Datasheet

MAX1722/MAX1723/MAX1724
1.5µA I
Q
, Step-Up DC-DC Converters in TSOT
2
Maxim Integrated
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
BATT
= 1.2V, V
OUT
= 3.3V (MAX1722/MAX1723), V
OUT
= V
OUT(NOM)
(MAX1724), SHDN = OUT, R
L
= ∞, T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
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.
OUT, SHDN, BATT, LX to GND ................................-0.3V to +6V
FB to GND ................................................-0.3V to (V
OUT
+ 0.3V)
OUT, LX Current.......................................................................1A
Continuous Power Dissipation (T
A
= +70°C)
5-Pin Thin SOT (derate 2.7mW/°C above +70°C)..219.10mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Soldering Temperature
Lead(Pb)-free packages...............................................+260°C
Packages containing lead(Pb)......................................+240°C
T
A
= +85°C
T
A
= +25°C
T
A
= 0°C to +85°C
T
A
= +25°C
T
A
= 0°C to +85°C
T
A
= +25°C
T
A
= 0°C to +85°C
T
A
= +25°C
T
A
= 0°C to +85°C
T
A
= +25°C
T
A
= 0°C to +85°C
T
A
= +25°C
MAX1723 (Note 2)
MAX1722/MAX1724
Shutdown Current into OUT
0.1
µA
Quiescent Current into OUT
1.5 3.6
µA
Quiescent Current into BATT
0.01
µA
MAX1723/MAX1724
(Notes 3, 4)
(Notes 3, 4)
MAX1722/MAX1724
(Note 4)
PARAMETER SYMBOL MIN TYP MAX UNITS
2.633 2.767
Output Voltage V
OUT
2.673 2.7 2.727
V
0.87 1.2
Minimum Startup Input Voltage
0.83 0.91
V
2.970 3.0 3.030
2.925 3.075
3.267 3.3 3.333
3.218 3.383
Operating Input Voltage
Minimum Input Voltage
0.8
V
V
IN
0.91 5.5
V
1.2 5.5
4.950 5.0 5.050
4.875 5.125
Output Voltage Range V
OUT
2 5.5
V
Feedback Voltage V
FB
1.223 1.235 1.247
V
1.210 1.260
Feedback Bias Current I
FB
1.5 20
nA
2.2
N-Channel On-Resistance R
DS(ON)
0.5 1.0
Ω
P-Channel On-Resistance R
DS(ON)
1.0 2.0
Ω
N-Channel Switch Current Limit I
LIM
400 500 600
mA
Switch Maximum On-Time t
ON
3.5 5 6.5
µs
Synchronous Rectifier Zero-
Crossing Current
52035
mA
CONDITIONS
MAX1724EZK50
MAX1724EZK27
T
A
= +25°C,
R
L
= 3kΩ
MAX1724EZK30
MAX1722/MAX1723
MAX1722/MAX1723
MAX1724EZK33
MAX1722/MAX1723
MAX1722/MAX1724
V
OUT
forced to 3.3V
T
A
= +25°C
V
OUT
forced to 3.3V
V
OUT
forced to 3.3V
V
OUT
forced to 3.3V
MAX1722/MAX1724
MAX1723 (Note 2)
T
A
= +85°C
T
A
= +25°C
0.01 0.5
T
A
= +85°C
T
A
= +25°C
0.001 0.5