Datasheet

8Maxim Integrated
MAX16909
36V, 220kHz to 1MHz Step-Down Converter
with Low Operating Current
Typical Operating Characteristics (continued)
(V
SUP
= V
SUPSW
= V
EN
= 14V, V
OUT
= 1.8V, R1 = 80.6kΩ, R2 = 100kΩ, T
A
= +25NC (Figure 4), unless otherwise noted.)
181612 144 6 8 102
02
0
V
BIAS
LOAD REGULATION
(1.8V/400kHz)
MAX16909 toc18
I
BIAS
(mA)
V
BIAS
(V)
5.20
5.18
5.16
5.14
5.12
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
T
A
= 125°C
T
A
= -40°C
T
A
= 25°C
MAX16909 toc22
V
OUT
V
IN
V
PGOOD
V
LX
10V/div
2V/div
10V/div
5V/div
0V
0V
0V
0V
10ms/div
LINE TRANSIENT TEST
(1.8V/400kHz)
1.8V/400kHz
0.6
I LOAD
MAX16909 toc21
V
OUT
V
IN
V
PGOOD
V
LX
10V/div
2V/div
10V/div
5V/div
0V
0V
0V
0V
10ms/div
DIPS AND DROP TEST
(1.8V/400kHz)
0.6
I
RESISTIVE LOAD
I
SHDN
vs. TEMPERATURE
I
SHDN
(µA)
4
4
5
5
5
5
6
6
6
4
MAX16909 toc20
5
TEMPERATURE (°C)
1109580655035205-10-25-40 125
V
EN
= 0V
I
SHDN
vs. SUPPLY VOLTAGE
MAX16909 toc19
SUPPLY VOLTAGE (V)
I
SHDN
(µA)
3831241710
2
4
6
8
10
12
14
16
18
20
0
34
5
T
A
= -40°C
T
A
= 25°C
T
A
= 125°C
V
EN
= 0V
V
IN
= 14V