MAX1729EUB Datasheet Download

Part No.:
MAX1729EUB
Download:
Download Datasheet
Description:
[ECB and LCD Display Bias Supply with Accurate Output Voltage and Temperature Compensation]
File Size:
160 K
Page:
12 Pages
Logo:
Manufacturer:
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
PCB Prototype
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ECB and LCD Display Bias Supply with Accurate
Output Voltage and Temperature Compensation
MAX1729
Typical Operating Characteristics
(Circuit of Figure 2, T
A
= +25°C, unless otherwise noted.)
EFFICIENCY vs. OUTPUT CURRENT
V
OUT
= 9.4 (CTLIN AT 50% DUTY CYCLE)
MAX1729 toc 01
EFFICIENCY vs. OUTPUT CURRENT
V
OUT
= 16.4 (CTLIN = IN)
MAX1729 toc 02
NO-LOAD SUPPLY CURRENT vs.
SUPPLY VOLTAGE
MAX1729 toc 03
60
60
0.40
0.35
SUPPLY CURRENT (mA)
0.30
0.25
0.20
0.15
0.10
0.05
V
OUT
= 9.4V
V
OUT
= 2.5V
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V
OUT
= 16.4V
50
V
IN
= 2.7V
EFFICIENCY (%)
40
30
20
10
0
0.01
0.1
1
50
EFFICIENCY (%)
40
30
20
10
0
V
IN
= 2.7V
V
IN
= 5.5V
V
IN
= 5.5V
10
0.01
0.1
1
10
6.0
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
SUPPLY VOLTAGE (V)
MAXIMUM OUTPUT CURRENT vs.
SUPPLY VOLTAGE
MAX1729 toc 04
PS TO OUT (LDO)
POWER-SUPPLY REJECTION RATIO
MAX1729 toc 05
SHUTDOWN SUPPLY CURRENT
MAX1729 toc 06
7
MAXIMUM OUTPUT CURRENT (mA)
6
5
4
3
2
1
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V
OUT
= 16.4V
V
OUT
= +2.5V
0
3.0
2.5
SHUTDOWN CURRENT (µA)
2.0
1.5
1.0
0.5
0
-20
PSRR (dB)
6.0
V
OUT
= 9.4V
-40
-60
-80
-100
1
10
100
1k
10k
100k
SUPPLY VOLTAGE (V)
FREQUENCY (Hz)
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
INPUT VOLTAGE (V)
OUTPUT VOLTAGE vs.
DUTY CYCLE
MAX1729 toc 07
START-UP DELAY FROM SHUTDOWN
MAX1729 toc 08
DELAY TO SHUTDOWN
MAX1729 toc 09a
18
16
14
OUTPUT VOLTAGE (V)
12
10
8
6
4
2
0
0
V
CTLIN
5V/div
V
REF
1V/div
V
CTLIN
5V/div
V
REF
1V/div
V
TC
1V/div
V
OUT
10V/div
10 20 30 40 50 60 70 80 90 100
DUTY CYCLE (%)
20ms/div
V
IN
= 5V
I
O
= 0.5mA
V
TC
1V/div
V
OUT
10V/div
V
IN
= 5V
I
O
= 0.5mA
500ms/div
4
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