My Inquiry
My Account
Microchip Technology TC962CPA
- Part No.:
- TC962CPA
- Manufacturer:
- Microchip Technology
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TC962CPA.pdf
- Description:
- IC REG CHARG PUMP INV 80MA 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,119
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TC962CPA from Microchip Technology is a high-current CMOS charge pump DC-to-DC inverter IC, delivering up to 80 mA output current with 28 Ω typical output impedance, operating from 3V to 18V input, and featuring an integrated 6.4 V Zener reference on Pin 1 for external regulator support - used in laptop power rails and µP-based controllers.
For engineers reviewing the TC962CPA datasheet, TC962CPA pinout, TC962CPA application, or TC962CPA equivalent, this page provides verified functional specifications, validated pin roles for the 8-pin DIP package, confirmed Zener reference behavior, oscillator frequency doubling capability via Pin 6 grounding, and real-world efficiency data (97% power conversion at 2 kΩ load).
Technical Context
The TC962CPA implements a four-switch capacitive charge pump topology with internal level-shifted MOSFET drivers synchronized to a 12 kHz (or 24 kHz when Pin 6 is grounded) oscillator. Its architecture eliminates need for external diodes and removes the low-voltage terminal required by legacy TC7662 designs.
It integrates a 6.4 V Zener diode (5 mA, 12 Ω dynamic impedance) on Pin 1 for precision reference use in external LDOs or feedback networks, while Pin 7 (COSC) allows external capacitor-based oscillator frequency tuning independent of the FREQ×2 control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 80 mA max - supports higher load demands than TC7662 (20 mA), enabling single-chip bias generation for multiple analog stages. |
| Input Voltage Range | 3V to 18V - accommodates wide-input industrial and portable systems without pre-regulation. |
| Output Impedance | 28 Ω typ. at 15V/20mA - ensures stable voltage under dynamic loads; lower than TC7662's ~50 Ω. |
| Oscillator Frequency | 12 kHz (Pin 6 open) or 24 kHz (Pin 6 grounded) - higher frequency enables smaller external capacitors (e.g., 10 μF instead of 22 μF) for same ripple performance. |
| Zener Voltage | 6.4 V ±0.2 V at 5 mA - precision reference for external linear regulators; dynamic impedance 12 Ω enables low-noise feedback paths. |
| Power Efficiency | 97% typ. at RL = 2 kΩ - minimizes thermal rise in compact DIP-8 layouts; exceeds ICL7660S performance. |
| Voltage Efficiency | 99.9% typ. at no load - near-ideal inversion ratio preserves headroom in low-power µP subsystems. |
Pinout & Package
TC962CPA uses an 8-pin plastic DIP (dual in-line package) with 0.300-inch body width and 0.100-inch lead pitch, rated for 0°C to +70°C operation and 730 mW power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Zener Cathode | Provides 6.4 V reference output; must be connected to ground or external regulator feedback node - not left floating. |
| 2 | C+ | Positive terminal of external pump capacitor CP; connects to VDD during charge phase. |
| 3 | GND | System ground reference; all internal switching and oscillator circuits referenced here. |
| 4 | C− | Negative terminal of external pump capacitor CP; connects to VOUT during discharge/inversion phase. |
| 5 | VOUT | Inverted output voltage (e.g., −5 V from +5 V input); sourced through low-impedance internal switches. |
| 6 | FREQ × 2 | Grounding doubles oscillator frequency from 12 kHz to 24 kHz - reduces required CP/CR capacitance by ~2× for same ripple. |
| 7 | COSC | Connects external timing capacitor to GND; increases total timing capacitance to reduce oscillator frequency below 12 kHz. |
| 8 | VDD | Positive supply input (3–18 V); powers internal logic, oscillator, and switch drivers. |
Key Features
| Feature | Design Value |
|---|---|
| No external diodes required | Integrated CMOS switch matrix replaces discrete diode pumps - simplifies BOM, improves reliability, and eliminates forward-voltage drop losses. |
| Pin-compatible with TC7662/ICL7662/SI7661 | Direct drop-in replacement in existing layouts using 8-pin DIP footprint - no PCB redesign needed for upgrade. |
| On-chip 6.4 V Zener reference | Enables local regulation of analog circuitry (e.g., op-amp supplies or ADC references) without adding external Zener or shunt regulator. |
| Frequency doubling option | Grounding Pin 6 cuts required external capacitor values by half - saves board space and cost in space-constrained laptop or disk drive applications. |
| 97% power conversion efficiency | Reduces thermal load in sealed enclosures; allows sustained 80 mA output without heatsinking in standard DIP-8 mounting. |
Applications
| Laptop Power Management | Disk Drive Bias Generation |
|---|---|
Use Scenario: Generating negative rail (e.g., −5 V) for LCD bias or op-amp inputs in battery-powered laptops with tight thermal and space constraints. IC Role / Device Role / Timing Role: High-efficiency inverting charge pump providing regulated negative voltage from main 3.3 V or 5 V rail. Use Value: Eliminates need for magnetic inductors or external diodes - reduces solution size by >40% vs. inductive converters and improves MTBF. | Use Scenario: Supplying dual-rail voltages (+12 V / −5 V) for voice coil motor drivers and preamplifier stages in 2.5″ HDD servo electronics. IC Role / Device Role / Timing Role: Inverter IC delivering stable −5 V at up to 80 mA with low output impedance to maintain signal integrity during rapid actuator movement. Use Value: 28 Ω output impedance ensures <10 mV ripple under 50 mA transient loads - critical for minimizing position error in closed-loop servo control. |
| Process Instrumentation Signal Conditioning | µP-Based Controller Auxiliary Supplies |
Use Scenario: Providing isolated ±5 V rails for precision 16-bit ADC front-ends and programmable gain amplifiers in industrial temperature/pressure transmitters. IC Role / Device Role / Timing Role: Charge pump inverter supplying clean negative supply to op-amps and ADC reference buffers, leveraging on-chip Zener for stable 6.4 V reference. Use Value: Integrated 6.4 V Zener (12 Ω dynamic impedance) enables sub-0.1% reference drift over temperature - directly improving measurement accuracy. | Use Scenario: Generating −10 V bias for EEPROM programming or reset supervisor ICs in microcontroller-based PLC modules operating across −40°C to +85°C. IC Role / Device Role / Timing Role: Robust inverter IC supporting extended temperature range (via EPA variant) and delivering reliable startup under brown-out conditions. Use Value: Wide 3–18 V input range allows direct connection to unregulated 12 V system rail - avoids need for dedicated pre-regulator stage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge pump inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TC7662CPA | Lower 20 mA output current; requires external low-voltage terminal (Pin 6); no integrated Zener; 50 Ω output impedance. | Suitable only for ≤20 mA loads; cannot replace TC962CPA in high-current or Zener-referenced designs. | Select TC7662CPA only for legacy cost-sensitive designs where 80 mA capability and Zener reference are unnecessary. |
| ICL7662CPA | Same pinout but 20 mA output; no Zener; higher quiescent current (700 μA vs. 510 μA typ.); no FREQ×2 option. | Compatible in basic inverter roles but lacks frequency doubling and reference functionality - unsuitable for space-constrained or precision-regulated systems. | Choose ICL7662CPA only if sourcing legacy inventory; verify layout compatibility and recalculate capacitor sizing due to lower efficiency. |
Compared with TC7662CPA and ICL7662CPA, the TC962CPA delivers 4× higher output current, integrates a precision Zener reference, enables frequency doubling for smaller capacitors, and achieves 97% power efficiency - making it the optimal choice for next-generation portable and instrumentation designs requiring higher performance in the same DIP-8 footprint.
Availability
TC962CPA 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 TC962CPA 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 Inc. 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 TC962CPA belongs to Microchip's high-efficiency charge pump converter product line, designed specifically to replace legacy inverter ICs in portable, industrial, and computing applications where size, efficiency, and integration are critical.
FAQ
What is the maximum continuous output current specification for the TC962CPA?
The TC962CPA is rated for 80 mA maximum continuous output current at VDD = 15 V and TA = 25°C, as confirmed in the Electrical Specifications table on DS21484D-page 3. This is a key differentiator from the TC7662CPA (20 mA) and reflects its enhanced CMOS switch design and thermal performance in the 8-pin DIP package.
Does the TC962CPA require external diodes for inverter operation?
No, the TC962CPA does not require external diodes. Its internal four-MOSFET charge pump architecture replaces discrete diode-based topologies, as explicitly stated in the Features list and Applications Information section. This eliminates forward-voltage losses and improves efficiency - a confirmed design advantage over older charge pump ICs like the ICL7660S.
How does grounding Pin 6 (FREQ × 2) affect the TC962CPA's performance?
Grounding Pin 6 doubles the internal oscillator frequency from 12 kHz to 24 kHz, which proportionally increases charge transfer rate and allows use of smaller external pump capacitors (e.g., 10 μF instead of 22 μF) for equivalent output ripple and current capability - a verified behavior documented in Section 2.0 (Pin Descriptions) and Figure 3-2 of the datasheet.
What is the purpose and electrical specification of Pin 1 on the TC962CPA?
Pin 1 is the Zener cathode terminal, providing a 6.4 V ±0.2 V reference at 5 mA with 12 Ω dynamic impedance. It is intended for use with external regulator circuitry, as detailed in Section 3.0 and Table 2-1. This integrated reference eliminates the need for an external Zener diode in bias supply designs using the TC962CPA.
Is the TC962CPA pin-compatible with the TC7662CPA and ICL7662CPA?
Yes, the TC962CPA is explicitly pin-compatible with the TC7662CPA and ICL7662CPA in the 8-pin DIP package, as confirmed in the Features section and Device Selection Table. However, Pin 6 (FREQ × 2) and Pin 1 (Zener Cathode) provide new functionality not present in those legacy parts - requiring verification of existing circuit connections before substitution.
TC962CPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TC962CPA FAQ
1.How can I place an order for TC962CPA through Aetrix?
Please submit a Request for Quotation (RFQ) for TC962CPA 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 TC962CPA reliable?
The price and inventory of TC962CPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC962CPA is usually 5 days.
3.What payment methods are accepted for TC962CPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC962CPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC962CPA?
TC962CPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC962CPA 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 TC962CPA?
For technical support, including TC962CPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC962CPA requirements.
6.How does Aetrix verify that TC962CPA is sourced from the original manufacturer or authorized distributors?
All TC962CPA 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 TC962CPA meets industry standards.
7.What is the process for return or replacement of TC962CPA?
All TC962CPA units undergo pre-shipment inspection (PSI). If there is an issue with TC962CPA, 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 TC962CPA part is unused and in its original packaging.
Return procedure for TC962CPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TC962CPA Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
