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LM3478QMM
- Manufacturer
- Mfr. Part #LM3478QMM
- Package
- Datasheet
- In Stock25232
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Specifications
| EU RoHS | Not Compliant |
| ECCN (US) | EAR99 |
| Part Status | Unconfirmed |
| HTS | 8542.39.00.60 |
| Automotive | Yes |
| PPAP | Yes |
| Minimum Operating Temperature (°C) | -40 |
| Maximum Operating Temperature (°C) | 125 |
| Mounting | Surface Mount |
| Package Height | 0.95(Max) |
| Package Width | 3.1(Max) |
| Package Length | 3.1(Max) |
| PCB changed | 8 |
| Standard Package Name | SO |
| Supplier Package | VSSOP |
| Pin Count | 8 |
| Lead Shape | Gull-wing |
| Packaging | Tape and Reel |
| Number of Outputs | 1 |
| Topology | Step Up |
| Output Voltage (V) | 1.26 to 500 |
| Maximum Output Current (A) | 1 |
| Maximum Switching Frequency (kHz) | 1000 |
| Minimum Input Voltage (V) | 2.97 |
| Maximum Input Voltage (V) | 40 |
| Operating Supply Voltage (V) | 2.97 to 40 |
| Maximum Supply Current (mA) | 2.7(Typ) |
| Minimum Switching Frequency (kHz) | 100 |
| Supplier Temperature Grade | Automotive |
Overview
Description
Key features of the LM3478QMM include a high switching frequency up to 1.2 MHz, which allows for smaller external components and improved efficiency. It also incorporates current mode control, enhancing stability and transient response. The device supports both fixed and adjustable output configurations, making it adaptable to specific design needs.
With its robust thermal performance and built-in protection features like over-temperature and over-current protection, the LM3478QMM is an excellent choice for designers looking to implement efficient power management solutions in compact electronic systems.
Features
1. Wide Input Voltage Range: Operates from 3V to 40V, making it suitable for various power sources.
2. Adjustable Output Voltage: The output voltage can be set from 1.25V to 40V, providing flexibility for different applications.
3. High Efficiency: Typically achieves up to 95% efficiency, reducing energy loss and heat generation.
4. Switching Frequency: Offers a fixed switching frequency of 1.2MHz for improved performance and reduced component size.
5. Current Limiting: Built-in current limit protection helps safeguard against overload conditions.
6. Soft Start: Integrated soft-start feature minimizes inrush current during startup.
7. Thermal Shutdown: Protects the device from overheating with an automatic shutdown feature.
8. Compact Package: Available in a surface-mount QFN package, suitable for space-constrained designs.
These features make the LM3478QMM ideal for applications in battery-powered devices, LED drivers, and industrial power supplies.
Package
Pinout
1. VIN - Input voltage.
2. SW - Switch node for connecting to the inductor.
3. GND - Ground reference.
4. VOUT - Output voltage.
5. COMP - Compensation node for stability.
6. FB - Feedback voltage for regulation.
7. CSN/ CSP - Current sense pins for overcurrent protection.
8. RAMP - Ramp voltage input for slope compensation.
9. ISENSE - Input for current sensing.
10. EN - Enable pin to activate the converter.
11. SS - Soft-start pin to control the startup time.
12. FREQ - Frequency setting pin for switching frequency adjustment.
13. GATE - Gate driver output for the external switch.
14. N/C - Not connected pins (can be left floating).
15. PGND - Power ground for high current paths.
16. AGND - Analog ground for sensitive circuitry.
The LM3478QMM is designed for applications requiring efficient power conversion, such as LED drivers and battery-operated devices.
Manufacturer
Application
Equivalent
1. TPS61023 (Texas Instruments)
2. LT1302 (Analog Devices)
3. MAX860 (Maxim Integrated)
4. MIC2544 (Microchip)
5. NCP1402 (ON Semiconductor)
These alternatives also provide similar functionality in boosting voltage applications. Always check specific requirements like input/output voltage, current ratings, and efficiency before substitution.
Shipping
Shipping MethodsWe
offer global shipping services through DHL, FedEx, TNT, UPS, or any other forwarder of your choice.
Shipping Fee Reference (DHL/FedEx):
DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.
FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.
UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.
TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.
EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.
Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.
Payments
Payment Methods
The Payment term is 100% Prepaid.
Currently, we only accept the below payment methods:
1. PayPal
2. Credit/ Debit Card
3. Wire Transfer
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