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Overview
| Topology | Boost Converter |
| Input voltage | 8-16 V |
| Switching frequency | 300-3000 kHz |
| Output 1 | 24 V / 1.2 A |
| Output 2 | 24 V / 0.6 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 | L(µH) | IR(A) | ISAT1(A) | ISAT2(A) | fres(MHz) | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(mΩ) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PMCI Power Molded Chip Inductor, 0.47 µH, 7.1 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PMCI Power Molded Chip Inductor | Inductance0.47 µH | Rated Current7.1 A | Saturation Current 15.15 A | Saturation Current 29.95 A | Self Resonant Frequency90 MHz | – | – | – | Rated Current 23600 mA | DC Resistance22 mΩ | – | ||||
 | WE-CBF SMT EMI Suppression Ferrite Bead, –, 1.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | Rated Current1.5 A | – | – | – | Impedance @ 100 MHz600 Ω | Maximum Impedance700 Ω | Maximum Impedance150 MHz | Rated Current 22000 mA | DC Resistance150 mΩ | TypeHigh Current |