MAX1572 Maxim Integrated Products, MAX1572 Datasheet - Page 3

• Manufacturer Part Number: MAX1572
• Description: PWM DC-to-DC Step-Down Converter
• Manufacturer: Maxim Integrated Products

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