MAX14720 Datasheet, PDF (7/38 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
Switch Mode
Resistance
Turn-On Time
Short-Circuit Current
Limit
Thermal-Shutdown
Threshold
SYMBOL
R_{ON_LDO}
t_{ON_LDO}
I_{SHRT_LDO}
t_{SHDN_LDO}
CONDITIONS
V_LIN = 1.8V, I_LOUT = 50mA
V_LIN = 1.2V, I_LOUT = 5mA
I_LOUT = 0mA , time from 10% to
90% of final regulation value
I_LOUT = 0mA , time from 10% to
90% of V_LIN, Switch mode
V_LOUT = GND
V_LOUT = GND, Switch mode
T_J rising
MIN
TYP
MAX
UNITS
1
Ω
3
0.95
ms
1.8
ms
380
mA
370
mA
150
°C
Thermal-Shutdown
Hysteresis
t_{SHDN_HYST_LDO}
21
°C
Output Noise
OUT_{NOISE_LDO}
Battery Impedance Measurement
SWOUT Allowed
Supply Range
V_SWOUT
10Hz to 100kHz, V_LIN = 5V,
V_LOUT = 3.3V
10Hz to 100kHz, V_LIN = 5V,
V_LOUT = 2.5V
10Hz to 100kHz, V_LIN = 5V,
V_LOUT = 1.2V
10Hz to 100kHz, V_LIN = 5V,
V_LOUT = 0.9V
150
125
µV_RMS
90
80
2
5.5
V
SWOUT UVLO
SWOUT UVLO
Hysteresis
U_VLOSWOUT
U_VLOHYST
Falling edge
Hysteresis
1.92
2
V
30
mV
V_CC Impedance Test
Current Range
I_{BIM_CUR}
Programmable current source with
step change of 2x
250
8000
µA
V_CC Impedance Test
Current Accuracy
I_{BIM_ACC}
V_CC > 1.2V
-10
10
%
V_CC Input Divider
Resistance
R_VCC
V_CC measure enabled
1.5
MΩ
Measurable V_CC
Voltage Range
V_{CC_FS}
Allowed V_CC voltages range for
SAR ADC operation
1.2
3.6
V
V_CC Voltage Resolution
LSB
V_{CC_LSB}
10.2
mV
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