- 您现在的位置：买卖IC网 > PDF目录97995 > L5994A (STMICROELECTRONICS) 1 A DUAL SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PQFP32 PDF资料下载
参数资料
| 型号： | L5994A |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A DUAL SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PQFP32 |
| 封装： | TQFP-32 |
| 文件页数： | 5/26页 |
| 文件大小： | 322K |
| 代理商： | L5994A |
Obsolete
Product(s)
- Obsolete
Product(s)
13/26
L5994 - L5994A
The 5V regulator is always active, even if both PWM regulators are disabled, as long as power is applied to the
chip.
The 2.5V reference voltage generator, provides comparison levels for threshold detection and device operation.
It is allowed to source up to 5mA to an external load from its buffered output, externally available through pin
VREF.
The reference voltage generator is active if at least one of the two RUNx signal is asserted.
If either PREG5 or VREF does not deliver the correct voltage, the device is shut down.
Figure 6. Controlled timing sequencies
t
RUN2
VOUT2
RUN1
t
VOUT1
t
CRST
PWROK1
t
RUN2
VOUT2
H2GATE
t
R2GATE
t
CRST
t
PWROK2
t
RUN1
t
VOUT1
t
H1GATE
t
R1GATE
a) TURN-ON TIMING SEQUENCE
b) SHUTDOWN TIMING SEQUENCE (1)
t
RUN2
VOUT2
H2GATE
t
R2GATE
t
CRST
t
PWROK2
t
RUN1
t
VOUT1
t
H1GATE
t
R1GATE
c) SHUTDOWN TIMING SEQUENCE (2)
t
H2GATE
t
R2GATE
t
VOUT2
t
PWROK
t
VOUT1
CRST
t
H1GATE
t
R1GATE
d) OVP TIMING SEQUENCE
PWROK2
t
PWROK1
t
PWROK1
相关PDF资料 |
PDF描述 |
|---|---|
| L5994 | 1 A DUAL SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PQFP32 |
| L6206PD013TR | STEPPER MOTOR CONTROLLER, 5.6 A, PDSO36 |
| L6207PD013TR | STEPPER MOTOR CONTROLLER, 5.6 A, PDSO36 |
| L6219DSA | STEPPER MOTOR CONTROLLER, 1 A, PDSO24 |
| L6228PDTR | STEPPER MOTOR CONTROLLER, 2.8 A, PDSO36 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| L5995 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Current-Mode SMPS Controller |
| L5996 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5 BIT DYNAMIC DAC CONTROLLER FOR MOBILE CPU |
| L-59BL/1EGW | 制造商:Kingbright Corporation 功能描述: 制造商:Kingbright Corporation 功能描述:LED 5MM RED/GREEN 40MCD/60MCD 制造商:Kingbright Corporation 功能描述:LED, 5MM, RED/GREEN, 40MCD/60MCD 制造商:Kingbright Corporation 功能描述:LED, 5MM, RED/GREEN, 40MCD/60MCD, LED Colour:Red, Green, Height:7.24mm, Width:7. 制造商:Kingbright Corporation 功能描述:Red/grn r/a cbi,5mm,L-59BL/1EGW |
| L-59BL/1EYW | 制造商:Kingbright Corporation 功能描述: 制造商:Kingbright Corporation 功能描述:LED 5MM RED/YELLOW 40MCD/40MCD 制造商:Kingbright Corporation 功能描述:LED, 5MM, RED/YELLOW, 40MCD/40MCD 制造商:Kingbright Corporation 功能描述:LED, 5MM, RED/YELLOW, 40MCD/40MCD, LED Colour:Red, Yellow, Height:7.24mm, Width: |
| L-59BL/1GEW | 制造商:Kingbright Corporation 功能描述: |
发布紧急采购，3分钟左右您将得到回复。