MCP16251 One-Cell Boost Converter with External UVLO Circuit
DS50002561A-page 20
2017 Microchip Technology Inc.
FIGURE 2-5:
Board Hysteresis Profile; X-Axis is V
IN
and Y-Axis is EN.
The UVLO circuit consumes approximately 0.2 µA before start-up and 1.6-2 µA when
the Boost Converter is switching.
Figure 2-6
shows the UVLO circuit current
consumption vs. the input voltage.
FIGURE 2-6:
UVLO Circuit Current Consumption vs. Input Voltage.
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
0.6
0.7
0.8
0.9
1
1.1
1.2
1.3
V
IN
(V)
UVLO Start
UVLO Stop
I
Q
(µ
A)
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