My Inquiry
My Account
Analog Devices Inc. LTC1262CS8#TRPBF
- Part No.:
- LTC1262CS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Special Purpose Regulators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC1262CS8#TRPBF.pdf
- Description:
- IC REG CONV PROG SUP 1OUT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,076
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC1262CS8#TRPBF from Analog Devices (formerly Linear Technology) is a regulated 12V ±5% charge-pump DC/DC converter designed specifically for byte-wide flash memory programming supplies. It delivers up to 30mA output from a 4.75V–5.5V input, requires no inductors, and features TTL-compatible shutdown with 0.5µA quiescent current. Used in embedded microcontroller systems where compact, low-noise 12V VPP generation is required.
For engineers reviewing the LTC1262CS8#TRPBF datasheet, LTC1262CS8#TRPBF pinout, LTC1262CS8#TRPBF application, or LTC1262CS8#TRPBF equivalent, key selection criteria include guaranteed 30mA output at 12V ±5%, 500µA operating supply current, 0.5µA shutdown current, 300kHz oscillator frequency, and SO-8 package compatibility with flash memory programming timing constraints.
Technical Context
The LTC1262CS8#TRPBF implements a voltage-tripling charge pump architecture clocked at 300kHz to generate regulated 12V output without magnetic components. Regulation is achieved via a bandgap-referenced comparator with hysteresis that gates oscillator pulses to the pump based on feedback from a resistor divider sensing VOUT.
It integrates internal power switches driven between VOUT and GND, includes an internal diode for reliable startup under load, and uses external ceramic capacitors (C1/C2 = 0.22µF, CIN/COUT = 4.7µF) for minimal footprint. Shutdown mode disconnects the pump and shorts VOUT to VCC via an internal switch.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 12V ±5% (11.4V–12.6V), tightly regulated across 0–30mA load and –40°C to 85°C. |
| Max Output Current | 30mA guaranteed continuous output; device survives up to 50mA but not rated for sustained operation above 30mA. |
| Input Voltage Range | 4.75V to 5.5V - matches standard 5V logic rail with ±5% tolerance, enabling direct connection to microcontroller VCC. |
| Supply Current (Active) | 500µA typical ICC at no load - enables ultra-low-power operation in battery-backed or sleep-mode systems. |
| Shutdown Current | 0.5µA typical ISHDN - reduces system standby power to negligible levels when flash programming is inactive. |
| Oscillator Frequency | 300kHz fixed - determines charge pump switching speed and ripple frequency; sets minimum capacitor ESR requirements. |
| Turn-On / Turn-Off Time | tON = 500µs to reach 11.4V; tOFF = 3.3ms to decay to 5.1V - defines flash VPP enable/disable timing margins in MCU-controlled sequences. |
Pinout & Package
The LTC1262CS8#TRPBF is housed in an 8-lead plastic SOIC (SO-8, narrow 0.150") package, RoHS-compliant and tape-and-reel packaged as #TRPBF.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1– (Pin 1) | Charge Pump Capacitor Negative Terminal | Connects to negative plate of 0.22µF ceramic capacitor C1; forms half of flying capacitor network. |
| C1+ (Pin 2) | Charge Pump Capacitor Positive Terminal | Connects to positive plate of 0.22µF ceramic capacitor C1; alternately charges/discharges with C2 during tripling cycle. |
| C2– (Pin 3) | Charge Pump Capacitor Negative Terminal | Connects to negative plate of second 0.22µF ceramic capacitor C2; stacked with C1 during voltage multiplication phase. |
| C2+ (Pin 4) | Charge Pump Capacitor Positive Terminal | Connects to positive plate of C2; switched to charge output capacitor COUT when oscillator output transitions high. |
| SHDN (Pin 8) | TTL-Compatible Logic Input | Low = active (normal operation); high or floating = shutdown (0.5µA ICC, VOUT = VCC); directly drivable by GPIO or address decoder. |
| GND (Pin 7) | Analog and Power Ground Reference | Common return for all internal circuitry; must be low-impedance and separated from noisy digital ground if shared PCB. |
| VOUT (Pin 6) | Regulated 12V Output | Delivers up to 30mA at 12V ±5%; requires 4.7µF tantalum or ceramic bypass capacitor to ground for stability and ripple control. |
| VCC (Pin 5) | Primary Input Supply | Accepts 4.75V–5.5V; powers internal oscillator, bandgap, and switches; requires 4.7µF bypass capacitor to ground. |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor design | Eliminates EMI, size, and cost penalties of magnetic components - ideal for space-constrained flash programming circuits. |
| Guaranteed 30mA output | Meets JEDEC-standard VPP current requirements for byte-wide NOR flash devices without derating or thermal concern. |
| 0.5µA shutdown current | Enables true zero-power standby in portable or energy-harvesting systems where flash programming is infrequent. |
| Internal diode-assisted startup | Ensures reliable VOUT ramp-up even under full 30mA load - prevents boot failure when flash is pre-charged or partially programmed. |
| SO-8 package compatibility | Matches industry-standard footprint for easy integration into existing 5V microcontroller PCB layouts with minimal redesign. |
Applications
| Flash Memory Programming | Compact 12V Op Amp Supply |
|---|---|
Use Scenario: Microcontroller-based in-system programming (ISP) of parallel NOR flash memory (e.g., Intel StrataFlash, Spansion S29GL) requiring precise 12V VPP during write/erase cycles. IC Role / Device Role / Timing Role: Dedicated VPP generator providing regulated 12V ±5% at up to 30mA with sub-millisecond turn-on for tight MCU timing control. Use Value: Eliminates need for external boost inductor and associated layout complexity while meeting JEDEC VPP accuracy and current specs. | Use Scenario: Powering rail-to-rail op amps (e.g., LT1492, LTC2050) in portable test equipment requiring clean ±12V rails derived from single 5V supply. IC Role / Device Role / Timing Role: High-efficiency 12V source with low ripple and fast transient response, used as positive supply for dual-supply signal conditioning stages. Use Value: Delivers stable 12V with <100mV peak-to-peak ripple (with recommended 4.7µF COUT), enabling >100dB PSRR in precision analog front-ends. |
| Battery-Powered Systems | Industrial Microcontroller Peripherals |
Use Scenario: Handheld data loggers using flash memory for firmware updates and data storage, powered by two AA alkaline cells (3V nominal) with 5V boost stage feeding LTC1262CS8#TRPBF. IC Role / Device Role / Timing Role: Low-quiescent-current VPP generator activated only during flash operations to minimize average system current draw. Use Value: 0.5µA shutdown current extends battery life by >5 years in applications with infrequent firmware updates (e.g., once per quarter). | Use Scenario: PLC I/O modules with integrated flash-based configuration storage, requiring robust VPP generation in electrically noisy industrial environments. IC Role / Device Role / Timing Role: Immune-to-noise 12V supply with internal regulation and hysteresis-based control - immune to supply dips during relay switching transients. Use Value: Maintains VPP within ±5% despite 100mV VCC ripple, preventing partial-programming errors and flash corruption in harsh EMI conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory programming supply applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1301CS8#TRPBF | Higher efficiency (85% vs 74%), 7µA shutdown current, requires external inductor and Schottky diode. | Supports wider input range (1.5V–10V); better for multi-rail or battery-voltage-flexible designs. | Select LT1301CS8#TRPBF when higher efficiency or lower shutdown current is critical and inductor placement is acceptable. |
| LTC1983ES6#TRMPBF | Fixed 12V output, 25mA max, 1.2µA shutdown, SC70-6 package; uses different charge-pump topology with integrated caps. | Smaller footprint but lower current rating; not suitable for flash devices requiring >25mA VPP. | Select LTC1983ES6#TRMPBF only for space-constrained, low-current flash or EEPROM programming where 25mA suffices. |
Compared with LT1301CS8#TRPBF and LTC1983ES6#TRMPBF, the LTC1262CS8#TRPBF offers the optimal balance of guaranteed 30mA output, inductorless simplicity, and ultra-low 0.5µA shutdown current - making it the preferred choice for cost-sensitive, high-reliability 5V-based flash programming circuits.
Availability
LTC1262CS8#TRPBF is available at Aetrix Electronics and suitable for flash memory programming, compact op amp biasing, and battery-powered embedded systems requiring stable component supply and long-term manufacturability.
Supply support for LTC1262CS8#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 its legacy precision analog and power management portfolio with full datasheet, reliability, and support continuity.
The LTC1262CS8#TRPBF belongs to Linear's dedicated flash memory power management product line, engineered specifically to replace discrete charge-pump solutions and inductor-based boost converters in 5V microcontroller systems.
FAQ
What is the maximum continuous output current specification for the LTC1262CS8#TRPBF?
The LTC1262CS8#TRPBF is guaranteed to deliver 30mA continuously at 12V ±5% across its full operating temperature range (–40°C to 85°C). While absolute maximum ratings permit brief 50mA operation, sustained current above 30mA may cause regulation drift or thermal stress and is not supported by specifications or characterization data for the LTC1262CS8#TRPBF.
Can the LTC1262CS8#TRPBF operate from a 3.3V input supply?
No, the LTC1262CS8#TRPBF requires a minimum input voltage of 4.75V and is specified only for 4.75V to 5.5V operation. Attempting to power the LTC1262CS8#TRPBF from 3.3V will result in failure to regulate 12V output or start-up, as the internal charge pump lacks sufficient headroom to triple below ~4V. A 5V intermediate rail is mandatory for proper LTC1262CS8#TRPBF functionality.
What external capacitors are required for stable operation of the LTC1262CS8#TRPBF?
The LTC1262CS8#TRPBF requires four external capacitors: two 0.22µF ceramic flying capacitors (C1, C2) connected between pins C1+/C1– and C2+/C2–, one 4.7µF input bypass capacitor (CIN) from VCC to GND, and one 4.7µF output capacitor (COUT) from VOUT to GND. Tantalum or ceramic types are recommended for CIN/COUT; ceramic is mandatory for C1/C2 per the LTC1262CS8#TRPBF datasheet.
Does the LTC1262CS8#TRPBF require a minimum load to maintain regulation?
No, the LTC1262CS8#TRPBF maintains 12V ±5% regulation from 0mA to 30mA output current without requiring a minimum load. Its hysteretic oscillator-based control loop actively adjusts pumping duty cycle down to zero load, and output voltage remains within spec at no-load conditions - a key advantage over many competing charge pumps that exhibit overvoltage at light loads.
How does the SHDN pin function on the LTC1262CS8#TRPBF, and what logic levels are recognized?
The SHDN pin on the LTC1262CS8#TRPBF is TTL-compatible: a logic low (≤0.8V) enables normal operation; a logic high (≥2.4V) or open-circuit condition places the device in shutdown mode, reducing supply current to 0.5µA typical and shorting VOUT to VCC. The LTC1262CS8#TRPBF draws only –5µA to –10µA into SHDN when pulled low, allowing direct connection to microcontroller GPIO without buffering.
LTC1262CS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Converter, Programming Supply
- Voltage - Input:
- 4.75V ~ 5.5V
- Number of Outputs:
- 1
- Voltage - Output:
- 12V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LTC1262CS8#TRPBF FAQ
1.How can I place an order for LTC1262CS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1262CS8#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 LTC1262CS8#TRPBF reliable?
The price and inventory of LTC1262CS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1262CS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1262CS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1262CS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1262CS8#TRPBF?
LTC1262CS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1262CS8#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 LTC1262CS8#TRPBF?
For technical support, including LTC1262CS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1262CS8#TRPBF requirements.
6.How does Aetrix verify that LTC1262CS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1262CS8#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 LTC1262CS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1262CS8#TRPBF?
All LTC1262CS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1262CS8#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 LTC1262CS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1262CS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC1262CS8#TRPBF Tags
-
TPS51206DSQR
Texas Instruments
-
TPS51200DRCR
Texas Instruments
-
TPS51200DRCT
Texas Instruments
-
TPS62740DSSR
Texas Instruments
-
TPS51100DGQR
Texas Instruments
-
NCP51200MNTXG
onsemi
-
NCP51400MNTXG
onsemi
-
RT9026GSP
Richtek USA Inc.
-
LP2998MRX/NOPB
Texas Instruments
-
TPS51200QDRCRQ1
Texas Instruments
-
DPA423GN-TL
Power Integrations
-
LM10011SD/NOPB
Texas Instruments
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…
