Maximum Junction Temperature .....................................+150°C
Storage Temperature Range ............................-60°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
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
IN
= 36V, V
REG
= V
DVREG
, V
PGND
= V
GND
= V
EP
= 0V, V
SYNC
= 0V, C
REFOUT
= 0.1μF, T
A
= T
J
= -40°C to +125°C, FSEL = REG,
unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Input Voltage Range
UVLO Rising Threshold
UVLO Falling Threshold
UVLO Hysteresis
Quiescent Supply Current
Switching Supply Current
Shutdown Current
ON/OFF CONTROL
Input-Voltage Threshold
Input-Voltage Threshold
Hysteresis
Input Bias Current
Shutdown Threshold Voltage
Output Voltage
OSCILLATOR
Frequency
Maximum Duty Cycle
SYNC/FSEL High-Level
Voltage
SYNC/FSEL Low-Level
Voltage
SYNC Frequency Range
f
SYNC
V
FSEL
= V
REG
100
f
SW
D
MAX
V
FSEL
= 0V
V
FSEL
= V
REG
V
FSEL
= 0V
V
FSEL
= V
REG
450
270
85
90
2
0.8
550
550
330
kHz
%
V
V
kHz
V
SD
I
REG
= 0 to 20mA
7.1
INTERNAL VOLTAGE REGULATOR (REG)
8.3
V
V
ON/OFF
= 0V to V
IN
-250
V
ON/OFF
V
ON/OFF
rising
1.200
1.225
120
+250
0.2
1.270
V
mV
nA
V
I
SHDN
SYMBOL
V
IN
UVLO
RISING
UVLO
FALLING
UVLO
HYST
V
IN
= 40V, V
FB
= 1.3V
V
IN
= 40V, V
FB
= 0V
V
ON/OFF
= 0.2V, V
IN
= 40V
CONDITIONS
MIN
7.5
6.80
6.0
7.20
6.5
0.7
1.6
14.5
6
15
2.8
TYP
MAX
40.0
7.45
7.0
UNITS
V
V
V
V
mA
mA
µA
www.maximintegrated.com
Maxim Integrated
│
2
MAX15020
2A, 40V Step-Down DC-DC Converter with
Dynamic Output-Voltage Programming
Electrical Characteristics (continued)
(V
IN
= 36V, V
REG
= V
DVREG
, V
PGND
= V
GND
= V
EP
= 0V, V
SYNC
= 0V, C
REFOUT
= 0.1μF, T
A
= T
J
= -40°C to +125°C, FSEL = REG,
unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SOFT-START/REFIN/REFOUT/FB
Soft-Start Current
REFOUT Output Voltage
REFIN Input Range
REFIN = REFOUT
FB Accuracy
FB Input Current
Open-Loop Gain
Unity-Gain Bandwidth
PWM Modulator Gain
(V
IN
/V
RAMP
)
CURRENT-LIMIT COMPARATOR
Cycle-by-Cycle Switch
Current Limit
Number of ILIM Events to
Hiccup
Hiccup Timeout
POWER SWITCH
Switch On-Resistance
BST Leakage Current
Switch Leakage Current
Switch Gate Charge
THERMAL SHUTDOWN
Thermal Shutdown
Temperature
Thermal Shutdown
Hysteresis
T
SHDN
+160
20
°C
°C
V
BST
- V
LX
= 6V
V
BST
= V
LX
= V
IN
= 40V
V
IN
= 40V, V
LX
= V
BST
= 0V
V
BST
- V
LX
= 6V
10
0.18
0.35
10
10
Ω
µA
µA
nC
I
ILIM
2.5
3.5
4
512
4.5
A
—
Clock
periods
f
SYNC
= 100kHz, V
IN
= 7.5V
f
SYNC
= 500kHz, V
IN
= 40V
F
B
= COMP, V
REFIN
= 0.2V to 3.6V
V
SS
= 0.2V, V
FB
= 0V
I
SS
8
0.97
0
0.97
V
REFIN
- 5mV
-250
80
1.8
9.4
8.9
0.98
V
REFIN
15
0.98
26
1.01
3.6
1.01
V
REFIN
+ 5mV
+250
µA
V
V
V
mV
nA
dB
MHz
V/V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Note 1:
Limits are 100% production tested at T
A
= T
J
= +25°C. Limits at -40°C and +125°C are guaranteed by design.
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