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Analog Devices Inc. LTC1986ES6#TRPBF
- Part No.:
- LTC1986ES6#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC1986ES6#TRPBF.pdf
- Description:
- IC REG CHARGE PUMP PROG TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,376
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Product details
Overview
LTC1986ES6#TRPBF from Analog Devices (formerly Linear Technology) is a micropower charge pump DC/DC converter designed specifically for 3V/5V SIM card power supply in GSM/PCS cellular handsets and portable POS terminals. It operates across 2.6V–4.4V input, delivers up to 10mA output, supports three modes (shutdown, VOUT = VIN, VOUT = 5V), and features 14µA typical operating current and 900kHz switching frequency.
For engineers reviewing the LTC1986ES6#TRPBF datasheet, LTC1986ES6#TRPBF pinout, LTC1986ES6#TRPBF application, or LTC1986ES6#TRPBF equivalent, key selection criteria include mode-select voltage thresholds, 2.5Ω VIN-to-VOUT switch resistance in 3V mode, regulated 2.9V boost capability below 2.85V VIN, thermal/short-circuit protection, and ThinSOT-6 footprint compatibility with space-constrained mobile designs.
Technical Context
The LTC1986ES6#TRPBF implements a dual-mode charge pump architecture: in 5V mode, it uses a 2-phase nonoverlapping 900kHz oscillator to stack C1 with VIN and regulate VOUT via internal 1.25V reference and hysteresis comparator; in 3V mode, it enables a low-RDS(ON) 2.5Ω switch between VIN and VOUT, with automatic transition to 2.9V regulated boost when VIN drops below 2.85V.
Mode selection is determined by precise VIN-referenced thresholds on the MODE pin: shutdown if VMODE < VIN/2 – 0.1V, 5V mode if VIN/2 + 0.1V < VMODE < VIN – 1V, and 3V mode if VMODE > VIN – 0.25V. Soft-start limits inrush current using a 50Ω series switch until VOUT reaches VIN/2, and undervoltage lockout engages below 1.4V VIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.6V to 4.4V - supports single-cell Li-ion/Li-poly battery discharge profile without brownout. |
| VOUT Options | Shutdown (0V), 3V mode (VIN or regulated 2.9V), 5V mode (4.75V–5.25V) - meets ISO/IEC 7816-3 SIM VCC specs. |
| Output Current | 10mA max - sufficient for standard 3V/5V SIM cards under active communication. |
| Operating Current | 14µA typical in 5V mode, 10–25µA in 3V mode - enables multi-year battery life in standby. |
| Shutdown Current | <1µA - minimizes leakage during host processor sleep cycles. |
| Switching Frequency | 900kHz - allows use of small 0.047µF flying capacitor and reduces EMI filtering burden. |
| On-Resistance (3V mode) | 2.5Ω typical - ensures ≤25mV drop at 10mA, preserving 3V SIM margin. |
Pinout & Package
The LTC1986ES6#TRPBF is housed in a 6-lead Plastic TSOT-23 (ThinSOT) package, 1.00mm max height, 2.90mm × 1.60mm footprint, JEDEC MO-193 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Charge pump output | Delivers regulated 5V or direct VIN (3V mode); must be bypassed with ≥2.2µF low-ESR ceramic capacitor. |
| GND (Pin 2) | Power ground | Primary return path; requires low-impedance connection to PCB ground plane for noise control. |
| MODE (Pin 3) | Mode select input | VIN-referenced digital control: sets shutdown/5V/3V operation via resistor divider or GPIO. |
| C1– (Pin 4) | Flying capacitor negative | Completes charge pump capacitor loop; connects to negative terminal of 0.047µF–0.22µF ceramic C1. |
| C1+ (Pin 5) | Flying capacitor positive | Completes charge pump capacitor loop; connects to positive terminal of flying capacitor. |
| VIN (Pin 6) | Input supply | Accepts 2.6V–4.4V battery input; requires ≥0.1µF low-ESR ceramic bypass to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 14µA typical in 5V mode enables >1-year battery life in intermittent-use SIM applications. |
| 3V mode VIN-to-VOUT switch | 2.5Ω RDS(ON) ensures minimal voltage drop and eliminates need for external LDO in 3V SIM paths. |
| Automatic 2.9V boost in 3V mode | Maintains SIM VCC compliance when VIN sags below 2.85V - critical for low-battery GSM handsets. |
| Integrated protection | Undervoltage lockout (1.4V), short-circuit survival (indefinite), thermal shutdown (165°C), and soft-start (50Ω inrush limiter). |
| Ultrasmall PCB area | <0.045in² total circuit area with 0.1µF CIN, 0.047µF C1, and 2.2µF COUT - fits ultra-thin mobile form factors. |
Applications
| GSM Cellular Handset | Portable POS Terminal |
|---|---|
Use Scenario: Powering 3V SIM card during call setup and data transmission in compact dual-SIM smartphones. IC Role / Device Role / Timing Role: Primary SIM VCC regulator with dynamic mode switching between direct VIN feed and 2.9V boost based on battery voltage. Use Value: Eliminates need for discrete LDO + enable logic; maintains SIM compliance down to 2.6V battery, extending usable runtime. | Use Scenario: Providing stable 5V SIM supply in handheld credit card readers powered by coin-cell or rechargeable Li-ion. IC Role / Device Role / Timing Role: Charge pump DC/DC converter delivering regulated 5V output with <1µA shutdown current during idle periods. Use Value: Enables >2-year shelf life on primary battery; 900kHz switching allows miniature 0.047µF flying capacitor. |
| PCS/DCS Dual-Band Phone | Secure Identity Token |
Use Scenario: Supporting simultaneous 3V and 5V SIM operation in legacy roaming-capable handsets with dual-SIM controllers. IC Role / Device Role / Timing Role: Dual-mode power source selectable per SIM slot via independent MODE pins driven by baseband processor. Use Value: Reduces BOM count vs. two separate regulators; shared flying capacitor saves board space in tight RF modules. | Use Scenario: Powering EMV-compliant smart card interface in USB/NFC-enabled authentication tokens. IC Role / Device Role / Timing Role: Low-noise, thermally robust SIM supply with guaranteed short-circuit survival during hot-plug events. Use Value: Meets IEC 61000-4-2 Level 4 ESD immunity requirements without external TVS; 125°C TJMAX ensures reliability in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SIM power supply applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1754-5 | 50mA output current, higher 13µA quiescent current, no 3V mode or VIN-to-VOUT switch. | Targeted at high-current 5V SIMs only; lacks 3V SIM support and automatic low-VIN boost. | Choose LTC1754-5 only if >10mA load or lower cost is prioritized over 3V SIM compatibility. |
| LTC1517 | 6µA quiescent current, 5V-only output, 5-pin ThinSOT package, no MODE pin or 3V mode. | Optimized for ultra-low-power 5V SIMs where 3V operation is unnecessary. | Select LTC1517 when minimizing standby current is critical and system uses 5V SIM exclusively. |
Compared with LTC1986ES6#TRPBF, LTC1754-5 offers higher output drive but sacrifices 3V SIM support and low-VIN boost; LTC1517 achieves lower quiescent current but lacks mode flexibility and integrated protection features like UVLO and thermal shutdown.
Availability
LTC1986ES6#TRPBF is available at Aetrix Electronics and suitable for GSM cellular telephones, portable POS terminals, and PCS/DCS dual-band phones requiring stable component supply, long battery life, and compact SIM power solutions.
Supply support for LTC1986ES6#TRPBF 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
Analog Devices acquired Linear Technology in 2017 and maintains its precision analog and power management portfolio, serving automotive, industrial, communications, and medical markets with high-reliability ICs.
The LTC1986ES6#TRPBF belongs to Linear's SIM power supply product line, engineered specifically for space-constrained, battery-powered wireless devices needing dual-voltage (3V/5V) smart card regulation with minimal external components.
FAQ
What is the exact input voltage range supported by the LTC1986ES6#TRPBF?
The LTC1986ES6#TRPBF supports an input voltage range of 2.6V to 4.4V. This range accommodates the full discharge curve of single-cell lithium-ion or lithium-polymer batteries while maintaining regulation in both 3V and 5V modes. Below 2.6V, undervoltage lockout disables operation to prevent malfunction.
How does the LTC1986ES6#TRPBF handle low-input-voltage conditions in 3V mode?
In 3V mode, the LTC1986ES6#TRPBF automatically transitions from direct VIN-to-VOUT connection to regulated 2.9V boost when VIN drops below 2.85V. This ensures continuous compliance with the 3V SIM card VCC specification (2.7V–3.3V) even during deep battery discharge or transient sags, without requiring external circuitry.
What are the MODE pin voltage thresholds for each operating mode of the LTC1986ES6#TRPBF?
The MODE pin thresholds are VIN-referenced: shutdown if VMODE < VIN/2 – 0.1V, 5V mode if VIN/2 + 0.1V < VMODE < VIN – 1V, and 3V mode if VMODE > VIN – 0.25V. For VIN = 3V, this translates to shutdown (0–1.4V), 5V mode (1.6–2.0V), and 3V mode (2.75–3.0V), enabling robust digital control via microcontroller GPIOs.
Does the LTC1986ES6#TRPBF provide short-circuit protection, and what is its behavior during fault conditions?
Yes, the LTC1986ES6#TRPBF provides indefinite short-circuit protection on the VOUT pin. During a VOUT-to-GND short, internal current limiting engages, and the device sustains operation without damage. It also includes thermal shutdown that activates at 165°C junction temperature and recovers automatically at 150°C, ensuring safe operation under sustained overload.
What external components are required for basic operation of the LTC1986ES6#TRPBF?
The LTC1986ES6#TRPBF requires only three external capacitors: a 0.1µF ceramic capacitor on VIN, a 0.047µF ceramic flying capacitor (C1) between C1+ and C1–, and a 2.2µF low-ESR ceramic capacitor on VOUT. No inductors or resistors are needed for core functionality, enabling a total solution area under 0.045in².
LTC1986ES6#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.6V
- Voltage - Input (Max):
- 4.4V
- Voltage - Output (Min/Fixed):
- 3V, 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10mA
- Frequency - Switching:
- 900kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LTC1986ES6#TRPBF FAQ
1.How can I place an order for LTC1986ES6#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1986ES6#TRPBF 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 LTC1986ES6#TRPBF reliable?
The price and inventory of LTC1986ES6#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1986ES6#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1986ES6#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1986ES6#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1986ES6#TRPBF?
LTC1986ES6#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1986ES6#TRPBF 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 LTC1986ES6#TRPBF?
For technical support, including LTC1986ES6#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1986ES6#TRPBF requirements.
6.How does Aetrix verify that LTC1986ES6#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1986ES6#TRPBF 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 LTC1986ES6#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1986ES6#TRPBF?
All LTC1986ES6#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1986ES6#TRPBF, 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 LTC1986ES6#TRPBF part is unused and in its original packaging.
Return procedure for LTC1986ES6#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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