Rainbow Electronics MAX15001 - Manual (Page 17)

MAX15000/MAX15001
Current-Mode PWM Controllers with
Programmable Switching Frequency
______________________________________________________________________________________ 17
Selector Guide
*The MAX15001 does not have an internal bootstrap UVLO. The
MAX15001 starts operation as long as V
IN is higher than 9.5V
and UVLO/EN is higher than 1.23V.
PART
BOOTSTRAP
UVLO
STARTUP
VOLTAGE (V)
MAX DUTY
CYCLE (%)
MAX15000A Yes 22 50
MAX15000B Yes 22 75
MAX15001A* No 9.5 50
MAX15001B* No 9.5 75
Chip Information
PROCESS: BiCMOS
DRIVER
FB
CS
NDRV
GND
IN
COMP
UVLO/EN
IN
CLAMP
26.1V
*MAX15000 ONLY
*
UFLG
V CC
MAX15000
MAX15001
ERROR
AMP
CPWM
UVLO
RT
OSCILLATOR
ILIM
S
R
REG_OK
REGULATOR
(INTERNAL 5.25V
SUPPLY)
IN
V L
V CC
Q
1.23V
1.17V
V CS
1V
1.4V
DIGITAL
SOFT-START
REFERENCE
1.23V
N
210 µs
DELAY
BOOTSTRAP UVLO
21.6V
9.74V
Functional Diagram