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LTC3704EMS
+BOMSwitching Voltage Regulators LTC3704 - Wide Input Range, No RSENSE Positive-to-Negative DC/DC Controller
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Nhà sản xuấtAnalog Devices
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Ông. Phần #LTC3704EMS
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Bảng dữ liệu LTC3704EMS DataSheet
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Có sẵn20283
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Description
This controller operates in a current-mode architecture, which ensures fast transient response and good loop stability. It can drive an N-channel MOSFET, allowing for flexibility in power design. The device also features programmable frequency operation, allowing users to optimize the balance between efficiency and component size.
With its low shutdown current of 10µA, it is suitable for battery-operated devices. Additional features include programmable soft-start for controlled startup, and overvoltage and overcurrent protection to safeguard the circuit. The LTC3704EMS is available in a thermally enhanced MSOP package, which aids in heat dissipation and compactness.
Equivalent
Features
1. Wide Input Voltage Range: It operates from 2.5V to 36V, making it suitable for a variety of power sources, including batteries and industrial supplies.
2. High-Efficiency Operation: The device uses a current-mode architecture to deliver high efficiency and fast transient response.
3. Low Quiescent Current: It features a low quiescent current of 40µA, which helps in improving efficiency, especially in low-power applications.
4. Adjustable Switching Frequency: The LTC3704EMS allows for frequency adjustment from 100kHz to 1MHz, enabling optimization of efficiency and component size.
5. Soft-Start Capability: This feature reduces inrush current during startup, contributing to system reliability and longevity.
6. Power Good Output: The chip includes a power-good indicator for monitoring system status.
7. Overcurrent Protection: It provides robust protection against overcurrent conditions to prevent damage to the converter and connected loads.
These features make the LTC3704EMS suitable for a wide range of applications, including battery-powered devices, automotive, and industrial systems.
Pinout
1. VIN (Pin 1): This pin is the input supply voltage for the internal circuitry.
2. SW (Pin 2): The switch pin that drives the gate of the external N-channel MOSFET.
3. SENSE– (Pin 3) and SENSE+ (Pin 4): These pins are used for current sensing across an external sense resistor.
4. GND (Pin 5): Ground pin for the device.
5. TG (Pin 6): This is the top gate drive pin that connects to the gate of the high-side MOSFET.
6. BG (Pin 7): Bottom gate drive pin for the low-side MOSFET.
7. VFB (Pin 8): Feedback voltage pin for regulating output voltage.
8. SHDN/RT (Pin 9): Shutdown and frequency select pin.
9. SS (Pin 10): The soft-start pin to control startup inrush current.
These functions collectively support the controller’s operation, enabling efficient step-up voltage conversion.