Controller IC Chip - ANPEC APW7138 SSOP-16Pin

PWM Controller IC Power Chip - ANPEC APW7138 SSOP-16Pin

Συμβατά P/N & μοντέλα:

 APW7138, APW7138 SSOP, APW7138 SSOP-16

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 APW7138provides 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 perfect for NB application. A Power-On-Reset function monitors  the voltage on VCC pin to prevent errorneous operation during power-on. The APW7138 has a digital soft-start and soft-stop. The internal integrated soft-start ramp sup the output voltage with controlled slew rate to reduce the start-up current. 

The digital soft-stop function active lydis charges the output capacitors with controlled reverse inductor current. The APW7138 is available in SSOP-16, QFN4x4-16A, and TQFN3x3-16 packages.