The TPS560430-Q1 is a wide-VIN, easy to use synchronous buck converter capable of driving up to 600-mA load current. With a wide input range of 4 V to 36 V, the device is suitable for a wide range of automotive applications for power conditioning from an unregulated source.
TPS560430-Q1 operates at 2.1-MHz switching frequency to support use of relatively small inductors for an optimized solution size. It has Eco-mode version to realize high efficiency at light load and FPWM version to achieve constant frequency, small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally which allows the device to be used with minimum external components.
The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The TPS560430-Q1 is available in SOT-23-6 package.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS560430-Q1 | SOT-23-6 | 2.90 mm × 1.60 mm |
Changes from * Revision (January 2019) to A Revision
ORDERABLE PART NUMBER | Frequency | PFM or FPWM | Output |
---|---|---|---|
TPS560430YQDBVRQ1 | 2.1 MHz | PFM | Adjustable |
TPS560430YFQDBVRQ1 | 2.1 MHz | FPWM | Adjustable |
PIN | TYPE (1) | DESCRIPTION | |
---|---|---|---|
NAME | NO | ||
CB | 1 | P | Bootstrap capacitor connection for high-side FET driver. Connect a high quality 100nF capacitor from this pin to the SW pin. |
GND | 2 | A | Power ground terminals, connected to the source of low-side FET internally. Connect to system ground, ground side of CIN and COUT. Path to CIN must be as short as possible. |
FB | 3 | A | Feedback input to the converter. Connect a resistor divider to set the output voltage. Never short this terminal to ground during operation. |
EN | 4 | A | Precision enable input to the converter. Do not float. High = on, Low = off. Can be tied to VIN. Precision enable input allows adjustable UVLO by external resistor divider. |
VIN | 5 | P | Supply input terminal to internal bias LDO and high-side FET. Connect to input supply and input bypass capacitors CIN. Input bypass capacitors must be directly connected to this pin and GND. |
SW | 6 | P | Switching output of the converter. Internally connected to source of the high-side FET and drain of the low-side FET. Connect to power inductor. |