The TPS92205x family is a 1A / 2A non-synchronous Boost / Buck-Boost LED driver with 4.5V to 65V wide input range. By integrating the low-side NMOS, the device is capable of driving LEDs with high power density and high efficiency. The device also supports common anode anodeconnection and single layer PCB. The switching frequency is set at 400kHz or 1MHz.
The TPS92205x family support PWM dimming by configuring through the DIM input pins by means of simple high and low signals. The TPS92205x family support analog dimming by configuring through the DIM input pins by means of analog voltage signals. The device adopts an adaptive off-time current mode control along with smart and accurate sampling to enable fast PWM dimming and achieve high dimming ratio.
The TPS92205x family also provides multiple systematic protections, including LED open and short, switching FET open and short, sense resistor open and short, and thermal shutdown.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS922050TPS922051 | WSON (8) | 2.0mm x 2.0mm |
HVSSOP (8) | 3.0mm x 3.0mm | |
TPS922050 | SOT583 (8) | 2.0mm x 1.2mm |
Part Number | Package | Typical Current Limit | Switching Frequency | LED Dimming | Junction Temperature |
---|---|---|---|---|---|
TPS922051D1DSGR | WSON (8) | 3A | 400kHz | PWM | -40°C to 125°C |
TPS922051D2DSGR | WSON (8) | 3A | 400kHz | Analog | -40°C to 125°C |
TPS922051D1DGNR | HVSSOP (8) | 3A | 400kHz | PWM | -40°C to 125°C |
TPS922051D2DGNR | HVSSOP (8) | 3A | 400kHz | Analog | -40°C to 125°C |
TPS922050D1DSGR | WSON (8) | 1.5A | 1MHz | PWM | -40°C to 125°C |
TPS922050D2DSGR | WSON (8) | 1.5A | 1MHz | Analog | -40°C to 125°C |
TPS922050D1DGNR | HVSSOP (8) | 1.5A | 1MHz | PWM | -40°C to 125°C |
TPS922050D2DGNR | HVSSOP (8) | 1.5A | 1MHz | Analog | -40°C to 125°C |
TPS922050D1DRLR | SOT583 (8) | 1.5A | 400kHz | PWM | -40°C to 125°C |
TPS922050D2DRLR | SOT583 (8) | 1.5A | 400kHz | Analog | -40°C to 125°C |
PIN | TYPE(1) | DESCRIPTION | |||
---|---|---|---|---|---|
NAME | WSON Package | SOP Package | SOT Package | ||
GND | 1 | 1 | 8 | G | Ground pin. |
VIN | 2 | 2 | 7 | P | Input power pin. |
DIM | 3 | 3 | 6 | I | PWM dimming pin for D1 version. Input PWM signal for PWM dimming. Analog dimming pin for D2 version. Input analog signal for analog dimming. |
VCC | 4 | 4 | 5 | P | Internal LDO output pin. Connect with a 16V, 1μF capacitor to GND. |
COMP | 5 | 5 | 4 | I/O | Error-amilifier output. Connect capacitors to GND. Different capacitor values determine different softstart times and bandwidths. |
CSP | 6 | 6 | 3 | I | LED current sense positive pin. |
CSN | 7 | 7 | 2 | I | LED current sense negative pin. |
SW | 8 | 8 | 1 | P | Switching node pin. Internally connected to the low-side MOSFET. Connect with the power inductor and the schottky diode. |
Thermal Pad | Y | Y | N/A | NC | No connection. |
MIN | MAX | UNIT | ||
---|---|---|---|---|
Voltage on pins VIN, CSP, CSN, SW | –0.3 | 65 | V | |
Voltage on pins VCC, DIM, COMP | –0.3 | 5.5 | V | |
TJ | Junction temperature | –40 | 125 | °C |
Tstg | Storage temperature | –65 | 150 | °C |