MAX1832(2003) Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX1832
(Rev.:2003)
(Rev.:2003)
Maxim Integrated
MAX1832 Datasheet PDF : 12 Pages
| |||
High-Efficiency Step-Up Converters with
Reverse Battery Protection
(VOUT = +3.3V, VBATT = +2V, unless otherwise noted.) (Figure 1)
Typical Operating Characteristics
EFFICIENCY vs. LOAD CURRENT
(VOUT = 5.0V)
95
EFFICIENCY vs. LOAD CURRENT
(VOUT = 3.3V)
95
EFFICIENCY vs. LOAD CURRENT
(VOUT = 2.5V)
85
90 VBATT = +3.3V
85
80
VBATT = +2.7V
75
70
65
0.1
VBATT = +1.5V
VSHDN = VBATT
R1 = 309Ω
R2 = 100kΩ
MAX1834
1
10
100
1000
ILOAD (mA)
90
VBATT = +2.7V
VBATT = +2.0V
85
VBATT = +1.5V
80
75
0.1
VSHDN = VBATT
MAX1835
1
10
100
1000
ILOAD (mA)
VBATT = +2.0V
80
VBATT = +1.5V
75
70
0.1
1
10
ILOAD (mA)
VSHDN = VBATT
R1 = 100kΩ
R2 = 100kΩ
CIN = 20µF
COUT = 20µF
MAX1834
10
100
MAXIMUM OUTPUT CURRENT
vs. BATTERY VOLTAGE
250
VOUT = +2.5V
200
VOUT = +3.3V
150
100
VOUT = +5.0V
50
0
1
2
3
4
5
6
VBATT (V)
INPUT CURRENT AND OUTPUT VOLTAGE
vs. BATTERY VOLTAGE (SHUTDOWN, LOADED)
300
VSHDN = 0
250
RLOAD = 22Ω
MAX1833
6 MAX1832/35 toc07
5
200
4
VOUT
150
3
100
IBATT
2
50
1
0
0
-50
-1
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6
VBATT (V)
STARTUP BATTERY VOLTAGE
vs. LOAD RESISTANCE
1.7
VSHDN = VBATT
1.6
1.5
VOUT = +5.0V
1.4
VOUT = +3.3V
1.3
VOUT = +2.5V
1.2
10
100
1k
10k
RLOAD (Ω)
INPUT CURRENT AND OUTPUT VOLTAGE
vs. BATTERY VOLTAGE (ON, NO LOAD)
160 VSHDN = VBATT
140 RLOAD = ∞
R3 = 1MΩ
120 R4 = 220kΩ
C1 = 10nF
100
IBATT
80
VOUT
4.0 MAX1832/35 toc08
3.5
3.0
2.5
2.0
60
1.5
40
1.0
20
0.5
0
IBATT
0
-20
-0.5
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6
VBATT (V)
INPUT CURRENT AND OUTPUT VOLTAGE
vs. BATTERY VOLTAGE (SHUTDOWN, NO LOAD)
1.2
VSHDN = 0
1.0 RLOAD = ∞
MAX1833
6 MAX1832/35 toc06
5
0.8
VOUT
4
0.6
3
0.4
2
IBATT
0.2
1
0
0
-0.2
-1
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6
VBATT (V)
INPUT CURRENT AND OUTPUT VOLTAGE
vs. BATTERY VOLTAGE (ON, LOADED)
300
VSHDN = VBATT
250
VOUT = 3.3V
RLOAD = 22Ω
R3 = 1MΩ
200 R4 = 220kΩ
IBATT
6 MAX1832/35 toc09
5
4
C1 = 10nF
150
3
100
VOUT
2
50
1
0
0
-50
-1
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6
VBATT (V)
4 _______________________________________________________________________________________
Share Link: