In order to enhance the efficiency performance, the LD5523M1 integrates the multi-mode PWM controller, which consists of Quasi-Resonant (QR) PWM control for light load condition and peak load mode for heavy load condition. Moreover, the QR controller not only gains the system performance, but also brings the worse EMI capability, while the frequency swapping.
Low Startup Current (<1A)
0.26mA Ultra-low operating current at light load
Current Mode Control with Cycle-by-Cycle Current
Limit
Green Mode Control
UVLO (Under Voltage Lockout)
LEB (Leading-Edge Blanking) on CS Pin
VCC OVP (Over Voltage Protection)
Adj. OVP (Over Voltage Protection) on FB pin.
OPP (Over Power Protection)
External OTP (Over Temperature Protection) on
CS Pin
Internal OTP (Over Temperature Protection)
SDSP (Secondary Diode Short Protection)
Gate Source/Sink Capability: 190mA/-150mA @
output pin with 33nF capacitor.
Applications
Switching AC/DC Adapto.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | LD5523 |
Leadtrend Technology |
Multi-Mode PWM Controller | |
2 | LD5523D2 |
Leadtrend |
PWM+QR Multi-mode Controller | |
3 | LD5523E |
Leadtrend Technology |
Multi-Mode PWM Controller | |
4 | LD5523H |
Leadtrend Technology |
Multi-Mode PWM Controller | |
5 | LD5523K |
Leadtrend |
Multi-Mode PWM Controller of Flyback | |
6 | LD5523P |
Leadtrend Technology |
Multi-Mode PWM Controller | |
7 | LD5523Q |
Leadtrend Technology |
Multi-Mode PWM Controller | |
8 | LD5523R |
Leadtrend Technology |
Multi-Mode PWM Controller | |
9 | LD5523T |
Leadtrend |
Multi-Mode PWM Controller of Flyback | |
10 | LD5520 |
Leadtrend |
Quasi-Resonant PWM Controller | |
11 | LD5521 |
Leadtrend |
Quasi-Resonant PWM Flyback Controller | |
12 | LD5525 |
Leadtrend Technology |
Multi-Mode PWM Controller |