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Overview
| Topology | Boost Converter |
| Input voltage | 8-20 V |
| Switching frequency | 300-3000 kHz |
| Output 1 | 24 V / 1.5 A |
Description
The LT8336 is a low IQ, synchronous step-up DC/DC converter. It features Silent Switcher architecture and optional spread spectrum frequency modulation to minimize EMI emissions while delivering high efficiencies at high switching frequencies.The wide input/output voltage range, low VIN pin quiescent current in Burst Mode operation, and 100% duty cycle capability for the synchronous MOSFET in passthrough operation (VIN ≥ VOUT), make the LT8336 ideally suited for general purpose step-up and automotive preboost applications.The LT8336 integrates 40V, 2.5A power switches, operating at a fixed switching frequency programmable between 300kHz and 3MHz and synchronizable to an external clock. Pulse-skipping or Burst Mode operation can be selected, with or without spread-spectrum frequency modulation, to optimize efficiency and EMI performance.The LT8336 features output soft-start, an output power good flag and output overvoltage lockout.
Features
- Silent Switcher® Architecture
- Ultralow EMI Emissions
- Optional Spread Spectrum Frequency Modulation
- Integrated 40V, 2.5A Power Switches
- Wide Input/Output Voltage Range: 2.7V to 40V
- Low VIN Pin Quiescent Current:
- 0.3µA in Shutdown
- 4µA in Burst Mode® Operation
- 15µA in Pass Through (VIN > VOUT)
- 100% Duty Cycle Capability for Synchronous MOSFET
- Adjustable and Synchronizable: 300kHz to 3MHz
- Pulse-Skipping or Burst Mode Operation at Light Load
- Output Soft-Start and Power Good Monitor
- Internal Compensation
- Accurate 1V Enable Pin Threshold
- Small 16-Lead (3mm × 3mm) LQFN Package
- AEC-Q100 Qualification in Progress
Typical applications
- Automotive and Industrial Power Supplies / General Purpose Step-Up
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | f(mm) | L(µH) | ISAT1(A) | ISAT2(A) | fres(MHz) | IRP,40K(A) | ISAT,30%(A) | RDC typ.(mΩ) | VOP(V) | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(Ω) | Type | Pins | Mount | L(mm) | H(µm) | IR(mA) | Working Voltage(V (AC)) | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-CBF SMT EMI Suppression Ferrite Bead, –, – | 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 | – | MountSMT | Length2 mm | Height0.9 µm | Rated Current1500 mA | – | Operating Temperature -55 °C up to +125 °C | ||||
 | WR-PHD Pin Header, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | – | – | – | – | – | – | – | – | – | – | – | – | – | TypeStraight | Pins10 | MountTHT | Length10 mm | – | Rated Current2000 mA | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C | |||
 | WA-SNSR Self-Retaining Spacer, 4.8 mm, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SNSR Self-Retaining Spacer | Drilling in Panel4.8 mm | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Length11.1 mm | – | – | – | Operating Temperature -30 °C up to +85 °C | |||
 | WE-PMCI Power Molded Chip Inductor, –, 0.47 µH | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PMCI Power Molded Chip Inductor | – | Inductance0.47 µH | Saturation Current 15.15 A | Saturation Current 29.95 A | Self Resonant Frequency90 MHz | Performance Rated Current7.1 A | Saturation Current @ 30%9.95 A | DC Resistance18 mΩ | – | – | – | – | Rated Current 23600 mA | DC Resistance0.022 Ω | – | Pins2 | MountSMT | Length3.2 mm | Height1200 µm | Rated Current7100 mA | – | Operating Temperature -40 °C up to +125 °C | ||||
 | WR-PHD Jumper, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Pins2 | – | – | – | Rated Current3000 mA | Working Voltage200 V (AC) | Operating Temperature -25 °C up to +105 °C | |||
 | WE-MAPI SMT Power Inductor, –, 6.8 µH | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAPI SMT Power Inductor | – | Inductance6.8 µH | – | – | Self Resonant Frequency19.5 MHz | Performance Rated Current3.75 A | Saturation Current @ 30%7.2 A | DC Resistance69.4 mΩ | Operating Voltage80 V | – | – | – | – | DC Resistance0.074 Ω | – | Pins2 | MountSMT | Length4.3 mm | Height3100 µm | Rated Current3000 mA | – | Operating Temperature -40 °C up to +125 °C |