The TPS6307x is a high efficiency, low quiescent current buck-boost converter suitable for applications where the input voltage can be higher or lower than the output voltage. Output currents can go as high as 2 A in boost mode and in buck mode. The buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters Power Save Mode to maintain high efficiency over a wide load current range. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is available in a 2.5 mm x 3 mm QFN package.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS63070 | VQFN | 2.5 mm x 3 mm |
TPS630701 | VQFN | 2.5 mm x 3 mm |
TPS630702 | VQFN | 2.5 mm x 3 mm |
Changes from A Revision (August 2016) to B Revision
Changes from * Revision (June 2016) to A Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
EN | 14 | I | Enable input. Pull high to enable the device, pull low to disable the device. |
FB | 5 | I | Voltage feedback of adjustable versions, must be connected to VOUT on fixed output voltage versions |
GND | 4 | Control / logic ground | |
L1 | 11 | I | Connection for Inductor |
L2 | 9 | I | Connection for Inductor |
PS/SYNC | 1 | I | Pull to low for forced PWM, pull high for PWM/PFM (power save) mode. Apply a clock signal to synchronize to an external frequency. |
PG | 2 | O | Open drain power good output |
PGND | 10 | Power ground | |
VIN | 12, 13 | I | Supply voltage for power stage |
VOUT | 7,8 | O | Buck-boost converter output |
VAUX | 3 | O | Connection for Capacitor of internal voltage regulator. This pin must not be loaded externally. |
VSEL | 15 | I | Voltage scaling input. A high level on this pin enables a transistor which pulls pin FB2 to GND. |
FB2 | 6 | O | Voltage scaling output. Connect a resistor from FB to FB2 to change the voltage divider ratio on the feedback pin. A logic high level on VSEL will change the output voltage to a higher value. Leave the pin open or connect to GND if not used. |