Typical operating characteristics – Rainbow Electronics MAX17075 User Manual
Page 7
MAX17075
Boost Regulator with Integrated Charge Pumps,
Switch Control, and High-Current Op Amp
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7
STEP-UP REGULATOR EFFICIENCY
vs. LOAD CURRENT
MAX17075 toc01
LOAD CURRENT (mA)
EFFICIENCY (%)
100
10
10
20
30
40
50
60
70
80
90
100
0
1
1000
V
IN
= 5V
V
IN
= 3.3V
V
IN
= 2.5V
STEP-UP REGULATOR OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX17075 toc02
LOAD CURRENT (mA)
OUTPUT ERROR (%)
700 800 900
100 200 300 400 500 600
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
-1.0
0
1000
STEP-UP REGULATOR LINE REGULATION
UNDER DIFFERENT LOADS
MAX17075 toc03
INPUT VOLTAGE (V)
OUTPUT ERROR (%)
4.5
3.0
3.5
4.0
-0.15
-0.10
-0.05
0
0.05
0.10
0.15
0.20
-0.20
2.5
5.0
300mA LOAD
100mA LOAD
200mA LOAD
NO
LOAD
STEP-UP REGULATOR SWITCHING
FREQUENCY vs. INPUT VOLTAGE
MAX17075 toc04
INPUT VOLTAGE (V)
SWITCHING FREQUENCY (MHz)
4.5
3.0
3.5
4.0
1.17
1.18
1.19
1.20
1.21
1.22
1.23
1.24
1.16
2.5
5.0
150mA LOAD
STEP-UP REGULATOR STARTUP
WITH HEAVY LOAD (600mA)
MAX17075 toc05
2ms/div
0V
V
IN
5V/div
V
AVDD
5V/div
LX
10V/div
I
L
1A/div
0V
0A
0V
STEP-UP REGULATOR LOAD-TRANSIENT
RESPONSE (100mA TO 800mA)
MAX17075 toc06
40
μs/div
R
COMP
= 82k
Ω
C
COMP1
= 220pF
C
COMP2
= 18pF
0V
V
AVDD
(AC-COUPLED)
500mV/div
LOAD CURRENT
500mA/div
I
L
2A/div
0A
0A
MAX17075 toc07
STEP-UP REGULATOR PULSED
LOAD-TRANSIENT RESPONSE (80mA TO 2.08mA)
10
μs/div
R
COMP
= 82k
Ω
C
COMP1
= 220pF
C
COMP2
= 18pF
0V
V
AVDD
(AC-COUPLED)
500mV/div
LOAD CURRENT
1A/div
I
L
2A/div
0A
0A
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)