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MCP16301HT-E/CH Datasheet(PDF) 15 Page - Microchip Technology

Part # MCP16301HT-E/CH
Description  High-Voltage Input Integrated Switch Step-Down Regulator
PDF  40 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP16301HT-E/CH Datasheet(HTML) 15 Page - Microchip Technology

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 2011-2015 Microchip Technology Inc.
DS20005004D-page 15
MCP16301/H
To calculate the shunt resistance, the maximum IBOOST
and IZ currents are used at the minimum input voltage
(Equation 4-2).
EQUATION 4-2:
SHUNT RESISTANCE
VZ and IZ can be found on the Zener diode
manufacturer’s data sheet (typical IZ =1 mA).
FIGURE 4-4:
Series Regulator Boost Supply.
Series regulator applications use a Zener diode to drop
the excess voltage. The series regulator bias source
can be input or output voltage derived, as shown in
Figure 4-4. For proper circuit operation, the boost
supply must remain between 3.0V and 5.5V at all
times.
RSH
VINMIN VZ
–
IBoost IZ
+
------------------------------
=
CB
VOUT
VIN
CIN
COUT
SW
BOOST
GND
EN
FB
L
RTOP
RBOT
VIN
Boost Diode
FW Diode
12V
15V to 36V
CB
VIN
CIN
SW
BOOST
GND
EN
FB
L
VIN
Boost Diode
FW Diode
2V
12V
VZ =7.5V
VZ =7.5V
VOUT
RTOP
RBOT
COUT
MCP16301/H
MCP16301/H



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