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Analog Devices Inc. LTC3204BEDC-5#TRPBF
- Part No.:
- LTC3204BEDC-5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC3204BEDC-5#TRPBF.pdf
- Description:
- IC REG CHARGE PUMP 5V 150MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,268
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Product details
Overview
LTC3204BEDC-5#TRPBF from Analog Devices (formerly Linear Technology) is a fixed 5V, low-noise, constant-frequency switched-capacitor voltage doubler IC. It delivers up to 150mA output from 2.7V–5.5V input (e.g., single Li-Ion battery), operates at 1.2MHz switching frequency, features built-in soft-start and thermal/short-circuit protection, and targets compact, low-EMI power rails in portable USB OTG and LED driver applications.
For engineers reviewing the LTC3204BEDC-5#TRPBF datasheet, LTC3204BEDC-5#TRPBF pinout, LTC3204BEDC-5#TRPBF application, or LTC3204BEDC-5#TRPBF equivalent, key selection criteria include regulated 5V output capability under 2.7V min input, constant-frequency operation across all loads (no Burst Mode), shutdown current <1µA, 6-pin 2mm × 2mm DFN package with exposed GND pad, and compatibility with 2.2µF ceramic flying/output capacitors.
Technical Context
The LTC3204BEDC-5#TRPBF implements a 2-phase nonoverlapping 1.2MHz charge pump topology that stacks the flying capacitor in series with VIN to double and regulate output voltage. Regulation is achieved via internal resistor-divider feedback and error-amplifier-controlled pump current modulation - not PWM or hysteretic control.
Unlike the Burst Mode variant (LTC3204EDC-5), this B-version maintains strict constant-frequency operation regardless of load, eliminating audible noise and simplifying EMI filtering. Its 300mA current limit and thermal shutdown (trip ~160°C, hysteresis ~10°C) enable robust survival during sustained VOUT-to-GND short circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±4% (4.8V–5.2V); tightly regulated across 2.7V–5.5V input and 0–150mA load. |
| Input Voltage Range | 2.7V to 5.5V; supports single-cell Li-Ion (3.0–4.2V nominal) and 3.3V system rails without dropout. |
| Max Output Current | 150mA at VOUT = 5V; limited by effective open-loop output resistance (ROL ≈ 6Ω at 25°C). |
| Switching Frequency | 1.2MHz (typical); enables use of tiny 2.2µF ceramic capacitors and minimizes solution footprint. |
| Shutdown Current | <1µA; disconnects VOUT from VIN, enabling true zero-load power-off in battery systems. |
| Output Ripple | 20mVP-P at 100mA load; low-noise performance suitable for noise-sensitive analog/RF circuitry. |
| Efficiency | 82% at VIN = 3V, IOUT = 100mA; typical for voltage-doubling charge pumps; no inductor required. |
Pinout & Package
Package: 6-lead 2mm × 2mm plastic DFN (0.75mm height) with exposed GND pad (Pin 7), JEDEC MO-229 compliant. Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 7) | Ground reference and thermal path | Both pins must connect to solid PCB ground plane; Pin 7 (exposed pad) is essential for thermal dissipation and noise reduction. |
| VIN (Pin 2) | Main input supply | Accepts 2.7V–5.5V; requires ≥2.2µF low-ESR ceramic bypass capacitor placed adjacent to pin. |
| VOUT (Pin 3) | Regulated 5V output | Delivers up to 150mA; requires ≥2.2µF low-ESR ceramic capacitor directly at pin for stability and ripple control. |
| C+ (Pin 4) | Flying capacitor positive terminal | Connects to positive side of 2.2µF ceramic flying capacitor; polarity critical - no polarized caps allowed. |
| C– (Pin 5) | Flying capacitor negative terminal | Connects to negative side of same flying capacitor; forms charge-transfer path with C+ and internal switches. |
| SHDN (Pin 6) | Active-low shutdown control | Logic low (<0.4V) disables IC and disconnects VOUT; high (>1.3V) enables operation; must not float. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-frequency 1.2MHz operation | Eliminates variable-frequency artifacts; simplifies EMI filter design and avoids audible noise in portable devices. |
| Built-in soft-start (0.75ms) | Prevents inrush current spikes during power-up; ramps output current from 0 to 300mA gradually to avoid input rail sag. |
| Thermal + short-circuit protection | Survives indefinite VOUT-to-GND shorts; cycles safely between ~150°C and ~160°C junction temperature without latch-up. |
| Low-noise regulated output | 20mVP-P ripple at full load ensures clean power for ADCs, RF front-ends, and precision analog circuitry. |
| Ultra-low shutdown current | <1µA draw in shutdown enables multi-year battery life in always-off portable systems (e.g., remote sensors). |
Applications
| USB On-The-Go Power Supply | Li-Ion to 5V White LED Driver |
|---|---|
Use Scenario: Providing regulated 5V power from a single Li-Ion battery to enable USB peripheral functionality in smartphones or tablets. IC Role / Device Role / Timing Role: Voltage-doubling charge pump regulator generating stable 5V output independent of battery discharge curve (2.7V–4.2V). Use Value: Eliminates need for inductor-based boost converters; reduces BOM cost and board area while meeting USB 2.0 power spec (5V ±5%). | Use Scenario: Driving up to five white/blue LEDs (each ~3.2V, 20mA) from a 3.6V nominal Li-Ion source in handheld medical or industrial devices. IC Role / Device Role / Timing Role: Fixed 5V regulated supply enabling simple current-limiting resistor or PWM-brightened LED strings. Use Value: Delivers consistent LED brightness across full battery range without efficiency collapse at low VIN - unlike inductor-based solutions. |
| Handheld Industrial Scanner | Low-Noise Sensor Bias Rail |
Use Scenario: Powering CMOS image sensor and laser diode drivers in battery-operated barcode scanners requiring compact, silent power conversion. IC Role / Device Role / Timing Role: Primary 5V rail generator with constant-frequency operation preventing interference with image capture timing. Use Value: 1.2MHz switching avoids beat frequencies with sensor frame rates; 20mV ripple prevents image noise or laser modulation artifacts. | Use Scenario: Supplying clean 5V bias to precision analog front-ends (e.g., instrumentation amplifiers, sigma-delta ADCs) in portable test equipment. IC Role / Device Role / Timing Role: Low-noise, regulated voltage source decoupled from noisy digital or motor-driven sections of the system. Use Value: 20mVP-P ripple and absence of magnetic fields (no inductor) preserve signal integrity and measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-doubling regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3204EDC-5#TRPBF | Burst Mode® operation at light loads (IQ = 60µA vs. 3.6mA); same pinout, package, and 5V output. | Better light-load efficiency for intermittent-use devices; introduces variable-frequency operation and potential audible noise. | Select LTC3204EDC-5#TRPBF only if ultra-low quiescent current at partial load outweighs need for constant frequency. |
| LTC3200-5ES6#TRMPBF | 2MHz switching, 100mA max output, ThinSOT-6 package; higher fOSC allows smaller capacitors but lower current capability. | Suitable for space-constrained, lower-current designs where 150mA is not required; different footprint prevents drop-in replacement. | Choose LTC3200-5ES6#TRMPBF when board area is critical and load stays below 100mA; verify layout compatibility. |
Compared with LTC3204EDC-5#TRPBF, the LTC3204BEDC-5#TRPBF trades higher no-load current (3.6mA vs. 60µA) for deterministic 1.2MHz operation and superior transient response; versus LTC3200-5ES6#TRMPBF, it offers +50mA output headroom and DFN thermal performance at the cost of slightly larger footprint.
Availability
LTC3204BEDC-5#TRPBF is available at Aetrix Electronics and suitable for USB OTG power supplies, Li-Ion-powered LED drivers, handheld industrial scanners, and low-noise sensor bias rails requiring stable component supply and long-term manufacturability.
Supply support for LTC3204BEDC-5#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 full product support, datasheets, and application engineering for legacy Linear parts including the LTC3204 family.
The LTC3204B series was designed specifically for compact, low-EMI, inductorless 5V/3.3V generation in battery-powered portable electronics - emphasizing constant-frequency operation, robust protection, and minimal external components.
FAQ
What is the minimum input voltage required for LTC3204BEDC-5#TRPBF to regulate 5V output?
The LTC3204BEDC-5#TRPBF requires a minimum input voltage of 2.7V to maintain regulated 5V output across its full load range (0–150mA). Below 2.7V, regulation is not guaranteed; operation may cease or output voltage will droop. This makes it ideal for single-cell Li-Ion batteries (2.7V–4.2V range) without requiring additional undervoltage lockout circuitry.
Does LTC3204BEDC-5#TRPBF support Burst Mode® operation?
No, the LTC3204BEDC-5#TRPBF does not support Burst Mode® operation. It is the "B" version, engineered for strictly constant-frequency 1.2MHz switching across all load conditions - from zero to 150mA. The non-B version (LTC3204EDC-5#TRPBF) provides Burst Mode® for improved light-load efficiency, but introduces variable frequency and potential acoustic noise.
What capacitor values and types are mandatory for stable operation of LTC3204BEDC-5#TRPBF?
The LTC3204BEDC-5#TRPBF requires three 2.2µF X5R or X7R ceramic capacitors: one each for CIN (VIN bypass), COUT (VOUT filter), and CFLY (flying capacitor). Polarized capacitors (tantalum, aluminum) are strictly prohibited for CFLY due to voltage reversal risk. All must be low-ESR (<0.1Ω) and placed as close as possible to their respective pins to ensure regulation stability and low ripple.
How does thermal protection work on LTC3204BEDC-5#TRPBF during a sustained short circuit?
During a sustained VOUT-to-GND short, the LTC3204BEDC-5#TRPBF limits output current to ~300mA and begins self-heating. When junction temperature exceeds ~160°C, thermal shutdown activates, disabling the charge pump. Once the die cools to ~150°C, it automatically resumes operation - cycling indefinitely without damage. This behavior is confirmed in the datasheet's "Short-Circuit/Thermal Protection" section and Figure G06.
Is the exposed pad (Pin 7) on LTC3204BEDC-5#TRPBF electrically connected, and how must it be handled?
Yes, the exposed pad (Pin 7) on the LTC3204BEDC-5#TRPBF is internally connected to GND and is not optional. It must be soldered to a dedicated PCB ground plane on at least two layers to ensure both electrical integrity (low-impedance return path) and thermal performance (θJA = 80°C/W). Failure to solder the pad risks thermal shutdown under load and degraded ripple/noise performance.
LTC3204BEDC-5#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 150mA
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (2x2)
LTC3204BEDC-5#TRPBF FAQ
1.How can I place an order for LTC3204BEDC-5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3204BEDC-5#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 LTC3204BEDC-5#TRPBF reliable?
The price and inventory of LTC3204BEDC-5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3204BEDC-5#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3204BEDC-5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3204BEDC-5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3204BEDC-5#TRPBF?
LTC3204BEDC-5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3204BEDC-5#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 LTC3204BEDC-5#TRPBF?
For technical support, including LTC3204BEDC-5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3204BEDC-5#TRPBF requirements.
6.How does Aetrix verify that LTC3204BEDC-5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3204BEDC-5#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 LTC3204BEDC-5#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3204BEDC-5#TRPBF?
All LTC3204BEDC-5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3204BEDC-5#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 LTC3204BEDC-5#TRPBF part is unused and in its original packaging.
Return procedure for LTC3204BEDC-5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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