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參數(shù)資料
| 型號(hào)： | MAX1742-MAX1842 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 數(shù)字信號(hào)處理 |
| 英文描述： | Replaced by TMS320C6410 : Digital Signal Processor 40-PDIP 0 to 0 |
| 中文描述： | 1A/2.7A的1MHz，降壓型同步整流和內(nèi)部開關(guān)穩(wěn)壓器 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 597K |
| 代理商： | MAX1742-MAX1842 |
M
1A/2.7A, 1MHz, Step-Down Regulators with
Synchronous Rectification and Internal Switches
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
V
CC
, IN to GND ........................................................-0.3V to +6V
IN to V
CC
.............................................................................±0.3V
GND to PGND.....................................................................±0.3V
All Other Pins to GND.................................-0.3V to (V
CC
+ 0.3V)
LX Current (Note 1).............................................................±4.7A
REF Short Circuit to GND Duration ............................Continuous
ESD Protection.....................................................................±2kV
Note 1:
LX has internal clamp diodes to PGND and IN. Applications that forward-bias these diodes should take care not to exceed
the IC
’
s package power dissipation limits.
ELECTRICAL CHARACTERISTICS
(V
IN
= V
CC
= 3.3V, FBSEL = GND,
T
A
= 0°C to +85°C
, unless otherwise noted. Typical values are at T
A
= +25°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.
PARAMETER
SYMBOL
V
IN
, V
CC
CONDITIONS
MIN
3.0
TYP
MAX
5.5
UNITS
V
Input Voltage
T
A
= +25
°
C
to +85
°
C
2.500
2.525
2.550
FBSEL =
V
CC
T
A
= +0
°
C
to +85
°
C
2.487
2.525
2.563
T
A
= +25
°
C
to +85
°
C
1.500
1.515
1.530
FBSEL =
unconnected
T
A
= +0
°
C
to +85
°
C
1.492
1.515
1.538
T
A
= +25
°
C
to +85
°
C
1.800
1.818
1.836
FBSEL =
REF
T
A
= +0
°
C
to +85
°
C
1.791
1.818
1.845
T
A
= +25
°
C
to +85
°
C
1.089
1.100
1.111
Preset Output Voltage
V
OUT
V
IN
= 3V to
5.5V,
I
LOAD
= 0
to 1A for
MAX1742,
I
LOAD
= 0
to 2.5A for
MAX1842,
V
FB
= V
OUT
FBSEL =
GND
T
A
= +0
°
C
to +85
°
C
1.084
1.100
1.117
V
Adjustable Output Voltage
Range
V
IN
= V
CC
= 3V to 5.5V, I
LOAD
= 0,
FBSEL = GND
V
REF
V
IN
V
AC Load Regulation Error
DC Load Regulation Error
Dropout Voltage
2
%
%
mV
V
IN
= V
CC
= 3V, I
LOAD
= 1A
T
A
= +25
°
C to +85
°
C
T
A
= +0
°
C to +85
°
C
I
REF
= -1μA to +10μA
0.4
1.100
1.100
0.5
90
110
70
80
V
DO
250
1.111
1.117
2
200
250
150
200
1.089
1.084
Reference Voltage
V
REF
V
Reference Load Regulation
PMOS Switch
On-Resistance
NMOS Switch
On-Resistance
V
REF
mV
V
IN
= 4.5V
V
IN
= 3V
V
IN
= 4.5V
V
IN
= 3V
R
ON, P
I
LX
= 0.5A
R
ON, N
I
LX
= 0.5A
m
Continuous Power Dissipation (T
A
= +70
°
C)
SSOP (derate 16.7mW/
°
C above +70
°
C;
part mounted on 1 in.
2
of 1oz. copper)...............................1W
Operating Temperature Range ...........................-40
°
C to +85
°
C
Storage Temperature Range.............................-65
°
C to +150
°
C
Lead Temperature (soldering, 10s)................................ +300
°
C
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