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参数资料
| 型号： | MAX1843EGI |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 2.7A, 1MHz, Low-Voltage, Step-Down Regulator with Internal Synchronous Rectification in QFN Package |
| 中文描述： | 4.3 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, CQCC28 |
| 封装： | 5 X 5 MM, 0.90 MM HEIGHT, QFN-28 |
| 文件页数： | 3/13页 |
| 文件大小： | 366K |
| 代理商： | MAX1843EGI |
M
2.7A, 1MHz, Low-Voltage, Step-Down Regulator with
Internal Synchronous Rectification in QFN Package
_______________________________________________________________________________________
3
PARAMETER
SYMBOL
CONDITIONS
MIN
0.3
TYP
0.6
MAX
0.9
1
600
15
UNITS
A
MHz
μA
μA
°
C
V
nA
Idle-Mode Current Threshold
Switching Frequency
No-Load Supply Current
Shutdown Supply Current
f
(Note 2)
V
FB
= 1.2V
SHDN
= GND, includes PMOS leakage
Hysteresis = 15
°
C
V
IN
falling, hysteresis = 90mV
V
FB
= 1.2V
R
TOFF
= 110k
R
TOFF
= 30.1k
R
TOFF
= 499k
FB = GND
(Note 2)
I
IN
+ I
CC
I
IN
+ I
CC
T
SHDN
V
UVLO
350
<1
160
2.6
60
1.00
0.30
4.5
4 t
OFF
Thermal Shutdown Threshold
Undervoltage Lockout
2.5
0
0.9
0.24
3.8
2.7
250
1.1
0.37
5.2
FB Input Bias Current
Off-Time
t
OFF
μs
Off-Time Startup Period
On-Time
SS Source Current
SS Sink Current
SHDN
Input Current
SHD N
Log c Inp ut Low V ol ag e
SHD N
Log c Inp ut H g h V ol ag e
μs
μs
μA
μA
μA
V
V
μA
t
ON
I
SS
I
SS
I
SHDN
V
IL
V
IH
I
FB
0.4
4
100
-1
5
6
V
SS
= 1V
V
SHDN
= 0 to V
CC
1
0.8
2.0
-4
FBSEL Input Current
V
FBSEL
= 0 to V
CC
FBSEL = GND
FBSEL = REF
4
0.2
1.3
0.9
FBSEL = unconnected
0.7V
CC
- 0.2
0.7V
CC
+ 0.2
FBSEL Logic Thresholds
FBSEL = V
CC
V
CC
- 0.2
V
M axi m um O utp ut RM S C ur ent
3.1
A
RMS
ELECTRICAL CHARACTERISTICS
(V
IN
= V
CC
= +3.3V, FBSEL = GND,
T
A
= -40
°
C to +85
°
C
, unless otherwise noted. Typical values are at T
A
= +25
°
C.) (Note 3)
PARAMETER
SYMBOL
V
IN
, V
CC
CONDITIONS
MIN
3.0
2.475
1.485
1.782
1.078
MAX
5.5
2.756
1.545
1.854
1.122
UNITS
V
Input Voltage
FBS E L = V
C C
FBS E L = unconnected
FBS E L = RE F
FBS E L = GN D
Preset Output Voltage
V
OUT
V
IN
= +3V to + 5.5V,
I
LOAD
= 0 to 2.5A,
V
FB
= V
OU T
V
Adjustable Output Voltage
Range
V
IN
= V
CC
= +3V to +5.5V, FBS E L = GN D
V
REF
V
IN
V
Reference Voltage
V
REF
1.078
1.122
200
250
V
V
IN
= +4.5V
V
IN
= +3V
PMOS Switch On-Resistance
R
ON,P
I
LX
= 0.5A
m
ELECTRICAL CHARACTERISTICS (continued)
(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.)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1843EGI+ | 制造商:Maxim Integrated Products 功能描述:2.7A, 1MHZ, INTERNAL SWITCH STEP DOWN REGULATOR - Rail/Tube |
| MAX1843EGI+T | 制造商:Maxim Integrated Products 功能描述:CONV DC-DC SGL-OUT STEP DOWN 28QFN EP - Tape and Reel |
| MAX1843EGI-T | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1843ETI+ | 功能描述:直流/直流开关调节器 2.7A 1MHz Step-Down RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1843ETI+T | 功能描述:直流/直流开关调节器 2.7A 1MHz Step-Down RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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