM 型: 电流模式
频率 - 开关: 170kHz
电流 - 输出: 450mA
同步整流器:
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 管件
供应商设备封装: 8-SOIC
产品目录页面: 1409 (CN2011-ZH PDF)
Adjustable, Step-Down,
Current-Mode PWM Regulators
Table 1. Typical Soft-Start Times
MAX750A CIRCUIT CONDITIONS
SOFT-START TIME (ms) vs. C1 (μF)
R1 (k ? )
510
510
510
510
510
510
510
None
None
None
None
None
None
V+ (V)
6
9
11
9
9
9
9
6
9
11
9
9
9
I OUT (mA)
0
0
0
150
300
150
150
0
0
0
150
150
150
C4 (μF)
100
100
100
100
100
390
680
100
100
100
100
390
680
C1 = 0.01
2
1
1
1
1
3
4
16
10
8
34
39
40
C1 = 0.047
6
4
2
4
5
6
6
34
22
18
134
147
152
C1 = 0.1
11
6
4
8
9
9
9
51
34
28
270
280
285
C1 = 0.47
28
15
11
21
27
23
24
125
82
66
1263
1275
1280
MAX750A CIRCUIT CONDITIONS
SOFT-START TIME (ms) vs. C1 (μF)
R1 (k ? )
510
510
510
510
510
None
None
None
None
V+ (V)
7
12
16
12
12
7
12
16
12
I OUT (mA)
0
0
0
300
750
0
0
0
300
C4 (μF)
100
100
100
100
100
100
100
100
100
C1 = 0.01
1
1
1
1
1
12
7
6
27
C1 = 0.047
4
2
1
3
5
27
16
13
112
C1 = 0.1
6
3
2
5
8
40
25
20
215
C1 = 0.47
18
8
6
3
21
100
54
68
1114
as the temperature falls, and excessive ESR is the most
likely cause of trouble at temperatures below 0°C.
Sanyo OS-CON series through-hole and surface-mount
tantalum capacitors exhibit low ESR at temperatures
below 0°C. Refer to Table 2 for recommended capaci-
tor values and suggested capacitor suppliers.
Other Components
The catch diode should be a Schottky or high-speed
silicon rectifier with a peak current rating of about 1A
for full-load (750mA) operation. The 1N5817 is a good
choice. The 330pF outer-loop compensation capacitor
provides the widest input voltage range and best tran-
sient characteristics. For low-current applications, the
510k ? resistor may be omitted (see the Maximum
Output Current vs. Supply Voltage, R1 Removed graph
in the Typical Operating Characteristics).
Printed Circuit Layouts
A good layout is essential for clean, stable operation.
The layouts and component placement diagrams given
in Figures 4-7 have been successfully tested over a
wide range of operating conditions. The 1μF bypass
capacitor (C2) must be positioned as close to the V+
10
______________________________________________________________________________________
相关PDF资料
PDF描述
ECA49DTKS CONN EDGECARD 98POS DIP .125 SLD
IHSM7832PJ123L INDUCTOR POWER 12MH 0.14A SMD
ECA43DTBN CONN EDGECARD 86POS R/A .125 SLD
VE-B13-EX-F1 CONVERTER MOD DC/DC 24V 75W
LPX102M250H7P3 CAP ALUM 1000UF 250V 20% SNAP
相关代理商/技术参数
参数描述
MAX750ACSA+ 功能描述:直流/直流开关调节器 Adjustable PWM Step-Down Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
MAX750ACSA+T 功能描述:直流/直流开关调节器 Adjustable PWM Step-Down Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
MAX750ACSA-T 功能描述:直流/直流开关调节器 Adjustable PWM Step-Down Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
MAX750AEPA 功能描述:直流/直流开关调节器 Adjustable PWM Step-Down Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
MAX750AESA 功能描述:直流/直流开关调节器 Adjustable PWM Step-Down Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5