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onsemi CAT3200HU2-GT3
- Part No.:
- CAT3200HU2-GT3
- Manufacturer:
- onsemi
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
CAT3200HU2-GT3.pdf
- Description:
- IC REG CHARGE PUMP ADJ/5V 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,037
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Product details
Overview
CAT3200HU2-GT3 from onsemi is a low-noise regulated charge pump DC-DC converter delivering fixed 5 V or adjustable output (via FB pin) with up to 100 mA load current, 2 MHz switching frequency, and operation from 2.2 V to 4.5 V input. It integrates foldback current limiting, thermal shutdown, soft-start, and reverse leakage protection-ideal for space-constrained battery-powered portable devices requiring clean 5 V rail generation.
For engineers reviewing the CAT3200HU2-GT3 datasheet, pinout, applications, or equivalent options, key selection considerations include its UDFN-8 2 mm × 2 mm package, 1.27 V feedback reference, <1 µA shutdown current, ±20 mV load regulation, and compatibility with 1 µF ceramic capacitors for compact boost conversion in handheld and LED driver designs.
Technical Context
The CAT3200HU2-GT3 employs a non-overlapping 2-phase switched-capacitor topology to double the input voltage, with internal regulation achieved via a precision 1.27 V feedback comparator and error amplifier. Output voltage is set either by grounding FB (for 5 V fixed) or using external resistive dividers (adjustable mode).
It features integrated slew-rate control during startup to limit inrush current, CMOS-level active-low SHDN with no internal pull-down, and dual ground paths (PGND for power switching, SGND for signal reference) to minimize noise coupling. Protection includes thermal shutdown at ~160 °C with 20 °C hysteresis and foldback current limiting that reduces short-circuit current to ~80 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5 V (FB = GND) or adjustable (VFB = 1.27 V typical); enables flexible rail generation without external LDO post-regulation. |
| Max Output Current | 100 mA continuous; supports moderate-power loads like white LEDs or microcontroller peripherals in portable systems. |
| Switching Frequency | 2 MHz typical (1.3–2.6 MHz range); allows use of tiny 1 µF ceramic flying/output capacitors and minimizes EMI filtering footprint. |
| Shutdown Current | <1 µA; extends battery life in standby modes of always-on or intermittently active devices. |
| Load Regulation | ±20 mV (10–100 mA); ensures stable output under dynamic load changes common in digital subsystems. |
| Quiescent Current | 1.7 mA typical; maintains high light-load efficiency critical for battery longevity. |
| Thermal Shutdown Threshold | 160 °C junction temperature; provides robust overtemperature protection without latch-up, cycling safely until fault removal. |
Pinout & Package
The CAT3200HU2-GT3 is housed in an 8-pad UDFN package (2 mm × 2 mm, Case 517AW), with 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 + side of 1 µF ceramic flying cap; must avoid polarized caps due to voltage reversal during startup. |
| 2 VIN | Main input power supply | Accepts 2.2–4.5 V; requires local 1–4.7 µF low-ESR ceramic bypass near pin to suppress supply noise. |
| 3 CNEG | Flying capacitor negative terminal | Completes charge pump loop; paired with CPOS for capacitor switching; no polarity constraint. |
| 4 PGND | Power ground return | Low-impedance path for switching currents; must be star-connected to CIN/COUT grounds to reduce noise injection. |
| 5 SGND | Signal ground reference | Reference for FB, SHDN, and internal circuitry; isolated from PGND except at single-point connection to avoid ground loops. |
| 6 SHDN | Active-low shutdown control | CMOS input (VIH ≥1.3 V, VIL ≤0.4 V); must be driven-not floated-to enable/disable regulation. |
| 7 FB | Feedback voltage input | Senses output divider ratio; 1.27 V internal reference enables precise adjustable outputs (e.g., 3.3 V from 2.5 V input). |
| 8 VOUT | Regulated output voltage | Delivers 5 V (fixed) or programmed voltage; requires 1–4.7 µF low-ESR ceramic cap to control ripple & stability. |
Key Features
| Feature | Design Value |
|---|---|
| Constant 2 MHz operation | Enables predictable EMI spectrum and consistent capacitor sizing across designs-no frequency variation with load or input. |
| Soft-start with slew-rate control | Limits inrush current during power-up, preventing input rail droop and reducing stress on source capacitance and PCB traces. |
| Reverse leakage protection | Restricts reverse current from VOUT to VIN in shutdown to ≤30 µA, preserving battery charge when output remains biased. |
| Dual ground separation (PGND/SGND) | Minimizes switching noise coupling into feedback and logic circuits, improving regulation accuracy and SHDN noise immunity. |
| Foldback current limiting | Reduces short-circuit current from 225 mA to ~80 mA as VOUT collapses, lowering power dissipation and thermal stress during faults. |
Applications
| White LED Backlighting | 3.3 V Microcontroller Power Rail |
|---|---|
|
Use Scenario: Driving 3–5 parallel white LEDs in smartphone or PDA displays from a single-cell Li-ion battery (2.7–4.2 V). IC Role / Device Role: Boost converter providing regulated 5 V with low output ripple (<45 mVp-p) to ensure uniform LED brightness and minimal visible flicker. Use Value: Eliminates need for inductor-based solutions, enabling ultra-thin display modules with 2 mm × 2 mm footprint and <1 µA shutdown current for display-off power savings. |
Use Scenario: Generating stable 3.3 V supply for ARM Cortex-M0+ MCU and associated sensors in wearable health monitors. IC Role / Device Role: Adjustable-output charge pump configured via R1/R2 to deliver 3.3 V from 2.5 V input, supporting brown-out-free operation down to 2.2 V input. Use Value: Achieves >81% efficiency at 50 mA while maintaining ±20 mV load regulation-critical for ADC reference stability and sensor accuracy. |
| Handheld Barcode Scanner | USB Peripheral Power Boost |
|
Use Scenario: Powering laser diode driver and CMOS image sensor in battery-operated handheld scanners with intermittent high-current pulses. IC Role / Device Role: Low-noise 5 V rail generator with fast turn-on time (<0.5 ms) and thermal foldback to survive repeated 100 mA bursts without shutdown. Use Value: Delivers clean, stable voltage during rapid on/off cycles-preventing sensor reset or laser misfire-while occupying <4 mm² PCB area. |
Use Scenario: Enabling USB-powered accessories (e.g., Bluetooth audio dongles) to operate from 3.3 V USB data lines when host supplies only 3 V nominal. IC Role / Device Role: Compact 3 V-to-5 V boost converter with 1.27 V FB reference, allowing precise output tuning to meet USB 2.0 VBUS tolerance (4.75–5.25 V). Use Value: Meets USB compliance with ±2% output accuracy (4.8–5.2 V) and <1 µA quiescent draw-extending runtime between host reconnections. |
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 |
|---|---|---|---|
| MAX8815AETE+T | Fixed 5 V only; 1.5 MHz switching; 120 mA max output; requires 2.2 µF flying cap. | Lacks adjustable output and 2 MHz frequency; higher minimum input (2.7 V) limits low-voltage operation. | Choose for higher output current where adjustable voltage is unnecessary and layout allows larger capacitor footprint. |
| TPS60403DBVR | Fixed 5 V; 500 kHz switching; 60 mA max; integrated flying cap; no FB pin. | Lower frequency increases EMI filtering needs; lower current rating restricts LED count or peripheral count. | Choose for ultra-low-cost, minimal-BOM designs where 60 mA suffices and board space permits larger inductors/caps. |
Compared with MAX8815AETE+T and TPS60403DBVR, the CAT3200HU2-GT3 uniquely combines adjustable output, 2 MHz operation, 100 mA capability, and sub-µA shutdown in a 2 mm × 2 mm UDFN-making it optimal for next-gen compact, multi-rail portable electronics requiring design flexibility and minimal footprint.
Availability
CAT3200HU2-GT3 is available at Aetrix Electronics and suitable for handheld portable devices, white LED backlighting, and 3.3 V microcontroller power rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for CAT3200HU2-GT3 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 specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The CAT3200HU2-GT3 belongs to onsemi's low-noise charge pump DC-DC converter product line, designed specifically for compact, battery-powered applications demanding high integration, minimal external components, and robust protection in ultra-small packages.
FAQ
What output voltage options does the CAT3200HU2-GT3 support?
The CAT3200HU2-GT3 supports both fixed 5 V output (when FB pin is grounded) and adjustable output (using external resistor divider). Its internal 1.27 V feedback reference enables precise programming-for example, 3.3 V from 2.5 V input. The CAT3200HU2-GT3 datasheet specifies output accuracy of ±2% (4.8–5.2 V) under full load and input variation, making it suitable for noise-sensitive analog and mixed-signal circuits.
Can the CAT3200HU2-GT3 operate from a 2.2 V input?
Yes-the CAT3200HU2-GT3 supports input voltages as low as 2.2 V in adjustable-output mode (e.g., 3.3 V generation) and 2.7 V in fixed 5 V mode. At 2.2 V input, it delivers regulated 3.3 V up to 100 mA with >77% efficiency per the datasheet's Figure 16. This extended low-VIN capability makes the CAT3200HU2-GT3 ideal for single-cell alkaline or NiMH battery systems where voltage sags below 2.5 V during discharge.
What capacitor values are required for the CAT3200HU2-GT3?
The CAT3200HU2-GT3 is optimized for 1 µF ceramic capacitors on CIN, COUT, and CFLY-enabled by its 2 MHz switching frequency. The datasheet recommends X5R/X7R dielectrics (e.g., C0805C105K9RACTU) for stable capacitance across temperature and bias. Using Z5U/Y5V types may cause >60% capacitance loss at rated voltage, degrading ripple and regulation-so the CAT3200HU2-GT3 design relies on verified 1 µF ceramic performance for minimal footprint and predictable behavior.
How does the CAT3200HU2-GT3 handle short-circuit conditions?
The CAT3200HU2-GT3 uses foldback current limiting and thermal shutdown for short-circuit protection. Under VOUT = 0 V, output current drops to ~80 mA (not 225 mA) to reduce power dissipation. If junction temperature exceeds ~160 °C, it disables switching and auto-recovers once cooled to ~140 °C. This safe, non-latching behavior prevents damage during transient shorts-ensuring reliable operation in the CAT3200HU2-GT3's target handheld and portable applications.
Is the CAT3200HU2-GT3 RoHS compliant and lead-free?
Yes-the CAT3200HU2-GT3 is Pb-free, halogen-free/BFR-free, and fully RoHS compliant per the manufacturer's documentation. Its UDFN-8 package uses NiPdAu lead finish, and the device meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) for unlimited floor life. This compliance ensures the CAT3200HU2-GT3 is suitable for global commercial and medical-grade portable electronics manufacturing without restriction.
CAT3200HU2-GT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Adjustable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.2V
- Voltage - Input (Max):
- 4.5V
- Voltage - Output (Min/Fixed):
- 2.7V (5V)
- Voltage - Output (Max):
- 6V
- Current - Output:
- 100mA
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (2x2)
CAT3200HU2-GT3 FAQ
1.How can I place an order for CAT3200HU2-GT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for CAT3200HU2-GT3 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 CAT3200HU2-GT3 reliable?
The price and inventory of CAT3200HU2-GT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CAT3200HU2-GT3 is usually 5 days.
3.What payment methods are accepted for CAT3200HU2-GT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CAT3200HU2-GT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CAT3200HU2-GT3?
CAT3200HU2-GT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CAT3200HU2-GT3 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 CAT3200HU2-GT3?
For technical support, including CAT3200HU2-GT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CAT3200HU2-GT3 requirements.
6.How does Aetrix verify that CAT3200HU2-GT3 is sourced from the original manufacturer or authorized distributors?
All CAT3200HU2-GT3 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 CAT3200HU2-GT3 meets industry standards.
7.What is the process for return or replacement of CAT3200HU2-GT3?
All CAT3200HU2-GT3 units undergo pre-shipment inspection (PSI). If there is an issue with CAT3200HU2-GT3, 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 CAT3200HU2-GT3 part is unused and in its original packaging.
Return procedure for CAT3200HU2-GT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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