The TPS9260x-Q1 family of devices is a single-channel and dual-channel high-side-current LED driver. With full protection and diagnostics, this family of devices is dedicated for and ideally suited to automotive front lighting. The base of each independent driver is a peak-current-mode boost controller. Each controller has two independent feedback loops, a current-feedback loop with a high-side current-sensing shunt and a voltage-feedback loop with an external resistor-divider network. The controller delivers a constant output voltage or a constant output current. The connected load determines whether the device regulates a constant output current (if the circuit reaches the current set-point earlier than voltage set-point) or a constant output voltage (if the circuit reaches the voltage set-point is reached first, for example, in an open-load condition).
Each controller supports all typical topologies such as boost, boost-to-battery, SEPIC, or flyback.
Uses of the high-side PMOS FET driver are for PWM dimming of the LED string and for cutoff in case of an external short circuit to GND to protect the circuit.
|Input Voltage (Type)|
|Vin (Min) (V)|
|Vin (Max) (V)|
|Iout (Max) (A)|
|Vout (Min) (V)|
|Vout (Max) (V)|
|Switching Frequency (Min) (kHz)|
|Switching Frequency (Max) (kHz)|
|Operating Temperature Range (C)|
|Approx. Price (US$)|
| Boost |
| Analog |
| Adjustable Switch Frequency |
|-40 to 125||-40 to 125|
|3.00 | 1ku||2.12 | 1ku|
|Sample & Buy||Sample & Buy|
|Part #||Name||Product Family||Comments|
|TPS7A6650-Q1||Automotive, 150mA, High Voltage, Ultra Low Iq, Low Drop Out Regulator||LINEAR REGULATOR (LDO) - SINGLE CHANNEL LDO|
|TPS7B6950-Q1||TPS7B6950-Q1 High-Voltage Ultra-Low IQ Low-Dropout Regulator/Fixed 5-V Output Voltage||LINEAR REGULATOR (LDO) - SINGLE CHANNEL LDO|
|TPS7B4250-Q1||Automotive Low-Dropout Voltage-Tracking LDO||LINEAR REGULATOR (LDO) - SINGLE CHANNEL LDO|