MAX14720 Datasheet, PDF (3/38 Pages) Maxim Integrated Products – Extended System Battery Use Time

MAX14720/MAX14750
Power-Management Solution
Electrical Characteristics (continued)
(V_CC = V_BIN = V_LIN = V_HVIN = V_SWIN = 2.7V, T_A = -40°C to +85°C, all registers in their default state, unless otherwise noted. Typical
values are at T_A = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
On Input Current
Power Sequence
Boot Time
Reset Time
Power Switch
Input Voltage Range
Quiescent Supply
Current
LDO, buck, and buck-boost
I_ON
enabled; BIN UVLO and LIN UVLO
enabled; I_SWOUT = I_LOUT = I_BOUT
= I_HVOUT = 0A
4.4
8.3
µA
t_BOOT
t_RST
MAX14720
MAX14750
MAX14720
9.9
11
12.1
ms
21.6
24
26.4
ms
72
80
88
ms
V_SWIN
I_{Q_SW}
V_SWIN ≤ V_CC
I_SWOUT = 0A
1.8
5.5
V
0.05
0.09
µA
Switch On-Resistance
R_{ON_SW}
I_SWOUT = 200mA
V_SWIN = 1.8V, I_SWOUT = 200mA
0.16
0.25
Ω
0.27
0.5
Maximum Output
Current
I_{SWOUT_MAX}
200
mA
I_SWOUT = 0mA, C_SWOUT = 100µF,
time from 10% to 90% of V_SWIN,
0.65
ms
SWSoftStart = 0
Turn-On Time
t_{ON_SW}
I_SWOUT = 0mA, C_SWOUT = 100µF,
time from 10% to 90% of V_SWIN,
13.8
ms
SWSoftStart = 1
Short-Circuit Current
Limit
I_{SHRT_SW}
V_SWOUT = GND, SWSoftStart = 0
200
460
700
mA
Soft-Start Current Limit
I_{SSTR_SW}
V_SWOUT = GND, SWSoftStart = 1
9
25
54
mA
Thermal-Shutdown
Threshold
T_{SHDN_SW}
T_J rising
150
°C
Thermal-Shutdown
Hysteresis
T_{SHDN_HYST_SW}
20
°C
Buck Boost Converter (C_OUT = 10µf, L = 4.7µF, unless otherwise noted.)
Input Voltage Range
V_HVIN
1.8
5.5
V
Quiescent Supply
Current
I_{Q_BOOST}
V_HVOUT = 4V, I_HVOUT = 0A,
BIN UVLO disabled
V_HVOUT = 4V, I_HVOUT = 0A,
BIN UVLO enabled
1.1
2.6
µA
1.3
3
µA
Minimum Input Voltage
Startup
V_{HVIN_STUP}
I_LOAD = 1mA, minimum input
voltage for correct startup of the
buck-boost
1.9
V
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