Features
• 260-nA Ultra-Low IQ into the VOUT Pin
• 40-nA Ultra-Low IQ into the VIN Pin
• Operating Input Voltage from 0.9 V to 5.5 V
• Adjustable Output Voltage from 2.5 V to 5.5 V
• Fixed Output Voltage Versions Available
• Typical 0.8-A Switch Peak Current Limit
• Regulated Output Voltage in the Down Mode
• True Disconnection During Shutdown
• Up to 80% Efficiency at 10-μA Load with Fixed Output
Voltage Versions
• Up to 96% Efficiency from 10-mA to 300-mA Load
• WLCSP-6, DFN2X2-6 packages

Applications
• Battery-Powered Devices
• Battery-Powered Wearable Applications
• Fiber Optical Modules
• Internet of Things Devices
• Battery-Powered Water/Gas Meters

Description
The TPQ05100x series of products are synchronous
boost converters with less than 260-nA ultra-low quiescent
current. The device has an ultra-low under-voltage lockout threshold to support different kinds of battery voltages
as low as 0.9 V. The ultra-low 260-nA quiescent current
increases light load efficiency and thus increases battery
life.
The TPQ05100x series of products have various voltage
options to support fixed output voltage ranging from 2.5 V
to 5 V, and adjustable output voltage ranging from 2.5 V to
5.5 V. The device has a true-shutdown feature that avoids
leakage current during the shutdown mode to further save
system level quiescent current.
The TPQ05100x series provides the down mode and the
pass-through mode to support different scenarios. In the
down mode, the device can still regulate output voltage to
a desired level. In the pass-through mode, the TPQ05100x
devices work as switches that the output voltage follows
input voltage.
The TPQ05100x provides both adjustable voltage version
and fixed voltage version with DFN2X2-6 and WLCSP-6
packages.