1 Features
• 1.8-V to 5.5-V input voltage range
• 0.4-V to 3.6-V output voltage range
• 275-nA typical quiescent current
• 600-mA output current
• 1% output voltage accuracy
• 4-nA typical shutdown current
• Output discharge
• VSET pin-selectable output voltage through a
single resistor
– TPS628436: 0.4 V to 0.8 V
– TPS628437: 0.8 V to 1.8 V
– TPS628438: 1.8 V to 3.6 V
• Optimized for small passive components
– 1-μH inductor
– Down to 4.7-μF COUT
• Low output voltage ripple in power save mode
• RF-friendly and fast transient DCS-Control
• Automatic transition to no ripple 100% mode
• 0603-inductor and 0402-capacitor size supported
• Tiny 6-pin, 0.35-mm pitch WCSP package with
0.84mm² size
• Pin-to-pin compatible to the TPS6280x family (1 A)

2 Applications
• Wearable electronics
• Headsets, headphones, and earbuds
• Mobile phones
• Medical sensor patches
• Hearing aid

3 Description
The TPS62843 is a high efficiency step-down
converter family with ultra-low operating quiescent
current of typically 275 nA. The device features a 4-
nA shutdown (typical) current when disabled.
The device uses DCS-Control with a low and RFfriendly
output voltage ripple to power radios.
The device operates with a typical switching
frequency of 1.5 MHz and extends a high efficiency
at light-load down to 100-μA load current and below.
18 pre-defined output voltages can be selected by
connecting a resistor to the VSET pin, making the
family usable across various applications with a
minimum set of passive components.