MAX1808EUB+ Maxim Integrated, MAX1808EUB+ Datasheet - Page 8

• Manufacturer Part Number: MAX1808EUB+
• Description: Current & Power Monitors & Regulators
• Manufacturer: Maxim Integrated

Low-Cost, Small, 4.5V to 28V Wide Operating
Range, DC-DC Synchronous Buck Controller
MAX15026
8
V
LIM
EN
RT
CC
IN
BGAP_OK
BGAP_OK
VIN_OK
VIN_OK
V
V
V
BGAP
BGAP
DRV
V
REF
GENERATOR
REGULATOR
SHUTDOWN
INTERNAL
BANDGAP
THERMAL
CURRENT
VOLTAGE
AND ILIM
UVLO
UVLO
UVLO
DRV
GEN
V
OK
IN
CC
ENABLE
COMPARATOR
V
REF
BGAP_OK
EN_INT
BGAP_OK
VL_OK
VDRV_OK
SHUTDOWN
VIN_OK
OSCILLATOR
V
BGAP
V
REF
OSCILLATOR
VIN_OK
= 1.24V
= 0.6V
ENABLE
DC-DC
LOGIC
I
AND
BIAS
OSC_ENABLE
CK
GENERATOR
REFERENCE
BANDGAP
CURRENT
MAIN
BIAS
DH_DL_ENABLE
TIMEOUT
HICCUP
HICCUP
ENABLE
V
V
REF
REF
CK
CK
CK
CURRENT-LIMIT
CURRENT-LIMIT
COMPARATOR
COMPARATOR
VALLEY
SINK
CONTROL
GENERATOR
HICCUP LOGIC
LOGIC
SOFT-START/
PWM
SOFT-STOP
LOGIC AND
RAMP
LIM/20
LIM/10
HICCUP
HICCUP TIMEOUT
Functional Diagram
DRIVER
DAC_VREF
RAMP
BOOST
V
FB1
REF
DH_DL_ENABLE
MAX15026
DRIVER
COMPARATOR
DRIVER
COMPARATOR
ENABLE
HIGH-
LOW-
SIDE
SIDE
g
M
PGOOD
PWM
GATEP
PWM
Maxim Integrated
DH
GND
COMP
BST
LX
DRV
DL
FB
PGOOD
GND