PT6910 Datasheet, PDF (3/4 Pages) Texas Instruments – 12 Watt 5V/3.3V Input Plus to Minus Voltage Converter

ORDER INFORMATION
Valid Part Number
PT6910
PIN CONFIGURATION
Package Type
SOT-89-5L
PT6910
Top Code
PT6910
PIN DESCRIPTION
Pin Names
LX
GND
ADJ
ISNS
VIN
Exposed PAD
Description
Drain of The Internal NMOS Switch
Signal Ground
• Multi-Function ON/OFF and Brightness Control Pin
• Leave floating for normal operation.
• Drive to voltage below 0.2V to turn off output current.
• Drive with DC voltage (0.3V to 1.3V) to adjust output current
from 25% to 110% of Iout.
• Drive with PWM signal from open-collector or open-drain
transistor , to adjust output current from 25% to 100% of Iout
for f>10KHz and from 1% to 100% for f<500Hz.
• Connect a capacitor from this pin to ground to increase
soft-start time.
Output Current Sense Pin
Input Supply Pin. Must be locally bypassed.
Power Ground
Pin No.
1
2
3
4
5
PRE1.0
3
April 2010