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STMicroelectronics STP16DPPS05TTR
- Part No.:
- STP16DPPS05TTR
- Manufacturer:
- STMicroelectronics
- Category:
- LED Drivers
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
STP16DPPS05TTR.pdf
- Description:
- IC LED DRVR LINEAR 40MA 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,337
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Product details
Overview
STP16DPPS05TTR from STMicroelectronics is a 16-bit constant-current LED sink driver with integrated open/short error detection and auto power-saving, designed for LED panel displays. It delivers 3–40 mA per channel via external R-EXT resistor, supports 30 MHz serial data clocking, operates from 3.0–5.5 V supply, and features 3.3 V logic-compatible inputs. Its TSSOP24 exposed pad package enables thermal management in high-density LED signage.
For engineers reviewing the STP16DPPS05TTR datasheet, STP16DPPS05TTR pinout, STP16DPPS05TTR application, or STP16DPPS05TTR equivalent, key selection criteria include output current accuracy (±1% between bits), error detection timing (≥1 µs), OE/DM2-controlled 0–100% brightness dimming, and thermal resistance (37.5 °C/W) in the exposed-pad TSSOP24 package.
Technical Context
The STP16DPPS05TTR integrates a 16-bit serial-in/parallel-out shift register feeding a 16-bit D-type storage latch, driving sixteen regulated current sinks. Output current is set by an external resistor connected to R-EXT (Pin 23), enabling precise per-channel LED intensity control across 3–40 mA.
Error detection operates through dedicated logic on OE/DM2 and LE/DM1 pins-no extra pins required-identifying three fault conditions: short-to-GND, short-to-VO, and open-circuit, with results shifted out via SDO. Auto power-saving reduces IDD to 170 µA when latches are inactive, resuming full operation within one clock cycle upon new data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 independent constant-current sinks for LED anode-common configurations |
| Output current range | 3–40 mA per channel, adjustable via external R-EXT resistor (497 Ω to 23.7 kΩ) |
| Current accuracy | ±1% between outputs at 5–40 mA, ±2% unit-to-unit variation |
| Max output voltage | 20 V, enabling up to 6 standard white LEDs (3.2 V each) in series per channel |
| Serial clock frequency | 30 MHz max, supporting high-refresh-rate LED panels (e.g., >1 kHz frame rates) |
| Thermal resistance | 37.5 °C/W (junction-to-ambient), achieved only when exposed pad is soldered to PCB ground plane |
| Error detection time | ≥1 µs per channel, with status reported serially without interrupting normal display operation |
| Supply voltage range | 3.0–5.5 V, compatible with 3.3 V microcontrollers and industrial 5 V systems |
Pinout & Package
TSSOP24 exposed pad package (JEDEC MO-153AC), 7.8 mm × 4.4 mm × 1.05 mm body height, with thermally enhanced copper-exposed pad (E-Pad) requiring direct PCB solder connection to GND or isolated thermal land.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Primary return path for all 16 output currents and internal logic; must connect to low-impedance PCB ground plane |
| 2 SDI | Serial data input | CMOS-compatible input accepting 3.3 V logic; cascades to next device's SDI or MCU GPIO |
| 3 CLK | Clock input | Edge-triggered 30 MHz max clock; rise/fall times ≤5 µs recommended for cascade reliability |
| 4 LE/DM1 | Latch enable / detect mode 1 | Level-sensitive control: high = load shift register into latch; used with OE/DM2 for 5-cycle error detection entry |
| 5–20 OUT0–OUT15 | Constant-current sink outputs | Each drives LED cathodes; 20 V max compliance voltage; no external current-limiting resistors needed |
| 21 OE/DM2 | Output enable / detect mode 2 | Active-low output control; also initiates error detection sequence with LE/DM1; enables 0–100% PWM dimming |
| 22 SDO | Serial data output | Shifts out error status bits (16-bit) or daisy-chained data; CMOS-compatible output |
| 23 R-EXT | Current programming input | Connects external precision resistor to set all 16 output currents identically (e.g., 497 Ω = 40 mA) |
| 24 VDD | Power supply | 3.0–5.5 V input; decoupling capacitor (100 nF) required within 5 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Integrated open/short LED detection | Detects faults on all 16 outputs using existing pins-no added BOM cost or PCB area |
| Auto power-saving mode | Reduces supply current from 7.5 mA to 170 µA during static display periods, eliminating external sleep control logic |
| 3.3 V logic compatibility | Accepts 3.3 V MCU signals directly-no level shifters required for STM32, ESP32, or similar controllers |
| High thermal efficiency package | TSSOP24 with exposed pad lowers junction temperature by ~25 °C vs standard TSSOP24 at 40 mA/channel |
| Adjustable current with single resistor | One external resistor sets identical current across all 16 channels-simplifies calibration and reduces component count |
| 20 V output compliance | Supports longer LED strings (e.g., 6× white LEDs) without external boost circuitry, reducing system cost |
Applications
| Indoor LED Video Walls | Automotive Interior Lighting |
|---|---|
|
Use Scenario: High-resolution indoor video walls with pixel pitch ≤2.5 mm, requiring uniform brightness and real-time fault reporting. IC Role / Device Role / Timing Role: Constant-current sink driver managing 16 LEDs per module; serial interface synchronized to display controller clock (≤30 MHz). Use Value: ±1% current matching ensures visual uniformity; open-circuit detection prevents dead-pixel clusters during 24/7 operation. |
Use Scenario: RGB ambient lighting strips in vehicle cabins, where EMI robustness and thermal safety are critical. IC Role / Device Role / Timing Role: LED driver with auto power-down during ignition-off; OE/DM2 pin used for PWM dimming and fault interrogation. Use Value: 170 µA shutdown current extends battery life; 20 V compliance allows mixed-color LED strings without voltage boosters. |
| Industrial Panel Meters | Public Information Displays |
|
Use Scenario: DIN-rail mounted panel meters with segmented LED indicators, operating in wide-temperature industrial environments. IC Role / Device Role / Timing Role: Reliable current sink for 7-segment + status LEDs; error detection reports open segments before field failure. Use Value: -40 °C to +125 °C operating range and ±2% unit-to-unit current variation ensure consistent readability across batches. |
Use Scenario: Outdoor bus/train station displays exposed to temperature cycling and vibration, requiring long-term LED health monitoring. IC Role / Device Role / Timing Role: Primary LED driver with periodic automated error scans during off-peak hours via SDO readback. Use Value: Short-to-GND detection identifies moisture-induced failures; exposed pad package sustains 150 °C junction temperature under sustained load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED sink driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB62786AFG | No integrated error detection; requires external sense resistors and comparator circuit for fault reporting | Suitable for cost-sensitive designs where fault monitoring is optional or handled at system level | Select if BOM simplicity outweighs diagnostic capability and thermal performance is less critical |
| IS31FL3731 | I²C interface instead of SPI-like serial chain; built-in PWM registers but no open/short detection | Better for small-format displays (<64 LEDs) with microcontroller I²C availability and lower refresh rate needs | Choose for designs prioritizing software-configurable dimming over hardware-level fault resilience |
Compared with TB62786AFG and IS31FL3731, the STP16DPPS05TTR uniquely combines pin-efficient error detection, 30 MHz throughput, and 37.5 °C/W thermal resistance in a single TSSOP24 exposed pad package-making it optimal for high-reliability, high-density LED signage where diagnostics and thermal headroom are non-negotiable.
Availability
STP16DPPS05TTR is available at Aetrix Electronics and suitable for indoor LED video walls, automotive interior lighting, industrial panel meters, and public information displays requiring stable component supply and long-term manufacturing continuity.
Supply support for STP16DPPS05TTR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.
The STP16DPPS05 belongs to ST's LED driver portfolio targeting high-reliability display systems, emphasizing integrated diagnostics, thermal efficiency, and seamless MCU interfacing for LED signage and human-machine interface applications.
FAQ
What is the minimum R-EXT resistor value for 40 mA output current?
The datasheet specifies 497 Ω as the nominal R-EXT value for 40 mA output current at 25 °C (Table 11). Using a precision 1% metal-film resistor ensures ±1% current accuracy. Lower values risk exceeding absolute maximum output current (50 mA) and may degrade thermal stability above 125 °C ambient.
How does the error detection mode interact with normal display operation?
Error detection runs in a dedicated 5-clock-cycle sequence followed by ≥1 µs measurement window-no display data is lost. Detection results shift out via SDO while outputs remain latched; the host MCU reads status without blanking the display. Resuming normal mode requires a separate 5-cycle exit sequence (Table 14).
Can the exposed pad be left floating or must it connect to GND?
The exposed pad must be soldered to a PCB copper land-either electrically connected to GND or thermally isolated-but never left floating. Floating pads cause unpredictable thermal resistance and potential ESD vulnerability. ST's thermal data (37.5 °C/W) assumes full solder coverage per Figure 28 and Table 19.
Does auto power-saving affect timing parameters like tPLH or tON?
No-auto power-saving only reduces quiescent current (IDD drops from 7.5 mA to 170 µA); propagation delays (tPLH1–tPLH3), rise/fall times (tON/tOFF), and setup/hold times remain unchanged per Table 8. The first output activated after wake-up exhibits standard tON behavior (Figure 23).
STP16DPPS05TTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Shift Register
- Internal Switch(s):
- Yes
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 20V
- Current - Output / Channel:
- 40mA
- Frequency:
- 30MHz
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP
STP16DPPS05TTR FAQ
1.How can I place an order for STP16DPPS05TTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STP16DPPS05TTR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STP16DPPS05TTR reliable?
The price and inventory of STP16DPPS05TTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP16DPPS05TTR is usually 5 days.
3.What payment methods are accepted for STP16DPPS05TTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP16DPPS05TTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STP16DPPS05TTR?
STP16DPPS05TTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STP16DPPS05TTR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STP16DPPS05TTR?
For technical support, including STP16DPPS05TTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP16DPPS05TTR requirements.
6.How does Aetrix verify that STP16DPPS05TTR is sourced from the original manufacturer or authorized distributors?
All STP16DPPS05TTR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STP16DPPS05TTR meets industry standards.
7.What is the process for return or replacement of STP16DPPS05TTR?
All STP16DPPS05TTR units undergo pre-shipment inspection (PSI). If there is an issue with STP16DPPS05TTR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STP16DPPS05TTR part is unused and in its original packaging.
Return procedure for STP16DPPS05TTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STP16DPPS05TTR Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
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