- 您现在的位置：买卖IC网 > PDF目录383342 > MAX1940EEE (MAXIM INTEGRATED PRODUCTS INC) Triple USB Switch with Autoreset and Fault Blanking PDF资料下载
参数资料
| 型号： | MAX1940EEE |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | Triple USB Switch with Autoreset and Fault Blanking |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封装： | QSOP-16 |
| 文件页数： | 8/12页 |
| 文件大小： | 326K |
| 代理商： | MAX1940EEE |
M
Detailed Description
The MAX1940 triple current-limited USB power switch
provides three independent switches, each with its own
enable-control input and fault indicator (see Figure 1).
A logic input sets the active polarity of the enable con-
trol inputs. The fault indicators notify the system when
the current-limit, short-circuit, undervoltage lockout, or
thermal-shutdown threshold is exceeded.
The MAX1940 operates from a 4V to 5.5V input supply
and supplies a minimum output current of 700mA per
channel. A built-in current limit of 0.9A (typ) limits the
output current in the event of an overload condition.
Built-in short-circuit detection pulses the output current if
the output voltage falls below 1V, resulting in lower RMS
output current and reduced power dissipation in the
device. Independent thermal shutdown allows normal
operation to continue if one channel experiences a pro-
longed overload or short-circuit condition.
Low-R
ON
NMOS switches enable the MAX1940 to pro-
vide three switches in the space-saving 16-pin QSOP
package. An internal micropower charge pump gener-
ates the high-side supply needed for driving the gates
of these high-side switches. Separate current-limiting
and thermal-shutdown circuitry permits each switch to
operate independently, improving system robustness.
Triple USB Switch with Autoreset and
Fault Blanking
8
_______________________________________________________________________________________
FAULT LOGIC
20ms TIMERS
THERMAL
SHUTDOWN
CHARGE
PUMP
SWITCH B
(SEE SWITCH A)
SWITCH C
(SEE SWITCH A)
BIAS
REF
UVLO
OSC
25kHz
25mA
ILIM
SWITCH A
(EXPANDED)
IN2
IN_
FAULTA
FAULTB
FAULTC
OUTC
OUTA
IN2 IN3
IN4
IN5
GND
ONC
ONB
SEL
IN1
ONA
OUTB
MAX1940
Figure 1. Functional Diagram
相关PDF资料 |
PDF描述 |
|---|---|
| MAX194ACPE | 14-Bit, 85ksps ADC with 10A Shutdown |
| MAX194AEWE | Circular Connector; No. of Contacts:22; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:13; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:13-35 RoHS Compliant: No |
| MAX194BCWE | 14-Bit, 85ksps ADC with 10A Shutdown |
| MAX194BCPE | 14-Bit, 85ksps ADC with 10A Shutdown |
| MAX194ACWE | 14-Bit, 85ksps ADC with 10A Shutdown |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1940EEE+ | 功能描述:电源开关 IC - USB Triple USB Switch w/Autoreset RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube |
| MAX1940EEE+T | 功能描述:电源开关 IC - USB Triple USB Switch w/Autoreset RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube |
| MAX1940EEE-T | 功能描述:电源开关 IC - USB Triple USB Switch w/Autoreset RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube |
| MAX1945EVKIT | 制造商:Maxim Integrated Products 功能描述:1MHZ, 1% ACCURATE, 6A INTERNAL SWITCH STEP-DO - Bulk |
| MAX1945REUI | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
发布紧急采购，3分钟左右您将得到回复。