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LM25574MTX
IC REG BUCK ADJ 500MA 16TSSOP
- Fabricant
- Mfr. Partie #LM25574MTX
- Paquet
- Fiche de données LM25574MTX DataSheet
- En stock9195
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Spécifications
| Series | SIMPLE SWITCHER® |
| Part Status | Obsolete |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 6V |
| Voltage - Input (Max) | 42V |
| Voltage - Output (Min/Fixed) | 1.225V |
| Voltage - Output (Max) | 40V |
| Current - Output | 500mA |
| Frequency - Switching | 50kHz ~ 1MHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 16-TSSOP |
| Base Product Number | LM25574 |
Vue d'ensemble
Description
The LM25574MTX integrates several protection features, including thermal shutdown, cycle-by-cycle current limiting, and under-voltage lockout, ensuring reliable operation under different conditions. Its adjustable switching frequency, typically ranging from 50 kHz to 1 MHz, provides flexibility in optimizing for efficiency or component size.
This device is suitable for use in distributed power systems, battery-powered equipment, industrial controls, and automotive applications. It is available in a thermally enhanced TSSOP package, making it ideal for space-constrained designs. Additionally, the LM25574MTX supports synchronous rectification, which further improves efficiency by reducing switching losses.
Overall, the LM25574MTX is a versatile and robust component for engineers looking to design efficient power management solutions in high-voltage applications.
Features
1. Adjustable Output: The output voltage is adjustable via an external resistor divider.
2. High Efficiency: It offers high efficiency across the load range due to its current-mode control architecture.
3. Integrated Features: It includes an internal high-side N-channel MOSFET and a thermal shutdown protection.
4. Low Shutdown Current: The regulator has a low shutdown current of approximately 10 µA, optimizing power savings.
5. Protection Mechanisms: Features overvoltage protection, thermal shutdown, and cycle-by-cycle current limit protection.
6. Frequency Synchronization: The switching frequency is adjustable and can be synchronized to an external clock.
7. Soft-Start Capability: It includes a programmable soft-start feature to reduce inrush currents.
8. Wide Temperature Range: The device operates over a temperature range of -40°C to 125°C, suitable for industrial applications.
These features make the LM25574MTX well-suited for applications requiring reliable power delivery over varying input conditions.
Package
Pinout
1. VIN: Input voltage supply pin.
2. SW: Switch pin; connected to the inductor.
3. BST: Bootstrap capacitor connection.
4. RT: Resistor timing pin to set the switching frequency.
5. SYNC: Synchronization input for external clock.
6. FB: Feedback pin for output voltage regulation.
7. COMP: Compensation network connection.
8. SS: Soft-start control pin.
9. UVLO: Undervoltage lockout setpoint.
10. EN: Enable pin; turns the regulator on/off.
11. VCC: Internal bias supply pin.
12. GND: Ground.
13. RAMP: Ramp control pin.
14. PGOOD: Power good indicator.
15. NC: No connection.
16. AGND: Analog ground.
This configuration allows the LM25574MTX to efficiently convert a higher input voltage into a lower output voltage, suitable for powering various electronic components and devices.
Manufacturer
Equivalent
1. LM2574 series from Texas Instruments
2. MC34063 from ON Semiconductor
3. L4973 from STMicroelectronics
4. MAX5035 from Maxim Integrated
5. LT1766 from Analog Devices
When choosing an equivalent, consider the specific requirements such as input/output voltage range, current rating, switching frequency, and package type to ensure compatibility with your application.
Expédition
Méthodes d'expéditionNous
offrir des services d'expédition mondiaux par DHL, FedEx, TNT, UPS ou tout autre expéditeur de votre choix.
Référence des frais d'expédition (DHL/FedEx):
DHL: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 2 à 5 jours ouvrables.
FedEx: Les frais d'expédition varient de 25 à 40 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.
UPS: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.
TNT: Les frais d'expédition varient de 25 à 65 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.
EMS: Les frais d'expédition varient de 30 à 50 $ (0,5 kg), avec un délai de livraison estimé de 7 à 15 jours ouvrables.
Courrier aérien enregistré: Le coût d'expédition est de 2 à 4 $ (0,1 kg), avec un délai de livraison estimé de 5 à 20 jours ouvrables.
Paiements
Payment Methods
Le terme de paiement est 100% prépayé.
Actuellement, nous n'acceptons que les méthodes de paiement ci-dessous:
1. PayPal
2. Carte de crédit/débit
3. Transfert bancaire
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