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L4990A |
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| Part Number | L4990A |
| Manufacturer | STMicroelectronics (https://www.st.com/) |
| Description | This primary controller I.C., developed in BCD60II technology, has been designed to implement off BLOCK DIAGRAM SYNC 1 RCT 2 TIMING 25V DC-LIM 15 MULTIPOWER BCD TECHNOLOGY DIP16 SO16W ORDERING NUM... |
| Features |
as programmable soft start, IN/OUT synchronization, disable (to be used for over voltage protection and for power management), precise maximum Duty Cycle Control, 100ns (typ) leading edge blanking on current sense, pulse by pulse current limit and overcurrent protection with soft start intervention.
VCC 8
VREF 4
3 DC 14 DIS 2.5V
+ + T DIS
Vref +
16V/10V
-
PWM UVLO 9 VC
13V BLANKING S R
PWM
10
OUT
Q
OVER CURRENT ISEN 13 + FAULT SOFT-START
VREF OK CLK DIS
11
PGND
SS 7
1.2V
2.5V +
E/A
2R 1V R 12 SGND 6 COMP
-
5
VFB
D98IN1002
July 1999
1/24
L4990 - L4990A
ABSOLUTE MAXIMU... |
| Document |
 L4990A Data Sheet
PDF 322.28KB |
| No. | Parte # | Fabricante | Descripción | Hoja de Datos |
|---|---|---|---|---|
| 1 | L4990 |
STMicroelectronics |
PRIMARY CONTROLLER |
|
| 2 | L4992 |
STMicroelectronics |
TRIPLE OUTPUT POWER SUPPLY CONTROLLER |
|
| 3 | L4993 |
STMicroelectronics |
Low drop voltage regulator |
|
| 4 | L4995 |
STMicroelectronics |
500mA low drop voltage regulator |
|
| 5 | L4901A |
STMicroelectronics |
DUAL 5V REGULATOR WITH RESET |
|
| 6 | L4902A |
STMicroelectronics |
DUAL 5V REGULATOR WITH RESET AND DISABLE |
|
Desde 2024. D4U Semiconductor.
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