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STMicroelectronics ST619LBDR
- Part No.:
- ST619LBDR
- Manufacturer:
- STMicroelectronics
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ST619LBDR.pdf
- Description:
- IC REG CHARGE PUMP 5V 30MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,293
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Product details
Overview
ST619LBDR from STMicroelectronics is a regulated 5 V ±4 % charge pump DC-DC converter designed for low-noise, inductorless voltage boosting in battery-powered systems. It delivers up to 30 mA output current over temperature (VI ≥ 3 V), operates from 2 V to 3.6 V input (two-cell alkaline/NiMH), and features logic-controlled shutdown with ≤1 µA supply current. Used in portable medical sensors and handheld instrumentation where EMI-sensitive analog front-ends require clean 5 V rails.
For engineers reviewing the ST619LBDR datasheet, ST619LBDR pinout, ST619LBDR application, or ST619LBDR equivalent, key selection criteria include guaranteed output current vs. input voltage, shutdown load isolation behavior, charge pump mode switching (doubler/triple/2.5×), ripple performance under dynamic load, and SO-8 thermal resistance (160 °C/W).
Technical Context
The ST619LBDR implements a pulse-skipping regulated charge pump architecture that dynamically selects voltage-doubling (VI = 3.0–3.6 V), voltage-tripling (VI = 2.0–2.5 V), or alternating-mode (VI = 2.5–3.0 V) operation to maintain 5 V ±4 % regulation across its 2–3.6 V input range. Internal circuitry is powered from the higher of VI or VO to maximize efficiency.
It uses four external capacitors: two 0.22 µF flying caps (C1/C2) and two 10 µF bulk caps (C3/C4). Shutdown disconnects OUT from IN via internal CMOS switches, reducing supply current to 0.02 µA typical and forcing VO to 0 V. Oscillation frequency is nominally 500 kHz at full load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | 5 V ±4 % - ensures stable 5 V rail for MCU peripherals and analog ICs without LDO post-regulation |
| Max output current | 30 mA @ VI ≥ 3 V - supports moderate-current loads like LCD bias, op-amp supplies, or sensor excitation |
| Input voltage range | 2 V to 3.6 V - matches two-cell alkaline, NiMH, or Li-ion single-cell configurations |
| Shutdown current | ≤1 µA max - enables multi-year battery life in always-on sensing nodes with periodic wake-up |
| Switching frequency | 500 kHz nominal - allows use of small ceramic capacitors and minimizes EMI filtering complexity |
| Efficiency | 80 % @ VI = 2 V, IO = 20 mA - sustains usable runtime even at end-of-battery discharge |
| Output ripple | 100 mV max - meets noise requirements for non-critical analog circuits without additional filtering |
Pinout & Package
ST619LBDR is housed in an SO-8 package (ECOPACK®, lead-free, JEDEC-standard 1.27 mm pitch), with exposed pad not connected internally. Thermal resistance junction-to-ambient is 160 °C/W under standard PCB layout conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 C1+ | Positive flying capacitor terminal | Connects to +ve side of first 0.22 µF charge pump capacitor; critical path for energy transfer timing |
| 2 IN | Input supply voltage | Main power input (2–3.6 V); also powers internal logic when VO < VI |
| 3 OUT | Regulated 5 V output | Delivers regulated 5 V; pulled to 0 V during shutdown via internal switch disconnect |
| 4 C2+ | Positive flying capacitor terminal | Connects to +ve side of second 0.22 µF flying cap; used in both doubler and triple modes |
| 5 C2− | Negative flying capacitor terminal | Common node between C2 and internal S2 switches; referenced to GND during charge phase |
| 6 GND | Ground reference | Primary return path for input, output, and internal oscillator; requires low-impedance PCB plane |
| 7 SHDN | Active-high shutdown control | CMOS-compatible input; tie to GND for normal operation; >0.7VI threshold ensures robust noise immunity |
| 8 C1− | Negative flying capacitor terminal | Common node between C1 and internal S1 switches; forms series stack with C2 in triple mode |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor topology | Eliminates magnetic EMI sources and board space for inductors-ideal for compact, noise-sensitive layouts |
| Dynamic mode switching | Automatically selects doubler/triple/2.5× pumping based on input voltage to sustain regulation and efficiency |
| Load-disconnect shutdown | Internally isolates OUT from IN during shutdown-prevents battery drain through downstream circuitry |
| Low quiescent current | 200 µA typical no-load supply current extends battery life in intermittent-use applications |
| Capacitor-optimized design | Specified for standard 0.22 µF ceramic flying caps and 10 µF bulk caps-reduces BOM cost and sourcing complexity |
Applications
| Portable Medical Sensors | Handheld Test Instruments |
|---|---|
Use Scenario: Battery-powered glucose meter with analog signal chain requiring clean 5 V for ADC reference and op-amp bias. IC Role / Device Role / Timing Role: Regulated 5 V charge pump supplying precision analog subsystem; replaces inductor-based converters to reduce EMI near sensitive bio-signal paths. Use Value: 100 mV ripple and 80 % efficiency at 2 V input enable accurate 16-bit ADC conversion without added filtering or power loss. | Use Scenario: Pocket-sized multimeter using two AA cells, needing stable 5 V for microcontroller, display driver, and measurement front-end. IC Role / Device Role / Timing Role: Primary voltage booster delivering regulated 5 V from decaying battery stack; shutdown mode preserves battery during idle periods. Use Value: 30 mA output capability at 3 V input supports simultaneous LCD backlight and MCU operation; SO-8 footprint simplifies layout in tight enclosures. |
| Wireless Sensor Nodes | Industrial Hand Scanners |
Use Scenario: Zigbee-enabled temperature node operating on two AA batteries, transmitting data every 60 seconds. IC Role / Device Role / Timing Role: Power management IC generating 5 V for RF transceiver and sensor interface during brief active bursts. Use Value: ≤1 µA shutdown current enables >5-year battery life; fast start-up (<100 µs) ensures minimal delay before transmission. | Use Scenario: Rugged barcode scanner powered by rechargeable NiMH pack, requiring reliable 5 V for laser diode driver and image sensor. IC Role / Device Role / Timing Role: Voltage booster maintaining 5 V output as battery discharges from 3.6 V to 2.0 V during field use. Use Value: Dynamic mode switching sustains regulation across full battery range without manual configuration or external feedback. |
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 |
|---|---|---|---|
| MAX680ESA+ | Unregulated 2× charge pump; fixed 2× multiplication; no shutdown; 100 mA output | Requires external LDO for regulation; higher output current but no voltage accuracy guarantee | Select when cost and simplicity outweigh need for tight output tolerance and shutdown control |
| TPS60403DBVR | Regulated 5 V ±3.5 %; 60 mA output; 1 µA shutdown; requires 1 µF flying caps | Higher output current and tighter regulation, but larger flying caps increase board area and cost | Select when >30 mA load or sub-4 % tolerance is required; verify SO-8 thermal derating at full load |
Compared with MAX680ESA+ and TPS60403DBVR, the ST619LBDR offers optimal balance of regulation accuracy (±4 %), ultra-low shutdown current (≤1 µA), and minimal external component count (0.22 µF caps), making it ideal for space-constrained, long-life battery applications where moderate current suffices.
Availability
ST619LBDR is available at Aetrix Electronics and suitable for portable medical sensors, handheld test instruments, wireless sensor nodes, and industrial hand scanners requiring stable component supply with consistent SO-8 packaging and ECOPACK® compliance.
Supply support for ST619LBDR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and analog devices for industrial, automotive, and consumer markets.
The ST619LBDR belongs to ST's legacy charge pump DC-DC converter product line, engineered specifically for low-EMI, inductorless voltage boosting in space- and noise-constrained portable electronics.
FAQ
What is the minimum input voltage required for ST619LBDR to regulate 5 V output?
The ST619LBDR maintains 5 V ±4 % regulation down to 2.0 V input across its full operating temperature range (−40 °C to +85 °C). At 2.0 V input, it guarantees 20 mA output current and achieves ~80 % efficiency at 20 mA load. Below 2.0 V, regulation is not assured and output voltage drops proportionally.
Can ST619LBDR drive a 100 mA load?
No. The ST619LBDR is rated for 30 mA continuous output current at VI ≥ 3 V and 20 mA at VI ≥ 2 V. Absolute maximum output current is 120 mA, but operation beyond 30 mA causes output voltage droop outside ±4 % regulation and risks thermal overload in SO-8 package due to limited heat dissipation (RthJA = 160 °C/W).
Is an external feedback resistor network required for output voltage setting?
No. The ST619LBDR integrates internal voltage regulation via a pulse-skipping controller and requires no external feedback components. Output voltage is factory-trimmed to 5 V ±4 % and remains fixed regardless of input voltage or load within specified operating conditions.
How does the SHDN pin behave during power-up?
The SHDN pin is CMOS-compatible and must be held ≤0.4 V (logic low) relative to GND for normal operation. During power-up, if SHDN rises above 0.7×VI before IN stabilizes, the device may enter shutdown until SHDN is actively pulled low. A pull-down resistor (e.g., 100 kΩ to GND) is recommended to ensure reliable startup.
ST619LBDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 3.6V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 30mA
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ST619LBDR FAQ
1.How can I place an order for ST619LBDR through Aetrix?
Please submit a Request for Quotation (RFQ) for ST619LBDR 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 ST619LBDR reliable?
The price and inventory of ST619LBDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST619LBDR is usually 5 days.
3.What payment methods are accepted for ST619LBDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST619LBDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST619LBDR?
ST619LBDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST619LBDR 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 ST619LBDR?
For technical support, including ST619LBDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST619LBDR requirements.
6.How does Aetrix verify that ST619LBDR is sourced from the original manufacturer or authorized distributors?
All ST619LBDR 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 ST619LBDR meets industry standards.
7.What is the process for return or replacement of ST619LBDR?
All ST619LBDR units undergo pre-shipment inspection (PSI). If there is an issue with ST619LBDR, 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 ST619LBDR part is unused and in its original packaging.
Return procedure for ST619LBDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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