MAX1684 Datasheet, PDF (9/16 Pages) Maxim Integrated Products – Low-Noise, 14V Input, 1A, PWM Step-Down Converters

Low-Noise, 14V Input, 1A, PWM
Step-Down Converters
ILIM/SS
IN
AIN
SHDN
CVL
REF
SYNC/PWM
STBY
CC
THERMAL
VL
SHUTDOWN
ON
CVL
4µA
ILIM THRESHOLD
MAX1684
MAX1685
CVH
VH
REF
UNDERVOLTAGE
COMPARATOR
2.5V
OSC
SYNC
&
STANDBY
CONTROL
SLOPE COMPENSATION
PWM MODE
NORMAL MODE
LOW-POWER MODE
GM
INTEGRATOR
PFM
CURRENT
COMPARATOR
PWM
COMPARATOR
ILIM
COMPARATOR
CONTROL
& DRIVER
LOGIC
PFM
COMPARATOR
ZERO-CROSSING
COMPARATOR
2.5V
LX
PGND
CVL
BOOT
0.125V
FB
AGND
Figure 2. Functional Diagram
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