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Overview
| Topology | Positive to Negative Converter |
| Input voltage | 4.5-42 V |
| Switching frequency | 273-2150 kHz |
| Output 1 | -12 V |
Description
Released On LT Journal April 2018The LT®8362 is a current mode DC/DC converter with a60V, 2A switch operating from a 2.8V to 60V input. Witha unique single feedback pin architecture it is capable ofboost, SEPIC or inverting configurations. Burst Modeoperation consumes as low as 9μA quiescent current tomaintain high efficiency at very low output currents, whilekeeping typical output ripple below 15mV.An external compensation pin allows optimization of loopbandwidth over a wide range of input and output voltagesand programmable switching frequencies between 300kHzand 2MHz. A SYNC/MODE pin allows synchronization toan external clock. It can also be used to select betweenburst or pulse-skip modes of operation with or withoutSpread Spectrum Frequency Modulation for low EMI.For increased efficiency, a BIAS pin can accept a secondinput to supply the INTVCC regulator. Additional featuresinclude frequency foldback and programmable soft-startto control inductor current during startup.The LT8362 is available in a thermally enhanced 10-lead3mm × 3mm DFN package or a thermally enhanced 16-leadMSOP package with four pins removed.
Features
- Wide Input Voltage Range: 2.8V to 60V
- Ultralow Quiescent Current and Low Ripple Burst Mode® Operation: IQ = 9μA
- 2A, 60V Power Switch
- Positive or Negative Output Voltage Programming with a Single Feedback Pin
- Programmable Frequency (300kHz to 2MHz)
- Synchronizable to an External Clock
- Spread Spectrum Frequency Modulation for Low EMI
- BIAS Pin for Higher Efficiency
- Programmable Undervoltage Lockout (UVLO)
- Thermally Enhanced 10-lead 3mm × 3mm DFN and16-lead MSOP packages
Typical applications
- Medical Diagnostic Equipment
- Telecom
- Portable Electronics
- Industrial and Automotive
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(Ω) | Type | L1(µH) | L2(µH) | n | IR(mA) | IR(mA) | ISAT(A) | ISAT1(A) | ISAT2(A) | RDC1 typ(mΩ) | RDC2 typ(mΩ) | RDC1 max(mΩ) | RDC2 max(mΩ) | fres 1(MHz) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-CBF SMT EMI Suppression Ferrite Bead, 600 Ω, 700 Ω | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | Impedance @ 100 MHz600 Ω | Maximum Impedance700 Ω | Maximum Impedance150 MHz | Rated Current 22000 mA | DC Resistance0.15 Ω | TypeHigh Current | Inductance 152000000 µH | – | – | Rated Current2000 mA | Rated Current1500 mA | – | – | – | – | – | – | – | – | ||||
 | WE-TDC SMT Shielded Coupled Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TDC SMT Shielded Coupled Inductor | – | – | – | Rated Current 21250 mA | DC Resistance0.146 Ω | – | Inductance 16.8 µH | Inductance 26.8 µH | Turns Ratio1:1 | – | Rated Current1250 mA | Saturation Current2 A | Saturation Current 12 A | Saturation Current 22 A | DC Resistance 1128 mΩ | DC Resistance 2128 mΩ | DC Resistance 1146 mΩ | DC Resistance 2146 mΩ | Self Resonant Frequency [1]46 MHz |