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| 型号： | MAX1672EEE |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/11页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BOOST FIX/ADJ 16QSOP |
| 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），升压（升压） |
| 输出类型： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 3.3V，5V，可调 |
| 输入电压： | 1.8 V ~ 11 V |
| 电流 - 输出： | 300mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 16-QSOP |
| 其它名称： | Q1162903B |
19-1307; Rev 2; 11/02
KIT MA
UATION ET
EVAL TA SHE
FOLLO
WS DA
NUAL
Step-Up/Down DC-DC Converter
in QSOP Package
________________General Description
The MAX1672 integrates a step-up DC-DC converter with a
linear regulator to provide step-up/down voltage conver-
sion. This device provides a constant output voltage for
inputs that vary above and below the output voltage. It has
a 1.8V to 11V input range and a preset 3.3V or 5V output.
The output can also be set from 1.25V to 5.5V using two
resistors. Typical efficiency is 85%.
The MAX1672’s step-up/linear-regulator configuration per-
mits the use of a single, physically smaller inductor than
can be used with competing SEPIC and flyback configura-
tions. Switch current is also selectable, permitting the use
of smaller inductors in low-current applications. The linear
regulator also acts as a filter to reduce output ripple voltage.
The MAX1672 has a low 85μA quiescent supply current, which
is further reduced to 0.1μA in logic-controlled shutdown. The
output voltage is disconnected from the input in shutdown.
The MAX1672 also has a PGI/ PGO low-battery detector.
The MAX1672 comes in a 16-pin QSOP package (same size
as a standard 8-pin SO). For a larger device that delivers more
output current, refer to the MAX710/MAX711. The preassem-
bled MAX1672 evaluation kit is available to speed designs.
________________________Applications
____________________________Features
o Step-Up/Down Voltage Conversion
o 1.8V to 11V Input Range
o 3.3V/5V or Adjustable Output Voltage Range
o Output Current:
300mA at 5V (V IN ≥ 2.5V)
150mA at 5V (V IN ≥ 1.8V)
o Smaller Inductor than SEPIC and Flybacks
o Load Disconnects from Input in Shutdown
o Supply Current from Battery:
85μA (No-Load)
0.1μA (Shutdown)
o PGI/ PGO Low-Battery Comparator
o 16-Pin QSOP Package
(Same Footprint as 8-pin SO)
o No External FETs Required
o Thermal and Short-Circuit Protection
Ordering Information
Single-Cell, Lithium-Powered
Portable Devices
3.3V and Other Low-Voltage
Systems
2-Cell to 4-Cell AA Alkaline
Hand-Held Equipment
Battery-Powered Devices
with AC Input Adapters
PART
MAX1672C/D
MAX1672EEE
TEMP RANGE
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
Dice*
16 QSOP
Digital Cameras
INPUT
Typical Operating Circuit
* Dice are tested at T A = +25°C.
Pin Configuration
1.8V TO 11V
IN
LX
TOP VIEW
PGI
MAX1672
PS
LX 1
PGND 2
ONB 3
16 LX
15 PGND
14 GND
ON
OFF
ONA
OUT
3.3V/5V
OUTPUT
ONA 4
MAX1672
13 REF
ON
3.3V
OFF
5V
ONB
3/5
3/5 5
12 IN
0.5A
0.8A
ILIM
REF
PGND
PG0
FB
GND
LOW-BATTERY
DETECTOR
OUTPUT
PGI 6
PGO 7
ILIM 8
11 PS
10 FB
9
OUT
QSOP
________________________________________________________________ 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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1672EEE+ | 功能描述:直流/直流开关转换器 Step-Up/Down 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 |
| MAX1672EEE+T | 功能描述:直流/直流开关转换器 Step-Up/Down 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 |
| MAX1672EEE-T | 功能描述:直流/直流开关转换器 Step-Up/Down 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 |
| MAX1672EVKIT | 功能描述:直流/直流开关转换器 Evaluation Kit for the MAX1672 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 |
| MAX1673ESA | 功能描述:电荷泵 Regulated 125mA Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
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