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Overview
| Topology | High Voltage Output |
| Input voltage | 5.5-38 V |
| Output 1 | 3.3 V / 0.25 A |
| Output 2 | 5 V / 0.1 A |
| IC revision | A |
Description
he LTC®3256 is a wide input range switched capacitorstep-down DC/DC converter that produces two regulatedoutputs: a 5V output via direct connection to the chargepump output, and a 3.3V output via a low dropout (LDO)linear post-regulator. The device provides up to 350mAof total output current. At 12V VIN and maximum load onboth outputs, power dissipation is reduced by over 2Wcompared to a dual LDO regulator solution
Features
Input Voltage Range: 5.5V to 38VIndependently Enabled 5V and 3.3V Fixed Outputs5V Output: 100mA Max3.3V LDO Output: 250mA MaxMultimode Step-Down Charge Pump (2:1, 1:1) withAutomatic Mode SwitchingLow Quiescent Current20μA with Both Outputs Regulating (No Load)0.5μA in ShutdownEngineered for Diagnostic Coverage inISO26262 Systems1.1V Reference Output for System DiagnosticsPower-On Reset and Watchdog Controller withAdjustable TimingOvercurrent Fault Protection on Each OutputOvertemperature Protection150°C Max Operating Junction TemperatureThermally Enhanced 16-Lead MSOP Package
Typical applications
- Automotive ECU/CAN Transceiver Supplies
- Industrial/Telecom Housekeeping Supplies
- Low Power 12V to 5V and 3.3V Conversion
More information
Products
| Order Code | Datasheet | Downloads | Status | Product series | Pins (Value) (pcs) | Rows | Gender | Type | IR (A) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 60800213421 | SPEC | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.00 mm Jumper with Test Point | 2 | – | Jumper | – | 3 | Bag | |
 | 62000311121 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.00 mm THT Pin Header | 3 | Single | Pin Header | Straight | 2 | Bag | |
 | 62000411121 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.00 mm THT Pin Header | 4 | Single | Pin Header | Straight | 2 | Bag |
| Order Code | Datasheet | |
|---|---|---|
| 60800213421 | SPEC |
| 62000311121 | SPEC |
| 62000411121 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Downloads | Status | Product series | Pins (Value) (pcs) | Rows | Gender | Type | IR (A) | Packaging | Samples |
|---|