LP5030 Texas instruments

LP5030

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LP5030

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Описание

Efficient and high-performance LED response effects, such as blinking, breathing, and chasing, are critical to improving end-user experience in many human machine interface (HMI) applications.The LP503x device is a 30- or 36-channel constant-current-sink LED driver. The LP503x has a 29 kHz, 12-Bit PWM generator for each channel, as well as channel/module independent color mixing and intensity control, formerly called brightness control registers to enable vivid LED effects with zero audible noise. Users can benefit from the device’s ultra-low shutdown Iq Power Saving Mode, while designers will appreciate the incredibly straightforward software coding of the LP503x’s three programmable R G B banks.The LP503x device controls each LED output with a 12-bit PWM resolution at 29-kHz switching frequency. This control helps get an intensity that decreases smoothly and stops audible noise. Having different color-mixing and intensity-control registers makes writing the software code straightforward. When targeting fade-in, fade-out type breathing effects, the global R, G, B bank control reduces the microcontroller loading significantly. The LP503x device also implements a PWM phase-shifting function to help reduce the input power budget when LEDs turn on simultaneously.The LP503x device has an automatic power-saving mode to get the ultra-low quiescent current. When channels are all off for 30 ms, the device total power consumption is down to 10 µA, making the LP503x device a possible alternative for battery-powered end equipment.

Operating Voltage Range:
- V_CC Range: 2.7 V to 5.5 V
- EN, SDA, and SCL Pins Compatible With 1.8-V, 3.3-V, and 5-V Power Rails
- Output Maximum Voltage: 6 V
36 Constant-Current Sinks With High Precision
- 25.5 mA Maximum per Channel When V_CC in Full Range
- 35 mA Maximum per Channel When V_CC ≥ 3.3 V
- Device-to-Device Error ±5%; Channel-to-Channel Error ±5%
Ultralow Quiescent Current:
- Shutdown Mode: 1 µA (Maximum) When EN Low
- Power Saving Mode: 12 µA (Maximum) When EN High and All LEDs Off for > 30 ms
Integrated 12-Bit, 29-kHz PWM Generator for Each Channel:
- Independent Color-Mixing Register Per Channel
- Independent Brightness-Control Register Per RGB LED Module
- Optional Logarithmic- or Linear-Scale Brightness Control
- Integrated 3-Phase-Shifting PWM Scheme
3 Programmable Banks (R, G, B) for Easy Software Control of Each Color
2 External Hardware Address Pins Allow Connecting up to 4 Devices
Broadcast Slave Address Allows Configuring Multiple Devices Simultaneously
Auto-Increment Allows Writing or Reading Consecutive Registers Within One Transmission
Up to 400-kHz Fast-Mode I²C Speed

Number of channels	30
LED current per channel (mA)	35
LED configuration	Parallel
Program memory	No
Topology	Current Sink
Programmable ramp control	No
Vin (min) (V)	2.7
Vin (max) (V)	5.5
Iout (max) (A)	1.05
Features	Constant current, Current control, I2C control, Power-save mode
Iq (typ) (mA)	0.01
Shutdown current (ISD) (typ) (µA)	1
Operating temperature range (°C)	-40 to 125
Rating	Catalog