LT8415
PRODUCTIONUltralow Power Boost Converter with Dual Half-Bridge Switches
- Part Models
- 4
- 1ku List Price
- Starting From $3.66
Overview
- High Voltage Switches Built in (Dual half-bridge)
- Ultralow Quiescent Current
- 10.5μA in Active Mode
- 0μA in Shutdown Mode
- Comparator Built into SHDN pin
- Low Noise Control Scheme
- Adjustable FB reference voltage
- Wide Input Range: 2.5V to 16V
- Wide Output Range: Up to 40V
- Integrated Power NPN Switch (25mA Current Limit)
- Integrated Schottky Diode
- Integrated Output Disconnect
- High Value (12.4M/0.4M) Feedback Resistor Integrated
- Built in Soft Start (Optional Capacitor from VREF to GND)
- Over Voltage Protection for CAP, VOUT, OUT1 and OUT2 Pins
- 12-Pin 3mm × 2mm DFN package
The LT8415 is an ultralow power boost converter with two integrated complementary MOSFET half-bridges (N- and P-channel), integrated power switch, Schottky diode and output disconnect circuitry. The N-channel and P-channel MOSFETs in each half-bridge are synchronously controlled by a single input pin, and never turn on at the same time in typical applications.
The boost regulator controls power delivery by varying both the peak inductor current and switch off-time. This control scheme results in low output voltage ripple as well as high efficiency over a wide load range. The quiescent current is a low 10.5μA, which is further reduced to 0μA in shutdown. The internal disconnect circuitry allows the output voltage to be blocked from the input during shutdown. High value (12.4M/0.4M) resistors are integrated on chip for output voltage detection, significantly reducing input referred quiescent current. The LT8415 also features a comparator built into the SHDN pin, overvoltage protection for the CAP, VOUT, OUT1 and OUT2 pins, built in soft start and comes in a tiny 12-pin 3mm × 2mm DFN package.
Applications
- Sensor Power
- RF Mems Relay Power
- Low Power Actuator Bias/Control
- Liquid Lens Driver
Documentation
Data Sheet 1
User Guide 1
Technical Articles 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT8415EDDB#TRMPBF | 12-Lead DFN (3mm x 2mm w/ EP) | ||
| LT8415EDDB#TRPBF | 12-Lead DFN (3mm x 2mm w/ EP) | ||
| LT8415IDDB#TRMPBF | 12-Lead DFN (3mm x 2mm w/ EP) | ||
| LT8415IDDB#TRPBF | 12-Lead DFN (3mm x 2mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice 1
Models for the following parts are available in LTspice:
- LT8415
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