- 您现在的位置：买卖IC网 > PDF目录383343 > MAX1974EUB (MAXIM INTEGRATED PRODUCTS INC) Smallest 1A, 1.4MHz Step-Down Regulators PDF资料下载
参数资料
| 型号： | MAX1974EUB |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | Smallest 1A, 1.4MHz Step-Down Regulators |
| 中文描述： | 2.4 A SWITCHING REGULATOR, 1600 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | MICRO, SOP-10 |
| 文件页数： | 14/15页 |
| 文件大小： | 331K |
| 代理商： | MAX1974EUB |
M
V
OUT
= 2.5V
I
OUT(MAX)
= 1A
C
OUT
= 4.7μF
V
FB
= 1.25V
R
CS
= 0.26
g
m
= 50μS
f
C
= 140kHz
Select the nearest standard value: C
C
= 560pF
Select the nearest standard value: R
C
= 43k
PC Board Layout
A properly designed PC board layout is important in
any switching regulator. The switching power stage
requires particular attention. Follow these guidelines for
good PC board layout:
1) Place decoupling capacitors as close to IC pins as
possible. Keep the power ground plane (connected
to PGND) and signal ground plane (connected to
GND) separate. Connect the two ground planes with
a single connection from PGND to GND.
2) Input and output capacitors are connected to the
power ground plane; all other capacitors are con-
nected to the signal ground plane.
3) Keep the high-current paths as short and wide as
possible.
4) If possible, connect IN, LX, and PGND separately to
a large land area to help cool the IC to further
improve efficiency and long-term reliability.
5) Ensure all feedback connections are short and
direct. Place feedback resistors (if used) as close to
the IC as possible.
6) Route high-speed switching nodes (LX) away from
sensitive analog areas (FB, COMP, SS).
R
C
C
V
I
OUT MAX
(
k
C
OUT
C
OUT
=
×
×
=
×
=
0 5
.
4 7 10
.
560 10
2 5
0 5 1
.
41 9
6
12
.
.
)
C
V
I
R
g
f
pF
C
FB
OUT MAX
1
0 26
.
CS
m
C
=
×
×
×
×
×
=
×
×
×
×
=
0 5
.
1
1
2
1 25
0 5 1
.
50 10
1
2
140000
547
6
.
(
)
π
π
Smallest 1A, 1.4MHz Step-Down Regulators
14
______________________________________________________________________________________
Chip Information
TRANSISTOR COUNT: 1998
PROCESS: BiCMOS
V
OUT
(V)
2.5
1.8
C
IN
(μF)
4.7
4.7
C
OUT
(μF)
4.7
4.7
C
C
(pF)
560
560
R
C
(k
)
43
30
Table 4. Recommended Components for the MAX1973
V
OUT
(V)
1.5
1.0
C
IN
(μF)
4.7
4.7
C
OUT
(μF)
4.7
4.7
C
C
(pF)
330
330
R
C
(k
)
43
27
Table 5. Recommended Components for the MAX1974
Selector Guide
PART
FEATURES
Voltage Margining
Power-OK Output
OUTPUT PRESET
1.8V or 2.5V
1V or 1.5V
MAX1973EUB
MAX1974EUB
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1976ETT-T | Low-Input-Voltage, 300mA LDO Regulators with RESET in SOT and TDFN |
| MAX1976EZT-T | Low-Input-Voltage, 300mA LDO Regulators with RESET in SOT and TDFN |
| MAX1978 | Integrated Temperature Controllers for Peltier Modules |
| MAX1978-MAX1979 | Integrated Temperature Controllers for Peltier Modules |
| MAX1978ETM | Integrated Temperature Controllers for Peltier Modules |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1974EUB+ | 功能描述:直流/直流开关调节器 1A 1.4MHz 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 |
| MAX1974EUB+T | 功能描述:直流/直流开关调节器 1A 1.4MHz 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 |
| MAX1974EUB-G05 | 功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX1974EUB-T | 功能描述:直流/直流开关调节器 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 |
| MAX1974EUB-TG05 | 功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
发布紧急采购，3分钟左右您将得到回复。