中文
EnglishThe APW7290 is a high efficiency monolithic synchro- nous buck regulator. APW7290 operates with a constant 1.5MHz switching frequency and using the inductor cur- rent as a controlled quantity in th
Features
1A Output Current
Support 4 AA alkaline, NiCd or NiMH batteries
Wide 3.5V~7.2V Input Voltage
Fixed 1.5MHz Switching Frequency
Low Dropout Operating at 100% duty cycle
Low 25µA Quiescent Current
Integrate Synchronous Rectifier
0.6V Low Reference Voltage
<0.5µA Input Current during Shutdown
Current-Mode Operation with Internal
Compensation
- Stable with Ceramic Output Capacitors
- Fast Line Transient Response
Short-Circuit Protection
Over-Temperature Protection with Hysteresis
Available in TDFN2x2-8 Package
Lead Free and Green Devices Available
General Description
The APW7290 is a high efficiency monolithic synchro-
nous buck regulator. APW7290 operates with a constant
1.5MHz switching frequency and using the inductor cur-
rent as a controlled quantity in the current mode
architecture. The 3.5V to 7.2V input voltage range makes
the APW7290 ideally suited for single Li-Ion battery pow-
ered applications. 100% duty cycle provides low dropout
operation, extending battery life in portable electrical
devices. The internally fixed 1.5MHz operating frequency
allows the use of small surface mount inductors and
capacitors. The synchronous switches included inside
increase the efficiency and eliminate the need for an ex-
ternal Schottky diode.
The APW7290 is available in TDFN2x2-8 package.
相关产品
Part_No | Package & Pins | Topology | Archit ecture | No. of PWM Outputs | Drive Lout (A) | Vin (V) | Fmax(Khz) | Vref (V) | R-Top (milohm) | R-Sync (milohm) | Iq (No load) (uA) | |
min | max | |||||||||||
APW7083 | TQFN5x6-28 | Buck | CM | 1 | 5 | 4.5 | 26 | 380 | 0.8 | 50 | 20 | 1000 |
APW7085 | SOP-8 | Buck | CM | 1 | 2 | 4.5 | 26 | 380 | 0.8 | 100 | 1000 | |
APW7089 | SOP-8P | Buck | CM | 1 | 4 | 4.5 | 26 | 380 | 0.8 | 80 | 1000 | |
APW7104 | SOT-23-5 | Buck | CM | 1 | 1 | 2.7 | 6 | 1500 | 0.6 | 280 | 250 | 25 |
APW7104A | SOT-23-5 | Buck | CM | 1 | 1 | 2.7 | 6 | 1500 | 0.6 | 280 | 250 | |
APW7142 | SOP-8 | Buck | CM | 1 | 3 | 4.3 | 14 | 500 | 0.8 | 70 | 70 | 500 |
APW7145 | SOP-8P | Buck | CM | 1 | 3 | 4.3 | 14 | 500 | 0.8 | 55 | 45 | 500 |
APW7153B | TDFN3x3-10 | 3 | 2.6 | 5.5 | 2000 | 0.8 | 110 | 110 | 460 | |||
APW7176 | TDFN3x3-10 | Buck | CM | 2 | 1 | 2.7 | 6 | 1500 | 0.6 | 280 | 250 | 500 |
APW7176A | TDFN3x3-10 | Buck | CM | 2 | 1 | 2.7 | 6 | 1500 | 0.6 | 280 | 250 | |
APW7178 | TDFN2x2-6 | Buck | CM | 1 | 1 | 2.7 | 6 | 1500 | 0.6 | 280 | 250 | 25 |
APW7178A | TDFN2x2-6 | Buck | CM | 1 | 1 | 2.7 | 6 | 1500 | 0.6 | 280 | 250 | |
APW7179 | TDFN3x3-12 | Buck | CM | 2 | 1 | 2.7 | 6 | 1500 | 0.6 | 280 | 250 | 25 |
APW7179A | TDFN3x3-12 | Buck | CM | 2 | 1 | 2.7 | 6 | 1500 | 0.6 | 280 | 250 | |
APW7290 | TDFN2x2-8 | CM | 1 | 1 | 3.3 | 8 | 1500 | 0.6 | 280 | 250 | 25 | |
APW7300 | SOP-8 | Buck | CM | 1 | 2 | 4.5 | 24 | 340 | 0.925 | 110 | 110 | 1900 |
APW7301 | SOP-8P | Buck | CM | 1 | 3 | 4.5 | 24 | 340 | 0.925 | 110 | 110 | 1900 |
APW7302 | SOP-8 | Buck | CM | 1 | 2 | 4.5 | 24 | 340 | 0.92 | 130 | 130 | 1900 |
APW7302B | SOP-8P | Buck | CM | 1 | 2 | 4.5 | 24 | 340 | 0.92 | 130 | 130 | 1900 |
APW7303 | SOP-8P | Buck | CM | 1 | 3 | 4.5 | 24 | 340 | 0.92 | 85 | 85 | 1900 |
APW7304 | SOP-8P | Buck | CM | 1 | 4 | 4.5 | 24 | 340 | 0.8 | 85 | 85 | 1900 |
APW7311 | SOP-8P | Buck | CM | 1 | 3 | 4.5 | 24 | 1300 | 0.925 | 110 | 110 | 1900 |
APW7312 | SOP-8 | Buck | CM | 1 | 2 | 4.5 | 24 | 340 | 0.925 | 110 | 110 | 1900 |
APW7313 | SOP-8P | Buck | CM | 1 | 3 | 4.5 | 24 | 340 | 0.925 | 110 | 110 | 1900 |
APW7314 | TSOT-23-8 | Buck | CM | 1 | 2 | 4.5 | 24 | 500 | 0.8 | 150 | 70 | 500 |
APW7322 | SOP-8P | Buck | CM | 1 | 2 | 2.5 | 6 | 1000 | 0.8 | 85 | 75 | 460 |
APW7323 | SOP-8P | Buck | CM | 1 | 3.2 | 2.5 | 6 | 1000 | 0.8 | 85 | 75 | 460 |
APW7324 | SOP-8P | Buck | CM | 1 | 4 | 2.5 | 6 | 500 | 0.8 | 85 | 75 | 460 |
APW7325 | SOP-8P | Buck | CM | 1 | 5 | 2.5 | 6 | 1000 | 0.6 | 65 | 55 | 460 |
APW7334 | SOP-8 | Buck | CM | 1 | 2 | 4.5 | 24 | 340 | 0.8 | 110 | 110 | 1900 |
APW7335 | SOP-8P | Buck | CM | 1 | 3 | 4.5 | 24 | 340 | 0.8 | 110 | 110 | 1900 |
APW7336 | TDFN3x3-10 | Buck | CM | 1 | 2 | 4.5 | 24 | 340 | 0.8 | 110 | 110 | 1900 |
APW7337 | TDFN3x3-10 | Buck | CM | 1 | 3 | 4.5 | 24 | 340 | 0.8 | 110 | 110 | 1900 |
APW8713 | TQFN4x4-23 | Buck | COT | 1 | 6 | 2.7 | 28 | 100~1000 | 0.8 | 30 | 9 | 750 |
APW8802 | TQFN5x6-28 | Buck | COT | 1 | 8 | 3 | 25 | 500 | 0.75 | 12 | 12 | 400 |
APW8804 | TDFN3x3-10 | Buck | CM | 1 | 3 | 2.6 | 6 | 1000 | 0.6 | 65 | 55 | 460 |
APW8805 | TDFN3x3-10 | Buck | CM | 1 | 3 | 2.6 | 6 | 1000 | 0.6 | 75 | 55 | 460 |
APW8807 | TQFN3x3-16 | Buck | COT | 1 | 8 | 6 | 28 | 500 | 0.6 | 24 | 14 | 80 |
APW8824 | TSOT-23-6 | Buck | CM | 1 | 1 | 2.7 | 5.5 | 1500 | 0.6 | 280 | 250 | 25 |
APW8835 | TDFN3x3-10 | Buck | CM | 1 | 3 | 4.5 | 24 | 600 | 0.8 | 70 | 70 | 400 |
APW7414 | TSOT-23-8A | Buck | CM | 1 | 2 | 4.5 | 24 | 500 | 0.788 | 150 | 70 | 1000 |
APW7319 | TSOT-23-8A | Buck | CM | 1 | 2.5 | 4.5 | 24 | 500 | 0.807 | 140 | 60 | 1000 |
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