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MIC2875 数据表(PDF) 2 Page - Microchip Technology

部件名 MIC2875
功能描述  4.8A ISW, Synchronous Boost Regulator with Bi-Directional Load Disconnect
PDF  24 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

MIC2875 数据表(HTML) 2 Page - Microchip Technology

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MIC2875
DS20005549A-page 2
 2015 Microchip Technology Inc.
Typical Application Schematics
Functional Block Diagrams
AGND
SW
IN
EN
PGND
OUT
/PG
FB
V
IN
V
OUT
5.0V
L1 1μH
2.5V to 5.0V
C1
4.7μF
10V
V
IN
R1
1MΩ
R2
910kΩ
R3
200kΩ
C2*
22μF
10V
MIC2875 (Adjustable Output)
MIC2875 (Fixed Output)
AGND
SW
V
IN
IN
EN
PGND
OUT
/PG
OUTS
V
OUT
5.0V
L1 1μH
2.5V to 5.0V
C1
4.7μF
10V
V
IN
R1
1MΩ
C2*
22μF
10V
* Two more 22
F capacitors should be added in parallel with C2 for V
IN > 5.0V.
50
60
70
80
90
100
0.001
0.010
0.100
1.000
LOAD CURRENT (A)
VIN = 3.6V
VIN = 3.0V
VIN = 2.5V
VOUT =5.0V
L = 1μH
COUT = 22μF
Efficiency vs. Load Current
MIC2875 (Fixed Output)
MIC2875 (Adj. Output)
EN
IN
SW
ANTI-
RINGING
REFERENCE
GENERATOR
2MHz
OSCILLATOR
OC
4.8A
PWM LOGIC
CONTROL
+
MINIMUM
SWITCHING
CURRENT
SENSE
+
SLOPE
COMPENSATION
VIN
OUT
BODY
DRIVER
HS
DRIVER
LS
DRIVER
/PG
PGND
AGND
VREF
SOFT-
START
PWM
OUTS
VIN
EN
IN
SW
ANTI-
RINGING
REFERENCE
GENERATOR
2MHz
OSCILLATOR
OC
4.8A
PWM LOGIC
CONTROL
+
MINIMUM
SWITCHING
CURRENT
SENSE
+
SLOPE
COMPENSATION
VIN
OUT
BODY
DRIVER
HS
DRIVER
LS
DRIVER
PGL
PGH
/PG
FB
PGND
AGND
VREF
SOFT-
START
PWM



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