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MAX1515ETG+
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
MAX1515
Low-V
oltage, Inter
nal Switch,
Step-Down/DDR Regulator
_______________________________________________________________________________________
7
1.25V OUTPUT EFFICIENCY
vs. LOAD CURRENT
MAX1515 toc01
LOAD CURRENT (A)
EFFICIENCY (%)
1
0.1
0.01
10
20
30
40
50
60
70
80
90
100
0
0.001
10
SINK, SKIP
SOURCE,
PWM
SINK, PWM
SOURCE, SKIP
V
IN
= 2.5V
V
OUT
= 1.25V
R
TOFF
= 110k
Ω
1.25V OUTPUT EFFICIENCY
vs. LOAD CURRENT
MAX1515 toc02
LOAD CURRENT (A)
EFFICIENCY (%)
1
0.1
0.01
10
20
30
40
50
60
70
80
90
100
0
0.001
10
SINK, SKIP
SOURCE,
PWM
SINK, PWM
SOURCE, SKIP
V
IN
= 2.5V
V
OUT
= 1.25V
R
TOFF
= 220k
Ω
1.25V OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX1515 toc03
LOAD CURRENT (A)
OUTPUT VOLTAGE (V)
3
2
-2
-1
0
1
1.246
1.250
1.254
1.258
1.242
-3
4
SINK, SKIP
SOURCE, PWM
SINK, PWM
SOURCE, SKIP
V
IN
= 2.5V
V
OUT
= 1.25V
R
TOFF
= 110k
Ω
0.9V OUTPUT EFFICIENCY
vs. LOAD CURRENT
MAX1515 toc04
LOAD CURRENT (A)
EFFICIENCY (%)
1
0.1
0.01
10
20
30
40
50
60
70
80
90
100
0
0.001
10
SINK, SKIP
SOURCE,
PWM
SINK, PWM
SOURCE, SKIP
V
IN
= 1.8V
V
OUT
= 0.9V
R
TOFF
= 110k
Ω
0.9V OUTPUT EFFICIENCY
vs. LOAD CURRENT
MAX1515 toc05
LOAD CURRENT (A)
EFFICIENCY (%)
1
0.1
0.01
10
20
30
40
50
60
70
80
90
100
0
0.001
10
SINK, SKIP
SOURCE,
PWM
SINK, PWM
SOURCE, SKIP
V
IN
= 1.8V
V
OUT
= 0.9V
R
TOFF
= 220k
Ω
0.9V OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX1515 toc06
LOAD CURRENT (A)
OUTPUT VOLTAGE (V)
3
2
-2
-1
0
1
0.896
0.900
0.904
0.908
0.892
-3
4
SINK, SKIP
SOURCE, PWM
SINK, PWM
SOURCE, SKIP
V
IN
= 1.8V
V
OUT
= 0.9V
R
TOFF
= 110k
Ω
SWITCHING FREQUENCY
vs. LOAD CURRENT
MAX1515 toc07
LOAD CURRENT (A)
SWITCHING FREQUENCY (kHz)
3
2
1
0
-1
-2
100
200
300
400
500
600
0
-3
4
PWM MODE
SKIP MODE
V
IN
= 2.5V
V
OUT
= 1.25V
T
ypical Operating Characteristics
(MAX1515 Circuit of Figure 1, V
IN
= 2.5V, V
DD
= V
CC
=
SHDN
= MODE = 3.3V, T
A
= +25°C, unless otherwise noted.)
MAX1515
Low-V
oltage, Inter
nal Switch,
Step-Down/DDR Regulator
8
_______________________________________________________________________________________
T
ypical Operating Characteristics (continued)
(MAX1515 Circuit of Figure 1, V
IN
= 2.5V, V
DD
= V
CC
=
SHDN
= MODE = 3.3V, T
A
= +25°C, unless otherwise noted.)
REF VOLTAGE
vs. REF LOAD CURRENT
MAX1515 toc08
REF LOAD CURRENT (
μ
A)
REF VOLTAGE ERROR (V)
80
60
20
40
1.098
1.100
1.102
1.104
1.096
01
0
0
REFOUT VOLTAGE REGULATION
vs. LOAD CURRENT
MAX1515 toc09
REFOUT LOAD CURRENT (mA)
REFOUT VOLTAGE (V)
10
5
0
-5
-10
1.240
1.245
1.250
1.255
1.260
1.265
1.235
-15
15
TOFF TIME
vs. TOFF RESISTOR
MAX1515 toc10
TOFF RESISTOR (k
Ω
)
TOFF (
μ
s)
400
300
200
100
1
2
3
4
5
0
05
0
0
PEAK CURRENT LIMIT
vs. SS VOLTAGE
MAX1515 toc11
SS VOLTAGE (V)
PEAK CURRENT LIMIT (A)
1.6
1.4
1.2
1
2
3
4
5
0
1.0
1.8
V
IN
= 2.5V
V
OUT
= 1.25V
R
TOFF
= 110k
Ω
STARTUP AND SHUTDOWN WAVEFORM
(HEAVY LOAD)
MAX1515 toc12
500
μ
s/div
3.3V
A
B
C
D
E
0
0
0
1A
0
1.25V
0
A: PGOOD, 5V/div
B: SS, 2V/div
C: SHDN, 5V/div
D: INDUCTOR CURRENT, 1A/div
E: OUTPUT VOLTAGE, 1V/div
SKIP = GND, R
LOAD
= 10
Ω
MAX1515
Low-V
oltage, Inter
nal Switch,
Step-Down/DDR Regulator
_______________________________________________________________________________________
9
T
ypical Operating Characteristics (continued)
(MAX1515 Circuit of Figure 1, V
IN
= 2.5V, V
DD
= V
CC
=
SHDN
= MODE = 3.3V, T
A
= +25°C, unless otherwise noted.)
STARTUP AND SHUTDOWN WAVEFORM
(LIGHT LOAD)
MAX1515 toc13
1ms/div
3.3V
A
B
C
D
E
0
0
0
1A
0
1.25V
0
A: PGOOD, 5V/div
B: SS, 2V/div
C: SHDN, 5V/div
D: INDUCTOR CURRENT, 1A/div
E: OUTPUT VOLTAGE, 1V/div
SKIP = GND, R
LOAD
= 100
Ω
DDR-MODE LOAD TRANSIENT
MAX1515 toc14
20
μ
s/div
2.5V
A
B
C
D
0
0
2A
0
2A
1.25V
A: LX, 2V/div
B: LOAD CONTROL,
5V/div
C: INDUCTOR CURRENT, 2A/div
D: OUTPUT VOLTAGE, 50mV/div
SKIP = GND
DDR-MODE LOAD TRANSIENT
MAX1515 toc15
20
μ
s/div
2.5V
A
B
C
D
0
0
2A
0
-2A
1.25V
A: LX, 2V/div
B: LOAD CONTROL,
5V/div
C: INDUCTOR CURRENT, 2A/div
D: OUTPUT VOLTAGE, 50mV/div
SKIP = GND
DDR-MODE LOAD TRANSIENT
MAX1515 toc16
20
μ
s/div
2.5V
A
B
C
D
0
0
2A
0
-2A
1.25V
A: LX, 2V/div
B: LOAD CONTROL,
5V/div
C: INDUCTOR CURRENT, 2A/div
D: OUTPUT VOLTAGE, 50mV/div
SKIP = GND
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
MAX1515ETG+
Mfr. #:
Buy MAX1515ETG+
Manufacturer:
Maxim Integrated
Description:
Switching Voltage Regulators 3A 1MHz Step-Down DDR Regulator
Lifecycle:
New from this manufacturer.
Delivery:
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