Hello Team ,
We are using TPS61169 in our board for IR LED Booster.we are facing one issue with this booster like when shutdown mode is on then also this booster will generating 5V as output
VIN-----5V
IR LED -----4 IR LED with Series connection (1.75V forward Voltage )
Test Case---1
CTRL : Pull Down
VIN : 5V
Vout or VCC_IRLED : 5V
Observation : All IR LED will ON with 50% intensity
Test Case---2
CTRL : Pull Up
VIN : 5V
Vout or VCC_IRLED : 5.89V
Observation : All IR LED will ON with 100% intensity
For more Information use below image :