MAX1572 Maxim Integrated Products, MAX1572 Datasheet - Page 3
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MAX1572
Manufacturer Part Number
MAX1572
Description
PWM DC-to-DC Step-Down Converter
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX1572.pdf
(11 pages)
ELECTRICAL CHARACTERISTICS (continued)
(V
ELECTRICAL CHARACTERISTICS
(V
BATT Input Voltage
Undervoltage Lockout Threshold
Quiescent Supply Current
Shutdown Supply Current
Maximum Output Current
OUT Bias Current
Output-Voltage Accuracy
(Voltage Positioning)
P-Channel On-Resistance
N-Channel On-Resistance
N-Channel Current-Limit Threshold
N-Channel Zero-Crossing Threshold
LX Output Current
LX Leakage Current
Maximum Duty Cycle
Minimum Duty Cycle
Switching Frequency
SS Output Impedance
SS Discharge Resistance
EN_ Logic Input High
SS Discharge Resistance
EN_ Logic Input High
EN_ Logic Input Low
EN_ Logic Input Current
RESET Threshold
RESET Timer Delay Time
RESET Output Low Level
RESET Internal Pullup Resistance to OUT
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
BATT
BATT
= 3.6V, T
= 3.6V, T
PARAMETER
PARAMETER
A
A
= +0°C to +85°C, unless otherwise noted. Typical values are at T
= -40°C to +85°C, unless otherwise noted.) (Note 3)
_______________________________________________________________________________________
Step-Down Converter with RESET
EN1 = EN2 = GND
V
V
Percent of nominal, measured at OUT
From V
I
T
V
EN1 = GND, EN2 = BATT, no switching
EN1 = EN2 = GND
No load, EN1 = EN2 = BATT
100mA load
I
I
EN1 = EN2 = BATT
EN1 = BATT, EN2 = GND
(Note 2)
EN1 = EN2 = GND
EN1 = EN2 = BATT
EN1 = EN2 = GND
V
V
SINK
LX
LX
J
ABATT
ABATT
BATT
ABATT
ABATT
rising
= 180mA
= 180mA
800mA, 2MHz, PWM DC-to-DC
= 1mA
OUT
rising and falling, 1% hysteresis
> 4.2V
≤ 4.2V
> 4.2V
≤ 4.2V
> 90% to RESET = HI
CONDITIONS
CONDITIONS
A
= +25°C.)
MIN
-0.68
170
MIN
2.20
1.6
1.4
-1.2
800
100
87
2.6
1.8
1.6
1.4
10
65
9
0.015
TYP
100
200
160
0.1
TYP
90
14
20
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0.075
MAX
MAX
-0.22
200
230
2.55
+2.8
0.45
17.3
0.4
150
200
93
20
5.5
3.2
0.3
1.4
2.2
80
65
10
1
3
9
UNITS
UNITS
A
MHz
ms
mA
mA
µA
kΩ
°C
°C
µA
µA
µA
µA
kΩ
%
RMS
Ω
V
V
V
%
%
%
V
V
Ω
Ω
A
Ω
V
3