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| 型号： | MAX890LESA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/8页 |
| 文件大小： | 0K |
| 描述： | IC SW MOSFET PUR PCH HSIDE 8SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 高端开关 |
| 输出数： | 1 |
| Rds（开）： | 130 毫欧 |
| 内部开关： | 是 |
| 电流限制： | 1.2A |
| 输入电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
19-1774; Rev 0; 7/00
ATION
AILABL
EVALU E
AV
KIT
High-Frequency, Regulated,
200mA, Inverting Charge Pump
General Description
The MAX889 inverting charge pump delivers a regulated
negative output voltage at loads of up to 200mA. The
device operates with inputs from 2.7V to 5.5V to produce
an adjustable, regulated output from -2.5V to -V IN .
The MAX889 is available with an operating frequency of
2MHz (T version), 1MHz (S version), or 0.5MHz (R ver-
sion). The higher switching frequency devices allow the
use of smaller capacitors for space-limited applica-
tions. The lower frequency devices have lower quies-
cent current.
The MAX889 also features a 0.1μA logic-controlled
shutdown mode and is available in an 8-pin SO pack-
age. An evaluation kit, MAX889SEVKIT, is available.
________________________Applications
Features
o 200mA Output Current
o Up to 2MHz Switching Frequency
o Small Capacitors (1μF)
o +2.7V to +5.5V Input Voltage Range
o Adjustable Regulated Negative Output
(-2.5V to -V IN )
o 0.1μA Logic-Controlled Shutdown
o Low 0.05 ? Output Resistance (in regulation)
o Soft-Start and Foldback Current Limited
o Short-Circuit and Thermal Shutdown Protected
o 8-Pin SO Package
Ordering Information
TFT Panels
TEMP.
PIN-
SWITCHING
Hard Disk Drives
PART
RANGE
PACKAGE FREQUENCY
Camcorders
Digital Cameras
Measurement Instruments
MAX889TESA
MAX889SESA
MAX889RESA
-40 ° C to +85 ° C
-40 ° C to +85 ° C
-40 ° C to +85 ° C
8 SO
8 SO
8 SO
2MHz
1MHz
0.5MHz
Battery-Powered Applications
Typical Operating Circuit
INPUT +2.7V TO +5.5V
TOP VIEW
Pin Configuration
OFF
ON
SHDN
IN
FB
REGULATED
NEGATIVE
IN
1
8
AGND
CAP+ MAX889
OUT
OUTPUT
(UP TO -1 × V IN ,
UP TO 200mA)
CAP+
GND
2
3
MAX889
7
6
FB
SHDN
CAP-
AGND
GND
CAP- 4
5
OUT
SO
________________________________________________________________ Maxim Integrated Products
1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
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