My Inquiry
My Account
onsemi CAT6217-285TDGT3
- Part No.:
- CAT6217-285TDGT3
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
CAT6217-285TDGT3.pdf
- Description:
- IC REG LDO 2.85V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:129,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CAT6217-285TDGT3 from onsemi is a 150 mA CMOS low dropout regulator with 2.85 V fixed output, 90 mV typical dropout at full load, ±1.0% initial accuracy, and stable operation using only a 1 µF ceramic output capacitor. It delivers fast transient response in battery-powered portable electronics requiring clean, regulated voltage from 2.3 V to 5.5 V input.
For engineers reviewing the CAT6217-285TDGT3 datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed 150 mA output, zero shutdown current, quick-start bypass capability (10 nF), thermal/short-circuit protection, and TSOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The CAT6217-285TDGT3 integrates a precision bandgap reference, low-noise error amplifier, and PMOS pass transistor to achieve 90 mV dropout at 150 mA while maintaining ±1.0% initial output accuracy over line, load, and temperature. Its internal UVLO disables output below 2.1 V, and the 2.5 MΩ EN pull-down ensures safe default-off behavior.
It supports noise-sensitive analog rails via the dedicated BYP pin-accepting a 10 nF capacitor to improve PSRR by up to 10 dB at 20 kHz-and features a 150 µs turn-on time independent of bypass capacitance, enabling rapid power sequencing in multi-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.85 V ±1.0% initial accuracy ensures stable bias for RF front-ends or ADC references without external feedback. |
| Max Output Current | 150 mA guaranteed delivery supports microcontrollers, sensors, or Bluetooth SoCs without thermal derating in TSOT-23-5. |
| Dropout Voltage | 90 mV typical at 150 mA enables regulation from 2.94 V input-critical for single-cell Li-ion or Li-poly systems. |
| Ground Current | 55 µA no-load / 80 µA full-load minimizes quiescent drain in always-on battery monitoring circuits. |
| Output Capacitor | Stable with ≥1 µF ceramic (ESR 5–500 mΩ) reduces BOM count and board area vs. tantalum-based LDOs. |
| PSRR @ 1 kHz | 64 dB with 10 nF BYP capacitor suppresses switching noise from DC-DC converters feeding the LDO input. |
| Enable Threshold | Logic-high active at ≥1.6 V over full temp range allows direct interfacing with 1.8 V or 3.3 V GPIOs. |
Pinout & Package
The CAT6217-285TDGT3 is housed in a 5-lead TSOT-23 package (Case 419AE), 1 mm max height, Pb-free/RoHS-compliant, with exposed pad for thermal enhancement.
| 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 | Power ground reference | Must connect directly to low-impedance PCB ground plane; shared return path for all currents. |
| EN | Active-high enable control | Internal 2.5 MΩ pull-down ensures default disable; driven high (>1.6 V) to activate regulator output. |
| BYP | Reference bypass node | Connects optional 10 nF capacitor to GND to reduce output noise and boost PSRR above 10 kHz. |
| VOUT | Regulated output terminal | Delivers 2.85 V ±1.0%; supports 150 mA load; includes internal 250 Ω discharge switch in shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Quick-start bypass architecture | Enables 150 µs turn-on with 10 nF BYP cap-no trade-off between noise reduction and startup speed. |
| Zero shutdown current | 1 µA max shutdown ground current preserves battery life in long-duration sleep modes. |
| Thermal + short-circuit protection | Auto-shutdown at 160 °C with 10 °C hysteresis and 350 mA current limit prevent damage during fault conditions. |
| UVLO with 2.1 V threshold | Prevents erratic output behavior during brown-out by disabling regulator before input drops below usable level. |
| Low-noise output | 45 µVRMS (10 Hz–100 kHz) supports precision analog signal chains without additional filtering. |
Applications
| Wireless Sensor Node Power | Portable Medical Monitor |
|---|---|
Use Scenario: Ultra-low-power IoT sensor node powered by coin cell or small Li-ion battery, operating intermittently with sub-µA sleep current. IC Role / Device Role / Timing Role: Primary 2.85 V supply for MCU, BLE radio, and analog front-end; enabled only during active sensing cycles. Use Value: 55 µA no-load ground current extends battery life; 150 µs fast turn-on enables precise timing of measurement windows. | Use Scenario: Handheld ECG or pulse oximeter requiring stable, low-noise analog supply for signal conditioning and ADC reference. IC Role / Device Role / Timing Role: Clean 2.85 V rail for op-amps and 12-bit SAR ADC; BYP pin decouples high-frequency noise from digital subsystems. Use Value: 45 µVRMS output noise and 64 dB PSRR ensure <1 LSB error in 12-bit conversion under noisy DC-DC input conditions. |
| Smartphone Camera Module | Wearable Fitness Tracker |
Use Scenario: Compact camera module with image sensor, ISP, and autofocus actuator-all requiring tightly regulated, low-noise voltage. IC Role / Device Role / Timing Role: Dedicated 2.85 V LDO for CIS analog core and PLL supply; sequenced via EN pin synchronized with sensor initialization. Use Value: 90 mV dropout allows operation down to 2.94 V input-maximizing usable capacity from aging single-cell batteries. | Use Scenario: Always-on wearable tracking device with motion sensor, heart-rate monitor, and Bluetooth LE transceiver. IC Role / Device Role / Timing Role: Main system rail for ultra-low-power MCU and sensor hub; disabled during deep-sleep to eliminate leakage. Use Value: "Zero" shutdown current (<1 µA) and guaranteed 150 mA output support burst-mode processing without voltage droop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-2802E/TO | 2.8 V output, 250 mA rating, higher 175 mV dropout at full load, no BYP pin | Lacks noise-reduction bypass capability; better suited for non-analog, higher-current digital loads | Select when higher output current is required and PSRR/noise performance is secondary |
| Torex XC6206P282MR-G | 2.8 V output, 150 mA, 160 mV dropout, no enable or thermal protection | No EN control or fault protection-requires external circuitry for sequencing or safety | Choose only for cost-sensitive, non-safety-critical applications where minimal feature set is acceptable |
Compared with MCP1700-2802E/TO and XC6206P282MR-G, the CAT6217-285TDGT3 uniquely combines low-noise operation (via BYP), fast enable response, and integrated protection-making it optimal for analog-intensive, battery-constrained designs where reliability and signal integrity are critical.
Availability
CAT6217-285TDGT3 is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, smartphone camera modules, and wearable fitness trackers requiring stable component supply across production volumes and lifecycle phases.
Supply support for CAT6217-285TDGT3 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The CAT6217 series belongs to onsemi's precision CMOS LDO portfolio, engineered specifically for ultra-low-power, noise-sensitive portable electronics where small size, fast transient response, and guaranteed output accuracy are mandatory.
FAQ
What is the output voltage tolerance of the CAT6217-285TDGT3 over temperature?
The CAT6217-285TDGT3 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 2.85 V (≥2.0 V), and the datasheet explicitly states ±2.0% accuracy over temperature for VOUT ≥ 2.0 V. The part achieves this via a trimmed bandgap reference and low-drift error amplifier design.
Does the CAT6217-285TDGT3 require an external bypass capacitor for basic operation?
No-the CAT6217-285TDGT3 operates stably without the 10 nF BYP capacitor. That capacitor is optional and used solely to reduce output noise and improve PSRR above 10 kHz. Basic regulation, transient response, and stability are fully achieved with only the required 1 µF ceramic output capacitor and proper VIN bypassing.
What is the minimum input voltage required for the CAT6217-285TDGT3 to maintain regulation at 150 mA load?
The CAT6217-285TDGT3 requires a minimum input voltage of 2.94 V to maintain 2.85 V output at 150 mA load. This is calculated from its 90 mV typical dropout voltage (2.85 V + 0.09 V = 2.94 V). The device will cease regulation if VIN falls below this value under full load, triggering UVLO if input drops further to ≤2.1 V.
How does the CAT6217-285TDGT3 handle output short-circuit conditions?
The CAT6217-285TDGT3 limits output short-circuit current to 350 mA typical when VOUT = 0 V. During sustained short-circuit, the device enters thermal shutdown at 160°C and remains latched off until junction temperature falls by 10°C hysteresis. This dual protection prevents damage while allowing automatic recovery after fault removal and cooling.
Is the CAT6217-285TDGT3 compatible with standard SMT reflow profiles?
Yes-the CAT6217-285TDGT3 in TSOT-23-5 package (Case 419AE) is rated for lead-free reflow with a maximum soldering temperature of 260°C for 5 seconds. Its RoHS-compliant, halogen-free construction meets IPC/JEDEC J-STD-020 moisture sensitivity level 1, permitting unlimited floor life and standard reflow without pre-baking.
CAT6217-285TDGT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.85V
- 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
CAT6217-285TDGT3 FAQ
1.How can I place an order for CAT6217-285TDGT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for CAT6217-285TDGT3 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 CAT6217-285TDGT3 reliable?
The price and inventory of CAT6217-285TDGT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CAT6217-285TDGT3 is usually 5 days.
3.What payment methods are accepted for CAT6217-285TDGT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CAT6217-285TDGT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CAT6217-285TDGT3?
CAT6217-285TDGT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CAT6217-285TDGT3 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 CAT6217-285TDGT3?
For technical support, including CAT6217-285TDGT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CAT6217-285TDGT3 requirements.
6.How does Aetrix verify that CAT6217-285TDGT3 is sourced from the original manufacturer or authorized distributors?
All CAT6217-285TDGT3 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 CAT6217-285TDGT3 meets industry standards.
7.What is the process for return or replacement of CAT6217-285TDGT3?
All CAT6217-285TDGT3 units undergo pre-shipment inspection (PSI). If there is an issue with CAT6217-285TDGT3, 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 CAT6217-285TDGT3 part is unused and in its original packaging.
Return procedure for CAT6217-285TDGT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CAT6217-285TDGT3 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…
