CAT9532HV6I-GT2 - 16-Bit I2C LED Driver 24-TQFN | onsemi
N.º da peça: CAT9532HV6I-GT2 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $1.85 | $1,85 |
| 10 | $1.66 | $16,60 |
| 100 | $1.48 | $148,00 |
| 500 | $1.31 | $655,00 |
| 1.000 | $1.15 | $1.150,00 |
| 3.000 | $1 | $3.000,00 |
CAT9532HV6I-GT2 Visão geral
An LED driver IC is a semiconductor device that translates low-current logic-level control signals into higher-current outputs capable of directly driving discrete LEDs or LED arrays. In the broader system hierarchy, the CAT9532HV6I-GT2 sits in the power management and display backlight category as a programmable constant-current-style sink, controlled by a serial bus; it is commonly used as a co-processor offload for microcontrollers that lack sufficient GPIO pins or PWM channels to drive many LEDs simultaneously.
Key features include per-channel programmable on/off, two internal PWM generators (PWM0/PWM1) for shared duty-cycle control, software programmable blink rates from 0.25 Hz to 7.81 Hz with duty cycle of 0% to 99.6%, hardware address pins (A0/A1/A2) allowing up to 8 devices on the same I2C bus (128 LEDs total), and an open-drain active-low interrupt output. The 24-TQFN-EP package provides low junction-to-board thermal resistance for reliable continuous sink operation.
Internally the CAT9532HV6I-GT2 uses a CMOS logic core with two 8-bit configuration registers, two 8-bit frequency-prescaler registers, and PWM duty-cycle registers. A single 6 MHz internal oscillator drives both PWM channels independently, allowing mixed-rate blinking across the 16 outputs without host CPU intervention.
Typical applications include keypad backlighting, status-indicator LED arrays, RGB LED string control, white-good front-panel indicators, automotive interior lighting (infotainment / instrument clusters when paired with Q-grade parts), and any host-limited system that needs 16+ individually dimmable LEDs.
When designing with this part, observe the 25 mA per-pin continuous sink rating, derate for ambient temperature, and place a 0.1 uF decoupling capacitor within 5 mm of VCC. The exposed pad (EP) must be soldered to a thermal land of at least 16 mm^2 of inner-layer copper.
This page synthesizes distributor pricing, drop-in alternatives from onsemi / NXP / TI, application references, and practical design notes not consolidated on the manufacturer datasheet PDF.
Alternativas drop-in para CAT9532HV6I-GT2 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com CAT9532HV6I-GT2 (mesmo formato e footprint) — diferindo em Device Type, Package.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
CAT9532YI-GT2
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
CAT9532WI-GT2
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
CAT9532HV6I
✅ Drop-In✓ Em estoque
$1.32 / unidade
Ver ficha técnica →PCA9532PW,118
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TCA9532PWR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
CAT9532HV6I-GT2 Classificações máximas e características elétricas
| Device Type | I/O Port Expander with LED Dimming |
| Número de saídas | 16 |
| Output Sink Current per Channel | 25 mA |
| Supply Voltage (VCC) | 2.3 V to 5.5 V |
| Interface | I2C / SMBus |
| Maximum I2C Clock Frequency | 400 kHz |
| I2C Addresses per Bus | 8 (A0/A1/A2 hardware pins) |
| Internal PWM Generators | 2 (PWM0, PWM1) |
| Programmable Blink Frequency Range | 0.25 Hz to 7.81 Hz |
| Programmable Duty Cycle Range | 0 % to 99.6 % |
| Technology | CMOS |
| Temperatura de operação | -40 C to +85 C |
| Encapsulamento | 24-TQFN-EP (4 x 4 mm) |
| Tipo de montagem | Surface Mount |
| RoHS / Halogen-Free Status | RoHS compliant, halogen-free, BFR-free |
| Interrupt Output | Active-low, open-drain |
| Input Voltage Tolerance | 5.5 V tolerant I/Os (over VCC range) |
Configuração de pinos do CAT9532HV6I-GT2
| Pino 1 | A0 — Hardware address input 0 |
| Pino 2 | LED0 — I/O 0 (output sink 25 mA) |
| Pino 3 | LED1 — I/O 1 (output sink 25 mA) |
| Pino 4 | LED2 — I/O 2 (output sink 25 mA) |
| Pino 5 | LED3 — I/O 3 (output sink 25 mA) |
| Pino 6 | LED4 — I/O 4 (output sink 25 mA) |
| Pino 7 | LED5 — I/O 5 (output sink 25 mA) |
| Pino 8 | LED6 — I/O 6 (output sink 25 mA) |
| Pino 9 | LED7 — I/O 7 (output sink 25 mA) |
| Pino 10 | INT — Interrupt output (active-low, open-drain) |
| Pino 11 | NC — Not connected (per datasheet) |
| Pino 12 | LED8 — I/O 8 (output sink 25 mA) |
| Pino 13 | LED9 — I/O 9 (output sink 25 mA) |
| Pino 14 | LED10 — I/O 10 (output sink 25 mA) |
| Pino 15 | LED11 — I/O 11 (output sink 25 mA) |
| Pino 16 | LED12 — I/O 12 (output sink 25 mA) |
| Pino 17 | LED13 — I/O 13 (output sink 25 mA) |
| Pino 18 | LED14 — I/O 14 (output sink 25 mA) |
| Pino 19 | LED15 — I/O 15 (output sink 25 mA) |
| Pino 20 | GND — Ground |
| Pino 21 | SCL — I2C serial clock |
| Pino 22 | SDA — I2C serial data |
| Pino 23 | A1 — Hardware address input 1 |
| Pino 24 | VCC — Supply voltage (2.3 V to 5.5 V) |
Aplicações típicas
CAT9532HV6I-GT2 é adequado para 7 aplicaçãos: Keypad Backlighting, RGB LED String Control, White-Good Front-Panel Indicators, Automotive Interior Lighting (Non-Safety), Server Status LED Array, IoT Device Status Indicators, Medical Device Front-Panel.
Keypad Backlighting
The CAT9532HV6I-GT2 is ideal for keypad backlighting in industrial HMIs, consumer appliances, and security panels. Its 16 outputs can each sink 25 mA to directly drive a backlight LED without external transistors, while the on-chip PWM generators (PWM0/PWM1) allow software-controlled fade-in/fade-out without host CPU load. The 400 kHz I2C bus updates brightness registers in microseconds, enabling responsive user feedback in touch panels. The 24-TQFN-EP footprint is compact (4x4 mm) for space-constrained handheld designs.
Recomendado
RGB LED String Control
The CAT9532HV6I-GT2 controls RGB LED strings by assigning three of its 16 channels to red, green, and blue anodes (or cathodes). Each color channel can be routed to PWM0 or PWM1 for independent dimming, while the 8 hardware-selectable I2C addresses allow daisy-chaining multiple devices to extend the LED count. With 25 mA per pin and 5.5 V tolerant I/Os, the CAT9532 can drive both common-anode and common-cathode RGB LEDs directly. This suits decorative lighting, gaming peripherals, and smart-home status indicators.
Recomendado
White-Good Front-Panel Indicators
The CAT9532HV6I-GT2 drives status LEDs on white-good front panels such as washing machines, refrigerators, and microwaves. Its industrial -40 C to +85 C operating range, RoHS compliance, and 25 mA per-channel sink handle long-duration on-state without thermal stress. The I2C interface reduces microcontroller GPIO consumption, freeing pins for touch sensors and motor-control PWMs. The compact 24-TQFN-EP package fits behind small LCD or 7-segment display boards in slim appliance chassis.
Recomendado
Automotive Interior Lighting (Non-Safety)
The CAT9532HV6I-GT2 is suitable for non-safety automotive interior applications such as infotainment backlights, footwell LEDs, and door-status indicators. While the standard part is not AEC-Q100 qualified, onsemi offers Q-grade variants within the broader CAT95xx portfolio for safety-critical use. Its 25 mA sink and 2.3-5.5 V supply align with typical 5 V automotive rails. Two independent PWM channels enable breathing/heartbeat effects for premium-feel ambient illumination.
Recomendado
Server Status LED Array
The CAT9532HV6I-GT2 drives per-bay or per-disk status lights in storage arrays and networking switches. Its 400 kHz bus speed and 8-device addressability enable a single I2C master (such as a BMC) to control up to 128 LEDs - covering 8 drives per bay across 16 bays. The active-low interrupt output alerts the host to button-press events or fault inputs from the same 16 pins (each can be reconfigurable as input), reducing component count.
Recomendado
IoT Device Status Indicators
The CAT9532HV6I-GT2 expands I/O for IoT end-nodes with constrained host MCUs. A small Cortex-M0 or RISC-V host can drive up to 16 status/warning LEDs over a 2-wire I2C bus, freeing the host's GPIO for sensor I/O and radio control. The 2.3 V minimum supply aligns with single-cell Li-ion or 3.3 V regulated rails. Low stand-by current makes it suitable for battery-powered smart-home sensors that wake periodically to update LED indicators.
Recomendado
Medical Device Front-Panel
The CAT9532HV6I-GT2 is appropriate for medical device front-panel indicators where reliability and predictable LED behavior matter. Its hardware address pins allow up to 8 devices on a single I2C bus, supporting large multi-zone displays on patient monitors and diagnostic equipment. The 25 mA per-channel sink comfortably drives high-visibility indicators at 10-20 mA typical operating current. Industrial -40 C to +85 C operation covers hospital and lab environments.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para CAT9532HV6I-GT2 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | CAT9532YI-GT2 | CAT9532WI-GT2 | CAT9532HV6I | PCA9532PW,118 | TCA9532PWR |
|---|---|---|---|---|---|---|
| Brand | onsemi | onsemi (same brand) | onsemi (same brand) | onsemi (same brand) | NXP Semiconductors (cross-brand) | Texas Instruments (cross-brand) |
| Package | 24-TQFN-EP (4x4) | 24-TQFN-EP (4x4) - same | 24-TQFN-EP (4x4) - same | 24-TQFN-EP (4x4) - same | 24-TSSOP - same pin count, different footprint | 24-TSSOP - same pin count, different footprint |
| Number of Outputs | 16 | 16 | 16 | 16 | 16 | 16 |
| Output Sink Current per Channel | 25 mA | 25 mA | 25 mA | 25 mA | 25 mA | 25 mA |
| Supply Voltage Range | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| I2C Maximum Clock | 400 kHz | 400 kHz | 400 kHz | 400 kHz | 400 kHz | 400 kHz |
| Internal PWM Generators | 2 (PWM0, PWM1) | 2 | 2 | 2 | 2 | 2 |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C (W-suffix temp class) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Principais diferenciais
- True onsemi catalog 16-bit LED dimmer (vs PCA9532PW,118 (NXP))
- Compact 4x4 mm TQFN-EP package (vs TCA9532PWR (TI TSSOP-24))
- RoHS / halogen-free / BFR-free (vs PCA9532PW,118 (NXP))
- 8 hardware-selectable I2C addresses (vs CAT9532YI-GT2 (same family))
Notas de projeto
Estimated: total supply current for CAT9532HV6I-GT2 scales with the number of enabled LED outputs and their duty cycle. Worst-case continuous sink of 16 channels x 25 mA x 100 % duty = 400 mA from VCC, but each LED typically drops 1.8-3.3 V, so system-level dissipation is limited. Place a 0.1 uF decoupling capacitor within 5 mm of the VCC pin (pin 24) and a 10 uF bulk capacitor on the host rail to handle transient inrush when many LEDs are enabled simultaneously.
Estimated: at full 16-channel 25 mA sink with VCC = 5 V and each LED forward voltage around 2 V, the chip dissipates approximately P_d = (16 x 25 mA) x (5 V - 2 V) = 1.2 W total. The 24-TQFN-EP exposed pad must be soldered to a thermal land of at least 16 mm^2 of inner-layer copper connected to GND. Without proper EP soldering, junction temperature can exceed 125 C at ambient > 60 C.
Route SCL and SDA away from switching converter or motor-drive PWM edges to prevent logic errors. Add 4.7 kohm pull-up resistors on SCL and SDA (not internal to the part). Keep I2C traces short (< 50 mm) to avoid capacitive loading above 400 pF, which would degrade the 400 kHz rise time. Place A0/A1/A2 address pins with 100 kohm pull-ups or pull-downs to VCC or GND for fixed addressing.
Common pitfalls include: (1) forgetting to clear the interrupt latch after servicing - INT remains asserted until the input port register is read; (2) misconfiguring the LS0/LS1 LED output selectors when assigning PWM0/PWM1 routing - the bit order is reversed in the datasheet table; (3) assuming default I2C address is 0x60 - actual address depends on A0/A1/A2 pins and is 0x60 + (A2<<2)|(A1<<1)|A0. Always power-cycle after address-pin changes to reset the device.
Use a 4-layer PCB with a dedicated ground plane beneath the CAT9532HV6I-GT2 footprint. The exposed pad (EP) on pin 11 / thermal land must have at least 8 thermal vias (0.3 mm drill, 0.5 mm pad) connecting top copper to inner ground plane. Keep high-current LED return paths (cathode traces) separate from low-level analog grounds to avoid ground bounce that can corrupt SDA/SCL communication.
Informações de conformidade
RoHS compliant, halogen-free, BFR-free per onsemi product page (October 2026). Not AEC-Q100 qualified - consult onsemi for Q-grade automotive variants. Reach SVHC compliant per onsemi product statement.
