MAX16802B Maxim Integrated Products, MAX16802B Datasheet - Page 14

• Manufacturer Part Number: MAX16802B
• Description: Offline and DC-DC PWM Controllers
• Manufacturer: Maxim Integrated Products

Offline and DC-DC PWM Controllers for
High-Brightness LED Drivers
*The MAX16802 does not have an internal bootstrap UVLO.
The MAX16802 starts operation as long as the V
er than +7V, (the guaranteed output with an IN pin voltage of
+10.8V), and the UVLO/EN pin is high.
14
MAX16801A
MAX16801B
MAX16802A
MAX16802B
COMP
UVLO
CS
PART
FB
IN
______________________________________________________________________________________
CLAMP
BOOTSTRAP
26.1V
IN
ERROR
AMP
UVLO
Yes
Yes
No
No
0.3V
V
CS
1.38V
V
OPWM
STARTUP
VOLTAGE
Selector Guide
SOFT-START
10.8*
10.8*
(V)
DIGITAL
22
22
CPWM
LIM
CC
MAX DUTY
CYCLE (%)
pin is high-
REFERENCE
1.23V
50
75
50
75
*OSCILLATOR
MAX16801
MAX16802
264kHz
1.28V
1.23V
21.6V
9.74V
BOOTSTRAP UVLO**
*MAX16801A/MAX16802A: 50% MAXIMUM DUTY CYCLE
MAX16801B/MAX16802B: 75% MAXIMUM DUTY CYCLE
**MAX16801 ONLY
UVLO
SHUTDOWN
THERMAL
R
S
TOP VIEW
UVLO/EN
DIM/FB
COMP
CS
Q
1
2
4
3
IN
REG_OK
REGULATOR
(INTERNAL 5.25V SUPPLY)
MAX16801
MAX16802
Functional Diagram
µMAX
Pin Configuration
V
V
CC
L
DRIVER
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6
8
7
5
IN
NDRV
GND
V
CC
V
NDRV
GND
CC