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onsemi CAT3200H2-T3
- Part No.:
- CAT3200H2-T3
- Manufacturer:
- onsemi
- Package:
- -
- Datasheet:
-
CAT3200H2-T3.pdf
- Description:
- IC REG 100MA
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Product details
Overview
CAT3200H2-T3 from onsemi is a low-noise regulated charge pump DC-DC converter delivering fixed 5 V or adjustable output (1.27 V feedback reference) with up to 100 mA load current, 2 MHz switching frequency, and shutdown current <1 µA. It operates from 2.2 V to 4.5 V input, supports ceramic flying/output capacitors as small as 1 µF, and integrates foldback current limiting and thermal shutdown for battery-powered portable devices.
For engineers reviewing the CAT3200H2-T3 datasheet, pinout, applications, or equivalent options, key selection criteria include regulated output stability under load (±20 mV load regulation), low 1.7 mA typical quiescent current, UDFN-8 2 mm × 2 mm package footprint, and compatibility with 1 µF ceramic capacitors for space-constrained handheld designs.
Technical Context
The CAT3200H2-T3 employs a non-overlapping 2-phase switched-capacitor topology to double the input voltage, with internal feedback sensing at the FB pin (1.27 V reference) enabling precise output regulation. Its constant-frequency 2 MHz oscillator ensures predictable EMI behavior and allows use of compact 1 µF ceramic capacitors without inductors.
Operation includes slew-rate-controlled soft-start (<0.5 ms turn-on time), reverse leakage protection (<30 µA from VOUT in shutdown), and dual protection: foldback current limiting (~80 mA short-circuit current) and thermal shutdown at 160 °C with 20 °C hysteresis. The device separates power ground (PGND) and signal ground (SGND) to minimize noise coupling into the feedback path.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5 V (FB grounded) or adjustable via external resistor divider (1.27 V reference) |
| Max Output Current | 100 mA continuous; supports handheld loads without thermal derating over −40 °C to +85 °C |
| Switching Frequency | 2 MHz typical; enables use of 1 µF ceramic flying/output capacitors and reduces EMI filtering complexity |
| Quiescent Current | 1.7 mA typical; minimizes battery drain in active mode for multi-day portable operation |
| Shutdown Current | <1 µA; extends shelf life and standby time in battery-backed systems |
| Output Ripple | 30 mVp-p typical at 100 mA load; controlled by COUT ESR and 1 µF minimum capacitance |
| Efficiency | 81% typical at 50 mA, 3 V input → 5 V output; optimized for mid-load battery boost applications |
Pinout & Package
The CAT3200H2-T3 is housed in an 8-pad UDFN package measuring 2 mm × 2 mm with 0.5 mm pitch (Case 517AW), featuring an exposed thermal pad connected to PGND on PCB for enhanced thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CPOS | Flying capacitor positive terminal | Connects to high-side plate of 1 µF ceramic flying capacitor; must avoid polarized types due to voltage reversal during startup |
| 2 - VIN | Main input power supply | Accepts 2.2–4.5 V; requires local 1 µF low-ESR ceramic bypass to suppress switching noise injection |
| 3 - CNEG | Flying capacitor negative terminal | Completes flying capacitor loop; paired with CPOS to enable charge-pump voltage doubling |
| 4 - PGND | Power ground return | Carries high-frequency switching currents; must be star-connected to CIN/CPOS/CNEG grounds to limit noise |
| 5 - SGND | Signal ground reference | Reference for FB, SHDN, and internal error amplifier; isolated from PGND to prevent ground bounce in feedback path |
| 6 - SHDN | Active-low shutdown control | CMOS input (VIH = 1.3 V, VIL = 0.4 V); no internal pull-down-must be driven to valid logic level |
| 7 - FB | Feedback voltage sense | 1.27 V reference input; connects to resistor divider for adjustable output or to GND for fixed 5 V mode |
| 8 - VOUT | Regulated output voltage | Delivers up to 100 mA; requires local 1 µF low-ESR ceramic capacitor to minimize ripple and transient response |
Key Features
| Feature | Design Value |
|---|---|
| Constant 2 MHz switching | Enables consistent EMI profile and eliminates need for large LC filters in space-limited layouts |
| Slew-rate controlled soft-start | Limits inrush current to protect input source and downstream capacitors during power-up |
| Separate PGND/SGND pins | Reduces ground noise coupling into feedback and shutdown logic, improving regulation accuracy |
| Foldback current limiting | Reduces output current progressively during overload (to ~80 mA short-circuit), lowering thermal stress |
| Reverse leakage protection | Restricts backflow from VOUT to VIN in shutdown mode (<30 µA), preserving battery charge |
Applications
| White LED Backlighting | USB-Powered Peripherals |
|---|---|
Use Scenario: Driving 3–5 white LEDs in series from a single 3.3 V USB supply in portable media players. IC Role / Device Role / Timing Role: Boost converter providing regulated 5 V output to LED current sources with minimal ripple. Use Value: 30 mVp-p output ripple and 100 mA capability ensure stable LED brightness without visible flicker. | Use Scenario: Powering 3.3 V logic and analog circuitry (e.g., ADC, sensor interface) from a 5 V USB port in compact dongles. IC Role / Device Role / Timing Role: Step-down charge pump (5 V → 3.3 V adjustable) replacing inductor-based buck converters. Use Value: 2 MHz operation and 1 µF capacitors eliminate magnetic components, reducing board area by >40% vs. buck solutions. |
| Medical Diagnostic Handhelds | Industrial Sensor Nodes |
Use Scenario: Supplying 5 V to low-power microcontrollers and optical sensors in battery-operated point-of-care devices. IC Role / Device Role / Timing Role: Primary regulated power rail with <1 µA shutdown current extending battery life between measurements. Use Value: 1.7 mA quiescent current and thermal shutdown at 160 °C ensure safe, long-term operation in sealed enclosures. | Use Scenario: Generating 3.3 V from 2.5 V lithium coin cell in wireless temperature/humidity nodes. IC Role / Device Role / Timing Role: Efficient boost converter supporting intermittent 50 mA transmit bursts without brownout. Use Value: 81% efficiency at 50 mA and foldback current limiting prevent voltage collapse during RF transmission peaks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge pump DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17222ETA+ | 1.2 V to 5.5 V input; 500 mA peak; integrated LDO post-regulator; 1.13 MHz switching | Higher current, lower noise, but larger 2 mm × 2 mm TDFN package with different pinout | Preferred when >100 mA or ultra-low noise required; not pin-compatible |
| TPS60403DBVR | Fixed 3.3 V output only; 60 mA max; 500 kHz switching; requires 10 µF flying cap | Limited to low-current 3.3 V rails; slower switching increases capacitor size and EMI risk | Lower-cost option for simple 3.3 V bias rails where 100 mA and 5 V are unnecessary |
Compared with MAX17222ETA+ and TPS60403DBVR, the CAT3200H2-T3 uniquely balances 100 mA capability, 5 V fixed/adjustable flexibility, 2 MHz operation for miniaturization, and sub-1 µA shutdown-making it optimal for compact, battery-sensitive 5 V boost applications where pin compatibility with UDFN-8 layout is required.
Availability
CAT3200H2-T3 is available at Aetrix Electronics and suitable for handheld portable devices, white LED backlighting, medical diagnostic tools, and industrial sensor nodes requiring stable component supply across extended production lifecycles.
Supply support for CAT3200H2-T3 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, and intelligent edge applications.
The CAT3200H2-T3 belongs to onsemi's low-noise charge pump converter product line, designed specifically for space- and power-constrained portable electronics needing regulated boost without inductors.
FAQ
What output voltage options does the CAT3200H2-T3 support?
The CAT3200H2-T3 supports both fixed 5 V output (by grounding the FB pin) and adjustable output (via external resistor divider referenced to its 1.27 V internal feedback voltage). When configured for adjustable mode, output voltages from approximately 2.5 V to 5 V are achievable depending on input voltage and resistor values, with the constraint that VOUT ≤ 2 × VIN.
Can the CAT3200H2-T3 operate from a 2.5 V input to deliver 3.3 V?
Yes, the CAT3200H2-T3 can operate from a 2.5 V input to deliver 3.3 V using the adjustable output configuration. As confirmed in the datasheet's Figure 14 and Table 4, it maintains regulation across 2.2 V–3.0 V input for 3.3 V output, delivering up to 100 mA with typical efficiency of 80% at 50 mA load.
What is the recommended flying capacitor value for the CAT3200H2-T3?
The CAT3200H2-T3 datasheet specifies a 1 µF ceramic capacitor for the flying capacitor (CFLY), connected between CPOS and CNEG pins. X5R or X7R dielectrics are recommended to maintain capacitance across temperature and bias; polarized types (tantalum/aluminum) must be avoided due to potential voltage reversal during startup.
Does the CAT3200H2-T3 require external compensation components?
No, the CAT3200H2-T3 does not require external compensation components. Its internal error amplifier and feedback network are fully compensated for stability with the specified 1 µF output capacitor. Layout adherence-especially separating PGND and SGND traces-is the primary design requirement for reliable regulation.
How does thermal protection work in the CAT3200H2-T3?
The CAT3200H2-T3 incorporates thermal shutdown that activates at approximately 160 °C junction temperature, disabling the charge pump until the die cools to ~140 °C (20 °C hysteresis). This cycling behavior prevents permanent damage during sustained overload or poor PCB thermal design, and is documented in Table 5 and the Thermal Protection section of the datasheet.
CAT3200H2-T3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
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- Grade:
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- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
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CAT3200H2-T3 FAQ
1.How can I place an order for CAT3200H2-T3 through Aetrix?
Please submit a Request for Quotation (RFQ) for CAT3200H2-T3 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 CAT3200H2-T3 reliable?
The price and inventory of CAT3200H2-T3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CAT3200H2-T3 is usually 5 days.
3.What payment methods are accepted for CAT3200H2-T3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CAT3200H2-T3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CAT3200H2-T3?
CAT3200H2-T3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CAT3200H2-T3 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 CAT3200H2-T3?
For technical support, including CAT3200H2-T3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CAT3200H2-T3 requirements.
6.How does Aetrix verify that CAT3200H2-T3 is sourced from the original manufacturer or authorized distributors?
All CAT3200H2-T3 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 CAT3200H2-T3 meets industry standards.
7.What is the process for return or replacement of CAT3200H2-T3?
All CAT3200H2-T3 units undergo pre-shipment inspection (PSI). If there is an issue with CAT3200H2-T3, 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 CAT3200H2-T3 part is unused and in its original packaging.
Return procedure for CAT3200H2-T3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CAT3200H2-T3 Tags
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