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MAX8792ETD+T
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P28
MAX8792
Single Quick-PWM Step-Down
Contr
oller with Dynamic REFIN
_______________________________________________________________________________________
7
1.05V OUTPUT EFFICIENCY
vs. LOAD CURRENT
MAX8792 toc04
LOAD CURRENT (A)
EFFICIENCY (%)
1
0.1
30
40
50
60
70
80
90
100
20
0.01
10
7V
20V
SKIP MODE
PWM MODE
12V
1.05V OUTPUT EFFICIENCY
vs. LOAD CURRENT
MAX8792 toc05
LOAD CURRENT (A)
EFFICIENCY (%)
1
0.1
30
40
50
60
70
80
90
100
20
0.01
10
SKIP MODE
PWM MODE
LOW-NOISE
MODE
1.05V OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX8792 toc06
LOAD CURRENT (A)
OUTPUT VOLTAGE (V)
46
8
2
1.05
1.04
1.06
1.07
1.03
01
0
SKIP MODE
PWM MODE
LOW-NOISE
MODE
SWITCHING FREQUENCY
vs. LOAD CURRENT
MAX8792 toc07
LOAD CURRENT (A)
SWITCHING FREQUENCY (kHz)
1
0.1
50
100
150
200
250
300
350
0
0.01
10
SKIP MODE
LOW-NOISE
MODE
PWM MODE
PWM MODE SWITCHING FREQUENCY
vs. INPUT VOLTAGE
MAX8792 toc08
INPUT VOLTAGE (V)
SWITCHING FREQUENCY (kHz)
14
18
10
250
270
260
280
290
300
310
320
330
240
62
2
I
LOAD
= 5A
NO LOAD
SWITCHING FREQUENCY
vs. TEMPERATURE
MAX8792 toc09
TEMPERATURE (
°
C)
SWITCHING FREQUENCY (kHz)
20
40
60
80
-20
0
280
290
300
270
-40
100
I
LOAD
= 10A
I
LOAD
= 5A
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
MAX8792 toc10
INPUT VOLTAGE (V)
MAXIMUM OUTPUT CURRENT (A)
15
18
21
91
2
13.1
13.0
13.4
13.3
13.2
13.6
13.5
12.9
62
4
MAXIMUM OUTPUT CURRENT
vs. TEMPERATURE
MAX8792 toc11
TEMPERATURE (
°
C)
MAXIMUM OUTPUT CURRENT (A)
20
40
60
80
100
-20
0
13
12
11
17
16
14
15
20
19
18
10
-40
WITHOUT TEMPERATURE
COMPENSATION
R4 = R5 = 49.9k
Ω
WITH
TEMPERATURE
COMPENSATION
(FIGURE 1)
NO-LOAD SUPPLY CURRENT I
BIAS
vs. INPUT VOLTAGE
MAX8792 toc12
INPUT VOLTAGE (V)
I
BIAS
(mA)
12
15
18
21
9
6
4
2
10
8
12
14
16
0
62
4
SKIP MODE
PWM MODE
LOW-NOISE MODE
T
ypical Operating Characteristics (continued)
(MAX8792 Circuit of Figure 1, V
IN
= 12V, V
DD
= 5V,
SKIP
= GND, R
TON
= 200k
Ω
, T
A
= +25°C, unless otherwise noted.)
MAX8792
Single Quick-PWM Step-Down
Contr
oller with Dynamic REFIN
8
_______________________________________________________________________________________
NO-LOAD SUPPLY CURRENT I
IN
vs. INPUT VOLTAGE
MAX8792 toc13
INPUT VOLTAGE (V)
I
IN
(mA)
12
15
18
21
9
0.1
1
10
100
0.01
62
4
SKIP MODE
PWM MODE
LOW-NOISE MODE
REF OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX8792 toc14
LOAD CURRENT (
μ
A)
OUTPUT VOLTAGE (V)
30
50
70
90
100
10
20
40
60
80
0
1.99
2.00
2.01
2.02
1.98
-10
110
REFIN-TO-FB OFFSET
VOLTAGE DISTRIBUTION
MAX8792 toc15
OFFSET VOLTAGE (mV)
SAMPLE PERCENTAGE (%)
10
30
20
40
50
+85
°
C
+25
°
C
SAMPLE SIZE = 100
0
-2.5
-2.0
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
2.5
20V ILIM THRESHOLD
VOLTAGE DISTRIBUTION
MAX8792 toc16
ILIM THRESHOLD VOLTAGE (mV)
SAMPLE PERCENTAGE (%)
20
10
40
30
50
0
18.0
18.4
18.8
19.2
19.6
20.0
20.4
20.8
21.2
21.6
22.0
+85
°
C
+25
°
C
SAMPLE SIZE = 100
SOFT-START WAVEFORM
(HEAVY LOAD)
MAX8792 toc17
200
μ
s/div
C. V
OUT
, 1V/div
B. INDUCTOR CURRENT,
10A/div
1.5V
8A
0
5V
0
0
0
5V
A
B
C
D
A. EN, 5V/div
B. PGOOD, 5V/div
SOFT-START WAVEFORM
(LIGHT LOAD)
MAX8792 toc18
200
μ
s/div
C. V
OUT
, 1V/div
B. INDUCTOR CURRENT,
10A/div
1.5V
0
5V
0
0
0
5V
A
B
C
D
A. EN, 5V/div
B. PGOOD, 5V/div
SHUTDOWN WAVEFORM
MAX8792 toc19
200
μ
s/div
D. V
OUT
, 1V/div
E. INDUCTOR CURRENT,
5A/div
1.5V
0
5V
5V
0
0
0
0
5V
A
B
C
D
E
A. EN, 5V/div
B. PGOOD, 5V/div
C. DL, 5V/div
LOAD-TRANSIENT RESPONSE
(PWM MODE)
MAX8792 toc20
20
μ
s/div
C. INDUCTOR CURRENT,
10A/div
1.45V
8A
1A
1.55V
8A
1A
A
B
C
A. I
OUT
= 1A TO 8A, 10A/div
B. V
OUT
, 50mV/div
LOAD-TRANSIENT RESPONSE
(SKIP MODE)
MAX8792 toc21
20
μ
s/div
C. INDUCTOR CURRENT,
10A/div
1.45V
8A
1A
1.55V
10A
0A
A
B
C
A. I
OUT
= 1A TO 8A, 10A/div
B. V
OUT
, 50mV/div
T
ypical Operating Characteristics (continued)
(MAX8792 Circuit of Figure 1, V
IN
= 12V, V
DD
= 5V,
SKIP
= GND, R
TON
= 200k
Ω
, T
A
= +25°C, unless otherwise noted.)
MAX8792
Single Quick-PWM Step-Down
Contr
oller with Dynamic REFIN
_______________________________________________________________________________________
9
OUTPUT OVERLOAD WAVEFORM
(UVP ENABLED)
MAX8792 toc22
200
μ
s/div
C. DL, 5V/div
D. PGOOD, 5V/div
5V
5V
14A
0
0
1.5V
0
0
A
B
C
D
A. INDUCTOR CURRENT,
10A/div
B. V
OUT
, 1V/div
OUTPUT OVERVOLTAGE WAVEFORM
MAX8792 toc23
100
μ
s/div
C. PGOOD, 5V/div
5V
5V
0
0
1.5V
0
A
B
C
A. V
OUT
, 1V/div
B. DL, 5V/div
DYNAMIC OUTPUT-VOLTAGE TRANSITION
(PWM MODE)
MAX8792 toc24
20
μ
s/div
C. INDUCTOR CURRENT,
10A/div
D. LX, 10V/div
-10A
0
1.5V
1.5V
1.05V
1.05V
12V
0
A
B
C
D
A. REFIN, 500mV/div
B. V
OUT
, 200mV/div
DYNAMIC OUTPUT-VOLTAGE TRANSITION
(SKIP MODE)
MAX8792 toc25
100
μ
s/div
C. INDUCTOR CURRENT,
10A/div
D. LX, 10V/div
10A
0
1.5V
1.5V
1.05V
1.05V
12V
0
A
B
C
D
A. REFIN, 500mV/div
B. V
OUT
, 200mV/div
T
ypical Operating Characteristics (continued)
(MAX8792 Circuit of Figure 1, V
IN
= 12V, V
DD
= 5V,
SKIP
= GND, R
TON
= 200k
Ω
, T
A
= +25°C, unless otherwise noted.)
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P28
MAX8792ETD+T
Mfr. #:
Buy MAX8792ETD+T
Manufacturer:
Maxim Integrated
Description:
Switching Controllers Single Quick-PWM Step-Down Controller
Lifecycle:
New from this manufacturer.
Delivery:
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MAX8792ETD+T
