Power
来自Jack's Lab
(版本间的差异)
(→F7298/MP150) |
(→3.3V LDO) |
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第19行: | 第19行: | ||
== DC to DC == | == DC to DC == | ||
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=== WL2803E === | === WL2803E === |
2017年10月17日 (二) 08:16的版本
目录 |
1 AC to DC
1.1 F7298/MP155
主控非隔离电源芯片 F7298 典型应用电路:
1.2 12V
220V switch to 12V constant voltage power supply model, rated 12W and 1A current output
- ACT522/ACT520/ACT41x http://www.active-semi.com/products/acdc-converters/secondary-side-regulators/
- OB2263/OB2273 http://www.on-bright.com/cn/english/products_PWM.htm
2 DC to DC
2.1 WL2803E
- Feature
- 500mA CMOS LDO
- Ultra low dropout, 130mV (Typ.) @ 500mA load current
- The quiescent current is typically 150uA
- Vin MAX = 6.5V
- SOT23-5 small package
- Output 3.3V is marking WS33/YYWW (YY - Year code, WW - Week code)
2.2 AP2112
- Feature
- 600mA CMOS LDO
- Low Dropout Voltage (3.3V): 250mV (Typ.) @ 600mA
- Low Quiescent Current: 55μA (Typ.)
- Low Standby Current: 0.01μA (Typ.)
- Vin MAX = 6.5V
- Provides SOT-23-5, SOT-89-5, and SOIC-8 packages
2.3 WL2803G
需要低 dropout voltage 的场合,替换 AMS1117
- Feature
- 1000mA CMOS LDO
- Dropout voltage : 260mV @ Iout = 800mA load current
- The quiescent current is typically 150uA
- Vin MAX = 6.5V
- SOT-223-3L package
- Output 3.3V is marking 2803G**/YYWW [ ** - Voltage code (33: 3.3V), YY - Year code, WW - Week code ]
2.4 AMS1117-3.3
- Feature
- 1000mA LDO
- Dropout voltage : 1.1V @ Iout = 800mA load current
- The quiescent current is typically 5mA
- Vin MAX = 15V
- SOT-223-3L package
2.5 TPS63001
- Input Voltage Range: 1.8 V to 5.5 V
- Fixed and Adjustable Output Voltage Options from 1.2 V to 5.5 V
- Up to 96% Efficiency
- 1200-mA Output Current at 3.3 V in Step-Down Mode (VIN = 3.6 V to 5.5 V)
- Up to 800-mA Output Current at 3.3 V in Boost Mode (VIN > 2.4 V)
- Automatic Transition Between Step-Down and Boost Mode
- Device Quiescent Current less than 50 μA
- Power-Save Mode for Improved Efficiency at Low Output Power
- Load Disconnect During Shutdown
- Overtemperature Protection
- Small 3mm × 3mm 10-Pin VSON Package (QFN)
2.6 BQ27441
ESP8266/ESP8285 chip、MY9291/MY9231 chip、SPI Flash chip are all 3.3V power.
2.7 MP1470
- Wide 4.7V to 16V Operating Input Range
- Fixed 500kHz Switching Frequency
- Over-Current Protection and Hiccup
- Thermal Shutdown
- Output Adjustable from 0.8V
- Available in a 6-pin TSOT-23 package
2.8 MP2359
- Wide 4.5V to 24V Operating Input Range
- 1.2A Peak Output Current
- 0.35Ω Internal Power MOSFET Switch
- Stable with Low ESR Output Ceramic Capacitors
- Up to 92% Efficiency
- 0.1μA Shutdown Mode
- Fixed 1.4MHz Frequency
- Thermal Shutdown
- Cycle-by-Cycle Over Current Protection
- Output Adjustable from 0.81V to 15V
2.9 MP2307
宽电压输入、至少 90% 转换效率
典型应用电路:
R1 的大小,控制输出电压的值