component
ZXLD1370EST16TC
Public Made by Adomby adom
Diodes Incorporated LED Drivers, TSSOP-16-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownZXLD1370EST16TC
Diodes Incorporated · LED Drivers · TSSOP-16-EP
ZXLD1370EST16TC from Diodes Incorporated, in a TSSOP-16-EP. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | ADJ | input | DC output current adjust input that is connected to REF for 100% current and driven with 125mV to 2.5V to set 10% to 200% of the set value, with an internal clamp limiting the node to less than 3V. |
| 2 | REF | output | Internal 1.25V reference voltage output. |
| 3 | TADJ | input | Temperature adjust input for reducing LED current above a preset temperature through a thermistor or resistor network, and connecting it to REF disables the thermal compensation function. |
| 4 | SHP | bidirectional | Shaping capacitor for the feedback control loop, which requires a 100pF ±20% capacitor from this pin to ground for loop compensation. |
| 5 | STATUS | output | Analog operation status output that sits at 4.5V nominal in normal operation, switches to a lower voltage to indicate warnings or faults, and is low during shutdown. |
| 6 | SGND | power_in | Signal ground that must be connected to 0V, and must be connected together with PGND for correct operation. |
| 7 | PGND | power_in | Power ground that must be connected to 0V and to pin 8 to maximize copper area. |
| 8 | N/C | unconnected | Not connected internally; recommended to connect to pin 7 (PGND) to maximize PCB copper for thermal dissipation. |
| 9 | N/C | unconnected | Not connected internally; recommended to connect to pin 10 (GATE) to permit a wide copper trace to the MOSFET gate. |
| 10 | GATE | output | Gate drive output to an external NMOS transistor, rated for VGATE of -0.3 to +20V and a continuous output current of 18 mA maximum, and to be connected to pin 9. |
| 11 | VAUX | power_in | Auxiliary positive supply to the internal switch gate driver, to be connected to VIN or an auxiliary supply of 6V to 15V to reduce internal power dissipation, with an absolute maximum rating of -0.3 to +65V. |
| 12 | VIN | power_in | Input supply to the device with an operating range of 6V to 60V and an absolute maximum rating of -0.3 to +65V, to be decoupled to ground close to the device. |
| 13 | ISM | input | Current monitor input where the sense resistor connects between this pin and VIN, with a nominal sense voltage of 225mV. |
| 14 | FLAG | output | Open-drain flag output that is high impedance during normal operation and switches low to indicate a fault or warning, with an absolute maximum rating of 40V. |
| 15 | PWM | input | Digital PWM current control input accepting 3.3V or 5V logic, driven above 100Hz for dimming, and entering standby when held low for more than 15ms nominal. |
| 16 | GI | input | Gain setting input that connects to ADJ in buck mode or to a resistive divider from ADJ to SGND for boost and buck-boost modes, with an internal clamp limiting the node to less than 3V. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | TSSOP-16-EP |
| Category | LED Drivers |
| Pins | 17 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Supply Voltage (absolute maximum) | VIN | -0.3 | 65 | V | Voltages to GND | 4 | |
| Auxiliary Supply Voltage (absolute maximum) | VAUX | -0.3 | 65 | V | Voltages to GND | 4 | |
| Current Monitor Input (absolute maximum) | VISM | -0.3 | 65 | V | Voltages to GND | 4 | |
| Current Monitor Sense Voltage (absolute maximum) | VSENSE | -0.3 | 5 | V | VIN-VISM | 4 | |
| Gate Driver Output Voltage (absolute maximum) | VGATE | -0.3 | 20 | V | Voltages to GND | 4 | |
| Gate Driver Continuous Output Current (absolute maximum) | IGATE | 18 | mA | 4 | |||
| Flag Output Voltage (absolute maximum) | VFLAG | -0.3 | 40 | V | Voltages to GND | 4 | |
| Other Input Pins (absolute maximum) | VPWM, VADJ, VTADJ, VGI | -0.3 | 5.5 | V | Voltages to GND | 4 | |
| Maximum Junction Temperature (absolute maximum) | TJ | 150 | °C | 4 | |||
| Input Supply Voltage Range, normal operation | VIN | 8 | V | Normal operation | 5 | ||
| Input Supply Voltage Range, reduced performance operation | VIN | 6.3 | 60 | V | Reduced performance operation (Note 7) | 5 | |
| Auxiliary Supply Voltage Range, normal operation | VAUX | 8 | V | Normal operation (Note 8) | 5 | ||
| Auxiliary Supply Voltage Range, reduced performance operation | VAUX | 6.3 | 60 | V | Reduced performance operation (Note 7) | 5 | |
| Current Sense Monitor Input Range | VISM | 6.3 | 60 | V | 5 | ||
| Differential Input Voltage | VSENSE | 0 | 450 | mV | VVIN-VISM, with 0 ≤ VADJ ≤ 2.5 | 5 | |
| External DC Control Voltage on ADJ pin | VADJ | 0.125 | 2.5 | V | DC brightness control mode, 10% to 200% | 5 | |
| Recommended Switching Frequency Range | fMAX | 300 | 1000 | kHz | 5 | ||
| Recommended PWM Dimming Frequency Range (1000:1 resolution) | fPWM | 100 | 500 | Hz | To achieve 1000:1 resolution | 5 | |
| Recommended PWM Dimming Frequency Range (500:1 resolution) | fPWM | 100 | 1000 | Hz | To achieve 500:1 resolution | 5 | |
| PWM Pulse Width in Dimming Mode | tPWMH/L | 0.002 | 10 | ms | PWM input high or low | 5 | |
| PWM Pin High Level Input Voltage | VPWMH | 2 | 5.5 | V | 5 | ||
| PWM Pin Low Level Input Voltage | VPWML | 0 | 0.4 | V | 5 | ||
| Operating Junction Temperature Range | TJ | -40 | 125 | °C | 5 | ||
| Gain Setting Ratio for Boost and Buck-Boost Modes | GI | 0.2 | 0.5 | , | Ratio = VGI/VADJ | 5 | |
| Undervoltage Detection Threshold (falling) | VUV- | 5.2 | 5.6 | 6.3 | V | Normal operation to switch disabled; VIN or VAUX falling | 6 |
| Undervoltage Detection Threshold (rising) | VUV+ | 5.5 | 6 | 6.5 | V | Switch disabled to normal operation; VIN or VAUX rising | 6 |
| Quiescent Current into VIN | IQ-IN | 1.5 | 3 | mA | PWM pin floating; output not switching | 6 | |
| Quiescent Current into VAUX | IQ-AUX | 150 | 300 | µA | 6 | ||
| Standby Current into VIN | ISB-IN | 90 | 150 | µA | PWM pin grounded for more than 15ms | 6 | |
| Standby Current into VAUX | ISB-AUX | 0.7 | 10 | µA | 6 | ||
| Internal Reference Voltage | VREF | 1.237 | 1.25 | 1.263 | V | No load | 6 |
| Change in Reference Voltage with Output Current (sourcing) | VREF | -5 | mV | Sourcing 1mA | 6 | ||
| Change in Reference Voltage with Output Current (sinking) | VREF | 5 | mV | Sinking 100µA | 6 | ||
| Reference Temperature Coefficient | VREF-TC | -50 | 50 | ppm/°C | 6 | ||
| External DC control voltage applied to ADJ pin | VADJ | 0.125 | 1.25 | 2.5 | V | DC brightness control mode, 10% to 200% | 6 |
| ADJ Input Current | IADJ | 100 | nA | VADJ ≤ 2.5V | 6 | ||
| ADJ Input Current | IADJ | 5 | µA | VADJ = 5.0V | 6 | ||
| GI Voltage threshold for boost and buck-boost mode selection | VGI | 0.8 | V | VADJ = 1.25V | 6 | ||
| GI Input Current | IGI | 100 | nA | VGI ≤ 2.5V | 6 | ||
| GI Input Current | IGI | 5 | µA | VGI = 5.0V | 6 | ||
| PWM Input Current | IPWM | 36 | 100 | µA | VPWM = 5.5V | 6 | |
| PWM Pulse Width (to enter shutdown state) | tPWMOFF | 10 | 15 | 25 | ms | PWM input low | 6 |
| Overcurrent Sense Threshold Voltage | VSENSE-OC | 300 | 350 | 375 | mV | 6 | |
| Accuracy of Nominal VSENSE Threshold Voltage | VSENSE_ACC | -2 | 2 | % | VADJ = 1.25V | 6 | |
| FLAG Pin Low Level Output Voltage | VFLAGL | 0.5 | V | Output sinking 1mA | 7 | ||
| STATUS Flag No-Load Output Voltage, normal operation | VSTATUS | 4.2 | 4.5 | 4.8 | V | Normal operation | 7 |
| STATUS Flag No-Load Output Voltage, out of regulation | VSTATUS | 3.3 | 3.6 | 3.9 | V | Out of regulation (VSHP out of range) | 7 |
| STATUS Flag No-Load Output Voltage, VIN undervoltage | VSTATUS | 3.3 | 3.6 | 3.9 | V | VIN undervoltage (VIN < 5.6V) | 7 |
| STATUS Flag No-Load Output Voltage, switch stalled | VSTATUS | 3.3 | 3.6 | 3.9 | V | Switch stalled (tON or tOFF > 100µs) | 7 |
| STATUS Flag No-Load Output Voltage, overtemperature | VSTATUS | 1.5 | 1.8 | 2.1 | V | Overtemperature (TJ > +125°C) | 7 |
| STATUS Flag No-Load Output Voltage, excess sense resistor current | VSTATUS | 0.6 | 0.9 | 1.2 | V | Excess sense resistor current (VSENSE > 0.32V) | 7 |
| High Level Output Voltage GATE | VGATEH | 9.5 | 11 | V | No load, sourcing 1mA; VIN = VAUX = 12V | 7 | |
| High Level Output Voltage GATE | VGATEH | 4 | 5.5 | V | No load, sourcing 1mA; VIN = VAUX = 6.5V | 7 | |
| High Level GATE Clamp Voltage | VGATECL | 12.8 | 15 | V | VIN = VAUX = VISM = 18V, IGATE = 1mA | 7 | |
| Dynamic peak gate current during rise or fall | IGATE | -300 | 300 | mA | Charging or discharging gate of external switch with QG = 10nC and 400kHz | 7 | |
| Time to assert STALL flag and warning on STATUS output | tSTALL | 100 | 170 | µs | GATE low or high | 7 | |
| Upper Threshold Voltage, onset of output current reduction | VTADJH | 560 | 625 | 690 | mV | VTADJ falling | 7 |
| Lower Threshold Voltage, output current reduced to <10% | VTADJL | 380 | 440 | 500 | mV | Output current reduced to <10% of set value (VTADJ falling) | 7 |
| Junction-to-Ambient Thermal Resistance | θJA | 50 | °C/W | TSSOP-16EP, Note 6 (JESD51 high effective thermal conductivity test board) | 4 | ||
| Junction-to-Case Thermal Resistance | θJC | 23 | °C/W | TSSOP-16EP | 4 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | PGND 7 P Power Ground - Connect to 0V and pin 8 to maximize copper area. | 3 |
CAD (KiCad official)
- Symbol:
ZXLD1370EST16TC - Footprint:
Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm - 3D model: TSSOP-16-EP (KiCad packages3D, STEP)
- 3D model files:
zxld1370est16tc-etched.step/zxld1370est16tc-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);zxld1370est16tc.step/zxld1370est16tc.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (40 pp, sha256
c48f3018ec3e0bef, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).