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Analog Devices Inc. LTC1754ES6-5#TRMPBF
- Part No.:
- LTC1754ES6-5#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-6
- Datasheet:
-
LTC1754ES6-5#TRMPBF.pdf
- Description:
- IC REG CHRG PUMP 5V 50MA TSOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,610
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Product details
Overview
LTC1754ES6-5#TRMPBF from Analog Devices (formerly Linear Technology) is a micropower regulated 5V charge pump DC/DC converter in a 6-pin SOT-23 package. It delivers up to 50mA output current at VIN ≥ 3.0V, maintains ±4% output regulation, draws only 13µA quiescent current, and features internal 600kHz oscillator and shutdown disconnect. It is used in GSM SIM interface supplies and Li-ion battery backup systems.
For engineers reviewing the LTC1754ES6-5#TRMPBF datasheet, LTC1754ES6-5#TRMPBF pinout, LTC1754ES6-5#TRMPBF application, or LTC1754ES6-5#TRMPBF equivalent, key selection criteria include input voltage range (2.7V–5.5V), regulated 5V ±4% output, 50mA load capability at ≥3.0V input, ultralow 13µA operating current, and thermal/short-circuit protection.
Technical Context
The LTC1754ES6-5#TRMPBF operates as a Burst Mode™ switched-capacitor voltage doubler with hysteresis-based regulation. It senses VOUT via an internal resistor divider and enables the charge pump when the attenuated output falls below the lower comparator trip point.
Its control architecture uses a free-running 600kHz oscillator to drive nonoverlapping clock phases for flying capacitor charging (phase 1) and series stacking with VIN (phase 2). Shutdown disconnects VOUT from VIN and reduces supply current to <1µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±4% - stable regulated rail for logic or analog circuitry requiring tight tolerance |
| Max Output Current | 50mA at VIN ≥ 3.0V - supports moderate-current peripherals like SIM cards or white LEDs |
| Input Voltage Range | 2.7V to 5.5V - compatible with single Li-ion (3.0–4.2V), 3-cell NiCd (3.6V), or USB 5V inputs |
| Quiescent Current | 13µA - enables multi-year battery life in always-on backup or low-duty-cycle applications |
| Shutdown Current | <1µA - ensures negligible drain during system sleep or standby modes |
| Oscillator Frequency | 600kHz - enables use of small 1µF ceramic flying capacitor and minimizes EMI filtering burden |
| Output Ripple | 65mVP-P at VIN = 3V, IOUT = 50mA - manageable with 10µF low-ESR output capacitor |
| Efficiency | 82.7% at VIN = 3V, IOUT = 50mA - exceeds linear regulators in step-up scenarios while avoiding inductor losses |
Pinout & Package
Package: 6-pin SOT-23 (S6), 2.80–3.00 mm × 1.90 mm × 1.02 mm, surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Regulated output | Delivers 5V ±4% to load; requires ≥6.8µF low-ESR bypass capacitor placed adjacent to pin |
| GND (Pin 2) | Power ground | Reference node for all internal circuits; must connect to solid ground plane for thermal and noise performance |
| SHDN (Pin 3) | Active-low enable | CMOS input with ~0.8V threshold; drives device into sub-1µA shutdown and disconnects VOUT from VIN |
| C– (Pin 4) | Flying capacitor negative | Connects to negative terminal of 1µF ceramic flying capacitor; critical path for charge transfer timing |
| VIN (Pin 5) | Input supply | Accepts 2.7–5.5V; requires ≥6.8µF low-ESR input capacitor to suppress inrush transients |
| C+ (Pin 6) | Flying capacitor positive | Connects to positive terminal of 1µF ceramic flying capacitor; forms charge pump switching node |
Key Features
| Feature | Design Value |
|---|---|
| No inductors required | Enables ultra-compact designs using only two external capacitors - ideal for space-constrained handhelds |
| Internal oscillator | 600kHz fixed frequency eliminates need for external timing components and simplifies layout |
| Short-circuit protection | Survives indefinite VOUT-to-GND short with automatic thermal cycling (150°C shutdown / 140°C restart) |
| Ultrasmall footprint | Total application area ≤ 0.052 in² (33.5 mm²) - fits within tight PCB real estate budgets |
| Load disconnect in shutdown | Prevents backfeed from VOUT to VIN, eliminating reverse current in battery backup configurations |
| Wide temperature operation | Specified from –40°C to 85°C - suitable for industrial and automotive-adjacent portable equipment |
Applications
| Smart Card Readers | GSM SIM Interface Supplies |
|---|---|
Use Scenario: Powering ISO 7816-compliant smart card interfaces in portable payment terminals or secure ID readers. IC Role / Device Role / Timing Role: Provides regulated 5V supply to card VCC pin during active communication, with fast turn-on (<400µs) and low-noise operation. Use Value: Meets ISO 7816-3 voltage tolerance (4.75–5.25V) and supports hot-plug detection without external supervision circuitry. | Use Scenario: Delivering stable 5V power to SIM card modules in dual-SIM GSM cellular handsets. IC Role / Device Role / Timing Role: Acts as dedicated SIM supply, isolated from noisy main PMIC rails and enabled only during call/data sessions. Use Value: Enables independent SIM power control and prevents cross-talk between RF and baseband sections via shutdown isolation. |
| Li-Ion Battery Backup Supplies | White LED Power Supplies |
Use Scenario: Providing fail-safe 5V backup to real-time clocks or memory retention circuits during main supply loss. IC Role / Device Role / Timing Role: Functions as autonomous backup regulator, activated by external supervisor or SHDN signal upon primary rail dropout. Use Value: Delivers 50mA at ≥3.0V input - sufficient for RTC + SRAM hold-up with >100-hour runtime on typical 100mAh coin cell. | Use Scenario: Driving 1–3 white/blue LEDs (3.0–3.6V forward) from a 3.0–4.2V Li-ion battery in portable medical or consumer devices. IC Role / Device Role / Timing Role: Serves as constant-voltage LED driver with inherent current limiting via output impedance and ripple-aware design. Use Value: Achieves >82% efficiency across battery discharge curve without requiring current-sense resistors or feedback loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar regulated charge pump applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1516ES6-5#TRMPBF | 12µA IQ, same 5V ±4% output, but rated for 50mA only at VIN ≥ 2.0V; no thermal shutdown | Lacks short-circuit and overtemperature protection - unsuitable for unattended or safety-critical backup rails | Choose LTC1516 only if lowest possible quiescent current is paramount and fault conditions are externally managed. |
| LTC1517-5ES6#TRMPBF | 6µA IQ, 20mA max output, 5V ±4% output, same SOT-23 package; includes thermal shutdown | Lower output current limits use to low-power sensors or microcontroller peripherals - not viable for SIM or LED loads | Select LTC1517-5 only for ultra-low-power sensor nodes where 20mA peak suffices and board space is identical. |
Compared with LTC1754ES6-5#TRMPBF, LTC1516 offers lower IQ but no fault protection, while LTC1517-5 provides superior IQ and protection at half the output current - making LTC1754ES6-5#TRMPBF the balanced choice for 50mA, protected, regulated 5V generation in portable systems.
Availability
LTC1754ES6-5#TRMPBF is available at Aetrix Electronics and suitable for GSM SIM interface supplies, Li-ion battery backup systems, and white LED drivers requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.
Supply support for LTC1754ES6-5#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 continues its legacy of high-performance analog and power management ICs.
The LTC1754ES6-5#TRMPBF belongs to Linear's micropower charge pump family, designed specifically for battery-powered portable electronics needing compact, efficient, and protected step-up voltage conversion without inductors.
FAQ
What is the minimum input voltage required for the LTC1754ES6-5#TRMPBF to deliver full 50mA output?
The LTC1754ES6-5#TRMPBF requires VIN ≥ 3.0V to sustain 50mA output current while maintaining 5V ±4% regulation. Below 3.0V, output current capability degrades - e.g., at VIN = 2.7V, maximum rated output drops to 25mA. This threshold is defined by internal charge pump headroom and regulation loop stability margins.
Does the LTC1754ES6-5#TRMPBF require external compensation components?
No, the LTC1754ES6-5#TRMPBF is internally compensated and requires no external compensation network. Its hysteresis-based regulation loop and fixed-frequency oscillator eliminate the need for loop compensation components - only three external capacitors (CIN, CFLY, COUT) are mandatory for operation.
Can the LTC1754ES6-5#TRMPBF be used with input voltages above 5.5V?
No. The absolute maximum VIN rating for the LTC1754ES6-5#TRMPBF is 6V, but the recommended operating range is strictly 2.7V to 5.5V. Operation above 5.5V violates specifications and risks permanent damage due to overstress of internal charge pump switches and reference circuitry.
How does the LTC1754ES6-5#TRMPBF behave during output short-circuit conditions?
During a VOUT-to-GND short, the LTC1754ES6-5#TRMPBF limits output current and cycles thermally: it draws ~150mA from VIN, heats up until junction temperature reaches ~150°C, shuts down, cools to ~140°C, then re-enables - repeating indefinitely without latchup or damage. This behavior is confirmed in the datasheet's "Short-Circuit/Thermal Protection" section.
Is the LTC1754ES6-5#TRMPBF pin-compatible with the LTC1754ES6-3.3#TRMPBF?
Yes - both LTC1754ES6-5#TRMPBF and LTC1754ES6-3.3#TRMPBF share identical 6-pin SOT-23 (S6) pinout, package dimensions, and terminal functions. They differ only in internal feedback resistor ratio and specified output voltage (5V vs 3.3V); no PCB redesign is needed when swapping between them in existing layouts.
LTC1754ES6-5#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 50mA
- Frequency - Switching:
- 700kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LTC1754ES6-5#TRMPBF FAQ
1.How can I place an order for LTC1754ES6-5#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1754ES6-5#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 LTC1754ES6-5#TRMPBF reliable?
The price and inventory of LTC1754ES6-5#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1754ES6-5#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC1754ES6-5#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1754ES6-5#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1754ES6-5#TRMPBF?
LTC1754ES6-5#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1754ES6-5#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 LTC1754ES6-5#TRMPBF?
For technical support, including LTC1754ES6-5#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1754ES6-5#TRMPBF requirements.
6.How does Aetrix verify that LTC1754ES6-5#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC1754ES6-5#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 LTC1754ES6-5#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC1754ES6-5#TRMPBF?
All LTC1754ES6-5#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1754ES6-5#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 LTC1754ES6-5#TRMPBF part is unused and in its original packaging.
Return procedure for LTC1754ES6-5#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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