Microchip Technology MCP1633 SEPIC, Руководство пользователя

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MCP1633 SEPIC LED Driver Demonstration Board User’s Guide
DS50002945A-page 10
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2020 Microchip Technology Inc.
1.4 TECHNICAL SPECIFICATIONS
• Input voltage: +7V to +18V (surge voltage 42V for a maximum 180 ms,
30-second repetition rate)
• Undervoltage lockout circuit, software configurable (7V and 18V default
thresholds)
• Overvoltage lockout circuit, hardware configurable (16V default thresholds)
• Load disconnect protection
• Typical output current: 200 mA (with hardware adjustments)
• Maximum output current: 1500 mA
• Fully protected against short-circuit and no load conditions
Figure 1-1 shows a simplified block diagram of the application.
FIGURE 1-1: MCP1633 LED Driver Block Diagram.
MCP1633
V
IN
V
OUT
SS/V
REF
COMP
EN/SYNC
FB
CS
V
EXT
PGND
V
CC
R
R
C
SS
R
fsw
Fsw
DIMM
IPO
R
ipo
IOUT
OVP
SDRV
ISP
ISN
FAULT
FAULT
5V
LDO
L1A
L1B
R
SLOPE
R
SENSE
R
S
R
fbT
R
fbB
C
IN
C
C
D
C
OUT
LED
String
Q1
Q2
DIMMING
PIC12F1822
5V
MCP9700
5V
FAULT
DIMMING
5V
FAULT
INDICATOR
V
IN
R1
R2