Controller IC Chip - High-Performance Notebook PWM MOSFET APW7138 for laptop
Controller IC Chip - High-Performance Notebook PWM Controller MOSFET APW7138 APW 7138 chip for laptop - Ολοκληρωμένο τσιπ φορητού υπολογιστή (Κωδ.1-CHIP0299)
The APW7138 is a single-phase, constant-on-time, and synchronous PWM controller which drives N-channel MOSFETs. The APW7138 steps down high voltage of a battery to generate low-voltage chipset or RAM supplies in notebook computers. The APW7138 provides excellent transient response and accurate DC voltage output in either PFM or PWM Mode. In Pulse Frequency Modulation (PFM) Mode, the APW7138 provides very high efficiency over light load with loading-modulated switching frequencies. When the inductor current is continuous, the operation automatically enters PWM mode with relatively constant switching frequency. For QFN4x4-16A and TQFN3x3-16 packages, the Forced-PWM Mode works nearly at constant frequency for low-noise requirements. The APW7138 is equipped with accurate over-current, output under-voltage, and over-voltage protections per-fect for NB application. A Power-On-Reset function moni-tors the voltage on VCC pin to prevent errorneous opera-tion during power-on. The APW7138 has a digital soft-start and soft-stop. The internal integrated soft-start ramps up the output voltage with controlled slew rate to reduce the start-up current. The digital soft-stop function actively discharges the output capacitors with controlled reverse inductor current. The APW7138 is available in SSOP-16, QFN4x4-16A, and TQFN3x3-16 packages.
Adjustable Output Voltage from +0.6V to +3.3V - 0.6V Reference Voltage - °/0 Accuracy Over Temperature Operates from an Input Battery Voltage Range of +3V to +25V Wide Output Load Range from OA to 25A Power-On-Reset Monitoring on VCC Pin Excellent Line and Load Transient Response PFM Mode for Increased Light Load Efficiency Programmable PWM Frequency from 200kHz to 600kHz Integrated MOSFET Drivers and Bootstrap Diode Internal Integrated Soft-Start and Soft-Stop Selectable Forced PWM or Automatic PFM/PWM Mode (only for QFN4x4-16A and TQFN3x3-16 Packages) Power Good Monitoring Fault Identification by PGOOD Pull-Down Resistance 70% Under-Voltage Protection (UVP) 124% Over-Voltage Protection (OVP) Adjustable Over-Current Protection (OCP) - Sensing Low-Side MOSFET's Current Over-Temperature Protection (OTP) SSOP-16. Compact 4mmx4mm QFN-16 (QFN4x4- 16A). and TQFN3x3-16 Packages Lead Free and Green Devices Available (RoHS Compliant)
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Integrated Circuits (ICs)IC CHIP for laptop motherboards
1230866 1-CHIP0299 1-CHIP0299 Controller IC Chip - High-Performance Notebook PWM Controller MOSFET APW7138 APW 7138 chip for laptop - Ολοκληρωμένο τσιπ φορητού υπολογιστή (Κωδ.1-CHIP0299) Controller IC Chip - High-Performance Notebook PWM Controller MOSFET APW7138 APW 7138 chip for laptop - Ολοκληρωμένο τσιπ φορητού υπολογιστή (Κωδ.1-CHIP0299)
Please make sure you have advanced soldering skill to solder the chips that you will order from us. When you receive before using it, please confirm the chip you received is brand new as described,if you suspect the chip is not new or not as described. Please don't use it and contact us immediately. Once it has been used, no return will be accepted. Please check before you buy it.Thanks for your understanding.
Lead solder balls' melting point is 180?, 210?-215? is the best melting temperature.
Lead Free solder balls' melting point is 217?, 235?-245? is the best melting temperature.
The temperatures listed above are the chip's solder balls actual temperatures (they are measured by the measuring wire on theBGA machine),but not the temperatures from the BGA rework station's top bottom heat guns.
If soldering a new Lead solder balls chip with Lead Free temperature curve (profile), it will overheat the new chip.
If soldering a new Lead Free solder balls chip with Lead temperature curve (profile), it will not completely melt the lead free solder balls on the new chip.
Most of the laser head have one or twoanti-static pointto prevent static burn laser tube as a security measure. It's better to wear an antistatic wrist strap or wash your hands before welding and installation.
When using a high-grade anti-static soldering iron,you can remove the anti-static point directly, ordinary iron requires special attention, heat iron to reached soldering temperature,then remember to turn off the iron's power, prevent static of iron burn laser tube