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Analog Devices Inc. LTC1986ES6#TRMPBF
- Part No.:
- LTC1986ES6#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC1986ES6#TRMPBF.pdf
- Description:
- IC REG CHARGE PUMP PROG TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,363
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Product details
Overview
LTC1986ES6#TRMPBF from Analog Devices (formerly Linear Technology) is a micropower charge pump DC/DC converter designed specifically for GSM/PCS/DCS SIM card power supply. It delivers regulated 5V output or direct VIN-to-VOUT connection for 3V SIMs, operates from 2.6V–4.4V input, supplies up to 10mA, and features 900kHz switching frequency and 14µA no-load operating current.
For engineers reviewing the LTC1986ES6#TRMPBF datasheet, LTC1986ES6#TRMPBF pinout, LTC1986ES6#TRMPBF application, or LTC1986ES6#TRMPBF equivalent, this page provides verified functional mode behavior, validated 3V/5V SIM VCC compliance, confirmed ThinSOT-23 package mapping, and real-world efficiency vs. load data at TA = 25°C.
Technical Context
The LTC1986ES6#TRMPBF implements a two-phase nonoverlapping charge pump architecture with burst-mode regulation to maintain output voltage stability across varying loads. Its MODE pin uses three VIN-referenced thresholds (shutdown: VMODE < VIN/2 – 0.1V; 5V mode: VIN/2 + 0.1V < VMODE < VIN – 1V; 3V mode: VMODE > VIN – 0.25V) to select between shutdown, direct-connect, or boost-regulated operation.
In 3V mode, it combines a low-RDS(ON) 2.5Ω internal switch (for VIN ≥ 2.85V) with automatic 2.9V regulated boost (for VIN < 2.85V), ensuring continuous compliance with 3V SIM VCC specification (2.7V–3.3V). Protection includes undervoltage lockout (1.4V), soft-start limiting inrush to <200mA, thermal shutdown (165°C), and indefinite short-circuit tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.6V to 4.4V - supports single-cell Li-ion and NiMH battery discharge profiles without brownout. |
| VOUT Options | 5V (regulated) or VIN (direct connect) - enables dual-voltage SIM support from one IC. |
| Output Current | 10mA - sufficient for standard 3V/5V SIM cards per ISO/IEC 7816-3. |
| Operating Current | 14µA typical (5V mode, no load) - minimizes battery drain in standby. |
| Shutdown Current | <1µA - ensures negligible leakage during host sleep states. |
| Switching Frequency | 900kHz - enables use of small 0.047µF flying capacitor and compact 2.2µF output capacitor. |
| 3V Mode RON | 2.5Ω - limits dropout to <25mV at 10mA, preserving VCC margin. |
Pinout & Package
The LTC1986ES6#TRMPBF is housed in a 6-lead Plastic TSOT-23 (ThinSOT) package, 1.0mm max height, footprint compatible with industry-standard SOT-23 layouts. Pin 1 (VOUT) is marked by a dot or beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Charge pump output | Delivers regulated 5V or direct VIN; pulled to GND during shutdown; requires ≥2.2µF low-ESR ceramic bypass. |
| GND (Pin 2) | Power ground reference | Must connect to low-impedance ground plane to minimize noise and ensure stable regulation. |
| MODE (Pin 3) | Mode selection control | Voltage-referenced input determining shutdown/3V/5V operation; threshold set relative to VIN. |
| C1– (Pin 4) | Flying capacitor negative terminal | Completes charge pump capacitor loop; connects to negative side of 0.047µF ceramic C1. |
| C1+ (Pin 5) | Flying capacitor positive terminal | Connects to positive side of 0.047µF ceramic C1; critical for charge transfer timing. |
| VIN (Pin 6) | Input supply | Accepts 2.6V–4.4V; requires ≥0.1µF low-ESR ceramic bypass to suppress input ripple. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 14µA typical in 5V mode enables >1-year battery life in low-duty-cycle portable devices. |
| 3V SIM boost regulation | Maintains 2.9V ±0.15V output when VIN drops below 2.85V, guaranteeing SIM VCC spec compliance under battery sag. |
| No inductors required | Capacitive charge pump topology eliminates EMI-sensitive magnetics and reduces BOM count to just three external capacitors. |
| Short-circuit protected | Withstands indefinite VOUT-to-GND fault without damage or latch-up, simplifying system-level fault handling. |
| Soft-start inrush limiting | Enables safe power-up into loaded SIM card capacitance by gating main switch with 50Ω series path until VOUT reaches VIN/2. |
Applications
| GSM Cellular Telephones | PCS/DCS Cellular Telephones |
|---|---|
Use Scenario: Powering 3V or 5V SIM cards in dual-band GSM handsets with single-cell Li-ion battery. IC Role / Device Role / Timing Role: Dedicated SIM VCC supply generator with mode-selectable output voltage and battery-sag compensation. Use Value: Eliminates need for separate LDOs or discrete switching regulators, reducing PCB area to <0.045in² while meeting ETSI RF emission limits. | Use Scenario: Providing compliant VCC to SIM modules in PCS/DCS handsets operating across wide temperature ranges (–40°C to +85°C). IC Role / Device Role / Timing Role: Micropower SIM supply with guaranteed performance over full industrial temperature range and thermal shutdown recovery. Use Value: Ensures uninterrupted SIM communication during thermal stress events without requiring external thermal monitoring circuitry. |
| Portable POS Terminals | Secure Smart Card Readers |
Use Scenario: Enabling contact-based payment card authentication in handheld point-of-sale terminals powered by rechargeable batteries. IC Role / Device Role / Timing Role: Low-noise, high-efficiency SIM power source supporting ISO/IEC 7816-3 clocked protocols. Use Value: Delivers clean 5V or 3V VCC with <75mVP-P ripple at 10mA, preventing protocol errors during card reset and data exchange. | Use Scenario: Supplying certified VCC to EMV-compliant smart cards in access control readers with strict ESD immunity requirements. IC Role / Device Role / Timing Role: Primary SIM power IC with integrated short-circuit and thermal protection, used alongside level translators like LTC1755. Use Value: Reduces failure risk during hot-plug insertion by limiting inrush current and providing active VOUT pull-down during mode transitions. |
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 | Higher 50mA output current; 13µA shutdown current; same 5V regulated output. | Targeted at multi-SIM or higher-current peripherals; larger 6-lead SOT-23 footprint but not pin-compatible. | Select LTC1754-5 only if >10mA SIM load or concurrent peripheral powering is required. |
| LTC1517 | Lower 6µA operating current; 5V-only output; no 3V direct-connect or boost mode. | Designed for fixed 5V SIMs only; lacks VIN-referenced MODE logic and 2.9V boost capability. | Choose LTC1517 only for cost-sensitive 5V-only designs where 3V SIM support is unnecessary. |
Compared with LTC1986ES6#TRMPBF, LTC1754-5 offers higher drive capability but requires layout changes and lacks 3V mode flexibility, while LTC1517 reduces quiescent current but sacrifices dual-voltage SIM compatibility and battery-sag resilience.
Availability
LTC1986ES6#TRMPBF is available at Aetrix Electronics and suitable for GSM cellular telephones, portable POS terminals, and secure smart card readers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC1986ES6#TRMPBF 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 product lines. Linear was founded in 1981 and specialized in high-performance linear ICs for demanding applications.
The LTC1986ES6#TRMPBF belongs to Linear's SIM power supply product line, engineered specifically to meet ISO/IEC 7816-3 VCC requirements for 3V and 5V smart cards in space-constrained, battery-powered wireless devices.
FAQ
What is the primary function of the LTC1986ES6#TRMPBF in a GSM handset?
The LTC1986ES6#TRMPBF serves as the dedicated SIM card power supply, generating either a regulated 5V output or directly connecting VIN to VOUT for 3V SIMs. Its 2.9V boost mode ensures continuous compliance with the 3V SIM VCC specification (2.7V–3.3V) even when battery voltage sags below 2.85V - a critical feature for reliable SIM operation in real-world GSM handset use cases.
Does the LTC1986ES6#TRMPBF require external inductors?
No, the LTC1986ES6#TRMPBF uses a capacitor-based charge pump topology and requires no inductors. It operates with only three external components: a 0.047µF flying capacitor (C1), a 0.1µF input capacitor (CIN), and a 2.2µF output capacitor (COUT). This eliminates magnetic EMI concerns and reduces total solution size to less than 0.045in² - a key advantage for ultra-thin mobile designs.
How does the MODE pin determine operating mode on the LTC1986ES6#TRMPBF?
The MODE pin on the LTC1986ES6#TRMPBF uses three VIN-referenced voltage thresholds: 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. These thresholds allow robust mode selection across the full 2.6V–4.4V input range without external voltage references or precision resistors.
What protection features are built into the LTC1986ES6#TRMPBF?
The LTC1986ES6#TRMPBF integrates undervoltage lockout (1.4V), soft-start inrush limiting (<200mA), thermal shutdown (165°C), and indefinite short-circuit protection. During shutdown, it actively pulls VOUT to GND via an internal switch. These features eliminate the need for external protection circuitry and ensure reliable operation in harsh or fault-prone environments like portable consumer electronics.
Is the LTC1986ES6#TRMPBF compatible with industrial temperature requirements?
Yes, the LTC1986ES6#TRMPBF is specified for operation from –40°C to +85°C. While the 'E' grade is guaranteed over 0°C to 70°C, full –40°C to +85°C performance is assured by design, characterization, and statistical process controls - making the LTC1986ES6#TRMPBF suitable for industrial-grade portable equipment including ruggedized POS terminals and secure access devices.
LTC1986ES6#TRMPBF 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#TRMPBF FAQ
1.How can I place an order for LTC1986ES6#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1986ES6#TRMPBF 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#TRMPBF reliable?
The price and inventory of LTC1986ES6#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1986ES6#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC1986ES6#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1986ES6#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1986ES6#TRMPBF?
LTC1986ES6#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1986ES6#TRMPBF 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#TRMPBF?
For technical support, including LTC1986ES6#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1986ES6#TRMPBF requirements.
6.How does Aetrix verify that LTC1986ES6#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC1986ES6#TRMPBF 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#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC1986ES6#TRMPBF?
All LTC1986ES6#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1986ES6#TRMPBF, 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#TRMPBF part is unused and in its original packaging.
Return procedure for LTC1986ES6#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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