The TPS62097 device is a synchronous step-down converter optimized for high efficiency and noise critical applications. The devices focus on high efficiency conversion over a wide output current range. At medium to heavy loads, the converter operates in PWM mode and automatically enters Power Save Mode operation at light load. The switching frequency is selectable in the range of 1.5 MHz to 2.5 MHz by an external resistor. iDCS-Control is able to be operated in forced PWM mode for low noise operation with a fixed switching frequency.
To address the requirements of system power rails, the internal compensation circuit allows a large selection of external output capacitor values in excess of 150 µF. To control the inrush current during the start-up, the device provides a programmable soft start-up by an external capacitor connected to the SS/TR pin. The SS/TR pin is also used in voltage tracking configurations. The device integrates short circuit protection, power good and thermal shutdown features. The device is available in a 2-mm x 2-mm VQFN package.
The new product, TPS62851x, offers reduced BOM cost, smaller total solution size and other features.
PART NUMBER | PACKAGE(1) | BODY SIZE (NOM) |
---|---|---|
TPS62097 | VQFN (11) | 2.0 mm x 2.0 mm |
TPS6209718 | ||
TPS6209733 |
PART NUMBER(1) | OUTPUT VOLTAGE | PACKAGE MARKING |
---|---|---|
TPS62097 | Adjustable | ZFZ5 |
TPS6209718 | 1.8V | ZGB5 |
TPS6209733 | 3.3V | ZGC5 |
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
PGND | 1 | Power ground pin | |
SW | 2 | PWR | Switch pin. It is connected to the internal MOSFET switches. Connect the external inductor between this terminal and the output capacitor. |
VOS | 3 | I | Output voltage sense pin. This pin must be directly connected to the output capacitor. |
FB | 4 | I | Feedback pin. For the fixed output voltage versions, this pin is recommended to be connected to AGND for improved thermal performance. The pin also can be left floating as an internal 400-kΩ resistor is connected between this pin and AGND for fixed output voltage versions. For the adjustable output voltage version, a resistor divider sets the output voltage. |
PG | 5 | O | Power-good open-drain output pin. The pullup resistor should not be connected to any voltage higher than 6 V. If it is not used, leave the pin floating. |
EN | 6 | I | Enable pin. To enable the device, this pin needs to be pulled high. Pulling this pin low disables the device. This pin has an internal pulldown resistor of typically 375 kΩ when the device is disabled. |
PVIN | 7 | PWR | Power input supply pin |
AVIN | 8 | I | Analog input supply pin. Connect it to the PVIN pin together. |
SS/TR | 9 | I | Soft start-up and voltage tracking pin. A capacitor is connected to this pin to set the soft start-up time. Leaving this pin floating sets the minimum start-up time. |
MODE | 10 | I | Mode selection pin. Connect this pin to AGND to enable Power Save Mode with automatic transition between PWM and Power Save Mode. Connect this pin to an external resistor or leave floating to enable forced PWM mode only. See Table 8-1. |
AGND | 11 | Analog ground pin |