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参数资料
| 型号： | MAX1572ETC150 |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 800mA, 2MHz, PWM DC-to-DC Step-Down Converter with RESET |
| 中文描述： | 2.1 A SWITCHING REGULATOR, 2200 kHz SWITCHING FREQ-MAX, QCC12 |
| 封装： | 4 X 4 MM, 0.80 MM HEIGHT, MO-220WGGB, TQFN-12 |
| 文件页数： | 1/11页 |
| 文件大小： | 340K |
| 代理商： | MAX1572ETC150 |
General Description
The MAX1572 is a fixed-frequency, synchronous step-
down DC-to-DC converter to power low-voltage micro-
processor/DSP cores in portable equipment requiring
high efficiency in a limited PC board area. The features
are optimized for high efficiency over a wide load range,
small external component size, low output ripple, and
excellent transient response. The input supply voltage
range is from 2.6V to 5.5V, while the output is internally
fixed from 0.75V to 2.5V in 50mV increments with a
guaranteed output current of 800mA. The high 2MHz
switching allows tiny low-cost capacitors and a low-pro-
file inductor, while the power-saving pulse-group mode
reduces quiescent current to 48μA (typ) with light loads.
To reduce noise and RF interference, the converter can
be configured to provide forced-PWM operation.
The MAX1572 includes a low on-resistance internal
MOSFET switch and synchronous rectifier to maximize
efficiency and minimize external component count. No
external diode is needed. Other features include soft-
start to eliminate inrush current at startup and a 170ms
(min)
RESET
output to provide power-on/undervoltage
reset. The MAX1572 is available in a 12-pin, 4mm x
4mm thin QFN package with exposed paddle.
Applications
Cell Phones and Smart Phones
PDAs, Palmtops, and Notebook Computers
MP3 and DVD Players
Digital Cameras and Camcorders
PCMCIA Cards
Hand-Held Instruments
Selector Guide appears at end of data sheet.
Features
o
Up to 97% Efficiency
o
2MHz PWM Switching
o
800mA Guaranteed Output Current
o
Low 48μA Quiescent Current
o
Power-Saving Modes: Pulse-Group, Pulse-Skip,
Forced-PWM Mode
o
0.75V to 2.5V Preset Output Range
(in 50mV Increments)
o
Voltage-Positioning Load Transients
o
5mV
P-P
Output Ripple
o
Tiny 2.2μH Inductor
o
10μF Ceramic Output Capacitor
o
Low 0.1μA Shutdown Current
o
No External Schottky Diode Required
o
Soft-Start with Zero Inrush Current
o
170ms (min)
RESET
Output
o
Small 12-Pin, 4mm x 4mm Thin QFN Package
Ordering Information
M
800mA, 2MHz, PWM DC-to-DC
Step-Down Converter with
RESET
________________________________________________________________
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
MAX1572
12
11
10
7
8
9
P
L
B
3
2
1
G
S
R
4mm x 4mm
THIN QFN
4
5
6
EN1
GND
ABATT
EN2
GND
OUT
TOP VIEW
Pin Configuration
LX
2.2
μ
H
PGND
OUT
RESET
GND
ABATT
EN1
EN2
SS
BATT
MODE
SELECT
INPUT
2.6V TO 5.5V
OUTPUT
0.75V TO 2.5V
800mA
MAX1572
Typical Operating Circuit
19-2837; Rev 0; 4/03
*
xyz is for the output voltage (e.g., MAX1572ETC165 has a
1.65V output). Minimum order quantity is 2500.
**
EP = Exposed paddle.
EVALUATION KIT
AVAILABLE
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
12 Thin QFN-EP**
12 Thin QFN-EP**
12 Thin QFN-EP**
12 Thin QFN-EP**
12 Thin QFN-EP**
12 Thin QFN-EP**
MAX1572ETC075
MAX1572ETC130
MAX1572ETC150
MAX1572ETC180
MAX1572ETC250
MAX1572ETCxyz*
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1572ETC150+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1572ETC150-T | 功能描述:直流/直流开关转换器 800mA 2MHz PWM Step-Down w/Reset RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1572ETC180 | 功能描述:直流/直流开关转换器 800mA 2MHz PWM Step-Down w/Reset RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1572ETC180+ | 功能描述:直流/直流开关转换器 800mA 2MHz PWM Step-Down w/Reset RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1572ETC180+T | 功能描述:直流/直流开关转换器 800mA 2MHz PWM Step-Down w/Reset RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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