MAX1775 Maxim, MAX1775 Datasheet - Page 6

• Manufacturer Part Number: MAX1775
• Description: Dual-Output Step-Down DC-DC Converter for PDA/Palmtop Computers
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V
(Note 2)
Dual-Output Step-Down
DC-DC Converter for PDA/Palmtop Computers
Note 1: This parameter is guaranteed based on the LXC P-channel current limit and the LXC N-channel valley current.
Note 2: Specifications to -40°C are guaranteed by design and not production tested.
(Circuit of Figure 1, V
6
LOGIC INPUTS
SHDNM, SHDNC Input Low
Voltage
SHDNM, SHDNC Input High
Voltage
SHDNM, SHDNC Input Low
Current
SHDNC Input High Current
SHDNM Input High Current
IN
100
90
80
70
60
50
40
30
20
10
_______________________________________________________________________________________
0
= +12V, V
1
V
MAIN OUTPUT EFFICIENCY vs. LOAD
IN
= +3.3V
PARAMETER
V
IN
10
MAIN
= +5V
V
IN
= +12V
= V
LOAD (mA)
MAIN
100
INC
V
IN
= +15V V
= +3.3V, V
= V
1000
CS-
IN
= +18V
= V
SYMBOL
CORE
10,000
CS+
= +3.3V, V
= +1.8V, T
100
SHDNM = SHDNC = GND
V
V
60
50
90
80
70
40
30
20
10
0
SHDNC
SHDNM
1
CORE
A
V
CORE OUTPUT EFFICIENCY vs. LOAD
INC
= +25°C, unless otherwise noted.)
= +2.7V
= +5.5V
= +28V
= +1.8V, Circuit of Figure 4, T
V
INC
10
= +3.3V
CONDITIONS
LOAD (mA)
Typical Operating Characteristics
V
100
INC
= +5V
1000
A
-40°C to +85°C, unless otherwise noted.)
-0.5
-1.0
-1.5
-2.0
2.0
1.5
1.0
0.5
0
MIN
-40
2.0
-1
V
REF
-15
ACCURACY vs. TEMPERATURE
TEMPERATURE (°C)
10
MAX
0.4
30
1
5
35
UNITS
60
µA
µA
µA
V
V
85