My Inquiry
My Account
Analog Devices Inc. LT1054CSW#PBF
- Part No.:
- LT1054CSW#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
LT1054CSW#PBF.pdf
- Description:
- IC REG CHARGE PUMP ADJ/2.5V 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,581
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1054CSW#PBF from Analog Devices is a monolithic bipolar switched-capacitor voltage converter and regulator in 16-lead plastic SOIC (SW16) package, delivering up to 100mA output current with 1.1V typical voltage loss at 100mA across 3.5V–15V input range, supporting voltage inversion, negative/positive doubling, and regulated output via external resistor divider - used in dual-rail power supplies for op-amp circuits and sensor signal conditioning.
For engineers reviewing the LT1054CSW#PBF datasheet, LT1054CSW#PBF pinout, LT1054CSW#PBF application, or LT1054CSW#PBF equivalent, key selection considerations include its adaptive switch driver for wide-current efficiency, 25kHz internal oscillator with external sync capability, shutdown control via FB/SHDN pin, ±2.5V reference output, and compatibility with LTC1044/ICL7660-based legacy designs.
Technical Context
The LT1054CSW#PBF implements a charge-pump topology with bipolar switching transistors and an integrated error amplifier for regulation. Its adaptive switch driver dynamically adjusts drive strength to maintain low voltage loss (1.1V @ 100mA) across 3.5V–15V input and varying load conditions.
It features a 25kHz nominal oscillator with external frequency adjustment/synchronization via OSC pin, a 2.5V reference (±0.15V over temperature), and shutdown functionality triggered by pulling FB/SHDN below 0.45V - reducing supply current to <100µA while discharging CIN/COUT through the load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 100mA maximum - sufficient for powering dual-rail op-amps or low-power analog circuitry without external pass devices. |
| Voltage Loss | 1.1V typical at 100mA - defines minimum input-to-output headroom required for stable operation. |
| Input Voltage Range | 3.5V to 15V - supports wide-input industrial and battery-backed systems including 5V, 9V, and 12V rails. |
| Oscillator Frequency | 25kHz nominal - optimized for minimal switching + conduction losses; adjustable externally via OSC pin. |
| Reference Voltage | 2.5V ±0.15V - enables precise regulation of inverted or doubled outputs using standard resistor dividers. |
| Shutdown Current | <100µA - allows ultra-low-power standby in portable or energy-sensitive applications. |
| Package | 16-lead plastic SOIC (SW16) - surface-mount compatible with automated assembly; θJA = 150°C/W. |
Pinout & Package
LT1054CSW#PBF uses a 16-lead plastic SOIC (SW16) package with exposed thermal pad (not electrically connected). Pin functions are defined per Analog Devices Rev. I datasheet, with NC pins unused and critical signals distributed to minimize coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (FB/SHDN) | Feedback input / Shutdown control | Inverting input of error amplifier for regulation; pulled below 0.45V to enter shutdown mode with <100µA quiescent current. |
| 2 (CAP+) | Positive capacitor terminal | Switched between V+ and GND to charge CIN; carries ~2.2× output current during charging phase. |
| 3 (GND) | Ground reference | Substrate tie point; all voltages referenced to this pin; VOUT must not exceed GND potential to avoid substrate diode forward bias. |
| 4 (CAP−) | Negative capacitor terminal | Switched between GND and VOUT to transfer charge from CIN to COUT; unidirectional current flow enabled by bipolar switches. |
| 5 (VOUT) | Output terminal | Regulated or unregulated output node; tied to substrate - requires careful layout to prevent start-up failure when driving op-amp loads. |
| 6 (VREF) | 2.5V reference output | Stable reference for feedback networks; temperature-compensated to minimize drift in regulated output voltage. |
| 7 (OSC) | Oscillator timing/sync | Connects to internal 150pF timing cap; supports external capacitor tuning or open-collector synchronization to system clock. |
| 8 (V+) | Input supply | Main power input; peak current draw ≈2.2× IOUT - requires ≥2µF low-ESR bypass capacitor. |
| 9–10, 12–15 | No Connect (NC) | Not bonded internally; left floating or grounded per layout best practices to reduce noise coupling. |
| 11 | NC (thermal pad tie) | Thermal pad connection point - recommended to connect to large copper pour for thermal relief. |
| 16 | GND (secondary) | Additional ground terminal for improved thermal and EMI performance; must be connected to main GND plane. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive switch driver | Optimizes conduction efficiency across 0–100mA load range, maintaining ≤1.6V voltage loss even at full rated current. |
| Integrated regulation loop | Combines 2.5V reference, error amplifier, and PNP switch control to enable stable regulated outputs without external ICs. |
| External oscillator sync | Allows deterministic timing alignment with system clocks via open-collector drive on OSC pin - critical for EMI-sensitive applications. |
| Low-quiescent shutdown | Reduces total supply current to <100µA while actively discharging CIN/COUT through load - eliminates need for external bleed resistors. |
| Pin compatibility | Direct replacement for LTC1044/ICL7660 in SW16 footprint - enables drop-in upgrade path with improved current capability and regulation. |
Applications
| Op-Amp Dual-Rail Supply | Sensor Signal Conditioning |
|---|---|
Use Scenario: Generating ±5V or ±12V rails from single 5V or 12V supply for rail-to-rail op-amps in data acquisition front-ends. IC Role / Device Role / Timing Role: Voltage inverter/regulator providing isolated negative rail with tight regulation against load and line variation. Use Value: Eliminates need for discrete transformer-based supplies; achieves <1.1V voltage loss and <50mV load regulation at 100mA. |
Use Scenario: Powering strain gauge bridge amplifiers requiring matched positive and negative supplies with low noise and drift. IC Role / Device Role / Timing Role: Regulated negative voltage source synchronized to system clock via OSC pin to suppress switching artifacts in analog signal chain. Use Value: 2.5V reference temperature compensation yields <±0.5% output drift over –40°C to +85°C, enabling high-precision bridge excitation. |
| Battery-Powered Instrumentation | Legacy Circuit Upgrade |
Use Scenario: Extending runtime in handheld test equipment by replacing aging ICL7660-based inverters with higher-efficiency LT1054CSW#PBF. IC Role / Device Role / Timing Role: Low-loss switched-capacitor converter operating from 3.7V Li-ion cell down to 3.5V cutoff, maintaining regulated –5V output. Use Value: 100µA shutdown current extends standby time; adaptive driver sustains >90% efficiency from 10mA to 100mA load range. |
Use Scenario: Upgrading obsolete LTC1044-based power sections in field-deployed medical devices without PCB redesign. IC Role / Device Role / Timing Role: Pin-compatible functional replacement offering 100mA output (vs. 20mA LTC1044), regulation, and lower voltage loss. Use Value: Enables higher load capacity and tighter output stability while reusing existing layout, bill-of-materials, and firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switched-capacitor voltage converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1044CSW#PBF | 20mA max output, no regulation, fixed 10kHz oscillator, no shutdown, 8-pin SOIC | Unregulated inverter only; insufficient for loads >20mA or precision regulation needs | Select only for legacy compatibility where regulation and >20mA output are unnecessary. |
| MAX680CPA+ | 100mA output, no regulation, 125kHz oscillator, no shutdown, 8-pin PDIP/SOIC | Higher-frequency operation increases ripple but reduces capacitor size; lacks FB/SHDN and VREF | Prefer when compact CIN/COUT sizing is critical and regulation/shutdown are not required. |
Compared with LTC1044CSW#PBF and MAX680CPA+, the LT1054CSW#PBF uniquely combines 100mA output, integrated regulation, shutdown control, and 25kHz adaptive oscillator - making it the only option suitable for precision, low-noise, and energy-efficient dual-rail generation in space-constrained designs.
Availability
LT1054CSW#PBF is available at Aetrix Electronics and suitable for op-amp dual-rail supplies, sensor signal conditioning, and battery-powered instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LT1054CSW#PBF 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The LT1054CSW#PBF belongs to Analog Devices' legacy linear power conversion product line, designed specifically for low-noise, regulated charge-pump power solutions in analog-intensive systems where transformerless dual-rail generation is essential.
FAQ
What is the maximum output current of the LT1054CSW#PBF?
The LT1054CSW#PBF delivers up to 100mA output current in inverter or doubler configurations, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables of the Rev. I datasheet. This rating applies across the full 3.5V–15V input range and 0°C–100°C operating temperature range. Exceeding 100mA may cause thermal shutdown or degraded regulation performance.
Does the LT1054CSW#PBF support regulated output voltage?
Yes, the LT1054CSW#PBF supports regulated output voltage using its internal 2.5V reference and error amplifier. By connecting an external resistor divider from VOUT to FB/SHDN and grounding the divider's center tap to GND, users can set precise negative or positive regulated outputs - e.g., –5.0V ±50mV with R1=20kΩ and R2=102.6kΩ as shown in Figure 5 of the datasheet.
How does the LT1054CSW#PBF achieve low voltage loss at high load currents?
The LT1054CSW#PBF achieves 1.1V typical voltage loss at 100mA through an adaptive switch driver that optimizes bipolar transistor conduction across the full load range. Unlike fixed-drive predecessors, this architecture dynamically adjusts base drive to minimize saturation voltage and switching transition losses - validated in Figure TA01 and TPC06–TPC08 of the datasheet.
Can the LT1054CSW#PBF be synchronized to an external clock?
Yes, the LT1054CSW#PBF supports external oscillator synchronization via the OSC pin (Pin 7). As described in the PIN FUNCTIONS section, an open-collector gate or NPN transistor can drive this pin at the desired system clock frequency, enabling deterministic timing alignment to suppress beat frequencies and reduce EMI in sensitive analog systems.
Is the LT1054CSW#PBF pin-compatible with the LTC1044?
Yes, the LT1054CSW#PBF is explicitly stated as pin-compatible with the LTC1044/ICL7660 in the FEATURES section of the datasheet. Both share identical SW16 pinout and function mapping, allowing direct replacement in existing layouts - though LT1054CSW#PBF adds regulation, shutdown, and higher output current capability not present in the LTC1044.
LT1054CSW#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Ratiometric, Step-Up
- Output Configuration:
- Positive or Negative
- Topology:
- Charge Pump
- Output Type:
- Adjustable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 15V
- Voltage - Output (Min/Fixed):
- 2.5V (-Vin, 2Vin)
- Voltage - Output (Max):
- 30V
- Current - Output:
- 100mA
- Frequency - Switching:
- 25kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 100°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
LT1054CSW#PBF FAQ
1.How can I place an order for LT1054CSW#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1054CSW#PBF 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 LT1054CSW#PBF reliable?
The price and inventory of LT1054CSW#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1054CSW#PBF is usually 5 days.
3.What payment methods are accepted for LT1054CSW#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1054CSW#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1054CSW#PBF?
LT1054CSW#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1054CSW#PBF 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 LT1054CSW#PBF?
For technical support, including LT1054CSW#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1054CSW#PBF requirements.
6.How does Aetrix verify that LT1054CSW#PBF is sourced from the original manufacturer or authorized distributors?
All LT1054CSW#PBF 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 LT1054CSW#PBF meets industry standards.
7.What is the process for return or replacement of LT1054CSW#PBF?
All LT1054CSW#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1054CSW#PBF, 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 LT1054CSW#PBF part is unused and in its original packaging.
Return procedure for LT1054CSW#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1054CSW#PBF 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…
