My Inquiry
My Account
Analog Devices Inc. LTC3250ES6-1.2#TRPBF
- Part No.:
- LTC3250ES6-1.2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC3250ES6-1.2#TRPBF.pdf
- Description:
- IC REG CHARGE PUMP 1.2V TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,662
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3250ES6-1.2#TRPBF from Analog Devices (formerly Linear Technology) is a 1.2V ±4% fixed-output, inductorless charge pump step-down DC/DC converter for low-power battery-operated systems. It operates from 2.7V to 5.5V input, delivers up to 250mA output current, achieves 81% efficiency at 3.6V Li-Ion input, and features 1.5MHz constant-frequency switching with Burst Mode® operation. It is used in handheld medical instruments and digital cameras requiring compact, low-noise 1.2V rails.
For engineers reviewing the LTC3250ES6-1.2#TRPBF datasheet, LTC3250ES6-1.2#TRPBF pinout, LTC3250ES6-1.2#TRPBF application, or LTC3250ES6-1.2#TRPBF equivalent, key selection criteria include its 250mA output capability, 1.2V ±4% regulation accuracy, 35µA no-load quiescent current, shutdown disconnect functionality, and SOT-23-6 ThinSOT™ package compatibility with space-constrained PCB layouts.
Technical Context
The LTC3250ES6-1.2#TRPBF implements a 2-phase nonoverlapping switched-capacitor architecture to achieve 2:1 fractional voltage conversion without inductors. Its internal 1.5MHz oscillator drives charge transfer between VIN and VOUT via external flying capacitors (C+, C–), delivering half the output current from VIN to attain ~2× efficiency versus LDOs.
Regulation is maintained by sensing VOUT through an internal resistor divider and modulating charge pump strength; soft-start limits inrush during turn-on, while Burst Mode® activates below ~30mA load to reduce quiescent current to 35µA and maintain high light-load efficiency. Built-in thermal shutdown (>160°C) and short-circuit limiting (~500mA) ensure robust operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.2V ±4% - tight regulation ensures stable core supply for low-voltage logic and sensors |
| Max Output Current | 250mA - supports moderate-current peripherals like image sensors or audio codecs |
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-Ion (2.7–4.2V), 3-cell NiMH (3.6V), or 5V USB-supplied systems |
| Quiescent Current | 35µA - enables multi-week battery life in always-on monitoring applications |
| Switching Frequency | 1.5MHz (typ) - allows use of small ceramic capacitors and simplifies EMI filtering |
| Shutdown Current | <1µA - preserves battery charge during system sleep or standby modes |
| Load Regulation | 0.12mV/mA - minimal output droop across full 0–250mA load range improves system stability |
| Efficiency @ 100mA | 81% @ 3.6V → 1.2V - doubles power efficiency vs. linear regulator, reducing thermal load |
Pinout & Package
Package: 6-pin ThinSOT™ (SOT-23-6), 1mm profile, JEDEC MO-193 compliant, 2.9mm × 1.6mm footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input supply connection | Accepts 2.7–5.5V; requires ≥1µF low-ESR ceramic bypass capacitor for stable operation |
| GND (Pin 2) | Power ground reference | Must connect to solid ground plane to minimize noise and support thermal dissipation |
| SHDN (Pin 3) | Active-low enable control | Logic low (<0.4V) disables device and disconnects VOUT from VIN; CMOS input, must not float |
| C– (Pin 4) | Flying capacitor negative terminal | Connects to negative side of 1µF ceramic flying capacitor; polarity-sensitive-no tantalum/aluminum |
| VOUT (Pin 5) | Regulated 1.2V output | Delivers up to 250mA; requires ≥4.7µF low-ESR ceramic capacitor for ripple control and loop stability |
| C+ (Pin 6) | Flying capacitor positive terminal | Connects to positive side of 1µF ceramic flying capacitor; high dv/dt node-keep trace short and shielded |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor architecture | Eliminates magnetic components, reduces BOM count, and avoids EMI from inductor ringing |
| Constant-frequency 1.5MHz operation | Enables predictable noise spectrum and simplified input/output filtering with small ceramics |
| Burst Mode® at light loads | Maintains >75% efficiency down to 1mA load while holding IQ at 35µA |
| Soft-start circuitry | Linearly ramps output current over ~500µs to prevent input voltage sag and inrush stress |
| Full protection suite | Includes short-circuit current limiting (~500mA), thermal shutdown (>160°C), and overtemperature hysteresis (~150°C restart) |
| Shutdown disconnect | Internally opens path between VIN and VOUT, preventing backfeed and enabling true rail isolation |
Applications
| Handheld Medical Instruments | Digital Cameras |
|---|---|
Use Scenario: Portable blood glucose meters or pulse oximeters powered by coin-cell or single Li-Ion batteries. IC Role / Device Role / Timing Role: Primary 1.2V supply for ultra-low-power microcontroller and analog front-end sensor interface. Use Value: 35µA quiescent current extends battery life to >6 months; 1.2V ±4% output ensures ADC reference stability and sensor accuracy. | Use Scenario: Compact digital still/video cameras using 3.7V Li-Ion with image sensor and ISP requiring clean 1.2V core voltage. IC Role / Device Role / Timing Role: Core voltage regulator for CMOS image sensor digital logic and embedded processor subsystems. Use Value: 1.5MHz switching minimizes conducted noise on sensitive analog video paths; 250mA output supports burst-mode capture sequences. |
| Cellular Phones | Low-Power DSP Supplies |
Use Scenario: Feature phones or IoT cellular modules where space and battery runtime are critical constraints. IC Role / Device Role / Timing Role: Secondary regulated rail for baseband processor I/O or RF transceiver bias circuitry. Use Value: ThinSOT-6 package (1mm height) fits under stacked memory; shutdown current <1µA enables deep-sleep power states. | Use Scenario: Battery-powered voice recorders or edge AI inference nodes using low-voltage DSPs (e.g., TI C55xx, ADI SHARC). IC Role / Device Role / Timing Role: Dedicated 1.2V supply for DSP core voltage domain, decoupled from noisy system rails. Use Value: Low output ripple (4mVP-P in continuous mode) prevents clock jitter and maintains FFT accuracy in real-time signal processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge pump step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3251EMS#TRPBF | Higher 500mA output, spread-spectrum switching, adjustable 0.9–1.6V output via feedback resistors | Requires external resistors and larger layout area; better suited for variable-voltage SoC cores | Select when >250mA or programmable output is required; not pin-compatible |
| LTC1911ES6-1.2#TRPBF | Lower 250mA output but same 1.2V fixed output; 1.5MHz switching; higher 180µA IQ and no Burst Mode | Less efficient at light loads; lacks soft-start and shutdown disconnect | Consider only if legacy design reuse is needed; inferior light-load performance and protection |
Compared with LTC3250ES6-1.2#TRPBF, LTC3251 offers higher current and flexibility at cost of complexity, while LTC1911 sacrifices efficiency and safety features for older architecture-LTC3250ES6-1.2#TRPBF remains optimal for space- and battery-limited 1.2V fixed-rail applications.
Availability
LTC3250ES6-1.2#TRPBF is available at Aetrix Electronics and suitable for handheld medical instruments, digital cameras, and cellular phone designs requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for LTC3250ES6-1.2#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 continues to manufacture, qualify, and support its precision analog and power management portfolio.
The LTC3250ES6-1.2#TRPBF belongs to Linear's high-efficiency, inductorless charge pump DC/DC converter family, designed specifically for ultra-compact, low-noise, battery-powered portable electronics where board space and quiescent power are critical.
FAQ
What is the maximum output current capability of the LTC3250ES6-1.2#TRPBF?
The LTC3250ES6-1.2#TRPBF delivers up to 250mA continuous output current while maintaining 1.2V ±4% regulation across its full input range (2.7V–5.5V) and operating temperature (–40°C to 85°C). Peak short-circuit current is limited to ~500mA, and sustained operation above 250mA may trigger thermal shutdown depending on ambient conditions and PCB thermal design.
Does the LTC3250ES6-1.2#TRPBF require external inductors?
No, the LTC3250ES6-1.2#TRPBF is an inductorless charge pump DC/DC converter. It uses two external ceramic capacitors (1µF flying cap between C+ and C–, and 4.7µF output cap on VOUT) to achieve step-down conversion. This eliminates magnetic components, reduces EMI, and enables ultra-thin (<1mm) packaging in the SOT-23-6 footprint.
How does the LTC3250ES6-1.2#TRPBF manage efficiency at light loads?
The LTC3250ES6-1.2#TRPBF employs Burst Mode® operation below ~30mA load, disabling the 1.5MHz oscillator and entering a low-current state. This reduces quiescent current to 35µA and maintains >75% efficiency even at 1mA output, significantly outperforming linear regulators and non-Burst charge pumps in standby or intermittent-use applications.
What protection features are integrated into the LTC3250ES6-1.2#TRPBF?
The LTC3250ES6-1.2#TRPBF integrates short-circuit current limiting (~500mA), thermal shutdown (>160°C junction), automatic restart hysteresis (~150°C), and soft-start circuitry. It also provides shutdown disconnect-internally isolating VOUT from VIN during SHDN assertion-to prevent backfeed and enable true rail control in multi-rail systems.
Can the LTC3250ES6-1.2#TRPBF be used with a 2.7V input source such as a depleted Li-Ion cell?
Yes, the LTC3250ES6-1.2#TRPBF is fully specified to operate down to 2.7V input. At 2.7V VIN and 100mA load, it maintains 1.2V ±4% output with ~72% efficiency (per typical performance curves), making it suitable for end-of-discharge operation in single-cell Li-Ion or 3-cell NiMH systems without brownout risk.
LTC3250ES6-1.2#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-Down
- 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):
- 1.2V
- Voltage - Output (Max):
- -
- Current - Output:
- 250mA
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LTC3250ES6-1.2#TRPBF FAQ
1.How can I place an order for LTC3250ES6-1.2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3250ES6-1.2#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 LTC3250ES6-1.2#TRPBF reliable?
The price and inventory of LTC3250ES6-1.2#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3250ES6-1.2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3250ES6-1.2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3250ES6-1.2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3250ES6-1.2#TRPBF?
LTC3250ES6-1.2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3250ES6-1.2#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 LTC3250ES6-1.2#TRPBF?
For technical support, including LTC3250ES6-1.2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3250ES6-1.2#TRPBF requirements.
6.How does Aetrix verify that LTC3250ES6-1.2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3250ES6-1.2#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 LTC3250ES6-1.2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3250ES6-1.2#TRPBF?
All LTC3250ES6-1.2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3250ES6-1.2#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 LTC3250ES6-1.2#TRPBF part is unused and in its original packaging.
Return procedure for LTC3250ES6-1.2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3250ES6-1.2#TRPBF Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
