Datasheet

MAX16936
36V, 220kHz to 2.2MHz Step-Down Converter
with 28µA Quiescent Current
5Maxim Integrated
Typical Operating Characteristics
(V
SUP
= V
SUPSW
= 14V, V
EN
= 14V, V
OUT
= 5V, V
FYSNC
= 0V, R
FOSC
= 12kI, T
A
= +25NC, unless otherwise noted.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX16936 toc09
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
2616
15
20
25
30
35
40
45
50
10
63
6
5V/2.2MHz
SKIP MODE
SWITCHING FREQUENCY vs. R
FOSC
MAX16936 toc08
R
FOSC
(kΩ)
SWITCHING FREQUENCY (MHz)
1027242
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
0
12 132
F
SW
vs. TEMPERATURE
MAX16936 toc07
TEMPERATURE (°C)
F
SW
(MHz)
11095-25 -10 5 35 50 6520 80
2.04
2.08
2.12
2.16
2.20
2.24
2.28
2.00
-40 125
V
IN
= 14V,
PWM MODE
V
OUT
= 5V
V
OUT
= 3.3V
F
SW
vs. LOAD CURRENT
MAX16936 toc06
I
LOAD
(A)
F
SW
(MHz)
2.01.51.00.5
426
427
428
429
430
431
432
433
434
435
425
0 2.5
VIN = 14V,
PWM MODE
V
OUT
= 5V
V
OUT
= 3.3V
F
SW
vs. LOAD CURRENT
MAX16936 toc05
I
LOAD
(A)
F
SW
(MHz)
2.01.51.00.5
2.12
2.14
2.16
2.18
2.20
2.22
2.24
2.26
2.28
2.30
2.10
0 2.5
VIN = 14V,
PWM MODE
V
OUT
= 5V
V
OUT
= 3.3V
V
OUT
LOAD REGULATION
MAX16936 toc04
I
LOAD
(A)
V
OUT
(V)
2.01.51.00.5
4.92
4.94
4.96
4.98
5.00
5.02
5.04
5.06
5.08
5.10
4.90
0 2.5
V
OUT
= 5V, V
IN
= 14V
PWM MODE
400kHz
2.2MHz
V
OUT
LOAD REGULATION
MAX16936 toc03
I
LOAD
(A)
V
OUT
(V)
2.01.51.00.5
4.92
4.94
4.96
4.98
5.00
5.02
5.04
5.06
5.08
5.10
4.90
0 2.5
V
OUT
= 5V, V
IN
= 14V
SKIP MODE
400kHz
2.2MHz
EFFICIENCY vs. LOAD CURRENT
MAX16936 toc02
LOAD CURRENT (A)
EFFICIENCY (%)
0.10.001
10
20
30
40
50
60
70
80
90
100
0
01
0
f
SW
= 400kHz, V
IN
= 14V
SKIP MODE
PWM MODE3.3V
3.3V
5V
5V
EFFICIENCY vs. LOAD CURRENT
MAX16936 toc01
LOAD CURRENT (A)
EFFICIENCY (%)
0.10.001
10
20
30
40
50
60
70
80
90
100
0
01
0
f
SW
= 2.2MHz, V
IN
= 14V
SKIP MODE
PWM MODE
3.3V
3.3V
5V
5V