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MAX848ESE Datasheet(PDF) 5 Page - Maxim Integrated Products

Part # MAX848ESE
Description  1-Cell to 3-Cell, High-Power, Low-Noise, Step-Up DC-DC Converters
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

MAX848ESE Datasheet(HTML) 5 Page - Maxim Integrated Products

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1-Cell to 3-Cell, High-Power,
Low-Noise, Step-Up DC-DC Converters
_______________________________________________________________________________________
5
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
100
90
40
0.1
1
10
100
1000
MAX849
EFFICIENCY vs. LOAD CURRENT
(VOUT = 3.3V)
50
LOAD CURRENT (mA)
60
70
80
VIN = 2.4V
PFM
PWM
VIN = 0.9V
VIN = 1.2V
100
90
40
30
0.1
1
10
100
1000
MAX849
EFFICIENCY vs. LOAD CURRENT
(VOUT = 5V)
50
LOAD CURRENT (mA)
60
70
80
VIN = 1.2V
VIN = 2.4V
VIN = 3.6V
PFM
PWM
70
60
0.1
1
10
100
1000
MAX848
EFFICIENCY vs. LOAD CURRENT
(VOUT = 3.3V)
80
LOAD CURRENT (mA)
90
100
VIN = 2.4V
VIN = 1.2V
VIN = 0.9V
PFM
PWM
14
0
0
2
3
1
4
6
NO-LOAD BATTERY CURRENT
vs. INPUT VOLTAGE
4
12
INPUT VOLTAGE (V)
5
8
2
10
6
TA = +85°C
TA = +25°C
TA = -40°C
1.252
1.248
-40
0
-20
20
60
100
80
REFERENCE VOLTAGE
vs. TEMPERATURE
1.249
1.251
TEMPERATURE (°C)
40
1.250
18
14
0
0
2
1
3
6
5
SHUTDOWN CURRENT
vs. INPUT VOLTAGE
4
16
12
4
8
2
10
6
TA = +85°C
TA = +25°C
TA = -40°C
INCLUDES ALL EXTERNAL
COMPONENT LEAKAGES.
CAPACITOR LEAKAGE
DOMINATES AT
TA = +85°C
INPUT VOLTAGE (V)
2.0
1.8
1.6
0.6
0.01
0.1
1
10
100
1000
START-UP VOLTAGE vs. LOAD CURRENT
(VOUT = 3.3V, PWM MODE)
0.8
LOAD CURRENT (mA)
1.0
1.2
1.4
TA = +85°C
TA = +25°C
TA = -40°C
1.252
1.238
0
20
10
30
50
60
70
80
REFERENCE VOLTAGE
vs. REFERENCE CURRENT
1.242
1.250
REFERENCE CURRENT (
µA)
40
1.246
1.240
1.248
1.244
0.25
-0.25
0.1875
0.6875
0.4375
0.9375
ADC LINEARITY ERROR
vs. FULL-SCALE INPUT VOLTAGE
0.15
FULL-SCALE INPUT VOLTAGE (V)
-0.15
0.05
-0.05
AIN1
AIN2



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