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MCP16413 Datasheet(PDF) 32 Page - Microchip Technology

Part # MCP16413
Description  Low IQ Boost Converter with Programmable Low Battery, UVLO and Automatic Input-to-Output Bypass Operation
PDF  44 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP16413 Datasheet(HTML) 32 Page - Microchip Technology

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MCP1641X
DS20006394D-page 32
 2020-2021 Microchip Technology Inc. and its subsidiaries
FIGURE 7-5:
Dynamic Changing Method for UVLOs’ Thresholds with Output Shutdown at 2.8V to
Protect Li-Ion Batteries from Overdischarging.
Note:
RH and RL set the UVLOSTART to 3.3V. For battery voltage higher than 3.3V, the switching is enabled
and the device regulates to 5V. After start-up, the PGT signal turns on the N-MOS switch and puts in
parallel RH and RH1 and UVLOSTART changes dynamically from 3.3V to 2.8V. As a result, when the
battery gets discharged to 2.8V, the LBO switches to low level, turns on the NPN transistor (Q1) and
asserts to low the enable input, turning off the output of the converter.
VOUT
5V
VIN
GND
VFB
SW
L1
4.7 µH
VOUT
+
–
1.5 M
360 k
EN
39.2 k
UVLO
PGT
1M
LBO
COUT
10 µF
10 k
226 k
RH
REN
RL
ENABLE
1M
LOW BATTERY (2.8V)
1.5 M
RH1
PGT
UVLO START = 3.3V
UVLO STOP = 2.8V
Q1
NMOS
PGT
V
IN
V
IN
1V/div
V
OUT
2V/div
LBO Signal
2V/div
1s/div
I
= 10 mA
CIN
10 µF



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