MAX863 Maxim, MAX863 Datasheet - Page 3

• Manufacturer Part Number: MAX863
• Description: Dual / High-Efficiency / PFM / Step-Up DC-DC Controller
• Manufacturer: Maxim

100
ELECTRICAL CHARACTERISTICS
(V
(T
Note 1: When bootstrapped, an internal low-voltage oscillator drives the EXT1 pin rail-to-rail for low supply voltages.
Note 2: For non-bootstrapped operation, V
Note 3: For adjustable output voltages, see the Set the Output Voltage section.
Note 4: Measured with LBI falling. Typical hysteresis is 15mV.
Note 5: EXT1 and EXT2 swing from V
Note 6: Specifications to -40°C are guaranteed by design and not production tested.
__________________________________________Typical Operating Characteristics
90
80
70
60
50
40
30
20
10
V
OUT1 Output Voltage
(Note 3)
Quiescent Current
Shutdown Current
FB1, FB2 Threshold Voltage
CS1, CS2 Threshold Voltage
0
DD
A
DD
0.01
= +25°C, unless otherwise noted.)
= +5V, I
Input Voltage
EFFICIENCY vs. OUTPUT CURRENT
(V
PARAMETER
OUT1
0.1
OUTPUT CURRENT (mA)
LOAD
= 3.3V, BOOTSTRAPPED)
1
= 0mA, T
_______________________________________________________________________________________
10
A
V
A: V
B: V
C: V
OUT1
B
100
A
IN
IN
IN
= 0°C to +85°C, unless otherwise noted.) (Note 6)
= 1.5V
= 2.4V
= 2.7V
= 3.3V
SYMBOL
I
DD, SHDN
C
1000
Dual, High-Efficiency, PFM, Step-Up
V
V
V
OUT1
V
I
DD
DD
CS
FB
DD
to GND.
DD
SHDN1 = SHDN2 = GND
V
(Note 2)
FB1 = V
FB1 = GND
SHDN1 = SHDN2 = V
SHDN1 = V
measured from V
100
> 2.7V is required to allow valid operation of all internal circuitry.
DD
90
80
70
60
50
40
30
20
10
0
0.01
= OUT1 (Note 1)
EFFICIENCY vs. OUTPUT CURRENT
DD
(V
OUT1
0.1
DD
OUTPUT CURRENT (mA)
, SHDN2 = GND,
= 5.0V, BOOTSTRAPPED)
CONDITIONS
A
DD
1
B
DD
C
10
, measured from V
D
F
V
A: V
B: V
C: V
D: V
E: V
F: V
E
OUT1
100
IN
IN
IN
IN
IN
IN
= 3.6V
= 4.0V
= 1.5V
= 2.4V
= 5.0V
= 2.7V
= 3.3V
1000
DC-DC Controller
DD
100
90
80
70
60
50
40
30
20
10
0
0.01
3.15
1.21
MIN
1.6
2.8
4.8
85
(V
EFFICIENCY vs. OUTPUT CURRENT
OUT1
0.1
= 5.0V, NON-BOOTSTRAPPED)
OUTPUT CURRENT (mA)
TYP
1
A
B
10
1.285
MAX
3.45
115
5.2
11
11
85
60
1
C
V
A: V
B: V
C: V
D: V
D
OUT1
100
IN
IN
IN
IN
= 2.7V
= 3.3V
= 5.0V
= 3.6V
= 4.0V
UNITS
mV
µA
µA
1000
V
V
V
3