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MAX8728ETJ+ Datasheet(PDF) 8 Page - Maxim Integrated Products

Part # MAX8728ETJ+
Description  Low-Cost, Multiple-Output Power Supply for LCD Monitors/TVs
Download  29 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX8728ETJ+ Datasheet(HTML) 8 Page - Maxim Integrated Products

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Low-Cost, Multiple-Output
Power Supply for LCD Monitors/TVs
8
_______________________________________________________________________________________
Typical Operating Characteristics
(Circuit of Figure 1. VIN = VINL = VSUPP = 12V, AVDD = 13.5V, VGON = 28V, VGOFF = -6V, VOUT1 = 3.3V, FSEL = GND, TA = +25°C,
unless otherwise noted.)
STEP-DOWN REGULATOR EFFICIENCY
vs. LOAD CURRENT
LOAD CURRENT (A)
50
55
60
65
70
75
80
85
90
0.01
0.1
1
10
EN = GND
EN = VL
NORMALIZED STEP-DOWN REGULATOR
OUTPUT VOLTAGE vs. LOAD CURRENT
LOAD CURRENT (A)
3.10
3.15
3.20
3.25
3.30
3.35
3.40
0.01
0.1
1
10
EN = GND
EN = VL
STEP-DOWN REGULATOR
LOAD TRANSIENT RESPONSE
0V
0V
0V
LOAD CONTROL, 5V/div
LX1, 20V/div
OUT1, AC, 100mV/div
INDUCTOR CURRENT, 1A/div
4
μs/div
STEP-DOWN REGULATOR
SOFT-START (HEAVY LOAD)
0V
0V
0V
VIN, 5V/div
OUT1, 2V/div
INDUCTOR CURRENT, 1A/div
400
μs/div
STEP-UP REGULATOR EFFICIENCY
vs. LOAD CURRENT (MEASURED AT L1/C3 JUNCTION)
LOAD CURRENT (A)
60
65
70
75
80
85
90
95
100
0.001
0.01
0.1
1
10
NORMALIZED STEP-UP REGULATOR
OUTPUT VOLTAGE vs. LOAD CURRENT
LOAD CURRENT (A)
13.30
13.35
13.40
13.45
13.50
13.55
13.60
0.01
0.1
1
10


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