參數(shù)資料
型號(hào)： MAX15020
廠商： Maxim Integrated Products, Inc.
元件分類： DC/DC變換器
英文描述： 2A, 40V Step-Down DC-DC Converter with Dynamic Output-Voltage Programming
中文描述： 2A、40V降壓型DC-DC轉(zhuǎn)換器，可動(dòng)態(tài)設(shè)置輸出電壓
文件頁(yè)數(shù)： 3/19頁(yè)
文件大?。?/td> 363K
代理商： MAX15020
M
2A, 40V Step-Down DC-DC Converter with
Dynamic Output-Voltage Programming
_______________________________________________________________________________________
3
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.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SOFT-START/REFIN/REFOUT/FB
Soft-Start Current
REFOUT Output Voltage
REFIN Input Range
I
SS
8
15
0.98
26
1.01
3.6
1.01
μA
V
V
V
0.97
0
0.97
REFIN = REFOUT
0.98
FB Accuracy
FB = COMP, V
REFIN
= 0.2V to 3.6V
V
REFIN
- 5mV
V
REFIN
V
REFIN
+ 5mV
mV
FB Input Current
Open-Loop Gain
Unity-Gain Bandwidth
V
SS
= 0.2V, V
FB
= 0V
-250
+250
nA
dB
MHz
80
1.8
9.4
8.9
f
SYNC
= 100kHz, V
IN
= 7.5V
f
SYNC
= 500kHz, V
IN
= 40V
PWM Modulator Gain (V
IN
/
V
RAMP
)
CURRENT-LIMIT COMPARATOR
Cycle-by-Cycle Switch Current
Limit
Number of ILIM Events to Hiccup
V/V
I
ILIM
2.5
3.5
4.5
A
4
—
Hiccup Timeout
512
Clock
periods
POWER SWITCH
Switch On-Resistance
BST Leakage Current
Switch Leakage Current
Switch Gate Charge
THERMAL SHUTDOWN
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
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
0.18
0.35
10
10
μA
μA
nC
10
T
SHDN
+160
20
°C
°C
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)
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