- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄97997 > LB11947 BRUSH DC MOTOR CONTROLLER, 1.75 A, PDIP28 PDF資料下載
參數(shù)資料
| 型號： | LB11947 |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 1.75 A, PDIP28 |
| 封裝： | 0.500 INCH, DIP-28 |
| 文件頁數(shù)： | 12/14頁 |
| 文件大小： | 154K |
| 代理商： | LB11947 |
LB11947
No.7318-7/14
Descriptions of Each Function
Switching regulator, over-current limit operation time chart
The DC/DC over-current limit value is determined from the resistor connected between VBB and current sense pin.
Current limit value = 0.5 (V)/RL
Using about 75% from the upper threshold to lower threshold of the OSC triangular oscillation waveform and using the
mask circuit within the OSC charge section, the output of the over-current detection comparator is masked. This can
prevent detection error due to output switching noise.
When over-current flows through the output transistor, this over-current is detected if the ON width exceeding the
overcurrent detection threshold of IPSEN pin is more than the mask width. The counter is activated when over-current is
detected. If over-current is detected further after counting of four shots of OSC oscillation frequency, the output transistor
is turned OFF and latched in this condition. If no over-current is detected up to the eighth shot after counting of four shots,
the over-current condition is determined to be cancelled and the counter is reset, but the output transistor is not turned
OFF.
If the output transistor is latched to the OFF condition, recharge of VBB power supply causes canceling of the latch
condition.
VBB
VCC
CSS
IPSEN
OSC
Logic RESET
9V
“HI” RESET
Output OFF latch
Output OFF latch cancelled
Output OFF latch
Latch canceling
8V
1.3V
Mask threshold level
Over-current
mask width
Charge mask section
Over-current
detection threshold
Over-current
detection output
45V
5V
4V
VCC OFF
Soft start
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LB11948T | STEPPER MOTOR CONTROLLER, 0.5 A, PDSO30 |
| LB1814M | DISK DRIVE MOTOR CONTROLLER, 1 A, PDSO36 |
| LB1821M | BRUSHLESS DC MOTOR CONTROLLER, 0.03 A, PQFP44 |
| LB1823M | BRUSHLESS DC MOTOR CONTROLLER, 0.03 A, PDSO30 |
| LB1875 | BRUSHLESS DC MOTOR CONTROLLER, 0.03 A, PDSO36 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LB11948T | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Digital IC PWM Constant Current Control 1-2 Phase Excitation Stepping Motor Driver |
| LB11948T_07 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PWM Constant Current Control 1-2 Phase Excitation Stepping Motor Driver |
| LB11948T_10 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PWM Constant Current Control 1-2 Phase Excitation Stepping Motor Driver |
| LB11948T-MPB-E | 功能描述:馬達/運動/點火控制器和驅(qū)動器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| LB11948T-TLM-E | 功能描述:馬達/運動/點火控制器和驅(qū)動器 PRINTER RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。