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Renesas EL7630ICZ-T7A
- Part No.:
- EL7630ICZ-T7A
- Manufacturer:
- Renesas
- Category:
- LED Drivers
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
EL7630ICZ-T7A.pdf
- Description:
- IC LED DRV RGLTR PWM SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,667
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Product details
Overview
EL7630ICZ-T7A from Intersil is a white LED boost regulator IC designed for portable backlighting applications. It delivers up to 27V output from a 2.7V–5.5V input, operates at 1.35MHz constant-frequency PWM, achieves up to 86% efficiency, and supports up to 6-series or 15-total LEDs with enable/PWM dimming control - used in cell phone display backlighting.
For engineers reviewing the EL7630ICZ-T7A datasheet, EL7630ICZ-T7A pinout, EL7630ICZ-T7A application, or EL7630ICZ-T7A equivalent, key selection criteria include its 6-lead SC-70 package, 95mV feedback reference, 350mA switch current limit, and integrated analog/PWM dimming capability for precise brightness control in space-constrained handheld designs.
Technical Context
The EL7630ICZ-T7A implements a constant-frequency, current-mode PWM controller with internal 1.35MHz oscillator and 95mV bandgap-referenced feedback amplifier. Its architecture includes integrated FET driver, GM amplifier compensation, and PWM comparator for stable regulation across line and load variations.
It supports dual dimming modes: ENAB-pin PWM dimming (400Hz–1kHz) for digital brightness control and analog dimming via external DC voltage applied through resistor divider, enabling flexible integration into host microcontroller-based lighting systems without additional DACs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion or Li-poly battery systems without pre-regulation. |
| Max Output Voltage | 27V - sufficient to drive up to six white LEDs in series (typ. 3.3V each). |
| Switching Frequency | 1.35MHz (typ.) - enables use of small 22µH inductors and 0.22µF ceramic output capacitors. |
| Feedback Reference | 95mV (typ.) - sets LED current via external RSET; low value minimizes power loss in sense resistor. |
| Switch Current Limit | 350mA (max) - protects internal MOSFET during startup, short-circuit, or overcurrent transients. |
| Quiescent Current | 1.0mA (typ., ENAB = 3V) - ensures low standby power draw when active; drops to <1µA in shutdown. |
| Operating Temp | −40°C to +85°C - qualified for consumer handheld and industrial portable equipment environments. |
Pinout & Package
EL7630ICZ-T7A is housed in a 6-lead SC-70 package (P6.049), optimized for compact portable PCB layouts with separate PGND and GND pins to isolate high-current switching paths from sensitive analog feedback.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX (Pin 1) | Switch Node | Connects to inductor and Schottky diode anode; carries pulsed high-current switching waveform. |
| GND (Pin 2) | Signal Ground | Reference for FB, ENAB, and internal bias circuits; must be routed separately from PGND. |
| FB (Pin 3) | Feedback Input | Senses voltage across RSET to regulate LED current; requires local 0.1µF decoupling. |
| ENAB (Pin 4) | Enable/Dimming Control | Active-high logic input; also accepts PWM signal (400Hz–1kHz) or analog DC voltage for brightness control. |
| PGND (Pin 5) | Power Ground | High-current return path for LX switch and internal FET; must connect directly to large copper pour. |
| VIN (Pin 6) | Input Supply | Accepts 2.7V–5.5V input; requires local 1µF ceramic bypass capacitor near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-frequency PWM control | 1.35MHz operation enables predictable EMI filtering and consistent inductor sizing across designs. |
| Dual dimming interface | Single ENAB pin supports both PWM and analog dimming - eliminates need for external dimming IC or DAC. |
| Integrated current-sense amplifier | 95mV reference reduces RSET power dissipation and improves thermal performance in battery-powered devices. |
| Separate PGND/GND pins | Minimizes noise coupling from switching currents into feedback and enable circuitry for stable regulation. |
| RoHS-compliant packaging | Pb-free + anneal finish (matte tin) ensures compatibility with both SnPb and lead-free reflow processes. |
Applications
| Cell Phone Display Backlight | PDA Main Screen Lighting |
|---|---|
Use Scenario: Driving 4–6 white LEDs behind TFT-LCD in slim clamshell or slider form factor. IC Role / Device Role / Timing Role: Boost regulator providing regulated current source with PWM-dimming synchronized to display frame rate. Use Value: 86% efficiency extends battery life; 1.35MHz switching allows ultra-compact 22µH inductor and 0.22µF output cap. | Use Scenario: Powering high-brightness QVGA LCD in enterprise PDA with variable ambient light sensing. IC Role / Device Role / Timing Role: Constant-current LED driver with analog dimming input tied to ambient light sensor ADC output. Use Value: 95mV FB reference enables precise current setting with low-power RSET; −40°C to +85°C rating ensures outdoor reliability. |
| Handheld Medical Device Indicator | Portable Barcode Scanner UI Light |
Use Scenario: Illuminating status LEDs and small monochrome display in battery-operated diagnostic tool. IC Role / Device Role / Timing Role: Single-chip solution for multi-LED current regulation with ENAB-controlled on/off sequencing. Use Value: <1µA shutdown current preserves battery during idle; SC-70 footprint saves board area in tight enclosures. | Use Scenario: Backlighting OLED menu display and focus-assist LEDs in handheld scanner with intermittent usage. IC Role / Device Role / Timing Role: High-efficiency boost converter delivering stable current despite varying battery voltage (3.0–4.2V). Use Value: 2.7V minimum VIN supports full brightness down to end-of-discharge; 27V output headroom accommodates LED aging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL97634 | Higher integration: 4-channel independent current sinks, 2.5MHz switching, I²C programmability. | Targeted at multi-zone RGBW backlighting; not pin-compatible; requires firmware support. | Select ISL97634 for advanced color-tuning or multi-string independent control; EL7630ICZ-T7A remains optimal for cost-sensitive single-string designs. |
| TPS61160DRVR | Similar 6-pin SOT-23 package, 1.2MHz switching, but uses 200mV FB reference and lacks analog dimming. | Requires external PWM generator; less efficient at low LED currents due to higher FB voltage. | Choose TPS61160DRVR only if TI supply chain preference overrides need for analog dimming or 95mV precision current setting. |
Compared with ISL97634 and TPS61160DRVR, EL7630ICZ-T7A offers the lowest component count for single-string PWM/analog dimming, smallest SC-70 footprint among alternatives, and best-in-class 95mV feedback accuracy - making it ideal for legacy or cost-optimized portable backlight designs where programmability is unnecessary.
Availability
EL7630ICZ-T7A is available at Aetrix Electronics and suitable for cell phone backlighting, PDA display lighting, and handheld medical device indicator applications requiring stable component supply and long-term obsolescence management.
Supply support for EL7630ICZ-T7A 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
Intersil Corporation (now part of Renesas Electronics) is a U.S.-based analog and power management IC designer known for high-performance, low-power solutions targeting portable and industrial markets.
The EL7630 product line was developed specifically for space-constrained, battery-powered white LED backlighting - emphasizing high efficiency at light loads, minimal external component count, and dual-mode dimming flexibility without added ICs.
FAQ
What is the recommended inductor value for EL7630ICZ-T7A in a 4-LED string application?
The EL7630ICZ-T7A performs optimally with a 22µH shielded power inductor (e.g., Sumida CDRH5D28R-220NC) for 4-LED strings at 20mA. This value balances continuous conduction mode stability, RMS loss, and physical size. Inductor DCR should be ≤150mΩ, and saturation current ≥500mA to avoid clipping under peak load.
Does EL7630ICZ-T7A support analog dimming, and how is it implemented?
Yes, EL7630ICZ-T7A supports analog dimming via the ENAB pin. Apply a DC voltage (0.6V–2.5V) through an external resistor divider (R1/R2) to modulate LED current linearly. Equation 5 in the FN7371 datasheet defines the relationship between dimming voltage and output current, enabling smooth brightness control without PWM artifacts.
What is the maximum number of LEDs that can be driven by EL7630ICZ-T7A, and what configuration is required?
EL7630ICZ-T7A can drive up to 6 white LEDs in series (at ~3.3V each, totaling ≤20V forward drop) or up to 15 LEDs total using series-parallel configurations. For >6 LEDs, a mirror current balance circuit (as shown in Figure 12 of FN7371) is required to ensure uniform brightness across parallel branches.
Is EL7630ICZ-T7A pin-compatible with other white LED drivers in SC-70 packages?
No - while the datasheet states "same pinout as competitive products," no specific second-source part is named or verified as pin-compatible. EL7630ICZ-T7A's unique PGND/GND separation and 6-pin SC-70 layout differ from standard 5-pin TSOT or SOT-23 LED drivers; PCB redesign is required for substitution.
What protection features does EL7630ICZ-T7A include, and how are they implemented?
EL7630ICZ-T7A includes overcurrent protection (350mA switch limit), thermal shutdown (125°C junction), and open-load detection via feedback monitoring. When FB falls near 0V (e.g., LED string open), the controller enters high-duty-cycle mode; external zener-based OVP (Figure 10) is recommended to clamp LX voltage below 27V and prevent damage.
EL7630ICZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 27V
- Current - Output / Channel:
- 350mA (Switch)
- Frequency:
- 1.35MHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
EL7630ICZ-T7A FAQ
1.How can I place an order for EL7630ICZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7630ICZ-T7A 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 EL7630ICZ-T7A reliable?
The price and inventory of EL7630ICZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7630ICZ-T7A is usually 5 days.
3.What payment methods are accepted for EL7630ICZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7630ICZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7630ICZ-T7A?
EL7630ICZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7630ICZ-T7A 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 EL7630ICZ-T7A?
For technical support, including EL7630ICZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7630ICZ-T7A requirements.
6.How does Aetrix verify that EL7630ICZ-T7A is sourced from the original manufacturer or authorized distributors?
All EL7630ICZ-T7A 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 EL7630ICZ-T7A meets industry standards.
7.What is the process for return or replacement of EL7630ICZ-T7A?
All EL7630ICZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with EL7630ICZ-T7A, 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 EL7630ICZ-T7A part is unused and in its original packaging.
Return procedure for EL7630ICZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
EL7630ICZ-T7A 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
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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