參數(shù)資料
型號(hào): MAX8726EUE
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi): 穩(wěn)壓器
英文描述: Triple-Output TFT-LCD DC-DC Converters
中文描述: 2 A SWITCHING REGULATOR, 1250 kHz SWITCHING FREQ-MAX, PDSO16
封裝: 4.40 MM, 1.10 MM HEIGHT, 0.65 MM PITCH, MO-153-AB, TSSOP-16
文件頁(yè)數(shù): 6/16頁(yè)
文件大?。?/td> 640K
代理商: MAX8726EUE
M
Triple-Output TFT-LCD
DC-DC Converters
6
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(Circuit of Figure 5, V
IN
= 3.3V, T
A
= +25°C, unless otherwise noted.)
8
10
18
20
12
16
14
22
24
5
8
7
9
6
10
11
12
MAXIMUM POSITIVE CHARGE-PUMP OUTPUT
VOLTAGE vs. SUPPLY VOLTAGE
M
V
SUPP
(V)
V
P
I
POS
= 10mA
V
POS
= 22V
I
POS
= 1mA
I
POS
= 20mA
0.80
0.85
0.90
1.05
1.00
0.95
1.10
1.15
1.20
2.5
3.5
INPUT VOLTAGE (V)
3.0
4.0
4.5
5.0
5.5
SWITCHING FREQUENCY
vs. INPUT VOLTAGE
M
S
MEASURED FROM THE
FALLING EDGE OF LX
V
MAIN
= 10V
I
MAIN
= 100mA
1.244
1.246
1.250
1.248
1.252
1.254
0
20
15
10
30
25
5
35
40
45
50
REFERENCE VOLTAGE
vs. REFERENCE LOAD CURRENT
M
I
REF
(
μ
A)
V
R
V
IN
= 3.3V
V
10mV/div
V
NEG
10mV/div
V
POS
10mV/div
RIPPLE WAVEFORMS
MAX1748/8726 toc13
1
μ
s/div
V
MAIN
= 10V, I
MAIN
= 200mA,
V
NEG
= -5V, I
NEG
= 10mA,
V
POS
= 15V, I
POS
= 10mA
I
200mA/div
I
500mA/div
V
MAIN
200mV/div
LOAD-TRANSIENT RESPONSE
MAX1748/8726 toc14
100
μ
s/div
V
IN
= 3.3V, V
MAIN
= 10V,
R
MAIN
= 500
TO 50
(20mA TO 200mA)
I
MAIN
200mA/div
I
LX
500mA/div
V
MAIN
200mV/div
LOAD-TRANSIENT RESPONSE
WITHOUT INTEGRATOR
MAX1748/8726 toc15
100
μ
s/div
V
IN
= 3.3V, V
MAIN
= 10V, INTG = REF,
R
MAIN
= 500
TO 50
(20mA TO 200mA)
-11
-9
-10
-7
-8
-4
-5
-6
-3
5
8
V
SUPN
(V)
6
7
9
10
11
12
MAXIMUM NEGATIVE CHARGE-PUMP
OUTPUT VOLTAGE vs. SUPPLY VOLTAGE
M
V
N
I
NEG
= 20mA
I
NEG
= 1mA
I
NEG
= 10mA
V
NEG
= -10mA
14.4
14.5
14.6
14.9
15.0
14.7
14.8
15.2
15.1
15.3
0
8
6
10
2
4
12
14 16 18
20
POSITIVE CHARGE-PUMP OUTPUT
VOLTAGE vs. LOAD CURRENT
M
I
POS
(mA)
V
P
V
SUPN
= 12V
V
SUPN
= 8V
V
SUPN
= 10V
40
50
80
60
70
90
100
0
8
6
10
2
4
12
14 16 18
20
POSITIVE CHARGE-PUMP EFFICIENCY
vs. LOAD CURRENT
M
I
POS
(mA)
E
V
SUPP
= 12V
V
SUPP
= 8V
V
SUPP
= 10V
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