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Overview
| Topology | SEPIC Buck-Boost Topology |
| Input voltage | 4-16 V |
| Switching frequency | 1800-2200 kHz |
| Output 1 | 5 V / 0.65 A |
| Output 2 | 5 V / 0.55 A |
| Output 3 | 5 V / 0.7 A |
| Output 4 | 5 V / 0.5 A |
| IC revision | A |
Description
The LT®8335 is a current mode DC/DC converter capableof generating either positive or negative output voltagesusing a single feedback pin. It can be configured as aboost, SEPIC or inverting converter consuming as low as6µA of quiescent current. Low ripple Burst Mode operationmaintains high efficiency down to very low outputcurrents while keeping the output ripple below 15mV ina typical application. The internally compensated currentmode architecture results in stable operation over a widerange of input and output voltages. Integrated soft-startand frequency foldback functions are included to controlinductor current during start-up. The 2MHz operationcombined with the small 8-lead DFN package, enableslow cost, area efficient solutions
Features
1) 3V-25V Input Voltage Range2)Ultrlow Quiescent Current and Low Ripple Burst Mode Operation:Iq=6uA3) 2A,28V Power Switch4) Positive or Negative Output Voltage Programming with a single feedback Pin5) Fixed 2MHz Switching Frequency6) Programmable Undervoltage Lockout (UVLO)Internal Compensation and Soft-Start7) Low Profile(0.75mm) 8-Lead(3mmx2mm) DFN Package
Typical applications
- Industrial and Automotive
- Medical Diagnostic Equipment
- Telecom
- Portable Electronics
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L1 (µH) | L2 (µH) | IR (A) | IR 2 (A) | ISAT (A) | RDC1 typ (Ω) | RDC2 typ (Ω) | RDC1 max (Ω) | RDC2 max (Ω) | fres (MHz) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 744877001 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-DD SMT Shielded Coupled Inductor | 1.8 | 1.8 | 4.7 | 4.7 | 6.5 | 0.025 | 0.025 | 0.034 | 0.034 | 58 | Straight |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L1 (µH) | L2 (µH) | IR (A) | IR 2 (A) | ISAT (A) | RDC1 typ (Ω) | RDC2 typ (Ω) | RDC1 max (Ω) | RDC2 max (Ω) | fres (MHz) | Type | Samples |
|---|