参数资料
型号: MAX844ISA+T
厂商: Maxim Integrated Products
文件页数: 7/10页
文件大小: 0K
描述: IC BIAS GAASFET REG 8-SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
应用: 充电泵,手机发射器
输入电压: 2.5 V ~ 10 V
输出数: 1
输出电压: -2V
工作温度: -25°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)
Low-Noise, Regulated, -2V GaAsFET Bias
______________________________________________________________Pin Description
PIN
MAX840
1
2
3
4
5
6
7
8
MAX843
MAX844
1
2
3
4
5
6
7
8
NAME
C1+
C1-
NEGOUT
SHDN
FB
CONT
OUT
GND
IN
FUNCTION
Positive Terminal for C1
Negative Terminal for C1
Negative Output Voltage (unregulated)
Active-Low, TTL Logic-Level Shutdown Input
Dual Mode? Feedback Input. When FB is grounded, the output is preset to -2V. To
select other output voltages, connect FB to an external resistor divider (Figure 2b).
Control Voltage Input. To set V OUT , connect a resistor divider between OUT and a
positive control voltage between 0V and 10V (Figure 2c).
Regulated Negative Output Voltage
Ground
Positive Power-Supply Input
Dual Mode is a trademark of Maxim Integrated Products.
C1+
IN
C1-
NEGOUT
CHARGE
PUMP
N
MAX840
OUT
C1+
C1-
NEGOUT
CHARGE
PUMP
N
MAX843
MAX844
IN
OUT
SHDN
FB
-0.5V
REF
Figure 1a. MAX840 Block Diagram
GND
CONNECT TO
GND TO SET
V OUT = -2V
SHDN
GND
Figure 1b. MAX843/MAX844 Block Diagram
R2
CONT
R1
CONTROL
VOLTAGE
_______________________________________________________________________________________
7
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