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ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - DC/DC voltage regulator Boost TDFN 14 EP
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MAX8627
Low V
BATT
, 20µA IQ, 1MHz Synchronous
Boost Converter with True Shutdown
4
Maxim Integrated
EFFICIENCY vs. LOAD CURRENT
WITH 3.3V OUTPUT
MAX8627 toc01
LOAD CURRENT (mA)
EFFICIENCY (%)
1001010.1
10
20
30
40
50
60
70
80
90
100
0
0.01 1000
V
BATT
= 3.0V
V
BATT
= 1.5V
V
BATT
= 1.8V
V
BATT
= 2.4V
EFFICIENCY vs. LOAD CURRENT
WITH 5V OUTPUT
MAX8627 toc02
LOAD CURRENT (mA)
EFFICIENCY (%)
1001010.1
10
20
30
40
50
60
70
80
90
100
0
0.01 1000
V
BATT
= 4.2V
V
BATT
= 1.8V
V
BATT
= 2.4V
V
BATT
= 3.0V
V
BATT
= 3.6V
MAXIMUM LOAD CURRENT
vs. INPUT VOLTAGE
MAX8627 toc03
INPUT VOLTAGE (V)
MAXIMUM LOAD CURRENT (A)
5.04.03.02.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
1.0
V
POUT
= 3.3V
V
POUT
= 5V
OUTPUT VOLTAGE vs. LOAD CURRENT
MAX8627 toc04
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
1001010.1
4.94
4.96
4.98
5.00
5.02
5.04
5.06
5.08
5.10
5.12
4.92
0.01 1000
V
BATT
= 4.2V
V
BATT
= 1.8V
V
BATT
= 2.4V
V
BATT
= 3.0V
V
BATT
= 3.6V
NO-LOAD INPUT CURRENT
vs. INPUT VOLTAGE WITH 3.3V OUTPUT
MAX8627 toc05
INPUT VOLTAGE (V)
INPUT CURRENT (mA)
3.02.52.01.5
10
20
30
40
50
60
70
80
90
0
1.0 3.5
T
A
= +25
°
C
T
A
= +85
°
C
T
A
= 40
°
C
R1 = 1.15M
Ω
, R2 = 499k
Ω
OUTPUT ONLY LOADED WITH THE FB
RESISTOR-DIVIDER NETWORK.
NO-LOAD INPUT CURRENT
vs. INPUT VOLTAGE WITH 5V OUTPUT
MAX8627 toc06
INPUT VOLTAGE (V)
INPUT CURRENT (mA)
432
20
40
60
80
100
120
140
160
180
0
15
T
A
= +25
°
C
T
A
= +85
°
C
T
A
= 40
°
C
R1 = 2M
Ω
, R2 = 499k
Ω
OUTPUT ONLY LOADED WITH THE FB
RESISTOR-DIVIDER NETWORK.
SHUTDOWN CURRENT
vs. INPUT VOLTAGE
MAX8627 toc07
INPUT VOLTAGE (V)
SHUTDOWN CURRENT (nA)
4.53.52.5
100
200
300
400
500
600
700
0
1.5 5.5
T
A
= +25°C
T
A
= +85
°
C
T
A
= 40°C
STARTUP VOLTAGE vs. LOAD CURRENT
WITH 5V OUTPUT
MAX8627 toc08
LOAD CURRENT (mA)
STARTUP VOLTAGE (V)
600 800400200
0.5
1.0
1.5
2.0
2.5
3.0
0
0 1000
T
A
= +25
°
C
T
A
= +85°C
T
A
= 40°C
SOFT-START TIME vs. LOAD CURRENT
MAX8627 toc09
LOAD CURRENT (A)
SOFT-START TIME (ms)
0.3 0.40.20.1
1
2
3
4
5
6
0
00.5
Typical Operating Characteristics
(Circuit of Figure 1, V
OUTS
= V
POUT
= 5V, V
ON
= V
BATT
= 3.6V, T
A
= +25°C, unless otherwise noted.)