Rainbow Electronics MAX1541 - Manual (Page 38)

MAX1540/MAX1541
Dual Step-Down Controllers with Saturation
Protection, Dynamic Output, and Linear Regulator
38 ______________________________________________________________________________________
Figure 14. Current-Sense Configurations
MAX1540
MAX1541
V OUT
C OUT
V IN
L
INDUCTOR
R L
C IN
LSAT
d) LOSSLESS INDUCTOR SENSING
CSN
CSP
GND
DL
DH
LX
DISABLE
LSAT
C EQ
R EQ
R
BIAS
= R
EQ
MAX1540
MAX1541
V OUT
C OUT
V IN
L
C IN
LSAT
c) LOW-SIDE MOSFET SENSING
CSP
GND
CSN
DL
DH
LX
DISABLE
LSAT
MAX1540
MAX1541
V OUT
C OUT
V IN
L
C
IN
R SENSE
LSAT
b) LOW-SIDE SERIES RESISTOR SENSING
CSP
GND
CSN
DL
DH
LX
CONNECT TO
PREFERRED
LSAT SETTING
MAX1540
MAX1541
V OUT
C OUT
V IN
L
C IN
LSAT
a) OUTPUT SERIES RESISTOR SENSING
GND
DL
DH
LX
CONNECT TO
PREFERRED
LSAT SETTING
CSN
CSP
R SENSE