My Inquiry
My Account
Analog Devices Inc. LTC3201EMS#TRPBF
- Part No.:
- LTC3201EMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- LED Drivers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC3201EMS#TRPBF.pdf
- Description:
- IC LED DRIVER RGLTR 100MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,251
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3201EMS#TRPBF from Analog Devices (formerly Linear Technology) is an ultralow-noise, constant-frequency charge pump DC/DC converter designed specifically as a white LED backlight driver. It delivers up to 100mA output current with 3-bit DAC-controlled LED current regulation, operates from 2.7V to 4.5V input, and features 1.8MHz fixed switching frequency and integrated input noise filtering for direct battery connection.
For engineers reviewing the LTC3201EMS#TRPBF datasheet, LTC3201EMS#TRPBF pinout, LTC3201EMS#TRPBF application, or LTC3201EMS#TRPBF equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative options, and supply-chain support details for backlight power design.
Technical Context
The LTC3201EMS#TRPBF implements a two-phase nonoverlapping 1.8MHz charge pump topology with internal soft-start and closed-loop current regulation via FB-sense resistor feedback. Its 3-bit DAC (D0–D2) sets seven discrete reference voltages (0.09V to 0.63V) to control LED current without external DACs or PWM dimming circuitry.
It integrates an input noise filter network (FILTER pin + 0.22µF capacitor) that suppresses high-frequency VIN ripple, enabling direct Li-ion battery connection without additional LC filtering. Protection includes indefinite VOUT short-to-GND survival, thermal shutdown at ~160°C, and <1µA shutdown quiescent current when D0–D2 are all low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.7V to 4.5V - supports single-cell Li-ion batteries without pre-regulation. |
| Max Output Current | 100mA - sufficient to drive up to six parallel white LEDs in backlight configurations. |
| Switching Frequency | 1.8MHz (typ) - enables use of small 0.22µF flying and filter capacitors; reduces EMI footprint. |
| FB Regulation Voltage | 0.57V to 0.66V (typ 0.63V) - sets baseline LED current via external sense resistor (e.g., 6.3Ω → 100mA). |
| DAC Step Size | 90mV per bit - provides precise 7-level brightness control with monotonic current steps. |
| Shutdown Current | <1µA - disconnects load from VIN; critical for battery-powered standby efficiency. |
| Input Ripple Suppression | 30mAP-P at 200mA IN - achieved via integrated FILTER pin architecture and external 0.22µF ceramic cap. |
Pinout & Package
Package: 10-lead MSOP (3mm × 3mm), exposed pad not present, θJA = 130°C/W (1-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (1) | Charge pump output | Drives LED anodes; requires 1µF low-ESR ceramic bypass to GND for ripple control. |
| CP (2) | Flying capacitor positive | Connects to positive terminal of 0.22µF ceramic flying capacitor; voltage reverses during operation - no polarized caps allowed. |
| FILTER (3) | Noise filter input node | Interfaces with external 0.22µF high-resonant-frequency ceramic cap to cancel high-frequency VIN ripple; must be placed ≤1/8″ from pin. |
| CM (4) | Flying capacitor negative | Connects to negative terminal of flying capacitor; forms charge-transfer path with CP during pumping phases. |
| GND (5) | Power and signal ground | Must connect to solid ground plane; serves as return for all currents including FB sense and charge pump switching. |
| D0 (6) | DAC LSB input | CMOS digital input; low = 0, high = 1; all three D0–D2 low places device in shutdown mode (<1µA IIN). |
| D1 (7) | DAC bit-1 input | Part of 3-bit code determining FB reference voltage (0.09V–0.63V); controls LED current level directly. |
| D2 (8) | DAC MSB input | MSB of 3-bit DAC; full-scale code (111) sets 0.63V reference for max LED current. |
| VIN (9) | Input supply | Accepts 2.7V–4.5V; bypassed with 1µF ceramic capacitor to GND; supports direct battery tie-in due to ultra-low input ripple. |
| FB (10) | Current sense feedback | Monitors voltage across external sense resistor (FB–GND); regulates VOUT to maintain VFB = DAC reference voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow input current ripple | 30mAP-P at full load - eliminates need for input chokes or LDO pre-regulators in portable designs. |
| Integrated 3-bit DAC | Seven programmable current levels (0.09V–0.63V reference) - replaces external PWM dimming ICs and reduces BOM count. |
| No-inductor architecture | Uses only ceramic capacitors (flying, filter, input, output) - avoids magnetic EMI, size constraints, and inductor cost/sourcing risk. |
| Indefinite short-circuit survival | 150mA current limit + thermal shutdown cycling - enables robust operation in fault-prone display interfaces without external protection. |
| Soft-start (30µs) | Prevents >200mA inrush on VIN at turn-on - protects battery and upstream regulators from transient stress. |
Applications
| Smartphone Backlight | Tablet LCD Backlight |
|---|---|
Use Scenario: Driving 4–6 parallel white LEDs behind a 5–10″ LCD panel in battery-powered tablets. IC Role / Device Role / Timing Role: Constant-current charge pump LED driver with DAC-based brightness control and input ripple suppression. Use Value: Enables direct Li-ion connection (2.7V–4.5V), eliminates inductors, and maintains stable LED current across temperature with <±3% regulation error. |
Use Scenario: Powering edge-lit LED arrays in compact smartphones with strict height and EMI constraints. IC Role / Device Role / Timing Role: Ultralow-noise boost converter delivering regulated 100mA with 1.8MHz switching for minimal capacitor footprint. Use Value: Reduces total solution size by 40% vs inductor-based alternatives while meeting CISPR-22 Class B radiated emissions limits. |
| Portable Medical Display | Industrial HMI Panel |
Use Scenario: Illuminating high-reliability monochrome LCDs in handheld diagnostic devices requiring long battery life. IC Role / Device Role / Timing Role: Fault-tolerant LED driver with thermal shutdown, short-circuit protection, and sub-1µA shutdown current. Use Value: Ensures uninterrupted backlight operation during intermittent use; extends battery runtime by >20% in standby via true load disconnect. |
Use Scenario: Backlighting ruggedized touchscreens in factory-floor HMIs exposed to wide temperature swings (–40°C to 85°C). IC Role / Device Role / Timing Role: Temperature-stable current source using closed-loop FB sensing and DAC reference scaling. Use Value: Maintains consistent brightness across operating range with <5% LED current drift - verified over –40°C to 85°C per datasheet characterization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3202EMS#TRPBF | Higher 125mA output current; same 10-pin MSOP package; identical DAC interface and FILTER pin architecture. | Supports larger LED strings or higher-brightness panels; shares layout compatibility but requires recalculation of sense resistor for new current range. | Select when >100mA LED current is required; pinout and control logic match exactly - no PCB changes needed. |
| LTC3200EMS8#TRPBF | 8-pin MSOP package; 100mA output; 2MHz switching frequency; no FILTER pin or integrated input noise filter. | Lacks dedicated input ripple suppression - requires external LC filter for battery-direct use; smaller footprint but higher system-level EMI risk. | Choose for space-constrained designs where input filtering is handled elsewhere; not suitable for direct battery tie-in without added components. |
Compared with LTC3201EMS#TRPBF, LTC3202EMS#TRPBF offers higher current headroom with full pin and functional compatibility, while LTC3200EMS8#TRPBF trades input noise performance for smaller package size - making LTC3201EMS#TRPBF the optimal balance of noise immunity, current capability, and integration for mainstream portable backlighting.
Availability
LTC3201EMS#TRPBF is available at Aetrix Electronics and suitable for smartphone backlighting, tablet LCD power, and portable medical display applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC3201EMS#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 precision analog and power management product lines with full datasheet, reliability, and support continuity.
The LTC3201EMS#TRPBF belongs to Linear's ultralow-noise charge pump family, engineered specifically for EMI-sensitive portable backlight systems where inductor-free, battery-direct operation is mandatory.
FAQ
What is the maximum number of white LEDs the LTC3201EMS#TRPBF can drive?
The LTC3201EMS#TRPBF can drive up to six white LEDs in parallel, assuming typical forward voltage of 3.2V–3.6V per LED and 100mA total output current. Each LED must have its own current-setting resistor tied to the FB pin, or share a common sense resistor if VF matching is tightly controlled. The device regulates total output current, not per-LED current - mismatched VF or resistors will cause current imbalance.
Does the LTC3201EMS#TRPBF require an external inductor?
No, the LTC3201EMS#TRPBF is a capacitor-based charge pump and does not require any inductor. It uses a 0.22µF ceramic flying capacitor (CP–CM), a 0.22µF filter capacitor (FILTER–GND), and 1µF input/output ceramics. This eliminates magnetic EMI, saves board area, and simplifies layout - a key advantage over inductive boost LED drivers like the LT1932.
How does the FILTER pin on the LTC3201EMS#TRPBF reduce input noise?
The FILTER pin on the LTC3201EMS#TRPBF connects to an internal noise-canceling network that works with an external 0.22µF high-resonant-frequency ceramic capacitor to suppress high-frequency switching ripple at VIN. Unlike standard charge pumps that draw pulsed current, this architecture reduces input current ripple to just 30mAP-P at 200mA IN - enabling direct connection to Li-ion batteries without additional filtering components.
What happens when all three DAC pins (D0–D2) are grounded on the LTC3201EMS#TRPBF?
When D0, D1, and D2 are all held low (0V), the LTC3201EMS#TRPBF enters shutdown mode: the charge pump disables, VOUT disconnects from VIN, and quiescent current drops below 1µA. This is a true load-disconnect state - no current flows through the LEDs or sense resistor. Note that if VOUT floats above 1.5V during shutdown, leakage may increase to 10µA max.
Can the LTC3201EMS#TRPBF operate outside its specified 2.7V–4.5V VIN range?
No - the LTC3201EMS#TRPBF is not rated for operation below 2.7V or above 4.5V. Absolute maximum ratings specify –0.3V to 6V on VIN, but functional operation, regulation accuracy, and safety protections (e.g., thermal shutdown threshold, DAC linearity) are only guaranteed within 2.7V–4.5V. Operating outside this range risks unstable regulation, reduced efficiency, or premature device failure.
LTC3201EMS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Switched Capacitor (Charge Pump)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 4.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 100mA
- Frequency:
- 1.8MHz
- Dimming:
- -
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
LTC3201EMS#TRPBF FAQ
1.How can I place an order for LTC3201EMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3201EMS#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 LTC3201EMS#TRPBF reliable?
The price and inventory of LTC3201EMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3201EMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3201EMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3201EMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3201EMS#TRPBF?
LTC3201EMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3201EMS#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 LTC3201EMS#TRPBF?
For technical support, including LTC3201EMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3201EMS#TRPBF requirements.
6.How does Aetrix verify that LTC3201EMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3201EMS#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 LTC3201EMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3201EMS#TRPBF?
All LTC3201EMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3201EMS#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 LTC3201EMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC3201EMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3201EMS#TRPBF Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
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…
