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Toshiba Semiconductor and Storage TB62763FMG,8,EL
- Part No.:
- TB62763FMG,8,EL
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- LED Drivers
- Package:
- 8-SMD, Flat Leads Exposed Pad
- Datasheet:
-
TB62763FMG,8,EL.pdf
- Description:
- IC LED DRIVER RGLTR 80MA 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:2,744
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Product details
Overview
TB62763FMG,8,EL from Toshiba is a step-up DC/DC converter IC designed for constant-current white LED backlight driving in portable displays. It integrates an N-channel MOSFET switch, supports 2–6 series-connected high-current white LEDs from a 2.8–5.5 V Li-ion supply, delivers up to 3 W output power at 20 V, and achieves ≥80% efficiency with external component optimization.
For engineers reviewing the TB62763FMG,8,EL datasheet, TB62763FMG,8,EL pinout, TB62763FMG,8,EL application, or TB62763FMG,8,EL equivalent, key selection criteria include adjustable switching frequency (200 kHz–2 MHz), ±1.5% LED current accuracy via external REXT, OVP shutdown at 32.5 V (typ.), soft-start control, and SON8-P-0.65 package thermal performance (Rth(j-a) = 193°C/W on PCB).
Technical Context
The TB62763FMG,8,EL implements a current-mode boost topology with internal ramp compensation and error amplifier feedback. Its integrated N-ch MOSFET switch operates with externally set frequency via FSET pin resistance (RFSET), while LED current regulation relies on precise 500 mV FB reference voltage and low-drift sensing.
OVP protection uses dedicated OVP pin monitoring with 1.0 V hysteresis (32.5 V trip / 31.5 V recovery); soft-start is implemented via SS pin capacitor timing; EN pin provides clean enable/disable logic control with defined VENH (≥1.3 V) and VENL (≤0.4 V) thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8 V to 5.5 V - compatible with single-cell Li-ion battery operation without pre-regulation. |
| LED Current Accuracy | ±1.5% - enables tight brightness uniformity across multi-LED strings without trimming. |
| Switching Frequency Range | 200 kHz to 2 MHz - selectable via RFSET resistor to balance EMI, efficiency, and inductor size. |
| OVP Threshold | 32.5 V (typ.) - protects downstream LEDs and IC from open-circuit overvoltage failure. |
| Feedback Reference Voltage | 500.0 mV (±1.5%) - sets LED current via REXT = 500 mV / IF; stable over input voltage and temperature. |
| Efficiency | ≥80% - achieved with recommended 10 μH/22 μH inductor and ceramic output capacitors under 3 W load. |
| Thermal Resistance (on PCB) | 193°C/W - enables 0.64 W power dissipation on standard 40 mm × 40 mm FR-4 board. |
Pinout & Package
Package: SON8-P-0.65 (8-pin small-outline no-lead, 2.0 mm × 2.5 mm, 0.65 mm pitch, 0.017 g typical weight).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SW | Switch node | Drives external inductor; connects to internal N-ch MOSFET drain - requires low-inductance layout and snubber if needed. |
| 2 - OVP | Overvoltage sense input | Monitors boost output via resistive divider; disables switching when >32.5 V (typ.) to prevent LED/open-circuit damage. |
| 3 - FB | Current-sense feedback | Connects to REXT-to-GND; regulates LED current by maintaining 500 mV across REXT. |
| 4 - SS | Soft-start timing | Connects to capacitor; controls output voltage ramp rate to limit inrush current and reduce stress on LEDs and components. |
| 5 - EN | Enable control input | Logic-level input: ≥1.3 V = active, ≤0.4 V = shutdown; must not float - ties to VIN or GND via resistor. |
| 6 - VIN | Power supply input | 2.8–5.5 V input; bypass with ≥1.0 μF ceramic capacitor close to pin for stability and noise suppression. |
| 7 - FSET | Frequency setting | Connects to RFSET-to-GND; sets oscillator frequency per fOSC(kHz) = 66231 × RFSET(kΩ)−0.9299. |
| 8 - GND | Ground reference | Power and signal ground; must be low-impedance connection to minimize noise coupling into FB/OVP/SS paths. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated N-ch MOSFET switch | Eliminates external high-side switch; reduces BOM count and layout complexity for compact LED drivers. |
| Adjustable LED current via REXT | Supports 80 mA (typ.) with ±1.5% accuracy - enables consistent luminance without calibration in mass production. |
| Programmable switching frequency | 200 kHz–2 MHz range allows EMI optimization and trade-off between inductor size and efficiency. |
| OVP with hysteresis | 32.5 V trip / 31.5 V recovery prevents oscillation during marginal overvoltage conditions. |
| Soft-start function | Capacitor-controlled ramp prevents inrush current spikes that could damage LEDs or cause system brownout. |
Applications
| Smartphone Backlight | PDA Display Lighting |
|---|---|
Use Scenario: Driving 4–6 series white LEDs in a 3.5–5.0 inch LCD backlight module powered by a single Li-ion cell. IC Role / Device Role / Timing Role: Constant-current boost controller regulating LED string current at 60–80 mA with PWM dimming support. Use Value: Enables uniform brightness, high efficiency (>80%), and OVP protection against LED open-circuit failure in space-constrained handheld designs. | Use Scenario: Powering monochrome or color TFT LCD backlights in industrial PDAs operating across −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Primary LED driver IC providing stable current regulation and thermal-safe operation without external current-sense amplifiers. Use Value: Delivers reliable backlight performance with minimal external components and guaranteed 193°C/W thermal resistance on standard PCBs. |
| Handheld Terminal Display | Portable Medical Device UI |
Use Scenario: Illuminating ruggedized LCD panels in warehouse scanners, barcode readers, and field service terminals. IC Role / Device Role / Timing Role: High-efficiency DC/DC converter enabling long battery life and robust operation under variable load and temperature. Use Value: Supports 2–6 LED strings with ±1.5% current accuracy and soft-start to prevent display flicker during power-on sequencing. | Use Scenario: Backlighting critical UI displays in portable diagnostic tools where visual clarity and reliability are essential. IC Role / Device Role / Timing Role: Safety-conscious LED driver with OVP shutdown and precise current control to avoid LED degradation or thermal runaway. Use Value: Ensures consistent display luminance and fail-safe behavior (OVP lockout) in battery-powered medical equipment meeting IEC 60601-1 creepage requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61165DRVR | Higher max output voltage (28 V), lower quiescent current (25 μA), but no integrated OVP - requires external protection circuit. | Targeted at lower-power LED strings (≤50 mA); lacks built-in OVP hysteresis and soft-start capacitor control. | Choose when ultra-low standby power is prioritized and external OVP can be added; not drop-in for TB62763FMG,8,EL's OVP-integrated design. |
| MAX16813ATA+ | Wider input range (4.5–28 V), higher LED current capability (up to 1.5 A), but larger 16-pin TQFN package and no integrated MOSFET - needs external switch. | Designed for automotive and industrial LED lighting; unsuitable for space-constrained portable devices using Li-ion input. | Consider only for high-current, wide-input applications where PCB area and external MOSFET integration are acceptable trade-offs. |
Compared with TPS61165DRVR and MAX16813ATA+, the TB62763FMG,8,EL offers unique integration of OVP protection, soft-start control, and MOSFET switch in a compact SON8 package - making it optimal for cost-sensitive, battery-powered portable displays requiring robust open-circuit safety and minimal external components.
Availability
TB62763FMG,8,EL is available at Aetrix Electronics and suitable for smartphone backlighting, PDA display modules, and handheld terminal lighting requiring stable component supply, consistent LED current accuracy, and long-term lifecycle support.
Supply support for TB62763FMG,8,EL 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
Toshiba Electronic Devices & Storage Corporation is a Japanese semiconductor manufacturer specializing in power management, motor drivers, and analog ICs for consumer, industrial, and automotive markets.
The TB62763FMG,8,EL belongs to Toshiba's LED backlight driver product line, engineered specifically for high-efficiency, compact, and safe constant-current driving of white LED strings in battery-powered portable electronics.
FAQ
What is the maximum number of white LEDs the TB62763FMG,8,EL can drive in series?
The TB62763FMG,8,EL is specified to drive 2–6 high-current white LEDs connected in series. This is enabled by its 20 V output capability and OVP threshold of 32.5 V (typ.), allowing sufficient headroom for forward voltage drops across multiple LEDs while retaining protection margin. The actual count depends on individual LED VF and desired current - for example, six 3.2 V LEDs require ~19.2 V, well within the TB62763FMG,8,EL's operational range.
How is LED current set on the TB62763FMG,8,EL, and what accuracy is achieved?
LED current on the TB62763FMG,8,EL is set by an external resistor (REXT) connected between FB pin and GND, using the formula IF(mA) = 500 mV / REXT(Ω). The IC maintains a precise 500.0 mV (±1.5%) reference at the FB pin, achieving ±1.5% current accuracy independent of input voltage variation - confirmed in electrical characteristics tables for both 6.26 Ω and 62.6 Ω REXT values in the TB62763FMG,8,EL datasheet.
Does the TB62763FMG,8,EL support PWM dimming, and how is it implemented?
Yes, the TB62763FMG,8,EL supports PWM dimming through its EN pin. Applying a logic-level PWM signal (with VENH ≥1.3 V and VENL ≤0.4 V) directly toggles the IC between full-operation and shutdown modes, enabling precise brightness control without altering LED current magnitude. This method avoids color shift associated with analog dimming and leverages the TB62763FMG,8,EL's fast enable response and built-in soft-start to prevent visible flicker or inrush transients.
What is the purpose of the OVP pin on the TB62763FMG,8,EL, and how does its hysteresis work?
The OVP pin on the TB62763FMG,8,EL monitors output voltage via a resistive divider and disables switching when the sensed voltage exceeds 32.5 V (typ.), protecting LEDs and the IC from open-circuit overvoltage. Hysteresis ensures stable recovery: after shutdown, operation resumes only when the OVP pin voltage falls to ≤31.5 V (typ.), preventing oscillatory restart near the trip point. This 1.0 V hysteresis (VOVPHYS) is intrinsic to the TB62763FMG,8,EL's internal comparator design.
Can the TB62763FMG,8,EL operate from a 3.3 V supply, and what is its minimum input voltage?
Yes, the TB62763FMG,8,EL operates from 2.8 V to 5.5 V, so a 3.3 V supply is fully supported. At 3.3 V input, it can still drive 2–4 white LEDs depending on their forward voltage - for example, two 3.2 V LEDs require ~6.4 V output, achievable with sufficient duty cycle. The 2.8 V minimum ensures compatibility with deeply discharged Li-ion cells (down to ~2.85 V), extending usable battery life in portable applications using the TB62763FMG,8,EL.
TB62763FMG,8,EL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- 8-SMD, Flat Leads Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.8V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 80mA
- Frequency:
- 200kHz ~ 2MHz
- Dimming:
- -
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SON (2.9x2.8)
TB62763FMG,8,EL FAQ
1.How can I place an order for TB62763FMG,8,EL through Aetrix?
Please submit a Request for Quotation (RFQ) for TB62763FMG,8,EL 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 TB62763FMG,8,EL reliable?
The price and inventory of TB62763FMG,8,EL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TB62763FMG,8,EL is usually 5 days.
3.What payment methods are accepted for TB62763FMG,8,EL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TB62763FMG,8,EL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TB62763FMG,8,EL?
TB62763FMG,8,EL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TB62763FMG,8,EL 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 TB62763FMG,8,EL?
For technical support, including TB62763FMG,8,EL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TB62763FMG,8,EL requirements.
6.How does Aetrix verify that TB62763FMG,8,EL is sourced from the original manufacturer or authorized distributors?
All TB62763FMG,8,EL 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 TB62763FMG,8,EL meets industry standards.
7.What is the process for return or replacement of TB62763FMG,8,EL?
All TB62763FMG,8,EL units undergo pre-shipment inspection (PSI). If there is an issue with TB62763FMG,8,EL, 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 TB62763FMG,8,EL part is unused and in its original packaging.
Return procedure for TB62763FMG,8,EL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TB62763FMG,8,EL Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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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
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BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
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