Datasheet

(T
A
= +25°C, using Figure 5, unless otherwise noted.)
LOW-SIDE DRIVER (DL) SINK
AND SOURCE CURRENT
MAX16818 toc09
3A/div
100ns/div
C
LOAD
= 22nF
V
IN
= 12V
HIGH-SIDE DRIVER (DH) SINK
AND SOURCE CURRENT
MAX16818 toc08
2A/div
100ns/div
C
LOAD
= 22nF
V
IN
= 12V
DRIVER FALL TIME
vs. DRIVER LOAD CAPACITANCE
MAX16818 toc07
CAPACITANCE (nF)
t
F
(ns)
2116116
20
40
60
80
100
0
1
V
IN
= 12V
f
SW
= 250kHz
DH
DL
DRIVER RISE TIME
vs. DRIVER LOAD CAPACITANCE
MAX16818 toc06
CAPACITANCE (nF)
t
R
(ns)
2116116
20
40
60
80
100
0
1
V
IN
= 12V
f
SW
= 250kHz
DH
DL
V
CC
LOAD REGULATION
vs. INPUT VOLTAGE
MAX16818 toc05
V
CC
LOAD CURRENT (mA)
V
CC
(V)
125100755025
4.85
4.95
5.05
5.15
5.25
4.75
0 150
V
IN
= 12V
V
IN
= 5V
V
IN
= 24V
HICCUP CURRENT LIMIT vs. R
EXT
MAX16818 toc04
R
EXT
(MΩ)
CURRENT LIMIT (A)
161284
23.5
24.0
24.5
25.0
25.5
26.0
23.0
0 20
V
IN
= 12V
f
SW
= 250kHz
R1 = 1mΩ
V
OUT
= 1.5V
CURRENT-SENSE THRESHOLD
vs. OUTPUT VOLTAGE
MAX16818 toc03
V
OUT
(V)
(V
CSP
- V
CSN
) (mV)
4321
26.5
27.0
27.5
28.0
28.5
29.0
26.0
0 5
V
IN
= 12V
f
SW
= 250kHz
SUPPLY CURRENT vs. TEMPERATURE
MAX16818 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
603510-15
62
64
66
68
70
60
-40 85
V
IN
= 12V
f
SW
= 250kHz
C
DL
/C
DH
= 22nF
SUPPLY CURRENT (I
Q
) vs. FREQUENCY
MAX16818 toc01
FREQUENCY (kHz)
SUPPLY CURRENT (mA)
13001100900700500300
10
20
30
40
50
60
0
100 1500
EXTERNAL CLOCK
NO DRIVER LOAD
V
IN
= 12V
V
IN
= 24V
V
IN
= 5V
Maxim Integrated │ 5
www.maximintegrated.com
MAX16818 1.5MHz, 30A High-Efciency, LED Driver
with Rapid LED Current Pulsing
Typical Operating Characteristics