LT1738IG#TRPBF vs ICE2QR4765XKLA1
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| Category | PMIC - AC DC Converters, Offline Switchers | PMIC - AC DC Converters, Offline Switchers |
| Manufacturer | Analog Devices Inc. | Infineon Technologies |
| Description | IC OFFLINE SW MULT TOP 20SSOP | IC OFFLINE SWITCH FLYBACK 8DIP |
| Package | Tube | Tube |
| Series | - | CoolMOS™, CoolSET™-Q1 |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount | Through Hole |
| Package / Case | 20-SSOP (0.209\", 5.30mm Width) | 8-DIP (0.300\", 7.62mm) |
| Supplier Device Package | 20-SSOP | PG-DIP-8 |
| Topology | Boost, Cuk, Flyback | Flyback |
| Voltage - Supply (Vcc/Vdd) | 2.55V ~ 20V | 10.5V ~ 27V |
| Frequency - Switching | 20kHz ~ 250kHz | 52kHz |
| Control Features | EN, Frequency Control, Soft Start, Sync | - |
| Power (Watts) | - | 30 W |
| Voltage - Breakdown | - | 650V |
| Internal Switch(s) | No | Yes |
| Output Isolation | Isolated | Isolated |
| Voltage - Start Up | - | 18 V |
| Duty Cycle | 93.5% | 50% |
| Fault Protection | - | Current Limiting, Over Load, Over Temperature, Over Voltage |
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1. What are some common applications of PMIC AC/DC converters?
PMIC AC/DC converters are widely used in scenarios that require AC power to DC, such as chargers, adapters, LED driver power supplies, industrial control equipment, smart home devices, and battery management systems.
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2. How efficient is an AC/DC converter?
The efficiency of AC/DC converters is usually between 70%-95%, depending on the design, topology and load conditions of the converter. Switching power supply topologies are generally more efficient.
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3. What factors should be considered when selecting an AC/DC converter?
Factors such as input voltage range, output voltage and current requirements, power efficiency, packaging, temperature range, reliability and safety certification need to be considered when selecting.
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4. How important is power factor correction (PFC) for AC/DC converters?
Power factor correction (PFC) is very important for meeting energy regulations and improving power efficiency, especially in high-power applications. PFC circuits can reduce the harmonic interference of equipment to the power grid.
