RT6212A/B
Operation
The RT6212A/B is a synchronous step-down converter
with advanced constant on-time control mode. Using
the ACOTTM control mode can reduce the output
capacitance and provide fast transient response. It can
minimize the component size without additional
external compensation network.
UVLO Protection
To protect the chip from operating at insufficient supply
voltage, the UVLO is needed. When the input voltage
of VIN is lower than the UVLO falling threshold voltage,
the device will be lockout.
Thermal Shutdown
Current Protection
When the junction temperature exceeds the OTP
threshold value, the IC will shut down the switching
operation. Once the junction temperature cools down
and is lower than the OTP lower threshold, the
converter will autocratically resume switching.
The inductor current is monitored via the internal
switches cycle-by-cycle. Once the output voltage drops
under UV threshold, the RT6212A/B will enter hiccup
mode.
Copyright © 2017 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS6212A/B-05 July 2017
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