SLVSCN5B june 2014 – may 2023 TPS65262-1
PRODUCTION DATA
PIN | DESCRIPTION | |
---|---|---|
NAME | NO. | |
LVIN2 | 1 | Input power supply for LDO2. Connect LVIN2 pin as close as possible to the (+) terminal of an input ceramic capacitor (suggest 1 µF). |
LOUT2 | 2 | LDO2 output. Connect LOUT2 pin as close as
possible to the (+) terminal of an output ceramic capacitor (suggest
1 µF). |
LFB2 | 3 | Feedback Kelvin sensing pin for LDO2 output voltage. Connect this pin to LDO2 resistor divider. |
LEN2 | 4 | Enable for LDO2. Float to enable. |
PGOOD | 5 | An open-drain output, asserts low if the output voltage of any buck is beyond regulation range due to thermal shutdown, overcurrent, undervoltage, or ENx shut down. |
MODE | 6 | When high, an automatic power-up or power-down sequence is provided according to the states of EN1, EN2, and EN3 pins. |
FB2 | 7 | Feedback Kelvin sensing pin for buck2 output voltage. Connect this pin to buck2 resistor divider. |
EN2 | 8 | Enable for buck2. Float to enable. Can use this pin to adjust the input undervoltage lockout of buck2 with a resistor divider. |
BST2 | 9 | Boot-strapped supply to the high-side floating gate driver in buck2. Connect a capacitor (recommend 47 nF) from BST2 pin to LX2 pin. |
LX2 | 10 | Switching node connection to the inductor and bootstrap capacitor for buck2. The voltage swing at this pin is from a diode voltage below the ground up to VIN2 voltage. |
PGND2 | 11 | Power ground connection of buck2. Connect PGND2 pin as close as possible to the (–) terminal of VIN2 input ceramic capacitor. |
VIN2 | 12 | Input power supply for buck2. Connect VIN2 pin as close as possible to the (+) terminal of an input ceramic capacitor (suggest 10 µF). |
VIN3 | 13 | Input power supply for buck3. Connect VIN3 pin as close as possible to the (+) terminal of an input ceramic capacitor (suggest 10 µF). |
PGND3 | 14 | Power ground connection of buck3. Connect PGND3 pin as close as possible to the (–) terminal of VIN3 input ceramic capacitor. |
LX3 | 15 | Switching node connection to the inductor and bootstrap capacitor for buck3. The voltage swing at this pin is from a diode voltage below the ground up to VIN3 voltage. |
BST3 | 16 | Boot-strapped supply to the high-side floating gate driver in buck3. Connect a capacitor (recommend 47 nF) from BST3 pin to LX3 pin. |
EN3 | 17 | Enable for buck3. Float to enable. Can use this pin to adjust the input undervoltage lockout of buck3 with a resistor divider. |
FB3 | 18 | Feedback Kelvin sensing pin for buck3 output voltage. Connect this pin to buck3 resistor divider. |
AGND | 19 | Analog ground common to buck controllers and other analog circuits. It must be routed separately from high-current power grounds to the (–) terminal of the bypass capacitor of input voltage VIN. |
V7V | 20 | Internal LDO for gate driver and internal controller. Connect a 10-µF capacitor from the pin to power ground. |
COMP1 | 21 | Error amplifier output and loop compensation pin for buck1. Connect a series resistor and capacitor to compensate the control loop of buck1 with peak current PWM mode. |
SS1 | 22 | Soft-start and tracking input for buck1. An internal 5-µA pullup current source is connected to this pin. The soft-start time can be programmed by connecting a capacitor between this pin and ground. |
FB1 | 23 | Feedback Kelvin sensing pin for buck1 output voltage. Connect this pin to buck1 resistor divider. |
EN1 | 24 | Enable for buck1. Float to enable. Can use this pin to adjust the input undervoltage lockout of buck1 with a resistor divider. |
BST1 | 25 | Boot-strapped supply to the high side floating gate driver in buck1. Connect a capacitor (recommend 47 nF) from BST1 pin to LX1 pin. |
LX1 | 26 | Switching node connection to the inductor and bootstrap capacitor for buck1. The voltage swing at this pin is from a diode voltage below the ground up to VIN1 voltage. |
PGND1 | 27 | Power ground connection of Buck1. Connect PGND1 pin as close as possible to the (–) terminal of VIN1 input ceramic capacitor. |
VIN1 | 28 | Input power supply for buck1. Connect VIN1 pin as close as possible to the (+) terminal of an input ceramic capacitor (suggest 10 µF). |
LEN1 | 29 | Enable for LDO1. Float to enable. |
LFB1 | 30 | Feedback Kelvin sensing pin for LDO1 output voltage. Connect this pin to LDO1 resistor divider. |
LOUT1 | 31 | LDO1 output. Connect LOUT1 pin as close as
possible to the (+) terminal of an output ceramic capacitor (suggest
1 µF). |
LVIN1 | 32 | Input power supply for LDO1. Connect LVIN1 pin as close as possible to the (+) terminal of an input ceramic capacitor (suggest 1 µF). |
PAD | — | There is no electric signal down bonded to thermal pad inside IC. Exposed thermal pad must be soldered to PCB for optimal thermal performance. |