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The TPS61193-Q1 is an automotive high-efficiency, low-EMI, easy-to-use LED driver with an integrated DC-DC converter. The DC-DC converter supports both boost and SEPIC mode operation. The device has three high-precision current sinks that can be combined for higher current capability.
The DC-DC converter has adaptive output voltage control based on the LED current sink headroom voltages. This feature minimizes the power consumption by adjusting the voltage to the lowest sufficient level in all conditions. For EMI reduction DC-DC supports spread spectrum for switching frequency and an external synchronization with dedicated pin. A wide-rage adjustable frequency allows the TPS61193-Q1 to avoid disturbance for AM radio bands.
The input voltage range for the TPS61193-Q1 is from 4.5 V to 40 V to support automotive stop/start and load dump condition. The TPS61193-Q1 integrates extensive fault detection features.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS61193-Q1 | HTSSOP (20) | 6.50 mm × 4.40 mm |
Changes from B Revision (April 2017) to C Revision
Changes from A Revision (October 2016) to B Revision
Changes from * Revision (October 2015) to A Revision
PIN | TYPE(1) | DESCRIPTION | |
---|---|---|---|
NO. | NAME | ||
1 | VIN | A | Input power pin |
2 | LDO | A | Output of internal LDO; connect a 1-μF decoupling capacitor between this pin and noise-free GND. |
3 | FSET | A | DC-DC (boost or SEPIC) switching frequency setting resistor; for normal operation, resistor value from 24 kΩ to 219 kΩ must be connected between this pin and ground. |
4 | VDDIO/EN | I | Enable input for the device as well as supply input (VDDIO) for digital pins |
5 | FAULT | OD | Fault signal output. If unused, the pin may be left floating. |
6 | SYNC | I | Input for synchronizing boost. If synchronization is not used, connect this pin to GND to disable spread spectrum or to VDDIO/EN to enable spread spectrum. |
7 | PWM | I | PWM dimming input. |
8 | NC | — | No connect |
9 | GND | G | Ground. |
10 | ISET | A | LED current setting resistor; for normal operation, resistor value from 24 kΩ to 129 kΩ must be connected between this pin and ground. |
11 | GND | G | Ground |
12 | GND | G | Ground |
13 | OUT3 | A | Current sink output; this pin must be connected to GND if not used. |
14 | OUT2 | A | Current sink output This pin must be connected to GND if not used. |
15 | OUT1 | A | Current sink output This pin must be connected to GND if not used. |
16 | FB | A | DC-DC (boost or SEPIC) feedback input; for normal operation this pin must be connected to the middle of a resistor divider between VOUT and ground using feedback resistor values from 5 kΩ to 150 kΩ. |
17 | PGND | G | DC-DC (boost or SEPIC) power ground |
18 | SW | A | DC-DC (boost or SEPIC) switch pin |
19 | NC | A | No connect |
20 | VIN | A | Input power pin |