Features: `Single 12V Power Supply Required
`0.6V Reference with 1% Accurate
`Shutdown and Soft-start Function
`Programmable Frequency Range from 50 kHz to 1000kHz
`Voltage Mode PWM Control Design
`Up to 100% Duty Cycle
`Under-Voltage Protection
`Over-Current Protection
`SOP-14, QFN-16 Packages
`Lead FreeAvailable (RoHS Compliant)Application`Graphic Cards
`ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders.
Specifications
|
Symbol |
Parameter |
Rating |
Unit |
|
RT, OCSET,
SSDONE |
RT, OCSET, SSDONE to GND |
VCC+0.3 |
V |
|
FB, COMP, REFIN |
FB, COMP, REFIN to GND |
-0.3 to 7 |
V |
|
PGND |
PGND to GND |
-0.3 to +0.3 |
V |
|
TJ |
Junction Temperature Range |
-20 to 150 |
°C |
|
TSTG |
Storage Temperature |
-65 to 150 |
°C |
|
TSDR |
Soldering Temperature (10 Seconds) |
300 |
°C |
|
VESD |
Minimum ESD Rating |
±2 |
KV |
DescriptionThe APW7073 is voltage mode, synchronous PWM controller which drives dual N-channel MOSFETs. The device integrates all of the control, monitoring and
protecting functions into a single package, provides one controlled power output with under-voltage and over-current protections.
The APW7073 provides excellent regulation for output load variation. The internal 0.6V temperaturecompensated reference voltage is designed to meet the requirement of low output voltage applications. Thedeviceincludesa200kHzfree-runningtriangle-wave oscillator that is adjustable from 50kHz to 000kHz.
The APW7073 with excellent protection functions: POR, OCP and UVP. The Power-On-Reset (POR) circuit can monitor the VCC, EN, and OCSET voltage to make sure the supply voltage exceeds their threshold voltage while the controller is running. The Over-Current Protection (OCP) monitors the output current by using the voltage drop across the upper and lower MOSFET's RDS(ON). When the output current reaches the trip point, the controller will run the softstart function until the fault events are removed. The Under-Voltage Protection (UVP) monitors the voltage at FB pin (VFB) for short-circuit rotection, when the VFB is less than 50% of VREF, the controller will shutdown the IC directly.
APW7073 Data Sheet
