- 您现在的位置：买卖IC网 > PDF目录383343 > MAX1973EUB (MAXIM INTEGRATED PRODUCTS INC) Smallest 1A, 1.4MHz Step-Down Regulators PDF资料下载
参数资料
| 型号： | MAX1973EUB |
| 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： | 1/15页 |
| 文件大小： | 331K |
| 代理商： | MAX1973EUB |
General Description
The MAX1973/MAX1974 are constant-frequency
1.4MHz pulse-width-modulated (PWM) current-mode
step-down regulators. The output voltage can be set as
low as 0.75V using an external voltage-divider, or it can
be set to preset outputs of 1V, 1.5V (MAX1974), 1.8V,
or 2.5V (MAX1973) without requiring external resistors.
The MAX1973 also includes a voltage-margining fea-
ture that offsets the output voltage up or down 4% to
facilitate board-level production testing.
A fixed 1.4MHz operating frequency ensures operation
outside the DSL frequency band, provides fast transient
response, and allows the use of small external compo-
nents. Only 4.7μF input and output ceramic capacitors
are needed for 1A applications. Forced PWM operation
ensures a constant switching frequency over all load
conditions.
Output voltage accuracy is ±1% over load, line, and
temperature operating ranges. The MAX1973 features
voltage margining; the MAX1974 provides a POK out-
put to indicate when the output has reached 90% of its
nominal regulation voltage. Both devices are available
in small 10-pin μMAX packages.
Applications
Network Equipment
Cellular Base Stations
DSL and Wireless Modems/Routers
Optical Modules
Central-Office DSL and Telecom
DSP/ASIC Core and IO supplies
Features
o
Tiny Circuit Footprint of 0.19in
2
o
Ultra-Low Circuit Height of 1.8mm
o
4.7μF Ceramic Input and Output Capacitors
o
2.6V to 5.5V Input Voltage
o
1A Output Current
o
1% Accurate
o
Built-In ±4% Logic-Controlled Voltage Margining
(MAX1973)
o
Preset 1V, 1.5V, 1.8V, 2.5V, or 0.75V to V
IN
Adjustable Output
o
Fixed-Frequency PWM Current-Mode Operation
o
1.4MHz Switching Frequency, Operate Outside
DSL Band
o
100% Duty-Cycle Dropout Capability
o
Small External Components
M
Smallest 1A, 1.4MHz Step-Down Regulators
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
1
2
3
4
5
10
9
8
7
6
CTL1
IN
LX
PGND
SS
FB
COMP
FBSEL
MAX1973
μ
MAX
TOP VIEW
CTL2
GND
1
2
3
4
5
10
9
8
7
6
ON
IN
LX
PGND
SS
FB
COMP
FBSEL
MAX1974
μ
MAX
POK
GND
Pin Configurations
Ordering Information
MAX1973
IN
COMP
FBSEL
SS
GND
LX
FB
CTL1
CTL2
PGND
INPUT
2.6V TO 5.5V
MAX1974 OUTPUT DOWN TO 0.75V
VOLTAGE
MARGINING
ON/OFF
OUTPUT
1.25V TO V
IN
1A
Typical Operating Circuit
19-2547; Rev 0; 7/02
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
10 μMAX
10 μMAX
MAX1973
EUB
MAX1974
EUB
Selector Guide appears at end of data sheet.
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1974EUB | Smallest 1A, 1.4MHz Step-Down Regulators |
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1973EUB+ | 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 |
| MAX1973EUB+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 |
| MAX1973EUB-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 |
| MAX1973EVKIT | 功能描述:直流/直流开关调节器 Evaluation Kit for the MAX1973 MAX1974 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 | 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 |
发布紧急采购，3分钟左右您将得到回复。