LED1202QTR
The LED1202QTR is an electronic component from STMicroelectronics. View the full LED1202QTR datasheet below including electrical characteristics, absolute maximum ratings.
Manufacturer
STMicroelectronics
Overview
Part: LED1202 — STMicroelectronics
Type: 12-channel Low Quiescent Current LED Driver
Description: The LED1202 is a 12-channel low quiescent current LED driver with a supply range of 2.6 V to 5 V, capable of providing up to 20 mA per channel with 1% (typ.) current matching, featuring 8-bit analog and 12-bit digital dimming control via an I²C interface.
Operating Conditions:
- Supply voltage: 2.6–5 V
- Operating temperature: -40 to +85 °C
- I²C clock frequency: up to 400 kHz
Absolute Maximum Ratings:
- Max supply voltage: 6 V
- Max digital domain voltages (SDA, SCL, IRQn, VLDO, A0, A1): 6 V
- Max LED outputs (CS0-CS11): 6 V
- Max junction temperature: 125 °C
- Max storage temperature: 150 °C
Key Specs:
- Channels: 12
- Current capability per channel: 1–20 mA
- Current matching (typ.): ±1% at 16 mA, ±2% at 2.5 mA
- Minimal headroom voltage: 350 mV (typ.) at 0.985 * I_CSMAX
- Quiescent current (EN='0'): 4 μA (typ.)
- Supply current (EN='1', I_CS0-CS11 = 16 mA): 0.8 mA (typ.)
- Output digital dimming frequency: 220 Hz (typ.)
- Thermal shutdown: 150 °C (typ.)
- Open LED detection threshold: 100 mV (typ.)
Features:
- 1.8 V compatible I²C control interface
- 8-bit analog dimming individual control
- 12-bit local PWM resolution
- 8 programmable patterns
- Programmable pattern sequence
- Synchronization for multi-device application
- Phase shifting between channels
- Open LED detection
- Overtemperature protection
- 8 configurable I²C slave addresses plus global address
- Fault flag pin
Applications:
- RGB LED lighting, fade-in and fade-out breathing effect, indicator lights for:
- Wearable electronics
- Battery powered devices
- Portable accessories
Package:
- WLCSP20 (1.71 x 2.16 x 0.5 mm, 0.4 mm pitch)
- QFN20 3x3 (3 x 3 x 0.6 mm, 0.5 mm pitch)
Features
- Supply range from 2.6 V to 5 V
- 12 channels for single LED
- 20 mA current capability per channel
- 1% (typ.) current matching at 16 mA and 2% (typ.) at 2.5 mA
- 1.8 V compatible I²C control interface
- 8-bit analog dimming individual control
- 12-bit local PWM resolution
- 8 programmable patterns
- Programmable pattern sequence
- Synchronization for multi-device application
- Phase shifting between channels
- Open LED detection
- Overtemperature protection
- 8 configurable I²C slave addresses plus global address
- Fault flag pin
Applications
- RGB LED lighting, fade-in and fade-out breathing effect, indicator lights for:
- -Wearable electronics
- -Battery powered devices
- -Portable accessories
Pin Configuration
WLCSP20 and QFN20 3x3 package pinout and pin description.
Electrical Characteristics
Table 4. LED1202 electrical characteristics V IN = 3.3 V, SDA, SCL and IRQn = 1.8 V, T a = 25 °C, RC load = 50 Ω//10 pF, unless otherwise specified.
| Symbol | Parameter | Test conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| V IN | Operating input voltage | 2.6 | 5 | V | ||
| I Q | Quiescent current | EN='0' | 4 | 8 | μA | |
| I IN | Supply current | EN='1' I CS0-CS11 = 16 mA | 0.8 | 2.0 | mA | |
| V IN_UVLO | Undervoltage lockout threshold | V UVLOR (V IN is rising) | 2.5 | V | ||
| V IN_UVLO | Undervoltage lockout threshold | V UVLOF (V IN is falling) | 2.1 | V | ||
| V LDO | LDO output voltage | I out = 10 mA; V IN = 2.6 V | 1.8 | V | ||
| I LDO_SH | LDO short-circuit current | V out forced at 1.6 V | 200 | mA | ||
| V CS_MIN | Minimal headroom voltage | I CS0-CS11 = 0.985 * I CSMAX | 350 | mV | ||
| V CS_MAX | Maximum output voltage | I CS0-CS11 = 0 mA | 5 | V | ||
| I CS_SET | Analog dimming range (1) | 1 | 20 | mA | ||
| ΔI CS0-CS11 | Current matching between channels (2) | I CS0-CS11 = 16.0 mA @V CS = 1 V | ±1% | ±3 | % | |
| ΔI CS0-CS11 | Current matching between channels (2) | I CS0-CS11 = 2.5 mA @V CS = 1 V | ±2% | ±3 | % | |
| ΔI CS | Absolute channel accuracy | I CS0-CS11 = 16.0 mA @V CS = 1 V | ±4 | % | ||
| ΔI CS | Absolute channel accuracy | I CS0-CS11 = 2.5 mA @V CS = 1 V | ±6 | % | ||
| f PWM | Output digital dimming frequency | 220 | Hz | |||
| D PWM | Output dimming duty-cycle range | 0 | 100 | % | ||
| D PWM_STEP | Output dimming duty-cycle step | 1/4095 | ||||
| t PWM_ON-MIN | Minimum output pulse ON-time | 1 | μs | |||
| t SHIFT | Phase shift time between channels | SHFT = '1' | 1/12xf PWM | s | ||
| t INIT | Initialization time to start lighting | EN = '0'→ '1' Pattern0 default condition | 6 | ms | ||
| T SHDN | Thermal shutdown | 150 | °C | |||
| V OPEN_TH | Open LED detection threshold | I CS0-CS11 > 1 mA | 100 | mV | ||
| V IRQn | Output low level | I TEST = 1 mA | 0.4 | V | ||
| I IRQn_LK | Input leakage current | V IRQn = 5 V | 1 | μA | ||
| I²C compatible interface | I²C compatible interface | |||||
| V IH | High level input voltage | 1.26 | V | |||
| V IL | Low level input voltage | 0.54 | V | |||
| V OL | Low level output voltage | I TEST = 5 mA | 0.4 | V |
Table 4. LED1202 electrical characteristics V IN = 3.3 V, SDA, SCL and IRQn = 1.8 V, T a = 25 °C, RC load = 50 Ω//10 pF, unless otherwise specified.
| Symbol | Parameter | Test conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| C IO | IO pin capacitance | 10 | pF | |||
| f SCL | SCL clock frequency | 400 | kHz | |||
| t LOW | Minimum clock low period | 1.3 | μs | |||
| t HIGH | Minimum clock high period | 600 | ns | |||
| t F | SDA and SCL fall time | 300 | ns | |||
| t R | SDA and SCL rise time | 300 | ns | |||
| t HD:STA | Start condition hold time | 600 | ns | |||
| t SU:STA | Start condition setup time | 600 | ns | |||
| t SU:DAT | Data setup time | 100 | ns | |||
| t HD:DAT | Data hold time | 0 | μs | |||
| t SU:STO | Stop condition setup time | 600 | ns | |||
| t BUF | Minimum delay between operations | 1.3 | μs |
Absolute Maximum Ratings
Table 2. Absolute maximum ratings
| Symbol | Parameter | Value | Unit |
|---|---|---|---|
| V IN | LED driver input voltage | -0.3 to 6 | V |
| V SDA , V SCL , V IRQn | Digital domain voltages | -0.3 to 6 | V |
| V CS0-CS11 | LED outputs | -0.3 to 6 | V |
| V LDO , V A0 , V A1 | Digital domain voltages | -0.3 to 6 | V |
| ESD | Human body model (HBM) - JESD22-A114-B | ±2000 | V |
Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied.
Thermal Information
Table 3. Thermal data
| Symbol | Parameter | Parameter | Value | Unit |
|---|---|---|---|---|
| T a | Operative free-air temperature range | Operative free-air temperature range | -40 to +85 | °C |
| T J | Operative junction temperature range | Operative junction temperature range | -40 to +125 | °C |
| T STG | Storage ambient temperature range | Storage ambient temperature range | -55 to +150 | °C |
| θ ja | Thermal resistance junction-ambient (1) | WLCSP20 1.71x2.16 mm | 89.5 | °C/W |
| θ ja | Thermal resistance junction-ambient (1) | QFN20 3x3 | 65.3 | °C/W |
| θ jb | Thermal resistance junction-board (1) | WLCSP20 1.71x2.16 mm | 53.0 | °C/W |
| θ jb | Thermal resistance junction-board (1) | QFN20 3x3 | 18.1 | °C/W |
| θ jc | Thermal resistance junction-case (1) | WLCSP20 1.71x2.16 mm | 13.8 | °C/W |
| θ jc | Thermal resistance junction-case (1) | QFN20 3x3 | 19.4 | °C/W |
Table 3. Thermal data
Package Information
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK ® packages, depending on their level of environmental compliance. ECOPACK ® specifications, grade definitions and product status are available at: www.st.com. ECOPACK ® is an ST trademark.
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