TPS92513 1.5A Buck LED Driver with Integrated Analog Current Adjust
1 Features
- Integrated 220-mΩ High-Side MOSFET
- 4.5-V to 42-V Input Voltage Range
(4.5 V to 60 V for the TPS92513HV) - 0 V to 300 mV Adjustable Voltage Reference
- ±5% LED Current Accuracy
- 100-kHz to 2-MHz Switching Frequency Range
- Dedicated PWM Dimming Input
- Adjustable Undervoltage-Lock-Out
- Overcurrent Protection
- Overtemperature Protection
- MSOP-10 Package with PowerPAD™
2 Applications
- Street Lighting
- Emergency/Exit Lighting
- General Industrial and Commercial Illumination
- Retail Lighting
- Appliance Lighting
- Transportation Lighting
- Channel Letters
- Light Bars
3 Description
The TPS92513/HV are 1.5A step-down (buck) current regulators with an integrated MOSFET to drive high current LEDs. Available with 42 V and 60 V (HV) input ranges, these LED drivers operate at a user selected fixed-frequency with peak-current mode control and deliver excellent line and load regulation.
The TPS92513/HV LED drivers feature separate inputs for analog and pulse width modulation (PWM) dimming for no compromise brightness control achieving contrast ratios of greater than 10:1 and greater than 100:1, respectively. The PWM input is compatible with low-voltage logic standards for easy interface to a broad range of microcontrollers. The analog LED current setpoint is adjustable from 0 V to 300 mV using the IADJ input with an external 0 V to 1.8 V signal.
For multi-string applications using two or more TPS92513/HV LED drivers, the internal oscillator can be overdriven by an external clock ensuring all of the converters operate at a common frequency thereby reducing the potential for beat frequencies and simplifying system EMI filtering. An adjustable input under-voltage lockout (UVLO) with hysteresis provides flexibility in setting start/stop voltages based upon supply voltage conditions.
The TPS92513includes cycle-by-cycle overcurrent protection and thermal shutdown protection. It is available in a 10-pin HVSSOP PowerPAD™ package.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| TPS92513 | HVSSOP (10) | 5.00 mm x 3.00 mm |
| TPS92513HV |
- For all available packages, see the orderable addendum at the end of the data sheet.
4 Simplified Schematics
Efficiency vs Input Voltage
7 White LEDs at 1.5 A (VOUT = 23 V)
5 Revision History
| DATE | REVISION | NOTES |
|---|---|---|
| April 2015 | * | Initial release. |
