-5V/-12V/-15V or Adjustable,
High-Efficiency, Low I
Q
DC-DC Inverters
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 5V, I
LOAD
= 0mA, C
REF
= 0.1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
LX Leakage Current
LX On-Resistance
Peak Current at LX
Maximum Switch On-Time
Minimum Switch Off-Time
I
PEAK
t
ON
t
OFF
SYMBOL
CONDITIONS
MAX76_C
MIN
TYP
MAX
±5
±10
±30
1.4
0.5
12
1.8
0.75
16
2.3
20
2.8
2.5
Ω
A
µs
µs
µA
UNITS
MAX764/MAX765/MAX766
I
LX
I
+ (V+)
≤
20V
I
V
OUT
I
+ (V+)
≥
10V
I
V
OUT
I
+ (V+)
≥
10V
MAX76_E
MAX76_M
Note 1:
See Maximum Output Current vs. Supply Voltage graph in the
Typical Operating Characteristics.
Guarantees are based on
correlation to switch on-time, switch off-time, on-resistance, and peak current rating.
Note 2:
Circuit of Figure 2.
__________________________________________Typical Operating Characteristics
(V+ = 5V, V
OUT
= -5V, T
A
= +25°C, unless otherwise noted.)
MAX764
EFFICIENCY vs. LOAD CURRENT
MAX764-01
MAX765
EFFICIENCY vs. LOAD CURRENT
MAX764-02
MAX766
EFFICIENCY vs. LOAD CURRENT
90
80
MAX764-03
100
90
80
EFFICIENCY (%)
V+ = 5V
100
90
80
EFFICIENCY (%)
V+ = 5V
V+ = 8V
100
EFFICIENCY (%)
70
60
50
40
30
20
10
0
0.1
1
10
100
1000
LOAD CURRENT (mA)
CIRCUIT OF FIGURE 2
V
OUT
= -5V ±4%
V+ = 15V
V+ = 10V
70
60
50
40
30
20
10
0
0.1
1
10
70
60
50
40
30
20
V+ = 5V
CIRCUIT OF FIGURE 2
V
OUT
= -12V ±4%
100
1000
10
0
0.1
1
CIRCUIT OF FIGURE 2
V
OUT
= -15V ±4%
10
100
1000
LOAD CURRENT (mA)
LOAD CURRENT (mA)
_______________________________________________________________________________________
3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
