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MAX1677EEE Datasheet(PDF) 5 Page - Maxim Integrated Products

Part # MAX1677EEE
Description  Compact, High-Efficiency, Dual-Output Step-Up and LCD Bias DC-DC Converter
PDF  16 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1677EEE Datasheet(HTML) 5 Page - Maxim Integrated Products

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Compact, High-Efficiency, Dual-Output
Step-Up and LCD Bias DC-DC Converter
_______________________________________________________________________________________
5
0.1
10
1
100
1000
EFFICIENCY vs. LOAD CURRENT
(VOUT = 3.3V)
LOAD CURRENT (mA)
100
60
70
80
90
PWM MODE
C = 2.4V
D = 1.2V
PFM MODE
A = VIN = 2.4V
B = VIN = 1.2V
C
D
B
A
100
80
60
40
20
0
0.1
1
10
100
1000
EFFICIENCY vs. LOAD CURRENT
(VOUT = 5V)
LOAD CURRENT (mA)
PWM MODE
A: VIN = 3.6V
B: VIN = 2.4V
C: VIN = 1.2V
A
D
E
F
B
C
PFM MODE
D: VIN = 3.6V
E: VIN = 2.4V
F: VIN = 1.2V
0
100
300
200
500
600
400
700
01.0
1.5
0.5
2.0
2.5
3.0
3.5
4.0
MAXIMUM LOAD CURRENT
vs. BATTERY INPUT VOLTAGE
(PWM MODE)
INPUT VOLTAGE (V)
VOUT = 3.3V
VOUT = 5V
40
0.1
100
10
1
EFFICIENCY vs. LOAD CURRENT
(LCD VOUT = 12V)
100
60
50
80
90
70
LOAD CURRENT (mA)
CIRCUIT OF FIGURE 2
A: VIN = 3.6V
B: VIN = 2.4V
C: VIN = 1.2V
A
B
C
50
0.1
100
10
1
EFFICIENCY vs. LOAD CURRENT
(LCD VOUT = 20V)
100
70
60
90
80
LOAD CURRENT (mA)
CIRCUIT OF FIGURE 2
A: VIN = 3.6V
B: VIN = 2.4V
C: VIN = 1.2V
A
B
C
1.2450
1.2475
1.2525
1.2500
1.2550
0
20406080
100
REFERENCE VOLTAGE
vs. REFERENCE CURRENT
REFERENCE CURRENT (
µA)
Typical Operating Characteristics
(Circuits of Figures 2 and 3, TA = +25°C, unless otherwise noted.)
0
100
50
250
200
150
400
350
300
450
01.0
0.5
1.5
2.0
2.5
3.0
LOAD CURRENT
vs. STARTUP VOLTAGE
START-UP VOLTAGE (V)
PWM
PFM
VOUT = 3.3V
TESTED WITH
RESISTIVE LOAD
0
0.06
0.04
0.02
0.10
0.08
0.18
0.16
0.14
0.12
0.20
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
NO-LOAD SUPPLY CURRENT vs.
INPUT VOLTAGE (LCD OFF)
INPUT VOTAGE (V)
VOUT = 3.3V
PFM MODE
LCD OFF
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
NO-LOAD SUPPLY CURRENT vs.
INPUT VOLTAGE (LCD ON)
INPUT VOLTAGE (V)
VOUT = 3.3V
PFM MODE
VLCD = -20V



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