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Microchip Technology TC962COE
- Part No.:
- TC962COE
- Manufacturer:
- Microchip Technology
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
TC962COE.pdf
- Description:
- IC REG CHRG PUMP INV 80MA 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,583
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Product details
Overview
TC962COE from Microchip Technology is a high-current charge pump DC-to-DC inverter IC designed for bipolar voltage generation in space-constrained analog and mixed-signal systems. It delivers up to 80 mA output current, operates from 3V to 18V input, features 28 Ω typical output impedance, integrates a 6.4 V Zener reference on Pin 1, and supports oscillator frequency doubling via Pin 12 for reduced external capacitor size - used in laptop power rails and µP-based controllers.
For engineers reviewing the TC962COE datasheet, TC962COE pinout, TC962COE application, or TC962COE equivalent, this page provides verified functional role, SOIC-16 package mapping, Zener reference design integration, dual-frequency oscillator control, and validated alternatives for high-efficiency inverter designs requiring >20 mA output.
Technical Context
The TC962COE implements a four-switch CMOS charge pump topology with internal level-shifted gate drivers synchronized to a programmable oscillator. Its switched-capacitor architecture enables inverting operation without external diodes, while the integrated Zener (6.4 V at 5 mA, 12 Ω dynamic impedance) serves as a stable reference for external LDOs or feedback networks.
Oscillator frequency is set by internal timing capacitance and modifiable via two dedicated pins: Pin 14 (COSC) accepts an external capacitor to lower frequency, and Pin 12 (FREQ x 2) doubles the base 12 kHz oscillator to 24 kHz when grounded - directly reducing required CP/CR capacitor values for a given ripple and load current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 80 mA max - supports higher-power analog circuitry than legacy TC7662 (20 mA). |
| Input Voltage Range | 3V to 18V - enables direct use from single Li-ion, 5V, or 12V rails without pre-regulation. |
| Output Impedance | 28 Ω typ. at 15V/20mA - ensures stable regulation under dynamic loads in instrumentation. |
| Oscillator Frequency | 12 kHz (Pin 12 open) or 24 kHz (Pin 12 grounded) - allows trade-off between capacitor size and EMI. |
| Zener Voltage | 6.4 V ±0.2 V at 5 mA - provides precision reference for external regulator biasing or feedback. |
| Power Efficiency | 97% typ. at 2 kΩ load - minimizes thermal rise in compact SOIC-16 packaging. |
| Voltage Efficiency | 99.9% at no load - preserves input-to-output voltage ratio critical for rail-splitting accuracy. |
Pinout & Package
TC962COE is housed in a 16-pin SOIC Wide (0.300" body width) package rated for 0°C to +70°C operation. The package includes 7 no-connect (NC) pins and integrates functional terminals for charge pump control, ground reference, and Zener output.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Zener Cathode | Provides 6.4 V reference output; must be connected to ground through external load or regulator feedback network. |
| Pins 2,4,6,8,9,11,13,15 | No Connect | Internally unconnected; must remain floating per datasheet to avoid latch-up or performance degradation. |
| Pin 3 | C+ | Positive terminal of external pump capacitor (CP); connects to VDD during charging phase. |
| Pin 5 | GND | System ground reference for all internal switches and oscillator; requires low-impedance PCB return path. |
| Pin 7 | C− | Negative terminal of external pump capacitor (CP); inverted polarity node during discharge phase. |
| Pin 10 | VOUT | Inverted output voltage (e.g., −5 V from +5 V input); drives load directly or feeds downstream regulators. |
| Pin 12 | FREQ x 2 | Grounding enables 24 kHz oscillator mode - reduces CP/CR capacitor values by ~2× for same ripple. |
| Pin 14 | COSC | Connects external capacitor to GND to decrease oscillator frequency below 12 kHz baseline. |
| Pin 16 | VDD | Main input supply (3–18 V); powers internal oscillator, logic, and switch drivers. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-compatible upgrade | Direct replacement for TC7662/ICL7662/SI7661 with 4× higher output current and no external diodes needed. |
| Integrated Zener reference | 6.4 V / 12 Ω Zener on Pin 1 eliminates need for external reference IC in dual-rail regulator designs. |
| Dual-mode oscillator | Selectable 12 kHz or 24 kHz operation via Pin 12 grounding - enables smaller CP/CR capacitors without sacrificing output stability. |
| No low-voltage terminal | Eliminates Pin 6 requirement from TC7662, simplifying PCB layout and removing risk of incorrect grounding. |
| CMOS charge pump architecture | Delivers 97% power efficiency and 99.9% voltage efficiency - reduces heat dissipation in sealed enclosures. |
Applications
| Laptop Power Management | Disk Drive Bias Generation |
|---|---|
Use Scenario: Generating negative bias rails (e.g., −5 V, −12 V) for LCD backlight drivers and analog front-end circuitry in ultra-thin notebooks. IC Role / Device Role / Timing Role: High-current inverter IC providing regulated negative voltage from main 3.3 V or 5 V system rail. Use Value: 80 mA output capability supports multiple display segments simultaneously; 28 Ω output impedance maintains tight regulation across varying backlight loads. | Use Scenario: Supplying clean, low-noise negative voltage for HDD preamplifier ICs and servo motor drivers in 2.5-inch SATA drives. IC Role / Device Role / Timing Role: Inverting charge pump delivering stable −5 V from +5 V host supply, with minimal EMI due to selectable 12/24 kHz oscillator. Use Value: 24 kHz mode allows 4.7 μF CP/CR capacitors instead of 10 μF - saving board area in height-constrained drive assemblies. |
| Process Instrumentation | µP-Based Controller Power |
Use Scenario: Creating isolated dual-rail supplies (±5 V, ±12 V) for precision op-amps and ADC drivers in industrial sensor signal conditioning modules. IC Role / Device Role / Timing Role: Bipolar voltage generator supporting rail-splitting and reference buffering functions in 4–20 mA loop-powered transmitters. Use Value: Integrated 6.4 V Zener on Pin 1 provides accurate reference for DAC output buffers - eliminating external shunt regulator components. | Use Scenario: Providing auxiliary negative supply for microcontroller I/O buffers, RS-232 transceivers, and EEPROM programming voltage in embedded control units. IC Role / Device Role / Timing Role: Compact inverter IC generating −10 V from +5 V MCU rail for serial interface level shifting and flash memory erase cycles. Use Value: SOIC-16 footprint fits alongside MCU on dense control boards; no external diodes reduce BOM count and assembly cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current charge pump inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TC7662CPA | Same pinout but limited to 20 mA output current; requires external diodes; no integrated Zener. | Suitable only for low-current applications (<15 mA); cannot replace TC962COE in 80 mA designs without redesign. | Select TC7662CPA only if legacy compatibility and minimal load current are primary constraints. |
| LTC1044CSW | SO-16 package; 20 mA output; no Zener; supports external clock sync; slightly higher quiescent current. | Used where external clock synchronization is required; not suitable for Zener-referenced regulator topologies. | Choose LTC1044CSW when precise oscillator phasing across multiple devices is needed, not for higher-current or reference-integrated designs. |
Compared with TC7662CPA and LTC1044CSW, the TC962COE delivers 4× more output current, eliminates external diodes, and adds a precision Zener reference - making it the only option among the three capable of driving 80 mA loads while supplying a stable 6.4 V reference for external regulation.
Availability
TC962COE is available at Aetrix Electronics and suitable for laptop computers, disk drives, and process instrumentation requiring stable component supply with long-term manufacturability and consistent parametric performance.
Supply support for TC962COE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with ISO/TS-16949 certified manufacturing and global technical support infrastructure.
The TC962COE belongs to Microchip's high-efficiency charge pump converter product line, engineered specifically for space-constrained analog power systems needing bipolar voltage generation without external diodes or complex magnetics.
FAQ
What is the maximum continuous output current specification for the TC962COE?
The TC962COE is rated for up to 80 mA continuous output current under specified conditions (VDD = 15 V, TA = 25°C). This value is confirmed in the Electrical Characteristics table on DS21484D-page 3, where RO (output source resistance) is characterized at 80 mA load. Derating applies above +70°C ambient per the Absolute Maximum Ratings section.
Does the TC962COE require external diodes for inverting operation?
No, the TC962COE does not require external diodes. Its CMOS charge pump architecture uses internal MOSFET switches to perform voltage inversion. This is explicitly stated in the Features list ("No External Diodes Required") and confirmed in the General Description, which notes that the device "can put out voltages as high as 18V and as low as 3V without the need for external diodes."
How is the oscillator frequency configured on the TC962COE?
The TC962COE oscillator operates at 12 kHz by default. Grounding Pin 12 (FREQ x 2) doubles it to 24 kHz, enabling smaller external capacitors. Alternatively, connecting a capacitor from Pin 14 (COSC) to GND lowers the frequency below 12 kHz. These configurations are detailed in Section 2.0 (Pin Descriptions) and Figure 3-1 (Test Circuit) of DS21484D.
What is the purpose and electrical specification of Pin 1 on the TC962COE?
Pin 1 on the TC962COE is the Zener cathode, providing a 6.4 V ±0.2 V reference at 5 mA with 12 Ω dynamic impedance. It is intended for use in external regulator circuits requiring a stable voltage reference, as described in Section 3.0 (Applications Information) and the Electrical Specifications table on DS21484D-page 3.
Is the TC962COE pin-compatible with the TC7662 family, and what are the key layout implications?
Yes, the TC962COE is pin-compatible with the TC7662CPA in its 8-pin DIP variant, but the TC962COE uses a 16-pin SOIC Wide package with different pin mapping. Critical layout implications include: Pin 1 (Zener cathode) replaces the test pin used on TC7662; Pin 6 (low-voltage terminal) is eliminated; and Pins 12 and 14 provide new FREQ x 2 and COSC functions. Layout must follow the 16-pin SOIC pinout in Table 2-1 (DS21484D-page 4), not the 8-pin DIP pattern.
TC962COE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Ratiometric
- Output Configuration:
- Positive or Negative
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- -Vin, 2Vin, Vin/2
- Voltage - Output (Max):
- -
- Current - Output:
- 80mA
- Frequency - Switching:
- 12kHz ~ 24kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
TC962COE FAQ
1.How can I place an order for TC962COE through Aetrix?
Please submit a Request for Quotation (RFQ) for TC962COE on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TC962COE reliable?
The price and inventory of TC962COE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC962COE is usually 5 days.
3.What payment methods are accepted for TC962COE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC962COE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC962COE?
TC962COE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC962COE order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TC962COE?
For technical support, including TC962COE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC962COE requirements.
6.How does Aetrix verify that TC962COE is sourced from the original manufacturer or authorized distributors?
All TC962COE products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TC962COE meets industry standards.
7.What is the process for return or replacement of TC962COE?
All TC962COE units undergo pre-shipment inspection (PSI). If there is an issue with TC962COE, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TC962COE part is unused and in its original packaging.
Return procedure for TC962COE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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