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| 型号： | MAX685EEE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/11页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST INV ADJ 10MA 16QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 升压（升压），反相 |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | -9 V ~ 24 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 220kHz，400kHz |
| 电流 - 输出： | 10mA |
| 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： | 带卷 (TR) |
| 供应商设备封装： | 16-QSOP |
19-1353; Rev 1; 6/03
N KIT M
TA SHE
LUATIO ET
WS DA
EVA
FOLLO
ANUAL
Dual-Output (Positive and Negative),
DC-DC Converter for CCD and LCD
General Description
The MAX685 DC-DC converter provides low-noise dual
outputs for powering CCD imaging devices and LCDs.
This device uses a single inductor to provide indepen-
dently regulated positive and negative outputs.
Integrated power switches are included in a small 24-
Pin 4mm x 4mm Thin QFN package to save space and
reduce cost. A 16-pin QSOP package is also available.
Each output delivers up to 10mA from a +2.7V to +5.5V
input voltage range. Output voltages are set indepen-
dently up to 24V and down to -9V. With a few additional
low-cost components, the output voltages can be set at
up to 45V and down to -16V. Output ripple magnitude is
30mVp-p. The MAX685 uses a fixed-frequency, pulse-
width-modulated (PWM) control scheme at 220kHz or
400kHz to permit output noise filtering and to reduce
the size of external components. The frequency can
also be synchronized to an external clock signal
between 200kHz and 480kHz.
The MAX685 has a power-OK indicator output (POK)
that signals when both outputs are within regulation. A
Features
o Dual Output Using a Single Inductor
o Low-Noise Output, 30mVp-p Ripple
o Output Voltages up to 24V and down to -9V
(up to 45V and down to -16V with added
components)
o Internal Switches in a Small 24-Pin 4mm x 4mm
Thin QFN Package
o 220kHz/400kHz Fixed-Frequency PWM Operation
o Frequency Can Be Synchronized to External
Clock
o Power-OK Indicator
o Selectable Power-On Sequencing
o 0.1μA Logic-Controlled Shutdown
Ordering Information
logic-controlled shutdown completely turns off both out-
puts and reduces supply current to 0.1μA. The user
can also set which output turns on first.
The preassembled MAX685 evaluation kit is available to
PART
MAX685EEE
MAX685ETG
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
16 QSOP
24 TQFN
reduce design time.
Applications
Typical Operating Circuit
Camcorders
LCDs
Digital Cameras
Notebooks
CCD Imaging Devices
INPUT
2.7V TO 5.5V
POSITIVE
Pin Configuration
VP
V DD
LXN
OUTPUT
UP TO 24V,
10mA
TOP VIEW
ON
OFF
SHDN
FBP
N.C.
1
18
N.C.
MAX685
NEGATIVE
VP
2
17
PGND
OPTIONAL
SYNC
LXP
OUTPUT
DOWN TO -9V,
VP
3
16
PGND
10mA
POK
4
MAX685
15
PGND
POS
SEQ
FBN
NEG
SEQ
5
14
FBP
SHDN
6
13
REF
POWER-OK
INDICATOR
POK
GND
REF
24-TQFN (4mm x 4mm)
________________________________________________________________ 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 |
|---|---|
| MAX685ETG | 功能描述:直流/直流开关转换器 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 |
| MAX685ETG+ | 功能描述:直流/直流开关转换器 DC/DC Converter for CCD & LCD 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 |
| MAX685ETG+T | 功能描述:直流/直流开关转换器 DC/DC Converter for CCD & LCD 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 |
| MAX685ETG-T | 功能描述:直流/直流开关转换器 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 |
| MAX685EUE | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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