MAX1724 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX1724 Datasheet PDF : 12 Pages
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1.5µA IQ, Step-Up DC-DC Converters
in Thin SOT23-5
ELECTRICAL CHARACTERISTICS (continued)
(VBATT = 1.2V, VOUT = 3.3V (MAX1722/MAX1723), VOUT = VOUT(NOM) (MAX1724), SHDN = OUT, RL = ∞, TA = 0°C to +85°C,
unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
Shutdown Current into BATT
SHDN Voltage Threshold
SHDN Input Bias Current
SYMBOL
VIL
VIH
CONDITIONS
MAX1724 (Note 4)
TA = +25°C
TA = +85°C
MAX1723/MAX1724
MAX1723/MAX1724
MAX1723/MAX1724, TA = +25°C
VSHDN = 5.5V
TA = +85°C
MIN TYP MAX UNITS
0.001 0.5
µA
0.01
75
400
mV
500
800
2
100
nA
7
ELECTRICAL CHARACTERISTICS
(VBATT = 1.2V, VOUT = 3.3V (MAX1722/MAX1723), VOUT = VOUT(NOM) (MAX1724), SHDN = OUT, RL = ∞, TA = -40°C to +85°C,
unless otherwise noted.) (Note 1)
PARAMETER
Output Voltage
Output Voltage Range
Feedback Voltage
N-Channel On-Resistance
P-Channel On-Resistance
N-Channel Switch Current Limit
Switch Maximum On-Time
Synchronous Rectifier Zero-
Crossing Current
Quiescent Current into OUT
SHDN Voltage Threshold
SYMBOL
VOUT
VOUT
VFB
RDS(ON)
RDS(ON)
ILIM
tON
CONDITIONS
MAX1724EZK27
MAX1724EZK30
MAX1724EZK33
MAX1724EZK50
MAX1722/MAX1723
MAX1722/MAX1723
VOUT forced to 3.3V
VOUT forced to 3.3V
VOUT forced to 3.3V
VOUT forced to 3.3V
(Notes 3,4)
VIL
MAX1723/MAX1724
VIH
MAX1723/MAX1724
MIN TYP MAX UNITS
2.633
2.767
2.925
3.218
3.075
V
3.383
4.875
5.125
2
5.5
V
1.200
1.270
V
1.0
Ω
2.0
Ω
400
620
mA
3.5
6.5
µs
5
35
mA
3.6
µA
75
mV
800
Note 1: Limits are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design.
Note 2: Guaranteed with the addition of a Schottky MBR0520L external diode between LX and OUT when using the MAX1723
with only one cell, and assumes a 0.3V voltage drop across the Schottky diode (see Figure 3).
Note 3: Supply current is measured with an ammeter between the output and OUT pin. This current correlates directly with actual
battery supply current, but is reduced in value according to the step-up ratio and efficiency.
Note 4: VOUT forced to the following conditions to inhibit switching: VOUT = 1.05 ✕ VOUT(NOM) (MAX1724), VOUT = 3.465V
(MAX1722/MAX1723).
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