MAX1572ETC250-T Maxim Integrated Products, MAX1572ETC250-T Datasheet - Page 2

• Manufacturer Part Number: MAX1572ETC250-T
• Description: DC/DC Switching Converters 800mA 2MHz PWM Step-Down w/Reset
• Manufacturer: Maxim Integrated Products

ABSOLUTE MAXIMUM RATINGS
ABATT, BATT, EN1, EN2, RESET, OUT,
PGND to GND .......................................................-0.3V to +0.3V
LX Current (Note 1) .............................................................±2.1A
Output Short-Circuit Duration ............................................Infinite
Continuous Power Dissipation (T
800mA, 2MHz, PWM DC-to-DC
Step-Down Converter with RESET
Note 1: LX has internal clamp diodes to PGND and BATT. Applications that forward bias these diodes should take care not to
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
2
BATT Input Voltage
Undervoltage Lockout Threshold
Quiescent Supply Current
Shutdown Supply Current
Maximum Output Current
OUT Bias Current
Output-Voltage Accuracy
(Voltage Positioning)
Line Regulation
P-Channel On-Resistance
N-Channel On-Resistance
P-Channel Current-Limit Threshold
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
12-Pin Thin QFN (derate 16.9mW/°C above +70°C)...1349mW
BATT
SS to GND ............................................................-0.3V to +6V
_______________________________________________________________________________________
= 3.6V, T
exceed the IC’s package power dissipation limits.
PARAMETER
A
= +0°C to +85°C, unless otherwise noted. Typical values are at T
A
= +70°C)
V
EN1 = GND, EN2 = BATT, no switching
EN1 = BATT, EN2 = GND, no switching
EN1 = EN2 = GND, T
No load, EN1 = EN2 = BATT
100mA load
300mA load
550mA load
800mA load
I
I
EN1 = EN2 = BATT
EN1 = BATT, EN2 = GND
(Note 2)
EN1 = EN2 = GND
EN1 = BATT, EN2 = GND or
EN1 = GND, EN2 = BATT
EN1 = EN2 = BATT
LX
LX
BATT
= 180mA
= 180mA
rising and falling, 1% hysteresis
CONDITIONS
V
V
V
V
BATT
BATT
BATT
BATT
A
= 3.6V
= 2.6V
= 3.6V
= 2.6V
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
= +25°C
A
= +25°C.)
-0.68
2.20
1.00
MIN
800
-0.4
100
2.6
1.8
15
65
-0.52
+0.8
TYP
2.35
0.28
0.33
0.18
0.20
1.25
16.7
700
100
0.1
1.2
0.3
0.1
48
40
-1
-2
6
0
0
2
MAX
-0.37
+2.0
2.55
0.45
0.30
1.65
17.3
150
5.5
2.7
1.4
2.2
80
65
10
1
9
UNITS
A
MHz
%/V
mA
mA
µA
µA
µA
RMS
µA
kΩ
%
%
%
Ω
Ω
V
V
A
A