Rainbow Electronics MAX863 User Manual
Page 2
MAX863
Dual, High-Efficiency, PFM, Step-Up
DC-DC Controller
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= +5V, I
LOAD
= 0mA, T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
DD
to GND ............................................................-0.3V to +12V
PGND to GND .......................................................-0.3V to +0.3V
SHDN1, SHDN2, SENSE1, LBO to GND ................-0.3V to +12V
EXT1, EXT2 to PGND..................................-0.3V to (V
DD
+ 0.3V)
FB1, FB2, CS1, CS2, SEL,
LBI, BOOT to GND.................................-0.3V to (V
DD
+ 0.3V)
LBO Continuous Output Current.........................................15mA
EXT1, EXT2 Continuous Output Current .............................50mA
Continuous Power Dissipation (T
A
= +70°C)
QSOP (derate 8.30mW/°C above +70°C) ...................667mW
Operating Temperature Range
MAX863EEE ....................................................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
V
DD
= OUT1 = BOOT (Note 1)
CONDITIONS
1.5
11
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
(Note 2)
V
2.7
11
V
DD
V
DD
Input Voltage
SHDN1 = V
DD
, SHDN2 = GND,
measured from V
DD
µA
35
60
I
DD
Quiescent Current
SHDN1 = SHDN2 = V
DD
, measured from V
DD
50
85
V
IN
= 2.7V to 5V, V
OUT1
= 5V,
I
LOAD
= 300mA, Figure 2
mV/V
8
Line Regulation
V
IN
= 3.3V, V
OUT1
= 5V,
I
LOAD
= 0mA to 500mA, Figure 2
mV/A
40
Load Regulation
nA
2
10
I
FB
, I
LBI
FB1, FB2, LBI Input Current
V
DD
= 1.5V
V
0.7 x V
DD
V
IH
2.7V < V
DD
< 11V
1.6
SHDN1, SHDN2, SEL, BOOT
Input High Voltage
mV
85
100
115
V
CS
CS1, CS2 Threshold Voltage
µs
14
17.5
22
Logic input = V
DD
or GND
t
ON
Maximum Switch On-Time
µA
1
25
CS1, CS2 Input Current
µA
1
I
I
SHDN1, SHDN2, SEL, BOOT
Input Current
V
1.225
1.25
1.275
V
FB
, V
LBI
FB1, FB2, LBI
Threshold Voltage (Note 4)
C
LOAD
= 1nF, 10% to 90%
ns
50
EXT Rise/Fall Time (Note 5)
µs
1.6
2
2.4
t
OFF
Minimum Switch Off-Time
FB1 = GND
V
4.85
5
5.15
V
OUT1
OUT1 Output Voltage
(Note 3)
FB1 = V
DD
3.2
3.3
3.4
V
DD
= 1.5V
V
0.2 x V
DD
V
IL
2.7V < V
DD
< 11V
0.4
SHDN1, SHDN2, SEL, BOOT
Input Low Voltage
SHDN1 = SHDN2 = GND
µA
1
I
DD, SHDN
Shutdown Current
Ω
5
EXT On-Resistance
V
LBO
= 11V, V
LBI
> 1.275V
µA
1
I
LBO
LBO Leakage Current
I
LBO
,
SINK
= 1mA, V
LBI
< 1.225V
V
0.1
0.4
V
LBO,L
LBO Low Level