TC1240ECHTR Microchip Charge Pump (SOT-23-6) In Stock
TC1240ECHTR is a switched-capacitor charge pump voltage doubler from Microchip that delivers up to 50 mA output current at a 125 kHz switching frequency, accepting 2.5 V to 5.5 V input and providing a doubled output up to 9 V, packaged in a compact 6-pin SOT-23 for space-constrained portable applications.
- Manufacturer
- Microchip
- Package
- SOT-23-6
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- TC1240ECHTR Datasheet PDF
- Category
- Charge Pump
- Price
- From $0.6930(MOQ 100)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TC1240ECHTR?
- Voltage doubler topology delivering 2× input voltage with no magnetic components
- 50 mA maximum output current for LCD bias, EEPROM programming, and LED drive
- 125 kHz fixed-frequency switching minimizes external capacitor size to 0.1 µF
- Input voltage range of 2.5 V to 5.5 V covering single-cell lithium and regulated rails
- Maximum output voltage clamp up to 9 V for protection against overvoltage
- 6-pin SOT-23 package occupying less than 10 mm² of board area
- Low quiescent current for battery-powered portable equipment
What is TC1240ECHTR used for?
The TC1240ECHTR is widely used in portable consumer electronics, handheld instruments, and IoT devices that need a higher programming or bias voltage derived from a single lithium cell or 3.3 V regulator without the size and EMI of an inductor-based boost converter. It is also applied in LCD contrast-bias generators, EEPROM high-voltage programming rails, and RS-232 transceiver charge pumps where 50 mA at twice the input voltage is sufficient. The tiny SOT-23-6 footprint makes it a natural fit for wearable electronics and space-constrained sensor modules.
What are the specifications of TC1240ECHTR?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-6 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Analog IC - Other Type | SWITCHED CAPACITOR CONVERTER |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.5V |
| Input Voltage-Nom | 2.8V |
| JESD-30 Code | R-PDSO-G6 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 0.3mA |
| Surface Mount | YES |
| Switcher Configuration | DOUBLER |
| Switching Frequency-Max | 125kHz |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| ## TC1240ECHTR Alternates Showing results | Image |
| Package | SOT-23-6 |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the TC1240ECHTR datasheet?
TC1240ECHTR Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for TC1240ECHTR?
Compatible alternatives and drop-in replacements for TC1240ECHTR:
suggested
suggested
suggested
Frequently Asked Questions
Can TC1240ECHTR supply the EEPROM programming voltage directly from a 3.3 V microcontroller rail?
Yes. With a 3.3 V input, TC1240ECHTR delivers approximately 6.6 V at up to 50 mA, which covers the 5 V to 6.5 V VPP programming voltage required by many serial EEPROM devices without a separate boost converter or charge-pump IC.
What external capacitor values does TC1240ECHTR require for its 125 kHz charge-pump operation?
The device operates with flying and output capacitors as small as 0.1 µF to 1 µF in ceramic X5R or X7R dielectric, making the total BOM only 3 passive components on a PCB footprint under 15 mm² for the complete power-conversion circuit.
How does TC1240ECHTR compare to inductor-based boost converters for noise-sensitive LCD bias applications?
As a switched-capacitor doubler, TC1240ECHTR generates no magnetic field and no inductor-related EMI, making it preferable to boost converters in LCD bias or audio applications where magnetic interference or switching noise floor affects display contrast uniformity or audio SNR.
What RoHS and lead-free compliance status does TC1240ECHTR carry for EU market shipments?
TC1240ECHTR carries the Pb-free code 'Yes' and JESD-609 code e3, confirming it is manufactured with lead-free solder and compliant with RoHS Directive 2011/65/EU restrictions on hazardous substances for electronic equipment sold in the European Union.
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| 100+ | $0.9830 | $98.30 |
| 400+ | $0.7875 | $315.00 |
| 1000+ | $0.6930 | $693.00 |
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