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TP8556N External MOS Average Current Mode Step-Down Constant Current LED Driver
TP8556N External MOS Average Current Mode Step-Down Constant Current LED Driver
Single-chip solution integrating linear charger & synchronous boost. 1A rate, 93% efficiency, 10μA standby.
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| Full Part Number | TP8556N |
| Brand / Manufacturer | TPOWER |
| Datasheet | Download |
| Package Type | SOT23-6L |
| MOQ / SPQ | 3000/Reel |
| Mounting Style | SMD/SMT |
| Input Voltage Range | 5 V ~ 100 V |
| Output Current Range | 3 A ~ 6 A |
| Quiescent Current | 40 μA (typ., VDD=5V) |
| Switching Frequency | Max 220 kHz |
| Topology | Buck LED constant-current driver |
| Drive Capability | External MOSFET gate driver, 550 mA source / 350 mA sink |
| Supply Voltage | VDD internal clamp 5.6 V; VIN 5 V ~ 100 V |
| Operating Temperature | -40°C ~ +190°C (junction) |
| Semiconductor Material | Silicon |
| LED String Count | Multiple LEDs |
| Dimming Method | Analog dimming |
| Protection Features | LED output short-circuit protection, LED output over-current protection, chip thermal intelligent control, VDD supply under-voltage protection |
| Packaging | Tape & Reel |
TP8556N is a step-down constant-current LED driver operating with a fixed off-time control scheme for high-efficiency driving of multiple LEDs. The device adopts closed-loop average current mode constant-current regulation, making the output current insensitive to inductance variations in system applications. This significantly improves the constant-current accuracy of the output current, and the IC is particularly suitable for non-isolated step-down LED constant-current driving circuits with an input voltage range of 5 V to 100 V.
KEY FEATURES
- Wide system input voltage range: 5 V ~ 100 V
- Fixed Off-Time Control Mode
- Closed-Loop Average Current Mode Constant Current Control
- ± 5% LED Output Current Accuracy
- LED High/Low Brightness Output Mode
- Insensitive to inductance variation
- High system operating efficiency
- Integrated analog dimming function
- Built-in 5.6 V Zener diode for VDD pin
- LED output short-circuit protection
- Intelligent IC thermal control
- Package Size: SOT23-6L
APPLICATION
- Automotive Lighting
- E-Bike Lighting
- High-Power Flashlight
- LED Backlight Driver
Download TP8556N Datasheet
What is the Minimum Order Quantity (MOQ)?
What is the Minimum Order Quantity (MOQ)?
Standard MOQ is 1 Reel. Sample orders are accepted in smaller quantities. Please contact us for custom arrangements.
Are your products guaranteed authentic?
Are your products guaranteed authentic?
All products are genuine, factory-sourced components. Certificate of Analysis (COA) and Datasheet are available upon request. Third-party inspection can be arranged if needed.
What is your sample policy?
What is your sample policy?
Standard samples require a sample fee, which is deductible upon bulk order placement. Free evaluation samples are available for qualified companies. Shipping costs are covered by the buyer or charged to the buyer's courier account.
What payment methods are accepted?
What payment methods are accepted?
We accept T/T (Wire Transfer) with 80% deposit and balance before shipment, PayPal or credit card for small orders, and net terms for established customers upon approval.
What is the lead time?
What is the lead time?
In-stock items ship within 3–7 business days. Custom or bulk orders take 4–12 weeks depending on capacity and materials. Exact lead time will be confirmed upon order placement.
