MAX1775 Maxim, MAX1775 Datasheet - Page 4

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

ELECTRICAL CHARACTERISTICS (continued)
(V
Typical values are at T
Dual-Output Step-Down
DC-DC Converter for PDA/Palmtop Computers
ELECTRICAL CHARACTERISTICS
(V
(Note 2)
4
Input Voltage
Input Quiescent Supply Current
CS- Quiescent Supply Current
Core Regulator Quiescent
Supply Current
IN Shutdown Supply Current
MAIN REGULATOR
Main Output Voltage Adjust
Range
FBM Regulation Threshold
FBM Input Current
Current-Limit Threshold
M i ni m um C ur r ent- Li m i t Thr eshol d
Valley Current Threshold
Zero Current Threshold
PDRV, NDRV Gate Drive
Resistance
CS- to CVL Switch Resistance
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
IN
_______________________________________________________________________________________
= +12V, V
= +12V, V
PARAMETER
PARAMETER
MAIN
MAIN
= V
= V
A
INC
INC
= +25°C.)
= V
= V
CS-
CS-
= V
= V
SYMBOL
SYMBOL
CS+
CS+
V
I
I
I
V
V
FBM
INC
I
CS-
FBM
IN
CL
IN
= +3.3V, V
= +3.3V, V
V
V
V
V
V
V
SHDNM = SHDNC = GND
V
V
V
V
V
V
V
I
SHDNM = SHDNC = GND
V
V
V
CVL
FBM
FBM
FBM
( C S + - C S - )
FBM
CS+
CS+
CS+
CS+
CS-
SHDNM
SHDNM
SHDNM
SHDNC
SHDNM
SHDNM
CORE
CORE
= 50mA
= +3.3V
- V
- V
- V
- V
= +1.5V, V
= +1.5V, V
= +1.5V, V
= +1.3V
CS-
CS-
CS-
CS-
= V
= V
= V
= +5.5V
= +5V
= +28V
= +1.8V, Circuit of Figure 4, T
= +1.8V, Circuit of Figure 4, T
= 0 to + 60m V , V
SHDNC
SHDNC
SHDNC
CONDITIONS
CONDITIONS
FBC
FBC
FBC
= +3.3V
= +3.3V
= +3.3V
= +1.5V,
= +1.5V,
= +1.5V,
I N
= + 2.7V to + 28V
A
A
-40°C to +85°C, unless otherwise noted.)
= 0°C to +85°C, unless otherwise noted.
1.25
1.21
MIN
-0.1
MIN
2.7
2.0
60
40
-1
6
0
TYP
15
2
MAX
MAX
1.29
220
120
100
5.5
0.1
4.4
0.4
28
30
30
24
60
15
30
8
1
5
UNITS
UNITS
mV
mV
mV
mV
µA
µA
µA
µA
µA
µA
µA
µA
Ω
Ω
V
V
V
V
V