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MAX749C/D Datasheet(PDF) 3 Page - Maxim Integrated Products

Part # MAX749C/D
Description  Digitally Adjustable LCD Bias Supply
PDF  12 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX749C/D Datasheet(HTML) 3 Page - Maxim Integrated Products

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Digitally Adjustable LCD Bias Supply
_______________________________________________________________________________________
3
85
65
-24
-20
-12
-4
EFFICIENCY vs.
OUTPUT VOLTAGE
70
80
OUTPUT VOLTAGE (V)
-16
-8
75
-40mA
V+ = 3V
RBASE = 470Ω
RSENSE = 0.25Ω
TRANSISTOR : ZTX750
-22
-18
-14
-10
-6
-20mA
-5mA
85
65
-24
-20
-12
-4
EFFICIENCY vs.
OUTPUT VOLTAGE
70
80
OUTPUT VOLTAGE (V)
-16
-8
75
-5mA
-20mA
-40mA
V+ = 5V
RSENSE = 0.25Ω
TRANSISTOR : SMD10P05L
-22
-18
-14
-10
-6
80
65
0
EFFICIENCY vs. OUTPUT
CURRENT – PNP
OUTPUT CURRENT (mA)
70
75
10
20
30
40
50
85
60
-24V
-12V
-5V
V+ = 3V
RBASE = 470Ω
RSENSE = 0.25Ω
TRANSISTOR: ZTX750
80
64
0
20
60
100
EFFICIENCY vs. OUTPUT
CURRENT – PNP
68
76
OUTPUT CURRENT (mA)
40
80
72
78
74
70
66
10
30
50
70
90
V+ = 3V
RBASE = 160Ω
RSENSE = 0.25Ω
TRANSISTOR = ZTX750
-12V
-5V
-24V
0
2
LOAD CURRENT vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
4
50
100
150
200
250
300
350
400
450
500
35
6
-5V
-12V
-24V
-48V
RBASE = 160Ω
RSENSE = 0.25Ω
TRANSISTOR = ZTX750
85
65
010
30
50
EFFICIENCY vs. OUTPUT
CURRENT – MOSFET
70
80
OUTPUT CURRENT (mA)
20
40
75
5
152535
45
V+ = 5V
RSENSE = 0.25Ω
TRANSISTOR: SMD10P05L
-12V
-5V
-24V
0
LOAD CURRENT vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
50
100
150
200
250
300
350
34
5
6
2
RBASE = 470Ω
RSENSE = 0.25Ω
TRANSISTOR = ZTX750
-5V
-12V
-24V
-48V
400
__________________________________________Typical Operating Characteristics
(TA = +25°C, L = 47µH, unless otherwise noted.)



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