Datasheet

MAX764/MAX765/MAX766
-5V/-12V/-15V or Adjustable,
High-Efficiency, Low I
Q
DC-DC Inverters
_______________________________________________________________________________________ 3
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.
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.)
I
V
OUT
I
+ (V+) ≥ 10V
I
LX
I
+ (V+) ≤ 20V
I
V
OUT
I
+ (V+) ≥ 10V
CONDITIONS
µs1.8 2.3 2.8t
OFF
Minimum Switch Off-Time
µs12 16 20t
ON
Maximum Switch On-Time
A0.5 0.75I
PEAK
Peak Current at LX
±30
±10 µA
±5
LX Leakage Current
Ω1.4 2.5LX On-Resistance
UNITSMIN TYP MAXSYMBOLPARAMETER
MAX76_C
MAX76_E
MAX76_M
__________________________________________Typical Operating Characteristics
(V+ = 5V, V
OUT
= -5V, T
A
= +25°C, unless otherwise noted.)
100
0
0.1 10 1000
MAX764
EFFICIENCY vs. LOAD CURRENT
MAX764-01
LOAD CURRENT (mA)
EFFICIENCY (%)
90
80
70
60
50
40
30
20
10
1 100
CIRCUIT OF FIGURE 2
V
OUT
= -5V
±
4%
V+ = 5V
V+ = 10V
V+ = 15V
100
0
0.1 10 1000
MAX765
EFFICIENCY vs. LOAD CURRENT
MAX764-02
LOAD CURRENT (mA)
EFFICIENCY (%)
90
80
70
60
50
40
30
20
10
1 100
V+ = 8V
V+ = 5V
CIRCUIT OF FIGURE 2
V
OUT
= -12V
±
4%
100
0
0.1 10 1000
MAX766
EFFICIENCY vs. LOAD CURRENT
MAX764-03
LOAD CURRENT (mA)
EFFICIENCY (%)
90
80
70
60
50
40
30
20
10
1 100
V+ = 5V
CIRCUIT OF FIGURE 2
V
OUT
= -15V
±
4%