- Analog Devices, Inc.
- ICT and Industrial
The LT®83401/LT®83402 synchronous step-down regulators combine high efficiency and excellent wideband noise performance through a unique design that combines an ultralow noise reference with Silent Switcher architecture.
An innovative ultra-low noise architecture enables SWITCHES regulator to achieve very low frequency (0.1Hz to 100kHz) output noise performance. The output voltage can be set with a single resistor, resulting in nearly constant output noise regardless of output voltage.
The Silent Switcher architecture enables high efficiency at high SWITCHES frequencies while minimizing electromagnetic interference (EMI) emissions.
The LT83401/LT83402 are well suited for noise-sensitive, high current applications that benefit from the high conversion efficiency of a synchronous SWITCHES regulator.
Features
-
Silent SWITCHES 3 Architecture
Ultra-low RMS noise (10Hz to 100kHz): 2.8μVRMS
Ultra-low spot noise: 4nV/√Hz (at 10kHz)
Ultra-low EMI emissions -
Ultra-fast transient response
Minimize output capacitance -
High efficiency at high frequencies
Up to 92.4% efficiency at 2MHz, 12VIN to 5VOUT -
Input voltage range: 2.8V to 42V
-
Output voltage range: 0V to (VIN - 1V)
Unity gain configuration up to 15VOUT -
Fast minimum SWITCHES-on time: 22 ns
-
Precision Reference: ±0.8% over temperature with remote sense
-
Forced continuous mode function
-
Adjustable and Synchronizable: 300kHz to 6MHz
-
Configurable Power Good
-
Small 15-lead 3 mm x 2 mm LFCSP package
-
Pin-compatible family: LT83201 (18V, 1A), LT83203 (18V, 3A), LT83205 (18V, 5A)
-
AEC-Q100 qualification pending
application
- Automotive and Industrial POWER SUPPLIES Supplies
- Medical Applications: Imaging and Diagnostics
- High-speed, high-precision data converter
- Bipolar Ultra Low Noise POWER SUPPLIES
- Low noise instrumentation and DISPLAY
Order information
| Model 1 | Temperature Range | PACKAGE TYPE |
|---|---|---|
| LT83401RUDB#PBF | -40°C to +150°C | LFCSP (Lead Frame Chip Scale Package) |
| LT83402RUDB#PBF | -40°C to +150°C | LFCSP (Lead Frame Chip Scale Package) |
| LT83401RUDB#WPBF | -40°C to +150°C | LFCSP (Lead Frame Chip Scale Package) |
| LT83402RUDB#WPBF | -40°C to +150°C | LFCSP (Lead Frame Chip Scale Package) |
1 W = AUTOMOTIVE PRODUCTS
Evaluation boards, simulation models
-
Evaluation board
EVAL-LT83401-AZ/EVAL-LT83402-AZ -
LTpowerCAD
LT83401
LT83402
Detail Link
LT83401LT83402
Silent Switcher 3 Technology
Inquiry
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