voltage regulators - switching regulators 5V/3.3V/3V or adj low-IQ step-down
| Parameter Name | Attribute value |
| Is it lead-free? | Lead free |
| Is it Rohs certified? | conform to |
| Maker | Maxim |
| Parts packaging code | SOIC |
| package instruction | SOP, SOP8,.25 |
| Contacts | 8 |
| Reach Compliance Code | compli |
| ECCN code | EAR99 |
| Factory Lead Time | 6 weeks |
| Analog Integrated Circuits - Other Types | SWITCHING REGULATOR |
| control mode | CURRENT-MODE |
| Control Technology | PULSE FREQUENCY MODULATION |
| Maximum input voltage | 11.5 V |
| Minimum input voltage | 4 V |
| JESD-30 code | R-PDSO-G8 |
| JESD-609 code | e3 |
| length | 4.9 mm |
| Humidity sensitivity level | 1 |
| Number of functions | 1 |
| Number of terminals | 8 |
| Maximum operating temperature | 70 °C |
| Minimum operating temperature | |
| Maximum output current | 1 A |
| Nominal output voltage | 3 V |
| Package body material | PLASTIC/EPOXY |
| encapsulated code | SOP |
| Encapsulate equivalent code | SOP8,.25 |
| Package shape | RECTANGULAR |
| Package form | SMALL OUTLINE |
| Peak Reflow Temperature (Celsius) | 260 |
| Certification status | Not Qualified |
| Maximum seat height | 1.75 mm |
| Maximum supply current (Isup) | 0.02 mA |
| surface mount | YES |
| Switch configuration | BUCK |
| technology | CMOS |
| Temperature level | COMMERCIAL |
| Terminal surface | Matte Tin (Sn) |
| Terminal form | GULL WING |
| Terminal pitch | 1.27 mm |
| Terminal location | DUAL |
| Maximum time at peak reflow temperature | NOT SPECIFIED |
| width | 3.9 mm |
| MAX653CSA+ | US1D | MAX653ESA+ | MAX639CSA+ | MAX639EPA+ | MAX639ESA+ | MAX640CPA+ | MAX653CSA+T | MAX640ESA+T | MAX640EPA+ | |
|---|---|---|---|---|---|---|---|---|---|---|
| Description | voltage regulators - switching regulators 5V/3.3V/3V or adj low-IQ step-down | 1 Amp Ultra Fast Rectifier 50 to 1000 Volts | voltage regulators - switching regulators 5V/3.3V/3V or adj low-IQ step-down | voltage regulators - switching regulators 5/3.3/3V adjustable step-down | voltage regulators - switching regulators 5/3.3/3V adjustable step-down | voltage regulators - switching regulators 5/3.3/3V adjustable step-down | voltage regulators - switching regulators 5V/3.3V/3V adj low-IQ step-down | voltage regulators - switching regulators 5V/3.3V/3V or adj low-IQ step-down | voltage regulators - switching regulators 5V/3.3V/3V adj low-IQ step-down | voltage regulators - switching regulators 5V/3.3V/3V adj low-IQ step-down |
| Is it lead-free? | Lead free | - | Lead free | Lead free | Lead free | Lead free | - | Lead free | Lead free | Lead free |
| Is it Rohs certified? | conform to | - | conform to | conform to | conform to | conform to | conform to | conform to | conform to | conform to |
| Maker | Maxim | - | Maxim | Maxim | Maxim | Maxim | Maxim | Maxim | Maxim | Maxim |
| Parts packaging code | SOIC | - | SOIC | SOIC | DIP | SOIC | - | SOIC | SOIC | DIP |
| package instruction | SOP, SOP8,.25 | - | SOP, SOP8,.25 | SOP, SOP8,.25 | DIP, | SOP, SOP8,.25 | DIP, | SOP, SOP8,.25 | 0.150 INCH, SOIC-8 | DIP, |
| Contacts | 8 | - | 8 | 8 | 8 | 8 | - | 8 | 8 | 8 |
| Reach Compliance Code | compli | - | compli | compli | compli | compli | compli | compli | compli | compli |
| ECCN code | EAR99 | - | EAR99 | EAR99 | EAR99 | EAR99 | EAR99 | EAR99 | EAR99 | EAR99 |
| Factory Lead Time | 6 weeks | - | 6 weeks | 6 weeks | 6 weeks | 6 weeks | - | 6 weeks | 6 weeks | - |
| Analog Integrated Circuits - Other Types | SWITCHING REGULATOR | - | SWITCHING REGULATOR | SWITCHING REGULATOR | SWITCHING REGULATOR | SWITCHING REGULATOR | SWITCHING REGULATOR | SWITCHING REGULATOR | SWITCHING REGULATOR | SWITCHING REGULATOR |
| control mode | CURRENT-MODE | - | CURRENT-MODE | CURRENT-MODE | CURRENT-MODE | CURRENT-MODE | - | CURRENT-MODE | CURRENT-MODE | CURRENT-MODE |
| Control Technology | PULSE FREQUENCY MODULATION | - | PULSE FREQUENCY MODULATION | PULSE FREQUENCY MODULATION | PULSE FREQUENCY MODULATION | PULSE FREQUENCY MODULATION | PULSE FREQUENCY MODULATION | PULSE FREQUENCY MODULATION | PULSE FREQUENCY MODULATION | PULSE FREQUENCY MODULATION |
| Maximum input voltage | 11.5 V | - | 11.5 V | 11.5 V | 11.5 V | 11.5 V | 11.5 V | 11.5 V | 11.5 V | 11.5 V |
| Minimum input voltage | 4 V | - | 4 V | 6 V | 4 V | 6 V | 4 V | 4 V | 4 V | 4 V |
| JESD-30 code | R-PDSO-G8 | - | R-PDSO-G8 | R-PDSO-G8 | R-PDIP-T8 | R-PDSO-G8 | R-PDIP-T8 | R-PDSO-G8 | R-PDSO-G8 | R-PDIP-T8 |
| JESD-609 code | e3 | - | e3 | e3 | e3 | e3 | - | e3 | e3 | e3 |
| length | 4.9 mm | - | 4.9 mm | 4.9 mm | 9.375 mm | 4.9 mm | - | 4.9 mm | 4.9 mm | 9.375 mm |
| Humidity sensitivity level | 1 | - | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Number of functions | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Number of terminals | 8 | - | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Maximum operating temperature | 70 °C | - | 85 °C | 70 °C | 85 °C | 85 °C | 70 °C | 70 °C | 85 °C | 85 °C |
| Maximum output current | 1 A | - | 1 A | 1 A | 1 A | 1 A | 1 A | 1 A | 1 A | 1 A |
| Nominal output voltage | 3 V | - | 3 V | 5 V | 5 V | 5 V | 3.3 V | 3 V | 3.3 V | 3.3 V |
| Package body material | PLASTIC/EPOXY | - | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| encapsulated code | SOP | - | SOP | SOP | DIP | SOP | DIP | SOP | SOP | DIP |
| Encapsulate equivalent code | SOP8,.25 | - | SOP8,.25 | SOP8,.25 | - | SOP8,.25 | - | SOP8,.25 | SOP8,.25 | - |
| Package shape | RECTANGULAR | - | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package form | SMALL OUTLINE | - | SMALL OUTLINE | SMALL OUTLINE | IN-LINE | SMALL OUTLINE | IN-LINE | SMALL OUTLINE | SMALL OUTLINE | IN-LINE |
| Peak Reflow Temperature (Celsius) | 260 | - | 260 | 260 | 260 | 260 | NOT SPECIFIED | 260 | 260 | 260 |
| Certification status | Not Qualified | - | Not Qualified | Not Qualified | Not Qualified | Not Qualified | - | Not Qualified | Not Qualified | Not Qualified |
| Maximum seat height | 1.75 mm | - | 1.75 mm | 1.75 mm | 4.572 mm | 1.75 mm | - | 1.75 mm | 1.75 mm | 4.572 mm |
| Maximum supply current (Isup) | 0.02 mA | - | 0.02 mA | 0.02 mA | 0.02 mA | 0.02 mA | - | 0.02 mA | 0.02 mA | 0.02 mA |
| surface mount | YES | - | YES | YES | NO | YES | NO | YES | YES | NO |
| Switch configuration | BUCK | - | BUCK | BUCK | BUCK | BUCK | BUCK | BUCK | BUCK | BUCK |
| technology | CMOS | - | CMOS | CMOS | CMOS | CMOS | - | CMOS | CMOS | CMOS |
| Temperature level | COMMERCIAL | - | INDUSTRIAL | COMMERCIAL | INDUSTRIAL | INDUSTRIAL | COMMERCIAL | COMMERCIAL | INDUSTRIAL | INDUSTRIAL |
| Terminal surface | Matte Tin (Sn) | - | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | - | Matte Tin (Sn) | Matte Tin (Sn) | MATTE TIN |
| Terminal form | GULL WING | - | GULL WING | GULL WING | THROUGH-HOLE | GULL WING | THROUGH-HOLE | GULL WING | GULL WING | THROUGH-HOLE |
| Terminal pitch | 1.27 mm | - | 1.27 mm | 1.27 mm | 2.54 mm | 1.27 mm | - | 1.27 mm | 1.27 mm | 2.54 mm |
| Terminal location | DUAL | - | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL |
| Maximum time at peak reflow temperature | NOT SPECIFIED | - | NOT SPECIFIED | NOT SPECIFIED | NOT SPECIFIED | NOT SPECIFIED | NOT SPECIFIED | NOT SPECIFIED | NOT SPECIFIED | NOT SPECIFIED |
| width | 3.9 mm | - | 3.9 mm | 3.9 mm | 7.62 mm | 3.9 mm | - | 3.9 mm | 3.9 mm | 7.62 mm |
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