MAX16821BEVKIT+ Maxim Integrated Products, MAX16821BEVKIT+ Datasheet - Page 13

• Manufacturer Part Number: MAX16821BEVKIT+
• Description: KIT EVAL FOR MAX16821B
• Manufacturer: Maxim Integrated Products

Specifications of MAX16821BEVKIT+

• Current - Output / Channel: 660mA
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 28V
• Features: Dimmable
• Voltage - Input: 7 ~ 24V
• Utilized Ic / Part: MAX16821
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 5 shows the MAX16821A/MAX16821B/MAX16821C
configured as a synchronous boost converter with
MODE connected to V
voltage charges the inductor. During the off-time, the
Figure 5. Synchronous Boost LED Driver (Output Voltage Not to Exceed 28V)
V
LED
C10
R9
R10
C9
C11
R5
C8
R7
R8
Applications Information
______________________________________________________________________________________
CC
18
15
16
17
19
20
21
. During the on-time, the input
CLP
OVI
EAOUT
EAN
DIFF
CSP
CSN
SGND
14
I.C.
22
Drivers with Rapid Current Pulsing
Boost LED Driver
SENSE- SENSE+
OUTV
13
R3
23
High-Power Synchronous HBLED
RT/SYNC
12
24
C3
MAX16821C
MAX16821A
MAX16821B
R4
SGND
V
EN
11
25
CC
V
C7
IN
MODE
10
26
IN
ON/OFF
C6
CLKOUT
inductor discharges to the output. The output voltage
cannot go below the input voltage in this configuration.
Resistor R1 senses the inductor current and resistor R2
senses the LED current. The outer LED current regula-
tion loop programs the average current in the inductor,
thus achieving tight LED current regulation.
V
27
9
CC
C5
SGND
V
PGND
28
8
DD
N.C.
N.C.
BST
LX
DL
DH
4
7
6
5
3
2
1
R5
C4
Q2
D1
L1
7V TO 28V
V
IN
Q1
C1
R2
C2
V
LED
LED
STRING
13