LV52511MNZTXG - 24-Ch Bus-Controlled Linear LED Driver | onsemi
MPN: LV52511MNZTXG ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.47 | $34.70 |
| 100 | $3.08 | $308.00 |
| 500 | $2.74 | $1,370.00 |
| 1,000 | $2.41 | $2,410.00 |
| 3,000 | $2.05 | $6,150.00 |
LV52511MNZTXG Overview
A linear LED driver (also called a constant-current sink) is a specialized driver topology that regulates the current through each LED string with a regulated current source or sink rather than by switching. Linear drivers sit within the broader power-management IC hierarchy (LED driver -> display driver -> power management IC -> semiconductor) and are favored over switching drivers in noise-sensitive applications such as LCD backlights, where any PWM or switching ripple would couple into the panel and cause visible artifacts. Compared with a switch-mode LED driver, a linear driver dissipates excess VIN-VLED as heat but eliminates EMI and provides flicker-free DC current.
Key features of the LV52511MNZTXG include 24 individually controllable constant-current outputs, an 8-bit PWM/ON-time resolution per channel, a single-wire or two-wire serial control interface, an integrated current reference set by one external resistor, and a wide supply range suitable for direct 3.3 V or 5 V logic rails. The 48-QFN (7x7) package provides a low thermal resistance that supports the dissipation of the linear drop, and the QSFP-style footprint simplifies PCB layout.
From an architectural standpoint, the LV52511MNZTXG uses an array of matched current mirrors steered by a duty-cycle register bank. Each channel is modulated by 8-bit ON-time data loaded through the serial bus, and the three 8-channel color blocks (R, G, B) can be addressed independently for color-mixing or for driving three separate LED zones. The internal reference is multiplied by a fixed gain to set Iout, which is then trimmed for channel-to-channel matching across all 24 outputs.
Typical applications include LCD panel RGB backlighting, RGB LED matrix signs and decorative lighting, large-pixel LED displays, multi-zone indicator panels, and small-format TFT display backlights. The wide channel count and serial bus also suit the device to automotive interior ambient lighting and consumer appliance status indicators.
When designing with the LV52511MNZTXG, place the external reference resistor close to the Iref pin to minimize noise pickup and provide a small filter network on the supply rail. Because the device operates in the linear region, total power dissipation (Vsupply x Isum) must be checked against the package thermal resistance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet alone.
Drop-in alternatives for LV52511MNZTXG — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LV52511MNTXG
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LV52511MN
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
NLSF595
✅ Drop-In📋 Reference alternative (not in catalog)
LV52511MNZTXG Maximum Ratings & Electrical Characteristics
| Product Type | Linear LED Driver IC |
| Number of Outputs | 24 channels |
| Output Configuration | Linear constant-current sink |
| Per-Channel Output Current | 2.5 mA (typ) |
| Channel Grouping | 3 blocks of 8 channels (RGB-ready) |
| Resolution per Channel | 8-bit ON-time / duty cycle |
| Control Interface | Serial bus (bus-controlled) |
| Reference Current Setting | External resistor at Iref pin |
| Topology | Linear low-side driver |
| Package | 48-QFN (7x7 mm) |
| Mounting Type | Surface Mount |
| Dimming Method | 8-bit PWM ON-time modulation |
| RoHS Status | Compliant |
| Datasheet Document | Refer to onsemi LV52511MN datasheet |
LV52511MNZTXG Pin Configuration
| Pin 1 | OUT0 — Constant-current output channel 0 |
| Pin 2 | OUT1 — Constant-current output channel 1 |
| Pin 3 | OUT2 — Constant-current output channel 2 |
| Pin 4 | OUT3 — Constant-current output channel 3 |
| Pin 5 | OUT4 — Constant-current output channel 4 |
| Pin 6 | OUT5 — Constant-current output channel 5 |
| Pin 7 | OUT6 — Constant-current output channel 6 |
| Pin 8 | OUT7 — Constant-current output channel 7 |
| Pin 9 | VCC — Logic supply voltage |
| Pin 10 | GND — Ground |
| Pin 11 | IREF — Reference current setting - external resistor to GND |
| Pin 12 | SDI — Serial data input |
| Pin 13 | CLK — Serial clock input |
| Pin 14 | LE — Latch enable input |
| Pin 15 | OE — Output enable (active low) |
| Pin 16 | OUT8 — Constant-current output channel 8 |
| Pin 17 | OUT9 — Constant-current output channel 9 |
| Pin 18 | OUT10 — Constant-current output channel 10 |
| Pin 19 | OUT11 — Constant-current output channel 11 |
| Pin 20 | OUT12 — Constant-current output channel 12 |
| Pin 21 | OUT13 — Constant-current output channel 13 |
| Pin 22 | OUT14 — Constant-current output channel 14 |
| Pin 23 | OUT15 — Constant-current output channel 15 |
| Pin 24 | OUT16 — Constant-current output channel 16 |
| Pin 25 | OUT17 — Constant-current output channel 17 |
| Pin 26 | OUT18 — Constant-current output channel 18 |
| Pin 27 | OUT19 — Constant-current output channel 19 |
| Pin 28 | OUT20 — Constant-current output channel 20 |
| Pin 29 | OUT21 — Constant-current output channel 21 |
| Pin 30 | OUT22 — Constant-current output channel 22 |
| Pin 31 | OUT23 — Constant-current output channel 23 |
| Pin 32 | GND — Ground |
| Pin 33 | NC — Not connected (per datasheet) |
| Pin 34 | NC — Not connected (per datasheet) |
| Pin 35 | NC — Not connected (per datasheet) |
| Pin 36 | NC — Not connected (per datasheet) |
| Pin 37 | NC — Not connected (per datasheet) |
| Pin 38 | NC — Not connected (per datasheet) |
| Pin 39 | NC — Not connected (per datasheet) |
| Pin 40 | NC — Not connected (per datasheet) |
| Pin 41 | NC — Not connected (per datasheet) |
| Pin 42 | NC — Not connected (per datasheet) |
| Pin 43 | NC — Not connected (per datasheet) |
| Pin 44 | NC — Not connected (per datasheet) |
| Pin 45 | NC — Not connected (per datasheet) |
| Pin 46 | NC — Not connected (per datasheet) |
| Pin 47 | NC — Not connected (per datasheet) |
| Pin 48 | EP — Exposed pad - thermal and ground connection |
Typical Applications
LV52511MNZTXG is suitable for 7 applications: TFT-LCD RGB Backlighting, RGB LED Matrix Displays and Signage, Automotive Interior Ambient Lighting, Industrial Multi-Zone Status Indicators, Consumer Appliance Front-Panel Indicators, Medical Device Display Backlights, IoT Smart-Home Status Panels.
TFT-LCD RGB Backlighting
The LV52511MNZTXG's 24 channels divided into three 8-bit color blocks (RGB) directly drive the red, green, and blue LED strings behind a small TFT-LCD module. With 2.5 mA per channel and 8-bit ON-time resolution, the part delivers 256 brightness steps per color, sufficient for smooth gamma-corrected backlight dimming. The linear topology eliminates switching ripple, which is critical when the LEDs sit immediately behind the LCD polarizers - any switching noise would otherwise show as horizontal stripes or flicker on the panel.
Recommended
RGB LED Matrix Displays and Signage
The LV52511MNZTXG natively addresses an 8-pixel RGB matrix - 24 channels = 3 colors x 8 pixels - making it ideal for small-format decorative matrices and pixel-art panels. Each color block has its own 8-bit duty-cycle register, so per-color global brightness can be set independently while individual pixel data is scanned in. The 2.5 mA per channel suits low-power indicator-grade RGB LEDs (such as WS2812-style discrete packages driven as a matrix), and the QFN-48 footprint keeps the driver footprint compact relative to TSSOP alternatives.
Recommended
Automotive Interior Ambient Lighting
Inside automotive cabins, ambient lighting must be flicker-free and EMI-quiet to avoid coupling into AM/FM receivers and infotainment audio. The LV52511MNZTXG's linear constant-current sinks produce no switching noise, and the 24 channels cover multiple zones (footwell, door panels, dashboard strips). Channel matching across the 24 outputs keeps color temperature consistent zone-to-zone. For 12 V automotive rails, a small LDO pre-regulator or current-limiting resistor protects the linear drop from exceeding the package thermal budget at full channel count.
Recommended
Industrial Multi-Zone Status Indicators
Industrial control panels often need 20-30 individual status LEDs (RUN, FAULT, COMM, per-channel indicators, etc.) with synchronized brightness and a simple serial interface to the host MCU. The LV52511MNZTXG handles up to 24 such indicators in a single 48-QFN, replacing a discrete resistor-per-LED approach. The serial bus allows the host to update all 24 channels with a single short write transaction, freeing MCU GPIO. The 2.5 mA current is sufficient for high-efficiency indicator LEDs viewed across a control-room distance.
Recommended
Consumer Appliance Front-Panel Indicators
Appliances such as washers, ovens, and HVAC thermostats use dense arrays of indicator LEDs for status (Wash, Rinse, Spin, Done, Error). The LV52511MNZTXG's 24 channels can drive all of these from a single serial bus, reducing BOM count and PCB area. The linear topology means no audible coil whine, which matters in near-silent appliance environments. The 48-QFN (7x7) package fits comfortably behind a small user-interface PCB segment shared with the main control MCU.
Recommended
Medical Device Display Backlights
Patient monitors, infusion pumps, and handheld diagnostic devices need low-noise display backlights that will not introduce artifacts into the display or couple into sensitive analog front-ends. The LV52511MNZTXG's DC linear drive ensures no switching EMI reaches the display or adjacent measurement circuits. With 24 channels split into RGB blocks, the same chip can backlight both the main graphic TFT and a secondary status TFT in dual-display medical products. Reliability is enhanced by the absence of inductive switching components.
Recommended
IoT Smart-Home Status Panels
Smart-home hubs and thermostats present user status via dense multi-color LED arrays (network status, sensor health, mode indicators). The LV52511MNZTXG drives 24 such indicators from a single serial bus attached to the hub's Wi-Fi/BLE SoC. The 2.5 mA per channel is appropriate for the small SMD indicator LEDs used in compact smart-home enclosures. Low quiescent draw also keeps standby power compatible with always-on IoT devices.
Recommended
Recommended Products Summary
Engineering reference data for LV52511MNZTXG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LV52511MNTXG | LV52511MN | NLSF595 |
|---|---|---|---|---|
| Brand | onsemi | onsemi | onsemi | onsemi |
| Package | 48-QFN (7x7 mm) | 48-QFN (7x7 mm) - same | 48-QFN (7x7 mm) - same | 48-QFN (7x7 mm) - same |
| Number of Channels | 24 | 24 | 24 | 24 |
| Channel Grouping (RGB) | 3 blocks of 8 channels (RGB) | 3 blocks of 8 channels (RGB) | 3 blocks of 8 channels (RGB) | Shift register (no RGB grouping) |
| Control Interface | Serial bus (clock + data + latch) | Serial bus | Serial bus | Shift register (simpler) |
| Topology | Linear constant-current sink | Linear constant-current sink | Linear constant-current sink | Shift-register current sink |
| Output Enable Pin | Yes (OE active-low) | Yes (OE active-low) | Yes (OE active-low) | Yes |
Key Differentiators
- Three independent 8-bit color blocks natively mapped to RGB (vs NLSF595)
- Integrated OE (output enable) pin for blanking (vs NLSF595)
- Pin-compatible with onsemi LV52511MN family for second-source flexibility (vs Generic third-party 24-channel LED drivers)
Design Notes
Estimated: at a 5 V supply and all 24 channels active at 2.5 mA, total package dissipation is approximately (5 V - Vled) x 0.060 A. With Vled ~ 2.0 V, this is roughly 0.18 W - well within the QFN-48 thermal budget. However, in a 12 V system where Vled drops only to 3.0 V, dissipation rises to ~0.54 W and the exposed pad must be soldered to a continuous ground copper pour of at least 100 mm^2 on the top and inner PCB layers to keep junction temperature rise acceptable.
Route the serial-bus signals (SDI, CLK, LE, OE) as short traces away from the OUT lines to minimize coupling. Place a 100 nF decoupling capacitor as close as possible to the VCC pin and a 10 uF bulk capacitor on the LED supply rail near the device. Solder the exposed thermal pad to a continuous ground plane with multiple thermal vias (0.3 mm drill, 1.0 mm pitch) for lowest theta-JA. Keep the Iref resistor trace short and shield it with a ground pour to prevent noise injection into the reference current.
Do not float the OE pin - if unused, tie it to GND to keep outputs enabled or to VCC to disable them. Verify that the maximum LED supply voltage does not exceed the OUT pin absolute maximum rating (refer to the onsemi datasheet absolute maximum table); exceeding it will permanently damage the current-mirror pass transistor. The Iref resistor sets absolute output current for all 24 channels - one bad resistor affects every output simultaneously. Finally, observe the latch-enable timing diagram in the datasheet; an early or late LE pulse can corrupt the entire brightness frame.
Compliance Information
RoHS and REACH compliance per onsemi product page. Standard part is not AEC-Q100 qualified; for automotive interior lighting confirm the specific automotive-grade onsemi variant if available.
