My Inquiry
My Account
onsemi CAT6217-330TDGT3
- Part No.:
- CAT6217-330TDGT3
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
CAT6217-330TDGT3.pdf
- Description:
- IC REG LDO 3.3V 150MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,978
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CAT6217-330TDGT3 from onsemi is a 150 mA CMOS low dropout regulator delivering 3.3 V output with ±1.0% initial accuracy, 90 mV typical dropout at full load, and stable operation with only a 1 µF ceramic output capacitor. It features quick-start capability with external 10 nF bypass capacitor for noise reduction, zero shutdown current, and under-voltage lockout below 2.1 V - ideal for space-constrained battery-powered consumer electronics.
For engineers reviewing the CAT6217-330TDGT3 datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed 150 mA output, low-noise performance enabled by BYP pin, thermal protection, TSOT-23-5 package compatibility, and support for input voltages from 2.3 V to 5.5 V in portable power rail designs.
Technical Context
The CAT6217-330TDGT3 integrates a precision bandgap reference, low-impedance PMOS pass element, and internal UVLO circuitry that disables regulation when VIN falls below 2.1 V. Its enable logic includes a built-in 2.5 MΩ pull-down resistor, ensuring default-off behavior when EN is floating.
Stability is achieved with minimal external components: a 1 µF ceramic COUT (ESR 5–500 mΩ) suffices for full-load transient response, while optional 10 nF CBYP between BYP and GND improves PSRR by up to 10 dB at 20 kHz - critical for RF-sensitive subsystems powered from noisy DC-DC sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V nominal, ±1.0% initial accuracy ensures tight regulation for MCU core or I/O rails without post-regulation trimming. |
| Max Output Current | 150 mA guaranteed - supports moderate-power peripherals like sensors, Bluetooth modules, or display drivers. |
| Dropout Voltage | 90 mV typical at 150 mA - enables operation down to VIN = 3.39 V, extending battery runtime in single-cell Li-ion or two-cell alkaline systems. |
| Ground Current | 55 µA typical at no load - minimizes quiescent drain during sleep modes in always-on devices. |
| PSRR @ 1 kHz | 64 dB with 10 nF BYP capacitor - suppresses switching noise from upstream DC-DC converters feeding sensitive analog circuits. |
| Enable Threshold | VHI = 1.6 V min over temperature - compatible with 1.8 V GPIOs and open-drain controllers without level-shifting. |
| Thermal Shutdown | 160 °C with 10 °C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
Package: 5-lead TSOT-23 (1 mm max height, case 419AE), RoHS-compliant, Pb-free, halogen-free/BFR-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 2.3–5.5 V; requires local 1 µF ceramic bypass to GND for stability and EMI suppression. |
| GND | Ground reference | Mandatory low-impedance connection to PCB ground plane; shared return path for all internal circuits. |
| EN | Active-high enable control | Internal 2.5 MΩ pull-down ensures safe default-off state; logic high ≥1.6 V activates regulator. |
| BYP | Reference bypass node | Connects optional 10 nF capacitor to GND to reduce output noise and boost high-frequency PSRR. |
| VOUT | Regulated output | Delivers 3.3 V ±1% at up to 150 mA; requires 1 µF ceramic capacitor with 5–500 mΩ ESR for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Quick-start with BYP pin | Enables 150 µs turn-on time while supporting ultra-low-noise operation via external 10 nF capacitor - eliminates trade-off between speed and ripple. |
| Zero shutdown current | 1 µA max shutdown ground current allows true off-state isolation in multi-rail systems where leakage must be minimized. |
| Stable with 1 µF ceramic COUT | Reduces BOM cost and board area vs. traditional LDOs requiring tantalum or larger ceramics; supports automated placement. |
| Integrated thermal & short-circuit protection | Self-limiting behavior prevents catastrophic failure during solder shorts, miswiring, or ambient temperature excursions beyond 125 °C. |
| UVLO threshold at 2.1 V | Prevents brown-out operation and data corruption in microcontrollers by disabling output before supply collapses below functional voltage. |
Applications
| Smartphone Power Management | Wireless Headset Audio Rail |
|---|---|
Use Scenario: Providing clean 3.3 V bias to baseband processor I/O banks and sensor hubs in compact smartphone mainboards. IC Role / Device Role / Timing Role: Primary low-noise post-regulator for noise-sensitive digital interfaces (I²C, SPI) and analog sensor front-ends. Use Value: 45 µVRMS output noise and 64 dB PSRR ensure signal integrity without adding ferrite beads or LC filters. | Use Scenario: Supplying regulated 3.3 V to Bluetooth audio SoCs and MEMS microphones in battery-powered wireless headsets. IC Role / Device Role / Timing Role: Standby-aware LDO enabling rapid wake-from-sleep with sub-200 µs turn-on and <55 µA quiescent draw. Use Value: Zero shutdown current extends shelf life and preserves battery charge during months of storage. |
| Portable Medical Monitor | IoT Edge Sensor Node |
Use Scenario: Powering ECG front-end amplifiers and ADC reference circuits in handheld patient monitors. IC Role / Device Role / Timing Role: Precision voltage source with ±1% accuracy and low drift (<40 ppm/°C) to maintain measurement fidelity across operating temperature. Use Value: Tight initial tolerance and low tempco eliminate need for system-level calibration in field-deployed units. | Use Scenario: Delivering stable 3.3 V to ultra-low-power MCUs (e.g., ARM Cortex-M0+) and environmental sensors in solar-charged IoT nodes. IC Role / Device Role / Timing Role: Energy-efficient regulator supporting duty-cycled operation with fast enable/disable transitions synchronized to sensor sampling intervals. Use Value: 150 µs turn-on time and 80 µA full-load ground current maximize energy per transmission cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3302E/TO | 300 mA rated output, higher 250 mV dropout at 250 mA, no BYP pin or quick-start feature. | Lacks noise-reduction capability; suitable only where PSRR >50 dB is not required. | Select when higher current headroom is needed but low-noise operation is secondary. |
| TCS2117-330IDBVR | Same 150 mA rating and 3.3 V output, but 120 mV typical dropout and no integrated UVLO. | Requires external UVLO circuitry for battery cutoff; less robust in deep-discharge scenarios. | Choose if footprint compatibility is critical and system already implements independent low-VIN detection. |
Compared with MCP1700-3302E/TO and TCS2117-330IDBVR, the CAT6217-330TDGT3 uniquely combines low-noise BYP functionality, zero shutdown current, and factory-trimmed 1% accuracy - making it optimal for compact, battery-sensitive designs demanding both precision and quiet operation.
Availability
CAT6217-330TDGT3 is available at Aetrix Electronics and suitable for cellular phones, portable medical monitors, and IoT edge sensor nodes requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for CAT6217-330TDGT3 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 power systems.
The CAT6217 series belongs to onsemi's precision CMOS LDO portfolio, engineered specifically for battery-powered portable electronics requiring ultra-low quiescent current, fast transient response, and minimal external component count.
FAQ
What is the output voltage tolerance of the CAT6217-330TDGT3 over temperature?
The CAT6217-330TDGT3 maintains ±2.0% output voltage accuracy across the full −40 °C to +125 °C junction temperature range. This specification applies because its nominal output is 3.3 V (≥2.0 V), and the device uses a trimmed bandgap reference with low temperature coefficient (40 ppm/°C typical). The CAT6217-330TDGT3 achieves this stability without requiring external compensation or calibration.
Can the CAT6217-330TDGT3 operate with an input voltage lower than 2.3 V?
No - the CAT6217-330TDGT3 has a recommended minimum input voltage of 2.3 V and incorporates an under-voltage lockout (UVLO) circuit that disables regulation when VIN drops below 2.1 V typical. Attempting to operate below 2.3 V risks unstable output or complete shutdown; the device is not characterized or guaranteed for operation below this limit.
Is an external bypass capacitor required for the CAT6217-330TDGT3 to function?
No - the CAT6217-330TDGT3 operates fully functional without the 10 nF bypass capacitor on the BYP pin. That capacitor is optional and used solely to improve PSRR and reduce output noise. The CAT6217-330TDGT3 delivers specified performance (including 150 µs turn-on time and 45 µVRMS noise without BYP) using only VIN, GND, EN, and VOUT connections.
What is the maximum allowable power dissipation for the CAT6217-330TDGT3 in TSOT-23-5 package?
The CAT6217-330TDGT3 has a thermal resistance θJA of 235 °C/W. Maximum allowable power dissipation depends on ambient temperature: PDmax = (150 °C − TA) / 235 °C/W. At 25 °C ambient, this yields ~532 mW - but internal thermal shutdown at 160 °C limits practical dissipation well below that value. Derating is required above 25 °C.
Does the CAT6217-330TDGT3 require a minimum load current to maintain regulation?
No - the CAT6217-330TDGT3 regulates stably from zero load to full 150 mA. Its ground current rises only from 55 µA (no load) to 80 µA (full load), and output voltage remains within ±1% accuracy across the entire load range. No minimum load resistor is needed, simplifying design for intermittent-use applications.
CAT6217-330TDGT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.15V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- -
- PSRR:
- 64dB ~ 54dB (1kHz ~ 20kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
CAT6217-330TDGT3 FAQ
1.How can I place an order for CAT6217-330TDGT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for CAT6217-330TDGT3 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 CAT6217-330TDGT3 reliable?
The price and inventory of CAT6217-330TDGT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CAT6217-330TDGT3 is usually 5 days.
3.What payment methods are accepted for CAT6217-330TDGT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CAT6217-330TDGT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CAT6217-330TDGT3?
CAT6217-330TDGT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CAT6217-330TDGT3 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 CAT6217-330TDGT3?
For technical support, including CAT6217-330TDGT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CAT6217-330TDGT3 requirements.
6.How does Aetrix verify that CAT6217-330TDGT3 is sourced from the original manufacturer or authorized distributors?
All CAT6217-330TDGT3 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 CAT6217-330TDGT3 meets industry standards.
7.What is the process for return or replacement of CAT6217-330TDGT3?
All CAT6217-330TDGT3 units undergo pre-shipment inspection (PSI). If there is an issue with CAT6217-330TDGT3, 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 CAT6217-330TDGT3 part is unused and in its original packaging.
Return procedure for CAT6217-330TDGT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CAT6217-330TDGT3 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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…
