中文
EnglishThe APW8828 is a single-phase, constant-on-time, synchronous PWM controller, which drives N-channel MOSFETs. The APW8828 steps down high voltage to generate low-voltage chipset or RAM supplies in n
Features
Adjustable Output Voltage from +0.7V to +5.5V
- 0.7V Reference Voltage
- ±1% Accuracy Over-Temperature
Operates from an Input Battery Voltage Range of
+1.8V to +28V
Power-On-Reset Monitoring on VCC Pin
Excellent Line and Load Transient Responses
PFM Mode for Increased Light Load Efficiency
Selectable PWM Frequency from 4 Preset Values
Integrated MOSFET Drivers
Integrated Bootstrap Forward P-CH MOSFET
Adjustable Integrated Soft-Start and Soft-Stop
Selectable Forced PWM or Automatic PFM/PWM
Mode
Power Good Monitoring
70% Under-Voltage Protection
125% Over-Voltage Protection
Adjustable Current-Limit Protection
- Using Sense Low-Side MOSFET’s RDS(ON)
Over-Temperature Protection
TDFN-10 3x3 Package
Lead Free and Green Devices Available
General Description
The APW8828 is a single-phase, constant-on-time,
synchronous PWM controller, which drives N-channel
MOSFETs. The APW8828 steps down high voltage to
generate low-voltage chipset or RAM supplies in notebook
computers.
The APW8828 provides excellent transient response and
accurate DC voltage output in either PFM or PWM Mode.
In Pulse Frequency Mode (PFM), the APW8828 provides
very high efficiency over light to heavy loads with loading-
modulated switching frequencies. In PWM Mode, the
converter works nearly at constant frequency for low-noise
requirements.
The APW8828 is equipped with accurate positive current-
limit, output under-voltage, and output over-voltage
protections, perfect for NB applications. The Power-On-
Reset function monitors the voltage on VCC to prevent
wrong operation during power-on. The APW8828 has a
1ms digital soft-start and built-in an integrated output
discharge method for soft-stop. An internal integrated
soft-start ramps up the output voltage with programmable
slew rate to reduce the start-up current. A soft-stop function
actively discharges the output capacitors with controlled
reverse inductor current.
The APW8828 is available in 10pin TDFN 3x3 package.
(RoHS Compliant)
Simplified Application Circuit
相关产品
Part_No | Package & Pins | Topology | Architecture | Phase | No. of PWM Outputs | Output Current (max)(A) | Input Voltage (V) | Reference Voltage(V) | Bias Voltage (typ) (V) | Quiescent Current (typ)(uA) | |
min | max | ||||||||||
APW7068 | SOP-14 | Buck | VM | 1 | 1 | 30 | 2.9 | 13.2 | 0.9 | 12 | 8000 |
APW7065 | SOP-8 | Buck | VM | 1 | 1 | 20 | 2.9 | 13.2 | 0.8 | 12 | 5000 |
APW7065C | SOP-8 | Buck | VM | 1 | 1 | 20 | 2.9 | 13.2 | 0.8 | 12 | 5000 |
APW7098 | QFN4x4-24 | Multiphase | VM | 2 | 1 | 60 | 3.1 | 13.2 | 0.6 | 12 | 5000 |
APW7120 | SOP-8 | Buck | VM | 1 | 1 | 20 | 2.2 | 13.2 | 0.8 | 5 / 12 | 2100 |
APW7120A | SOP-8 | Buck | VM | 1 | 1 | 20 | 2.2 | 13.2 | 0.8 | 5 / 12 | 2100 |
APW7037/A/B | SOP-8 | Buck | VM | 1 | 1 | 5 | 5 | 13.2 | 1.25 / 0.8 | 5 / 12 | 3000 |
APW7057 | SOP-8 | Buck | VM | 1 | 1 | 10 | 3.3 | 5.5 | 0.8 | 5 | 2100 |
APW7062B | SOP-14 | Buck | VM | 1 | 1 | 10 | 5 | 13.2 | 0.8 | 12 | 2000 |
APW7066 | TSSOP-24 | Buck | VM | 1 | 2 | 20 | 5 | 13.2 | 0.6 | 5 / 12 | 4000 |
APW7067N | SOP-14 | Buck | VM | 1 | 1 | 30 | 2.9 | 13.2 | 0.9 | 12 | 4000 |
APW7073 | SOP-14 | Buck | VM | 1 | 1 | 30 | 2.2 | 13.2 | 0.6 | 12 | 5000 |
APW7073A | SOP-14 | Buck | VM | 1 | 1 | 30 | 2.2 | 13.2 | 0.6 | 12 | 5000 |
APW7074 | SOP-14 | Buck | VM | 1 | 1 | 25 | 2.2 | 13.2 | 0.8 | 12 | 5000 |
APW7095/A | LQFP7x7-48 | Buck | VM | 1 | 6 | 0.015 | 1.4 | 6.5 | - | 5 | 1800 |
APW7116 | TSSOP-24P | Buck | VM | 1 | 2 | 20 | 2.97 | 5.5 | 0.8 | 5 / 12 | 5000 |
APW7063 | SOP-14 | Buck | VM | 1 | 1 | 10 | 5 | 13.2 | 0.8 | 12 | 3000 |
APW7064 | SOP-8-P | Buck | VM | 1 | 1 | 30 | 2.9 | 13.2 | 1.2 | 12 | 3000 |
APW7108 | SSOP-28 | Buck | VM | 1 | 2 | 20 | 5 | 24 | 0.9 | 5 | 1200 |
APW7158 | SOP-20 | Buck | VM | 1 | 2 | 20 | 2.2 | 13.2 | 0.6 | 5 / 12 | 4000 |
APW7181 | SOP-8 | VM | 1 | 2 | - | - | - | - | 5 / 12 | 550 | |
APW38HC/42/3/4/5A | DIP-8 | Buck | VM | 1 | 1 | 1 | 1.2 | 9 | 24 | 5 | 9 ~ 24 |
APW7138 | SSOP-16 | Buck | VM | 1 | 1 | 25 | 3 | 25 | 0.6 | 5 | 1700 |
APW7199 | TDFN3x3-10 | Buck | COT | 1 | 1 | 25 | 3 | 25 | 0.5 | 5 | 350 |
APW8700 | QFN4x4-24 | Buck | CM | 2 | 1 | 40 | 4.5 | 13.2 | 0.6 | 5 / 12 | 4000 |
APW8720B | SOP8-P | Buck | VM | 1 | 1 | 20 | 3 | 13.2 | 0.8 | 5 / 12 | 2500 |
APW8722A/B/C/D | SOP8-P | Buck | VM | 1 | 1 | 25 | 3 | 13.2 | 0.6 /0.8 | 5 / 12 | 1200 |
APW8723 | TDFN3x3-10 | Buck | VM | 1 | 1 | 25 | 4 | 13.2 | 0.8 | 5 / 12 | 2000 |
APW8724 | TDFN3x3-10 | Buck | COT | 1 | 1 | 25 | 4.5 | 25 | 0.6 | 5 / 12 | 80 |
APW8725/A | SOP-8P | Buck | VM | 1 | 1 | 25 | 4.5 | 13.2 | 0.8 | 5 / 12 | 16000 |
APW8726 | TQFN3x3-10 | Buck | VM | 1 | 1 | 25 | 4.5 | 13.2 | 0.6 | 5 / 12 | 2500 |
APW8727/L | TDFN3x3-10 | Buck | COT | 1 | 1 | 30 | 3 | 25 | 0.8 | 5 / 12 | 2000 |
APW8728 | TQFN3x3-16 | Buck | COT | 1 | 1 | 30 | 1.8 | 28 | 0.6 | 5 | 600 |
APW8732 | QFN4x4-24 | Buck | VM | 2 | 1 | 50 | 4.5 | 13.2 | 0.6 | 5 / 12 | 5000 |
APW8811 | TQFN4x4-24 | Buck | COT | 1 | 2 | 15 | 6 | 25 | 2 | N | 550 |
APW8812 | TQFN4x4-24 | Buck | COT | 1 | 2 | 15 | 6 | 25 | 2 | N | 550 |
APW8813/A | TQFN4x4-24 | Buck | COT | 1 | 2 | 20 | 3 | 28 | 0.75 | 5 | 800 |
APW8814 | TQFN3x3-16 | Buck | COT | 1 | 1 | 20 | 1.8 | 28 | 0.75 | 5 | 400 |
APW8815 | QFN3.5x3.5-14 | Buck | COT | 1 | 1 | 20 | 1.8 | 28 | 0.75 | 5 | 400 |
APW8816 | TQFN3x3-16 | Buck | COT | 1 | 2 | 20 | 1.8 | 28 | 0.75 | 5 | 400 |
APW8819 | QFN3x3-20 | Buck | COT | 1 | 2 | 20 | 3 | 28 | 1.8 /1.5 /0.5 | 5 | 740 |
APW8820 | TQFN4x4-24 | Buck | CM | 1 | 2 | 15 | 5 | 28 | 0.5 | N | 3000 |
APW8821 | TDFN3x3-10 | Buck | COT | 1 | 1 | 20 | 1.8 | 28 | 0.5 | 5 | 250 |
APW8822/C | TQFN3x3-20 | Buck | COT | 1 | 2 | 15 | 6 | 25 | 2 | N | 550 |
APW8823A/B | TQFN3x3-20 | Buck | COT | 1 | 2 | 15 | 5.5 | 25 | 0.6 | N | 50 |
APW8868 | TQFN3x3-20 | Buck | COT | 1 | 2 | 20 | 3 | 28 | 0.75 | 5 | 180 |
APW7088 | QFN4x4-24 | Multiphase | VM | 2 | 1 | 60 | 3.1 | 13.2 | 0.85 | 12 | 5000 |
APW7165A/B/C | SOP-8P | Buck | VM | 1 | 1 | 20 | 2.9 | 13.2 | 0.8 | 12 | 16000 |
APW7159A | SOP-20 | Buck | VM | 2 | 2 | 30 | 10 | 13.2 | 1 | 12 | 5000 |
APW8828 | TDFN3x3-10 | Buck | COT | 1 | 1 | 25 | 1.8 | 28 | 0.7 | 5 | 250 |
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